Page last updated: 2024-12-10

pregabalin

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Description

Pregabalin: A gamma-aminobutyric acid (GABA) derivative that functions as a CALCIUM CHANNEL BLOCKER and is used as an ANTICONVULSANT as well as an ANTI-ANXIETY AGENT. It is also used as an ANALGESIC in the treatment of NEUROPATHIC PAIN and FIBROMYALGIA. [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

pregabalin : A gamma-amino acid that is gamma-aminobutyric acid (GABA) carrying an isobutyl substitutent at the beta-position (the S-enantiomer). Binds with high affinity to the alpha2-delta site (an auxiliary subunit of voltage-gated calcium channels) in central nervous system tissues. [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Cross-References

ID SourceID
PubMed CID5486971
CHEMBL ID1059
CHEBI ID64356
SCHEMBL ID8227
MeSH IDM0214473

Synonyms (104)

Synonym
AC-1158
pregabalin sandoz
pregabalin zentiva
ynp-1807
vronogabic
pregabalin sandoz gmbh
CHEMBL1059 ,
pregabalin mylan
chebi:64356 ,
nsc-759256
lyrica
pd-144723
ci-1008
pregabalin
148553-50-8
pregabalin (jan/usan/inn)
lyrica (tn)
D02716
(r-)-3-isobutyl gaba
ci 1008
(s)-3-(aminomethyl)-5-methylhexanoic acid
pregabalin [usan]
pd 144723
hexanoic acid, 3-(aminomethyl)-5-methyl-, (3s)-
(s+)-3-isobutyl gaba
(s)-3-isobutyl gaba
DB00230
3-isobutyl gaba
pregablin
121GE001
bdbm50164279
(s)-3-aminomethyl-5-methyl-hexanoic acid
AKOS005145504
(3s)-3-(aminomethyl)-5-methylhexanoic acid
A808784
cas-148553-50-8
tox21_111475
dtxcid9025950
dtxsid1045950 ,
HY-17414
CS-1247
pregabalin [usan:inn:ban:jan]
nsc 759256
55jg375s6m ,
hsdb 7530
unii-55jg375s6m
dea no. 2782
NCGC00346738-01
AM20080369
pregabalin [ema epar]
pregabalin [ep monograph]
pregabalin [usp monograph]
pregabalin [jan]
pregabalin [inn]
pregabalin [vandf]
pregabalin [orange book]
pregabalin [mart.]
pregabalin [hsdb]
lyrica cr
pregabalin [usp-rs]
pregabalin mylan pharma
pregabalin [who-dd]
pregabalin [mi]
gtpl5484
(s)-pregabalin
nervalin
CCG-221247
AKOS001476611
(s)-3-aminomethyl-5-methylhexanoic acid
(s)-3-(aminomethyl)-5-methylhexanoicacid
(s)-(+)-4-amino-3-(2-methylpropyl)butanoic acid
(s)-(+)-3-aminomethyl-5-methylhexanoic acid
SCHEMBL8227
pd144723 ,
AB01563007_01
hexanoic acid, 3-(aminomethyl)-5-ethyl-, (3s)-
gaba, 3-isobutyl
3 isobutyl gaba
KS-5378
sr-01000942257
SR-01000942257-2
pregabalin, >=97% (nmr)
pregabalin, europepharmacopoeia (ep) reference standard
pregabalin 1.0 mg/ml in methanol
HMS3715J16
lyrica;ci-1008;pd-144723
(3s)-3-(aminomethyl)-5-methyl hexanoic acid
Q412174
1414928-41-8
pregabalin- bio-x
BP163672
pregabaline
pregabalina
P2840
pregabalin (mart.)
pregabalin extended release
pregabalin (usp monograph)
pregabalin (ep monograph)
n03ax16
pregabalinum
pregabalin capsules, cv
(3s)-3-(aminomethyl)-5-methylhexanoic acid
pregabalin (usp-rs)
pregabalin, 1mg/ml in methanol

Research Excerpts

Toxicity

Pregabalin, in doses of 150-600 mg/day, was a safe and effective treatment of generalised anxiety disorder in patients 65 years and older. The rate of adverse events (sleepiness, dizziness, and headache) was insignificantly higher.

ExcerptReferenceRelevance
" Safety/tolerability assessments included adverse events (AEs), physical and neurologic examinations, and clinical laboratory evaluation."( Safety and efficacy of two pregabalin regimens for add-on treatment of partial epilepsy.
Beydoun, A; Garofalo, EA; Greiner, MJ; Knapp, LE; Kugler, AR; Uthman, BM, 2005
)
0.33
" Discontinuation rates due to associated adverse events were greatest in the venlafaxine treatment group: venlafaxine, 20."( Efficacy and safety of pregabalin in the treatment of generalized anxiety disorder: a 6-week, multicenter, randomized, double-blind, placebo-controlled comparison of pregabalin and venlafaxine.
Kasper, S; Montgomery, SA; Pande, AC; Tobias, K; Zornberg, GL, 2006
)
0.33
" In this study we evaluated randomized, controlled trials examining the analgesic efficacy, adverse effects, and clinical value of gabapentinoids in postoperative pain."( Do surgical patients benefit from perioperative gabapentin/pregabalin? A systematic review of efficacy and safety.
Hamunen, K; Kalso, E; Kontinen, VK; Tiippana, EM, 2007
)
0.34
" Gabapentin reduced opioid-related adverse effects, such as nausea, vomiting, and urinary retention (number-needed-to-treat 25, 6, and 7, respectively)."( Do surgical patients benefit from perioperative gabapentin/pregabalin? A systematic review of efficacy and safety.
Hamunen, K; Kalso, E; Kontinen, VK; Tiippana, EM, 2007
)
0.34
"Gabapentinoids effectively reduce postoperative pain, opioid consumption, and opioid-related adverse effects after surgery."( Do surgical patients benefit from perioperative gabapentin/pregabalin? A systematic review of efficacy and safety.
Hamunen, K; Kalso, E; Kontinen, VK; Tiippana, EM, 2007
)
0.34
" As clinicians face a broader spectrum of efficacious treatments, side-effect profiles play an increasingly important role in the development of a pain management regimen."( Safety profile of treatment in diabetic peripheral neuropathic pain.
Robinson-Papp, J; Simpson, DM, 2007
)
0.34
" The most frequently reported adverse events were dizziness and somnolence, although tolerance to these developed within a few weeks."( Pregabalin: its efficacy, safety and tolerability profile in generalized anxiety.
Owen, RT, 2007
)
0.34
" Overall, pregabalin was well tolerated with no new adverse events emerging that have not been reported with its use in other indications."( Pregabalin: its efficacy, safety and tolerability profile in fibromyalgia syndrome.
Owen, RT, 2007
)
0.34
" The most common treatment-emergent adverse events were dizziness, somnolence, and peripheral edema."( Efficacy, safety, and tolerability of pregabalin treatment for painful diabetic peripheral neuropathy: findings from seven randomized, controlled trials across a range of doses.
Durso-Decruz, E; Emir, B; Freeman, R, 2008
)
0.35
" An additional four patients dropped out during the study, and one stopped taking medication due to adverse events."( Efficacy and safety of pregabalin in alcohol dependence.
Bria, P; Di Nicola, M; Janiri, L; Martinotti, G; Mazza, M; Tedeschi, D, 2008
)
0.35
" Pregabalin was well-tolerated, with almost all adverse events in the mild-to-moderate range, and self-limiting (median duration of 4-16 days)."( Efficacy and safety of pregabalin in elderly people with generalised anxiety disorder.
Baldinetti, F; Chatamra, K; Montgomery, S; Pauer, L; Whalen, E, 2008
)
0.35
"Pregabalin, in doses of 150-600 mg/day, was a safe and effective treatment of generalised anxiety disorder in patients 65 years and older."( Efficacy and safety of pregabalin in elderly people with generalised anxiety disorder.
Baldinetti, F; Chatamra, K; Montgomery, S; Pauer, L; Whalen, E, 2008
)
0.35
" Patients administering lidocaine plaster experienced fewer drug-related adverse events (3."( Efficacy and safety of 5% lidocaine (lignocaine) medicated plaster in comparison with pregabalin in patients with postherpetic neuralgia and diabetic polyneuropathy: interim analysis from an open-label, two-stage adaptive, randomized, controlled trial.
Baron, R; Binder, A; Leijon, G; Mayoral, V; Serpell, M; Steigerwald, I, 2009
)
0.35
"After 4 weeks, 5% lidocaine medicated plaster treatment was associated with similar levels of analgesia in patients with PHN or DPN but substantially fewer frequent adverse events than pregabalin."( Efficacy and safety of 5% lidocaine (lignocaine) medicated plaster in comparison with pregabalin in patients with postherpetic neuralgia and diabetic polyneuropathy: interim analysis from an open-label, two-stage adaptive, randomized, controlled trial.
Baron, R; Binder, A; Leijon, G; Mayoral, V; Serpell, M; Steigerwald, I, 2009
)
0.35
" Safety evaluation included adverse events (AEs), drug-related AEs (DRAEs), and withdrawal due to AEs."( Efficacy and safety of combination therapy with 5% lidocaine medicated plaster and pregabalin in post-herpetic neuralgia and diabetic polyneuropathy.
Baron, R; Binder, A; Leijon, G; Mayoral, V; Serpell, M; Steigerwald, I, 2009
)
0.35
"In patients with PHN and painful DPN failing to respond to monotherapy, combination therapy with 5% lidocaine medicated plaster and pregabalin provides additional clinically relevant pain relief and is safe and well-tolerated."( Efficacy and safety of combination therapy with 5% lidocaine medicated plaster and pregabalin in post-herpetic neuralgia and diabetic polyneuropathy.
Baron, R; Binder, A; Leijon, G; Mayoral, V; Serpell, M; Steigerwald, I, 2009
)
0.35
"The incidence of constipation as an adverse effect of pregabalin has previously been reported as low, with all cases described as either mild or moderate."( Severe and disabling constipation: an adverse effect of pregabalin.
Cook, MJ; D'Souza, WJ; Kamel, JT, 2010
)
0.36
" The proportions of patients with any adverse event, somnolence or dizziness were also significantly greater with pregabalin than with placebo."( Pregabalin in fibromyalgia: meta-analysis of efficacy and safety from company clinical trial reports.
Derry, S; McQuay, HJ; Moore, RA; Straube, S, 2010
)
0.36
" Titration (dose escalation) regimens based on clinical judgment were implemented to mitigate this adverse event and reduce patient dropout across clinical trials."( Modeling dropout from adverse event data: impact of dosing regimens across pregabalin trials in the treatment of generalized anxiety disorder.
Frame, B; Hutmacher, M; Lalovic, B; Miller, R, 2011
)
0.37
" The commonly reported adverse events were dizziness, somnolence, peripheral edema and weight gain, and most of them were mild to moderate in intensity."( [Long-term efficacy and safety of pregabalin in patients with postherpetic neuralgia: results of a 52-week, open-label, flexible-dose study].
Arakawa, A; Ogawa, S; Suzuki, M; Yoshiyama, T, 2010
)
0.36
" Treatments were generally well tolerated; discontinuation rates due to adverse events were 4%, 2%, 5%, 0%, and 1% with standard- and low-dose pregabalin/tolterodine ER, pregabalin, tolterodine ER, and placebo, respectively."( Investigation of the clinical efficacy and safety of pregabalin alone or combined with tolterodine in female subjects with idiopathic overactive bladder.
Cossons, NH; Darekar, A; Marencak, J; Mills, IW, 2011
)
0.37
" Safety was based on adverse events (AEs)."( Evaluation of the safety and efficacy of pregabalin in older patients with neuropathic pain: results from a pooled analysis of 11 clinical studies.
Cheung, R; Emir, B; Murphy, TK; Semel, D; Zlateva, G, 2010
)
0.36
" Pregabalin was well tolerated; somnolence (26%), dizziness (24%), peripheral oedema (13%) and weight gain (11%) were the most common adverse events and generally were reported as mild to moderate."( Efficacy and safety of pregabalin for treating neuropathic pain associated with diabetic peripheral neuropathy: a 14 week, randomized, double-blind, placebo-controlled trial.
Arakawa, A; Baba, M; Satoh, J; Shoji, S; Suzuki, M; Yagihashi, S; Yoshiyama, T, 2011
)
0.37
" Adverse events were more frequent with pregabalin than with placebo and caused discontinuation in 9 (8."( Safety and efficacy of pregabalin in patients with central post-stroke pain.
Bashford, G; Cheung, R; Dror, V; Kim, JS; Martin, A; Murphy, KT, 2011
)
0.37
" We aimed at identifying treatment emergent adverse events (AEs) associated with pregabalin through a systematic review and meta-analysis of all available RCTs."( The adverse event profile of pregabalin: a systematic review and meta-analysis of randomized controlled trials.
Gangemi, P; Perucca, P; Specchio, L; Zaccara, G, 2011
)
0.37
"Information about the time course of adverse drug reactions (ADRs) is often lacking."( Longitudinal monitoring of the safety of drugs by using a web-based system: the case of pregabalin.
Grootheest, K; Härmark, L; Puijenbroek, E, 2011
)
0.37
" Safety was evaluated using adverse events (AEs)."( Pregabalin or placebo used adjunctively with levetiracetam in refractory partial-onset epilepsy: a post hoc efficacy and safety analysis in combined clinical trials.
Almas, M; Emir, B; Giordano, S; Leon, T; Uthman, BM, 2011
)
0.37
" Adverse events were typical of pregabalin and, in general, did not vary as the number of concomitant AEDs increased."( The impact of background antiepileptic drugs on the efficacy and safety of pregabalin in treating partial-onset seizures: a post hoc analysis of combined clinical trials.
Almas, M; Cabrera, J; Giordano, S; Tomson, T, 2011
)
0.37
"To report a case of acute elevation of hepatic enzyme levels as a probable adverse reaction associated with pregabalin."( Pregabalin-induced hepatotoxicity.
Junyent, TT; Pellicer, MJ; Sendra, JM, 2011
)
0.37
" Reported adverse effects were also analysed."( Efficacy and safety of perioperative pregabalin for post-operative pain: a meta-analysis of randomized-controlled trials.
Cateloy, F; Engelman, E, 2011
)
0.37
"Efficacious and safe monotherapy options are needed for adult patients with newly diagnosed epilepsy."( Efficacy and safety of pregabalin versus lamotrigine in patients with newly diagnosed partial seizures: a phase 3, double-blind, randomised, parallel-group trial.
Brodie, MJ; Kälviäinen, R; Knapp, LE; Kwan, P; Weaver, J; Yurkewicz, L, 2011
)
0.37
" The overall incidence of adverse events was similar between the groups and consistent with that in previous studies; dizziness (55 [17%] vs 45 [14%] patients), somnolence (29 [9%] vs 14 [4%]), fatigue (27 [8%] vs 19 [6%]), and weight increase (21 [6%] vs 7 [2%]) were numerically more common in the pregabalin group than in the lamotrigine group."( Efficacy and safety of pregabalin versus lamotrigine in patients with newly diagnosed partial seizures: a phase 3, double-blind, randomised, parallel-group trial.
Brodie, MJ; Kälviäinen, R; Knapp, LE; Kwan, P; Weaver, J; Yurkewicz, L, 2011
)
0.37
"Pregabalin and placebo were equally safe and well tolerated."( Efficacy and safety of pregabalin in the treatment of alcohol withdrawal syndrome: a randomized placebo-controlled trial.
Förg, A; Hein, J; Heinz, A; Müller, CA; Richter, C; Volkmar, K; Winter, M,
)
0.13
"In a recent meta-analysis of 38 double-blind randomized controlled trials (RCTs) comparing pregabalin (PGB) to placebo, we found 20 adverse events (AEs) to be significantly associated with PGB treatment."( The adverse event profile of pregabalin across different disorders: a meta-analysis.
Gangemi, PF; Perucca, P; Zaccara, G, 2012
)
0.38
"The adverse effect profile of this medication from controlled, randomized studies as well as open and long-term studies is described with consideration of the evidence-based results for pregabalin's clinical use."( Drug safety evaluation of pregabalin.
Toth, C, 2012
)
0.38
" Pregabalin use is associated with benign central nervous system and systemic adverse effects with very limited metabolic, idiosyncratic, or teratogenic adverse effects."( Drug safety evaluation of pregabalin.
Toth, C, 2012
)
0.38
"9%) permanently discontinued study participation due to treatment-emergent adverse events (all causality) at 12 weeks (pooled data) and 53 of 429 (12."( Safety profile and tolerability of up to 1 year of pregabalin treatment in 3 open-label extension studies in patients with fibromyalgia.
Arnold, LM; Emir, B; Murphy, TK; Pauer, L; Petersel, D; Scott, G; Zeiher, BG, 2012
)
0.38
"The data from these extension studies suggest that the adverse event safety profile and tolerability of patients with FM treated with open-label pregabalin (75-300 mg BID) for up to 1 year were stable and were consistent with those of previous studies."( Safety profile and tolerability of up to 1 year of pregabalin treatment in 3 open-label extension studies in patients with fibromyalgia.
Arnold, LM; Emir, B; Murphy, TK; Pauer, L; Petersel, D; Scott, G; Zeiher, BG, 2012
)
0.38
" The relative scarcity and controversial evidential status of available pharmacological interventions for the treatment of patients' acute withdrawal syndrome and/or relapse prevention call for the clinical investigation of novel safe and efficacious agents."( Efficacy and safety of pregabalin in the treatment of alcohol and benzodiazepine dependence.
Konstantakopoulos, G; Oulis, P, 2012
)
0.38
"Available evidence suggests that monotherapy with pregabalin, within the dosage range of 150 - 600 mg/d, is a promising "novel" option for the safe and efficacious relapse prevention of both AD and BD."( Efficacy and safety of pregabalin in the treatment of alcohol and benzodiazepine dependence.
Konstantakopoulos, G; Oulis, P, 2012
)
0.38
"Pregabalin is one of the first-line treatments for painful diabetic peripheral neuropathy in many countries, and we have administered it to relieve the neurotoxicity associated with adverse effects of VCR in a DLBCL patient treated with the R-CHOP regimen."( [A case of neurotoxicity reduced with pregabalin in R-CHOP chemotherapy for diffuse large B-cell lymphoma].
Hosokawa, A; Ito, T; Kiba, T; Kido, M; Kimura, A; Kozawa, K; Nakashima, T; Niimi, H; Ogawa, Y; Okada, Y; Okikawa, Y; Saito, A; Shintani, H; Taniguchi, T; Taniyama, K, 2012
)
0.38
" Descriptive safety data from the original trials were reviewed and the most commonly reported adverse events (AEs; dizziness, somnolence, peripheral oedema and weight gain) were identified to be of primary interest."( Pregabalin treatment for peripheral neuropathic pain: a review of safety data from randomized controlled trials conducted in Japan and in the west.
Arakawa, A; Ogawa, S; Satoh, J; Suzuki, M; Yoshiyama, T, 2012
)
0.38
" Treatment was generally well tolerated, with somnolence and dizziness the most frequently reported adverse events."( A randomized, double-blind, multicenter, placebo-controlled phase III trial to evaluate the efficacy and safety of pregabalin in Japanese patients with fibromyalgia.
Nishioka, K; Ohkura, M; Ohta, H; Oka, H; Suzuki, M; Usui, C, 2012
)
0.38
" The most common treatment-related adverse events were somnolence, dizziness, increased weight, and constipation."( An open-label long-term phase III extension trial to evaluate the safety and efficacy of pregabalin in Japanese patients with fibromyalgia.
Nishioka, K; Ohkura, M; Ohta, H; Oka, H; Suzuki, M; Usui, C, 2013
)
0.39
"These data indicate that the long-term treatment of Japanese FM patients with pregabalin may be both safe and effective."( An open-label long-term phase III extension trial to evaluate the safety and efficacy of pregabalin in Japanese patients with fibromyalgia.
Nishioka, K; Ohkura, M; Ohta, H; Oka, H; Suzuki, M; Usui, C, 2013
)
0.39
" The primary endpoint was a ≥1/3 reduction in pain (NRS); secondary endpoints included the time to analgesia and adverse effects."( Randomised phase II trial (NCT00637975) evaluating activity and toxicity of two different escalating strategies for pregabalin and oxycodone combination therapy for neuropathic pain in cancer patients.
Bianchi, A; Bramati, A; Carbone, C; Farina, G; Febbraro, A; Ganzinelli, M; Garassino, MC; Gentili, M; Iorno, V; La Verde, N; Marabese, M; Moretti, A; Piva, S; Spagnoletti, I; Torri, V, 2013
)
0.39
"5%) was the only treatment-related adverse event (AE) occurring ≥10%."( Long-term treatment of anxiety disorders with pregabalin: a 1 year open-label study of safety and tolerability.
Emir, B; Haswell, H; Montgomery, S; Prieto, R, 2013
)
0.39
" While there was a decrease in total patient-reported adverse events in the once nightly arm, the lack of specificity in relation to a particular adverse event suggested no real difference in adverse events."( Twice daily versus once nightly dosing of pregabalin for fibromyalgia: a double-blind randomized clinical trial of efficacy and safety.
Kivitz, AJ; Maricic, MJ; Nasser, K; Silver, DS; Silverman, SL, 2014
)
0.4
" Adverse events (AEs) were also compared between treatment groups."( Efficacy and safety of pregabalin in patients with spinal cord injury: a pooled analysis.
Emir, B; Juhn, M; Parsons, B; Sanin, L; Yang, R, 2013
)
0.39
" Endpoints were responder rate, seizure frequency, adverse events, and anxiety symptoms."( Efficacy and safety of pregabalin in refractory focal epilepsy with and without comorbid anxiety disorders - results of an open-label, parallel group, investigator-initiated, proof-of-concept study.
Brandt, C; Fueratsch, N; May, TW; Pohlmann-Eden, B; Schoendienst, M; Schrecke, M; Trentowska, M; Witte-Boelt, K, 2013
)
0.39
" In 28-37% of patients, pregabalin was associated with adverse events, with drowsiness and dizziness being frequently observed."( [Efficacy and safety of pregabalin for oxaliplatin- and paclitaxel-induced peripheral neuropathy].
Itabashi, T; Kashiwaba, M; Kudo, K; Nihei, S; Sato, J; Takahashi, K, 2013
)
0.39
" In this analysis, patient-level data from 31 randomized clinical trials of pregabalin in peripheral NeP sponsored by Pfizer were pooled and assessed for incidence of adverse events (AEs)."( A comprehensive drug safety evaluation of pregabalin in peripheral neuropathic pain.
Clair, A; Emir, B; Freynhagen, R; Latymer, M; Parsons, B; Serpell, M; Whalen, E, 2015
)
0.42
" We chose the number of patients experiencing = 50% reduction in pain and number of patient withdrawals due to adverse events (AE) as primary outcomes for efficacy and safety, respectively."( Comparative efficacy and safety of six antidepressants and anticonvulsants in painful diabetic neuropathy: a network meta-analysis.
Bansal, D; Bhansali, A; Ghai, B; Gudala, K; Hota, D; Rudroju, N; Talakokkula, ST,
)
0.13
"Gabapentin was found to be most efficacious and amitriptyline to be least safe among the treatments included in the study."( Comparative efficacy and safety of six antidepressants and anticonvulsants in painful diabetic neuropathy: a network meta-analysis.
Bansal, D; Bhansali, A; Ghai, B; Gudala, K; Hota, D; Rudroju, N; Talakokkula, ST,
)
0.13
" Discontinuation because of adverse events was significantly greater in the duloxetine (19."( Comparative safety and tolerability of duloxetine vs. pregabalin vs. duloxetine plus gabapentin in patients with diabetic peripheral neuropathic pain.
Irving, G; Malcolm, S; Raskin, J; Risser, RC; Tanenberg, RJ, 2014
)
0.4
"Duloxetine, pregabalin and duloxetine plus gabapentin were generally safe and tolerable for the treatment of DPNP."( Comparative safety and tolerability of duloxetine vs. pregabalin vs. duloxetine plus gabapentin in patients with diabetic peripheral neuropathic pain.
Irving, G; Malcolm, S; Raskin, J; Risser, RC; Tanenberg, RJ, 2014
)
0.4
" Incidence of adverse events was lower than seen in previous pregabalin studies."( A randomized, double-blind, placebo-controlled trial and open-label extension study to evaluate the efficacy and safety of pregabalin in the treatment of neuropathic pain associated with human immunodeficiency virus neuropathy.
Chew, ML; Emir, B; Landen, J; Rice, AS; Semel, D; Simpson, DM; Sporn, J, 2014
)
0.4
"Pregabalin administration is occasionally abandoned due to adverse events such as somnolence, dizziness, unsteadiness, weight gain and edema."( Factors predicting adverse events associated with pregabalin administered for neuropathic pain relief.
Hosokawa, T; Kanbayashi, Y; Onishi, K,
)
0.13
"To identify factors predicting adverse events associated with pregabalin administered for neuropathic pain."( Factors predicting adverse events associated with pregabalin administered for neuropathic pain relief.
Hosokawa, T; Kanbayashi, Y; Onishi, K,
)
0.13
" Variables were extracted from the clinical records for regression analysis of factors related to the occurrence of adverse events associated with pregabalin administration."( Factors predicting adverse events associated with pregabalin administered for neuropathic pain relief.
Hosokawa, T; Kanbayashi, Y; Onishi, K,
)
0.13
"The results of the present study indicate that care is warranted regarding long durations of therapy for somnolence, advanced age rather than dose-dependent adverse events for unsteadiness, elevated serum creatinine level for weight gain, and elevated serum creatinine level and combination use of neurotropin for edema."( Factors predicting adverse events associated with pregabalin administered for neuropathic pain relief.
Hosokawa, T; Kanbayashi, Y; Onishi, K,
)
0.13
" Safety assessments included adverse events (AEs), clinical laboratory tests, and electrocardiograms."( Efficacy and safety of mirogabalin (DS-5565) for the treatment of diabetic peripheral neuropathic pain: a randomized, double-blind, placebo- and active comparator-controlled, adaptive proof-of-concept phase 2 study.
Feins, K; Hsu, C; Merante, D; Rosenstock, J; Sharma, U; Vinik, A, 2014
)
0.4
" Delayed corneal reepithelialization was a common side effect of both topical anesthetics and topical NSAIDs."( Efficacy and safety of pain relief medications after photorefractive keratectomy: review of prospective randomized trials.
Faktorovich, EG; Melwani, K, 2014
)
0.4
" Two children experienced serious adverse events, one of whom received pregabalin 15 mg/kg/day."( Safety, tolerability, and pharmacokinetics of pregabalin in children with refractory partial seizures: a phase 1, randomized controlled study.
Alvey, CW; Bockbrader, H; Chew, ML; Liu, J; Mann, D; Pellock, J; Pitman, VW; Zegarac, E, 2014
)
0.4
"Weight gain and alopecia were the most common patient-reported CSEs in this study, and weight gain was the most likely cosmetic side effect to result in dosage adjustment or medication discontinuation."( Cosmetic side effects of antiepileptic drugs in adults with epilepsy.
Buchsbaum, R; Chen, B; Choi, H; Detyniecki, K; Hirsch, LJ; Javed, A; Kato, K; Legge, A; Moeller, J, 2015
)
0.42
" The primary outcome measure was the decrements in morphine dose; secondary outcomes included quantitative assessments of sleep (rated according to the Medical Outcomes Study Sleep Scale), the Constipation Assessment Scale and adverse effects."( Efficacy and safety of pregabalin in patients with neuropathic cancer pain undergoing morphine therapy.
Dou, Z; Jiang, Z; Zhong, J, 2017
)
0.46
"PGB enhances the efficacy of oral morphine and reduces dose-related adverse reactions."( Efficacy and safety of pregabalin in patients with neuropathic cancer pain undergoing morphine therapy.
Dou, Z; Jiang, Z; Zhong, J, 2017
)
0.46
" Adverse events were more frequent with pregabalin than with placebo and caused discontinuation in 13 (6."( Efficacy and Safety of Pregabalin in the Treatment of Patients With Painful Diabetic Peripheral Neuropathy and Pain on Walking.
Behar, R; Burbridge, C; Huffman, C; Li, C; Parsons, B; Pauer, L; Scavone, JM; Stacey, BR; Tuchman, M; Yurkewicz, L, 2015
)
0.42
" A discussion of pregabalin dosing and adverse events is also presented."( Pregabalin for painful diabetic peripheral neuropathy: strategies for dosing, monotherapy vs. combination therapy, treatment-refractory patients, and adverse events.
Juhn, MS; Parsons, B; Sadosky, A; Varvara, R, 2015
)
0.42
" The two most common adverse events with pregabalin are somnolence and dizziness, both of which appear to be dose-related."( Efficacy and safety of pregabalin in generalised anxiety disorder: A critical review of the literature.
Baldwin, DS; den Boer, JA; Emir, B; Haswell, H; Lyndon, G; Schweizer, E, 2015
)
0.42
"Endpoints included mean change in pain and sleep quality scores (Weeks 8 and 12), patient-reported outcomes, and adverse events (AEs)."( The safety and efficacy of pregabalin for treating subjects with fibromyalgia and moderate or severe baseline widespread pain.
Clair, A; Emir, B, 2016
)
0.43
" Adverse events were consistent with current product labeling, with dizziness the most commonly reported adverse event (24."( A Randomized, Double-blind, Placebo-controlled Trial to Evaluate the Efficacy and Safety of Pregabalin for Postherpetic Neuralgia in a Population of Chinese Patients.
Chen, H; Fan, D; Fang, H; Fu, Y; He, L; Hong, Z; Liu, Q; Shang, N; Xi, L; Yan, P, 2017
)
0.46
"Assessment and reporting of adverse events (AEs) in studies of perioperative interventions is critical given the potential for unintended and preventable iatrogenic morbidity and mortality."( Adverse event assessment and reporting in trials of newer treatments for post-operative pain.
Allard, R; Gilron, I; Hoffer, D; Parlow, J; Smith, SM, 2016
)
0.43
" No treatment-related differences in the incidence of skull bone fusions occurred on PND 21, indicating no permanent adverse outcome."( Developmental Toxicity Studies with Pregabalin in Rats: Significance of Alterations in Skull Bone Morphology.
Bailey, SA; Henck, JW; Morse, DC, 2016
)
0.43
" Ten patients were withdrawn from the study because of drowsiness, dizziness, and invalidity; however, no serious adverse drug reactions were recorded."( Efficacy and Safety of Pregabalin for the Treatment of Neuropathic Pain in Patients Undergoing Hemodialysis.
Abe, M; Higuchi, T; Okada, K; Okawa, E; Otsuki, T; Yamazaki, T, 2017
)
0.46
"If adverse effects are carefully monitored and the administered dosage prudently determined, pregabalin can be an effective treatment for peripheral neuropathic pain in patients undergoing hemodialysis."( Efficacy and Safety of Pregabalin for the Treatment of Neuropathic Pain in Patients Undergoing Hemodialysis.
Abe, M; Higuchi, T; Okada, K; Okawa, E; Otsuki, T; Yamazaki, T, 2017
)
0.46
" Primary efficacy outcome was time to loss of therapeutic response (LTR) (<30% decrease in weekly mean pain score from single-blind baseline or discontinuation due to adverse event or lack of efficacy)."( Efficacy and Safety of Once-Daily Controlled-Release Pregabalin for the Treatment of Patients With Postherpetic Neuralgia: A Double-Blind, Enriched Enrollment Randomized Withdrawal, Placebo-Controlled Trial.
Chew, ML; Driscoll, J; Goldenberg, JN; Huffman, CL; Sanin, L; Scavone, JM; Weintraub, J; Yang, R, 2017
)
0.46
" Most commonly reported adverse events in the single-blind phase were dizziness, somnolence, and peripheral edema."( Efficacy and Safety of Once-Daily Controlled-Release Pregabalin for the Treatment of Patients With Postherpetic Neuralgia: A Double-Blind, Enriched Enrollment Randomized Withdrawal, Placebo-Controlled Trial.
Chew, ML; Driscoll, J; Goldenberg, JN; Huffman, CL; Sanin, L; Scavone, JM; Weintraub, J; Yang, R, 2017
)
0.46
" Patients' demographic and clinical characteristics, resource utilization data and adverse drug reactions (ADRs) as described in the leaflet were extracted."( Characteristics, resource utilization and safety profile of patients prescribed with neuropathic pain treatments: a real-world evidence study on general practices in Europe - the role of the lidocaine 5% medicated plaster.
Katz, P; Liedgens, H; Pegoraro, V, 2017
)
0.46
" The postoperative narcotic requirements, visual analog scale scores, knee flexion range, and relative risk of incidence rate of adverse effects in the pregabalin group versus placebo group were extracted throughout the study."( Is pregabalin effective and safe in total knee arthroplasty? A PRISMA-compliant meta-analysis of randomized-controlled trials.
Han, C; Kuang, MJ; Ma, JX; Ma, XL, 2017
)
0.46
"The administration of pregabalin is not only efficacious in the reduction of narcotic requirements and incidence of some adverse effect, but also workable for the improvement of passive knee flexion range after TKA."( Is pregabalin effective and safe in total knee arthroplasty? A PRISMA-compliant meta-analysis of randomized-controlled trials.
Han, C; Kuang, MJ; Ma, JX; Ma, XL, 2017
)
0.46
" Adverse events (AEs) were reported."( Efficacy and safety of pregabalin for painful diabetic peripheral neuropathy in a population of Chinese patients: A randomized placebo-controlled trial.
Chen, K; Fan, D; Li, Q; Liu, X; Liu, Y; Lv, X; Mu, Y; Pan, C; Pauer, L; Shang, N; Xu, X; Yang, R, 2018
)
0.48
" They necessitate prolonged use and are associated with adverse effects and increased cost."( Benefits and safety of gabapentinoids in chronic low back pain: A systematic review and meta-analysis of randomized controlled trials.
AlAmri, R; Bhandari, M; Devereaux, PJ; Gilron, I; Kamath, S; Rajarathinam, M; Shanthanna, H; Thabane, L, 2017
)
0.46
"Existing evidence on the use of gabapentinoids in CLBP is limited and demonstrates significant risk of adverse effects without any demonstrated benefit."( Benefits and safety of gabapentinoids in chronic low back pain: A systematic review and meta-analysis of randomized controlled trials.
AlAmri, R; Bhandari, M; Devereaux, PJ; Gilron, I; Kamath, S; Rajarathinam, M; Shanthanna, H; Thabane, L, 2017
)
0.46
"3%) patients reported adverse events."( Efficacy and safety of oxycodone/naloxone as add-on therapy to gabapentin or pregabalin for the management of chemotherapy-induced peripheral neuropathy in Korea.
Jin, JY; Kang, JH; Kim, BS; Ko, YH; Kwon, JH; Park, HJ; Park, SY; Woo, IS, 2018
)
0.48
"0%) but no increase in the rates of other adverse birth outcomes."( Safety of Pregabalin in Pregnancy.
Andrade, C, 2018
)
0.48
" Pain and safety-related adverse events were considered as outcomes."( Efficacy and Safety of Pregabalin in Neuropathic Pain Followed Spinal Cord Injury: A Review and Meta-Analysis of Randomized Controlled Trials.
Huang, W; Li, J; Liu, T; Wu, B; Yang, K; Yu, X; Zhang, M; Zhang, S; Zhang, X; Zhao, D, 2019
)
0.51
"Our results showed pregabalin was efficacious and might be safe treatment for chronic pain followed SCI."( Efficacy and Safety of Pregabalin in Neuropathic Pain Followed Spinal Cord Injury: A Review and Meta-Analysis of Randomized Controlled Trials.
Huang, W; Li, J; Liu, T; Wu, B; Yang, K; Yu, X; Zhang, M; Zhang, S; Zhang, X; Zhao, D, 2019
)
0.51
" The aim of this study was to obtain the onset profiles of adverse events (AE) related to falls (AEFs) such as "somnolence," "dizziness," "loss of consciousness" and "fall" onset and several clinical factor combinations such as age and administered dose, using spontaneous reporting system (SRS) analysis such as the US Food and Drug Administration Adverse Event Reporting System (FAERS) database and the Japanese Adverse Drug Event Report (JADER) database."( Evaluation of pregabalin-induced adverse events related to falls using the FDA adverse event reporting system and Japanese Adverse Drug Event Report databases.
Hasegawa, S; Masuta, M; Mukai, R; Nakamura, M; Nakao, S; Nishibata, Y; Shimada, K; Suzuki, H; Umetsu, R; Uranishi, H, 2019
)
0.51
"Antiepileptic drugs (AEDs) are increasingly used, and knowledge about adverse effects is scarce based on clinical studies."( Safety aspects of antiepileptic drugs-a population-based study of adverse effects relative to changes in utilisation.
Baftiu, A; Johannessen, SI; Landmark, CJ; Larsson, PG; Lima, MH; Svendsen, K, 2019
)
0.51
"Aggregated data of adverse effects reported for AEDs in Norway from the EudraVigilance-database (2004-2013) in addition to indication-specific use of AEDs during 2004-2015 from the Norwegian Prescription Database were used."( Safety aspects of antiepileptic drugs-a population-based study of adverse effects relative to changes in utilisation.
Baftiu, A; Johannessen, SI; Landmark, CJ; Larsson, PG; Lima, MH; Svendsen, K, 2019
)
0.51
" There were 1593 adverse effects reported (403 Individual Case Safety Reports, 2/3 women), 0-95 years (mean 46)."( Safety aspects of antiepileptic drugs-a population-based study of adverse effects relative to changes in utilisation.
Baftiu, A; Johannessen, SI; Landmark, CJ; Larsson, PG; Lima, MH; Svendsen, K, 2019
)
0.51
"This study demonstrates that most adverse effects reported concerned AEDs increasingly used in non-epilepsy indications: neuropathic pain (pregabalin, gabapentin, carbamazepine) and psychiatry (lamotrigine, valproate, carbamazepine)."( Safety aspects of antiepileptic drugs-a population-based study of adverse effects relative to changes in utilisation.
Baftiu, A; Johannessen, SI; Landmark, CJ; Larsson, PG; Lima, MH; Svendsen, K, 2019
)
0.51
" The rates of adverse effects were generally found to be decreased in patients who received pregabalin compared to the patients who received routine analgesia, although 2 studies reported significantly higher incidences of mild drowsiness and dizziness among the pregabalin-treated patients."( Does pregabalin effectively and safely relieve postoperative pain in patients undergoing pulmonary resections?
Cheng, S; Li, S; Li, Y; Zhang, W, 2019
)
0.51
" Pharmacovigilance data from the Food and Drug Administration Adverse Event Reporting System (FAERS) provides a useful examination of adverse drug event (ADE) reporting for safety signal detection."( Reports of gabapentin and pregabalin abuse, misuse, dependence, or overdose: An analysis of the Food And Drug Administration Adverse Events Reporting System (FAERS).
Covvey, JR; Evoy, KE; Hultgren, KE; Ochs, L; Peckham, AM, 2019
)
0.51
"Using FDA Adverse Events Reporting System reports from January 1, 2005 to December 31, 2015, we calculated pharmacovigilance signal measures (i."( Gabapentin drug misuse signals: A pharmacovigilance assessment using the FDA adverse event reporting system.
Charnigo, RJ; Havens, JR; Lofwall, MR; Sun, J; Vickers-Smith, R; Walsh, SL, 2020
)
0.56
" Patients with breast cancer who received paclitaxel or docetaxel and had a grade 1 or more neuropathy (based on the National Cancer Institute Common Terminology Criteria for Adverse Events version (NCI-CTCAE v4."( Comparison of the Efficacy and Safety of Pregabalin and Duloxetine in Taxane-Induced Sensory Neuropathy: A Randomized Controlled Trial.
Alipour, A; Avan, R; Hendouei, N; Janbabaei, G; Salehifar, E; Tabrizi, N, 2020
)
0.56
" Both interventions were tolerated well with mild adverse events."( Comparison of the Efficacy and Safety of Pregabalin and Duloxetine in Taxane-Induced Sensory Neuropathy: A Randomized Controlled Trial.
Alipour, A; Avan, R; Hendouei, N; Janbabaei, G; Salehifar, E; Tabrizi, N, 2020
)
0.56
" The rate of adverse events (sleepiness, dizziness, and headache) was insignificantly higher in the pregabalin group compared with the placebo group."( [A double blind placebo controlled randomized clinical trial of the efficacy and safety of pregabalin in induction of remission in patients with alcohol dependence].
Krupitsky, EM; Neznanov, NG; Rybakova, KV; Semenova, NV; Skurat, EP, 2020
)
0.56
"Results of this study provide evidence that pregabalin in a low dose of 150 mg per day is an effective and safe medication for relapse prevention and reduction of drinking in patients with alcohol dependence."( [A double blind placebo controlled randomized clinical trial of the efficacy and safety of pregabalin in induction of remission in patients with alcohol dependence].
Krupitsky, EM; Neznanov, NG; Rybakova, KV; Semenova, NV; Skurat, EP, 2020
)
0.56
" The present study aimed to investigate the toxic effect of long term pregabalin abuse on the reproductive function and body weight in both male and female albino rats and to evaluate the ameliorative effect of wheat germ oil (WGO)."( Pregabalin induced reproductive toxicity and body weight changes by affecting caspase3 and leptin expression: Protective role of wheat germ oil.
Batiha, GE; El Nabrawy, N; Gaber, SS; Shokry, DA; Welson, NN; Yassa, HD, 2020
)
0.56
" Compared with placebo, mirogabalin was significantly associated with more adverse events of dizziness, increased weight, peripheral oedema and somnolence."( Efficacy and safety of mirogabalin treatment in patients with diabetic peripheral neuropathic pain: A systematic review and meta-analysis of randomised controlled trials.
Abu-Zaid, A; Alabdulwahed, A; Aldughaither, SM; Alduraibi, FM; Aljaroudi, AM; Alshareef, AA; Alyoubi, RA; Masoud, AT, 2021
)
0.62
" Besides, mirogabalin was largely safe and associated with some adverse events that could be managed conservatively."( Efficacy and safety of mirogabalin treatment in patients with diabetic peripheral neuropathic pain: A systematic review and meta-analysis of randomised controlled trials.
Abu-Zaid, A; Alabdulwahed, A; Aldughaither, SM; Alduraibi, FM; Aljaroudi, AM; Alshareef, AA; Alyoubi, RA; Masoud, AT, 2021
)
0.62
" The overall adverse event profile of the groups was similar, and no serious adverse drug reactions were observed."( Efficacy and Safety of the Controlled-release Pregabalin Tablet (GLA5PR GLARS-NF1) and Immediate-release Pregabalin Capsule for Peripheral Neuropathic Pain: A Multicenter, Randomized, Double-blind, Parallel-group, Active-controlled, Phase III Clinical Tri
Choi, SS; Jeon, Y; Kim, YC; Ko, Y; Lee, JH; Lee, MK; Lee, PB; Min, K; Sim, SE; Song, SO; Suh, JH; Yu, JM, 2020
)
0.56
" Therefore, this study assessed the toxic effects of chronic pregabalin dependence as well as withdrawal on the cortical neurons of the frontal lobe."( Neurotoxic effects of pregabalin dependence on the brain frontal cortex in adult male albino rats.
Elgazzar, FM; Elseady, WS; Hafez, AS, 2021
)
0.62
"To establish the efficacy of medications, incidence of adverse events (AEs), and withdrawal rates associated with the pharmacological management of chronic spinal cord injury pain."( The Efficacy, Adverse Events, and Withdrawal Rates of the Pharmacological Management of Chronic Spinal Cord Injury Pain: A Systematic Review and Meta-Analysis.
Blake, C; Canavan, C; Doody, C; Fullen, BM; Inoue, T; McMahon, S, 2022
)
0.72
"This SR aims to assess the effectiveness of pregabalin and gabapentin on pain and disability caused by acute sciatica and the adverse events associated with their clinical use."( A systematic review and meta-analysis of the effectiveness and adverse events of gabapentin and pregabalin for sciatica pain.
Carbonell-Sanchís, R; Díaz-Cambronero, JI; Giménez-Campos, MS; López-Briz, E; Pimenta-Fermisson-Ramos, P; Ruíz-García, V, 2022
)
0.72
"The outcomes were pain, disability and adverse events."( A systematic review and meta-analysis of the effectiveness and adverse events of gabapentin and pregabalin for sciatica pain.
Carbonell-Sanchís, R; Díaz-Cambronero, JI; Giménez-Campos, MS; López-Briz, E; Pimenta-Fermisson-Ramos, P; Ruíz-García, V, 2022
)
0.72
" To inform their safe prescribing in older adults with chronic kidney disease (CKD), we examined the 30-day risk of serious adverse events according to the prescribed starting dose."( Higher-Dose Gabapentinoids and the Risk of Adverse Events in Older Adults With CKD: A Population-Based Cohort Study.
Ahmadi, F; Blake, PG; Cowan, A; Fleet, JL; Garg, AX; Muanda, FT; Sontrop, JM; Weir, MA, 2022
)
0.72
" Drug-related treatment-emergent adverse events (TEAEs) were comparable between both groups."( Efficacy and Safety of a New Sustained-release Pregabalin Formulation Compared With Immediate-release Pregabalin in Patients With Peripheral Neuropathic Pain: A Randomized Noninferiority Phase 3 Trial.
An, T; Cha, BY; Chung, CH; Han, KA; Jang, HC; Kim, BJ; Kim, S; Kim, SY; Kim, YC; Ko, YK; Lee, KW; Lee, PB; Lee, YH; Son, HS; Song, KH, 2022
)
0.72
" The mainstay of treatment is with multiple anti-seizure medications (ASMs); however, the ASMs themselves can be associated with psychobehavioural adverse events, and effects (negative or positive) on cognition and sleep."( Psychobehavioural and Cognitive Adverse Events of Anti-Seizure Medications for the Treatment of Developmental and Epileptic Encephalopathies.
Schubert-Bast, S; Strzelczyk, A, 2022
)
0.72
"All nine drugs can relieve the pain of CPSP patients to different degrees; among them pregabalin and gabapentin have the most significant effect, and gabapentin and pregabalin also have the most adverse reactions."( Efficacy and safety of different antidepressants and anticonvulsants in central poststroke pain: A network meta-analysis and systematic review.
Chen, KY; Li, RY, 2022
)
0.72
" Because of the high heterogeneity of outcomes regarding adverse effects, there is no conclusion regarding the safety of pregabalin in eye pain."( Efficacy and safety of pregabalin in eye pain: A systematic review.
Chen, X; He, Y; Shen, X; Xu, H; Zhu, J, 2023
)
0.91
" The majority of adverse events pertained to the nervous system (7 effects) or psychiatric (3 effects) disorders."( The safety and efficacy of gabapentinoids in the management of neuropathic pain: a systematic review with meta-analysis of randomised controlled trials.
Eldabe, S; Meaadi, J; Nazar, H; Obara, I, 2023
)
0.91
"Despite RCTs documenting the adverse events of gabapentionoids on the nervous system, there was no evidence of gabapentinoid use leading to addiction, suggesting an urgent need to design studies investigating their abusive potential."( The safety and efficacy of gabapentinoids in the management of neuropathic pain: a systematic review with meta-analysis of randomised controlled trials.
Eldabe, S; Meaadi, J; Nazar, H; Obara, I, 2023
)
0.91
" prevalent users of mirogabalin and pregabalin in September 2020 and reported data regarding baseline and adverse events to the Japan Pharmaceutical Association using web-based questionnaires."( Safety of mirogabalin and pregabalin in Japanese patients with neuropathic pain: a retrospective cohort study.
Hashiba, H; Kamei, M; Miyazaki, C; Nakajima, R; Ooba, N,
)
0.13
" Although serious events were not reported, a marked difference in HRs of common adverse events, including somnolence (1."( Safety of mirogabalin and pregabalin in Japanese patients with neuropathic pain: a retrospective cohort study.
Hashiba, H; Kamei, M; Miyazaki, C; Nakajima, R; Ooba, N,
)
0.13

Pharmacokinetics

Pregabalin is a second-generation antiepileptic drug (AED) developed after gabapentin. The pharmacokinetic disposition of pregabalin was changed in the association with amitriptyline.

ExcerptReferenceRelevance
" Pregabalin pharmacokinetic parameters were evaluated by established noncompartmental methods."( Pharmacokinetics of pregabalin in subjects with various degrees of renal function.
Alvey, CW; Bockbrader, HN; Cook, JA; Posvar, EL; Randinitis, EJ; Sedman, AJ, 2003
)
0.32
" Likewise, PGB steady-state pharmacokinetic parameter values were similar among patients receiving CBZ, PHT, LTG, or VPA and, in general, were similar to those observed historically in healthy subjects receiving PGB alone."( Pregabalin drug interaction studies: lack of effect on the pharmacokinetics of carbamazepine, phenytoin, lamotrigine, and valproate in patients with partial epilepsy.
Alvey, CW; Bockbrader, HN; Brodie, MJ; Bron, NJ; Gibson, GL; Hounslow, NJ; Posvar, EL; Randinitis, EJ; Wesche, DL; Wilson, EA, 2005
)
0.33
" For drugs that are eliminated renally completely unchanged (gabapentin, pregabalin and vigabatrin) or mainly unchanged (levetiracetam and topiramate), the pharmacokinetic variability is less pronounced and more predictable."( Pharmacokinetic variability of newer antiepileptic drugs: when is monitoring needed?
Johannessen, SI; Tomson, T, 2006
)
0.33
" The focus of this study was to determine the influence of sildenafil on the pharmacokinetics (PK) of pregabalin with the objective of informing the design of a quantitative pharmacodynamic (PD) study."( Population pharmacokinetic model of the pregabalin-sildenafil interaction in rats: application of simulation to preclinical PK-PD study design.
Bender, G; Bies, R; Danhof, M; DeJongh, J; Field, M; Florian, J; Gosset, J; Marshall, S; Tan, K, 2009
)
0.35
" Noncompartmental analysis was used to estimate pharmacokinetic variables."( Pharmacokinetics of single-dose oral pregabalin administration in normal dogs.
Badgley, BL; Dewey, CW; Gleed, RD; Horne, W; Ludders, JW; Salazar, V; Schwark, W, 2009
)
0.35
" The median (range) pharmacokinetic parameters were: Area under the curve from time 0 to 36 hours = 81."( Pharmacokinetics of single-dose oral pregabalin administration in normal dogs.
Badgley, BL; Dewey, CW; Gleed, RD; Horne, W; Ludders, JW; Salazar, V; Schwark, W, 2009
)
0.35
" Pregabalin elimination half-life is approximately 6 hours and steady state is achieved within 1 to 2 days of repeated administration."( Clinical pharmacokinetics of pregabalin in healthy volunteers.
Alvey, CW; Bockbrader, HN; Boyd, RA; Busch, JA; Corrigan, BW; Haig, GM; Posvar, EL; Radulovic, LL; Randinitis, EJ; Strand, JC; Wesche, DL, 2010
)
0.36
"Pregabalin and gabapentin share a similar mechanism of action, inhibiting calcium influx and subsequent release of excitatory neurotransmitters; however, the compounds differ in their pharmacokinetic and pharmacodynamic characteristics."( A comparison of the pharmacokinetics and pharmacodynamics of pregabalin and gabapentin.
Bockbrader, HN; Burger, P; Chapel, S; Janiczek, N; Miller, R; Wesche, D, 2010
)
0.36
" The aim of this study was to develop a population pharmacokinetic model and quantify the influence of covariates on the parameters."( Population pharmacokinetics of pregabalin in healthy subjects and patients with post-herpetic neuralgia or diabetic peripheral neuropathy.
Bockbrader, HN; Matsui, S; Shoji, S; Suzuki, M; Tomono, Y, 2011
)
0.37
"This pregabalin population pharmacokinetic analysis was conducted on data from 14 clinical trials involving healthy subjects, subjects with impaired renal function and patients with post-herpetic neuralgia or diabetic peripheral neuropathy (n= 616)."( Population pharmacokinetics of pregabalin in healthy subjects and patients with post-herpetic neuralgia or diabetic peripheral neuropathy.
Bockbrader, HN; Matsui, S; Shoji, S; Suzuki, M; Tomono, Y, 2011
)
0.37
" To evaluate if pregabalin coadministration affects pharmacokinetics of other antiepileptic drugs, population pharmacokinetic analyses using NONMEM software were performed on data from three epilepsy trials involving seven antiepileptic drugs with pregabalin as add-on therapy."( Pregabalin effect on steady-state pharmacokinetics of carbamazepine, lamotrigine, phenobarbital, phenytoin, topiramate, valproate, and tiagabine.
Bockbrader, HN; Burger, P; Knapp, L, 2011
)
0.37
" Two different gabapentin to pregabalin transition designs were simulated based on their respective population pharmacokinetic profiles."( Gabapentin to pregabalin therapy transition: a pharmacokinetic simulation.
Bockbrader, HN; Budhwani, MN; Wesche, DL, 2013
)
0.39
"Pregabalin , the S-enantiomer of 3-aminomethyl-5-methylhaxanoic acid, is a second-generation antiepileptic drug (AED) developed after gabapentin with improved pharmacokinetic and pharmacodynamics properties."( Pharmacokinetic and pharmacodynamic profile of pregabalin and its role in the treatment of epilepsy.
Schulze-Bonhage, A, 2013
)
0.39
" The article also looks at its clinical application as a combination therapy with particular respect to its pharmacokinetic profile."( Pharmacokinetic and pharmacodynamic profile of pregabalin and its role in the treatment of epilepsy.
Schulze-Bonhage, A, 2013
)
0.39
"This review aims to analyze pharmacokinetic profile, plasma level variations so as the metabolism, interactions and possible relation to clinical effect of several drugs which are used primarily as anxiolytics."( Understanding the pharmacokinetics of anxiolytic drugs.
Altamura, AC; Bareggi, S; Maffini, M; Mauri, MC; Moliterno, D; Paletta, S, 2013
)
0.39
"There is a need for a more balanced assessment of the benefits and risks associated with benzodiazepine use, particularly considering pharmacokinetic profile of the drugs to ensure that patients, who would truly benefit from these agents, are not denied appropriate treatment."( Understanding the pharmacokinetics of anxiolytic drugs.
Altamura, AC; Bareggi, S; Maffini, M; Mauri, MC; Moliterno, D; Paletta, S, 2013
)
0.39
" Pharmacokinetic variables were estimated by means of noncompartmental analysis."( Pharmacokinetics of single-dose intragastric and intravenous pregabalin administration in clinically normal horses.
Divers, TJ; Mullen, KR; Schwark, W, 2013
)
0.39
"The pharmacokinetic properties of the immediate-release (IR) and the recently developed controlled-release (CR) formulation of pregabalin are dose proportional."( Pharmacokinetics of pregabalin controlled-release in healthy volunteers: effect of food in five single-dose, randomized, clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
" The objectives of this analysis were: (1) to evaluate the effect of administration time and fat or caloric content of an accompanying meal on the pharmacokinetic properties of a single dose of pregabalin CR (330 mg) relative to a single dose of pregabalin IR (300 mg); (2) to evaluate the pharmacokinetic properties of a single dose of pregabalin CR administered fasted relative to a single dose of pregabalin CR administered immediately after food; and (3) to determine the safety and tolerability of single-dose administration of pregabalin CR and IR with and without food."( Pharmacokinetics of pregabalin controlled-release in healthy volunteers: effect of food in five single-dose, randomized, clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
"The effect of food on the pharmacokinetic properties of pregabalin CR was determined in five phase I, open-label, single-dose, crossover studies (24-28 participants/study)."( Pharmacokinetics of pregabalin controlled-release in healthy volunteers: effect of food in five single-dose, randomized, clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
"Time of day of administration and the fat and caloric content of the accompanying meal had minimal overall effect on the pharmacokinetic properties and bioavailability of the pregabalin CR formulation."( Pharmacokinetics of pregabalin controlled-release in healthy volunteers: effect of food in five single-dose, randomized, clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
"The pharmacokinetic properties of pregabalin CR were determined in four phase I, open-label, multiple-dose crossover studies (18-24 participants/study)."( Pregabalin controlled-release pharmacokinetics in healthy volunteers: analysis of four multiple-dose randomized clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
" Pregabalin CR pharmacokinetic parameters were dose proportional following administration of 82."( Pregabalin controlled-release pharmacokinetics in healthy volunteers: analysis of four multiple-dose randomized clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
" Pharmacokinetic parameters were estimated from concentration-time data using standard noncompartmental methods."( Effect of the gastrointestinal prokinetic agent erythromycin on the pharmacokinetics of pregabalin controlled-release in healthy individuals: a phase I, randomized crossover trial.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2015
)
0.42
" To validate the pharmacodynamic biomarkers for GABA-ergic anxiolytics, this study determined the pharmacodynamics of two anxiolytics and a nonanxiolytic control, and linked them to their anxiolytic and sedative effects, during an anxiety-challenge study day."( Pharmacodynamic response profiles of anxiolytic and sedative drugs.
Baas, J; Broeyer, F; Chen, X; Cohen, A; de Kam, M; van Gerven, J, 2017
)
0.46
" Thus, the potential influence of anxiety on CNS pharmacodynamic markers could be examined."( Pharmacodynamic response profiles of anxiolytic and sedative drugs.
Baas, J; Broeyer, F; Chen, X; Cohen, A; de Kam, M; van Gerven, J, 2017
)
0.46
" Areas covered: We describe the pharmacokinetic properties of pregabalin and their implications for the treatment of GAD."( Pharmacokinetic evaluation of pregabalin for the treatment of generalized anxiety disorder.
Buoli, M; Caldiroli, A; Serati, M, 2017
)
0.46
" The method is suitable for routine pharmacokinetic analysis and therapeutic monitoring of PGB."( An Improved LC-ESI-MS/MS Method to Quantify Pregabalin in Human Plasma and Dry Plasma Spot for Therapeutic Monitoring and Pharmacokinetic Applications.
Chilkoti, DC; Dwivedi, J; Namdev, KK; Sharma, S; Verma, S, 2018
)
0.48
"Combination therapy of pregabalin and tramadol is used to treat chronic neuropathic pain; however, the pharmacokinetic (PK) interactions of these drugs has not been studied."( A pharmacokinetic drug-drug interaction study between pregabalin and tramadol in healthy volunteers.
Cho, JY; Chung, JY; Im, G; Kim, Y; Lee, JJS; Lee, S; Yoon, S, 2018
)
0.48
" In this study, the pharmacokinetic interaction between pregabalin and thioctic acid was investigated at steady state."( Lack of a Clinically Significant Pharmacokinetic Interaction Between Pregabalin and Thioctic Acid in Healthy Volunteers.
Ahn, LY; Lee, H; Lim, KS; Rhee, SJ; Yu, KS, 2018
)
0.48
" Pharmacokinetic parameters were calculated by using noncompartmental analysis methods."( Lack of a Clinically Significant Pharmacokinetic Interaction Between Pregabalin and Thioctic Acid in Healthy Volunteers.
Ahn, LY; Lee, H; Lim, KS; Rhee, SJ; Yu, KS, 2018
)
0.48
"The aim of this study was to evaluate the dose-proportional pharmacokinetic characteristics of pregabalin following the administration of GLA5PR GLARS-NF1 tablets (150, 300, 450, and 600 mg) in the fed state."( Dose-proportional pharmacokinetic properties of GLA5PR GLARS-NF1 controlled-release pregabalin in healthy Korean volunteers: a randomized, open, single-dose, parallel study.
Jang, K; Jeon, JY; Kim, MG; Kim, TE; Shin, KH, 2018
)
0.48
"A population pharmacokinetic (PK) model was developed to characterize the properties of pregabalin extended-release (ER) in healthy volunteers and was subsequently applied to patient data from efficacy/safety studies investigating pregabalin ER for postherpetic neuralgia, fibromyalgia, and partial-onset seizures."( Population Pharmacokinetics of Pregabalin Extended-Release in Healthy Volunteers and Patients With Postherpetic Neuralgia, Fibromyalgia, and Partial-Onset Seizures.
Bockbrader, H; Chapel, S; Chew, M; Ma, G; Marshall, S; Xie, R, 2019
)
0.51
" Serum and brain levels of antiepileptic drugs and cannabidiol were determined by using HPLC in order to ascertain any pharmacokinetic contribution to the observed behavioral effects."( Acute effect of cannabidiol on the activity of various novel antiepileptic drugs in the maximal electroshock- and 6 Hz-induced seizures in mice: Pharmacodynamic and pharmacokinetic studies.
Nieoczym, D; Socała, K; Szafarz, M; Wlaź, P; Wyska, E, 2019
)
0.51
"The physical properties of the TL tablets, including dissolution and swelling rates, were compared with those of the MM tablets and the pharmacokinetic parameters of the TL tablet were compared with those of an IR capsule in beagles and humans."( Development of a Novel Controlled-Release Tablet of Pregabalin: Formulation Variation and Pharmacokinetics in Dogs and Humans.
Choi, HG; Kim, KH; Kwon, MC; Lee, JH; Lim, SH; Park, J; Park, JS; Shim, CR; Song, WH, 2020
)
0.56
" For the pharmacokinetic study of the TL tablet, the beagles demonstrated absorption results similar to those of an IR capsule, whereas the humans demonstrated low total absorption compared with an IR capsule."( Development of a Novel Controlled-Release Tablet of Pregabalin: Formulation Variation and Pharmacokinetics in Dogs and Humans.
Choi, HG; Kim, KH; Kwon, MC; Lee, JH; Lim, SH; Park, J; Park, JS; Shim, CR; Song, WH, 2020
)
0.56
" This study used population pharmacokinetic (PK) and exposure-response (E-R) analyses from pooled pregabalin concentration and efficacy data to compare pregabalin exposure and E-R relationships in pediatric and adult patients with FOS, to support pediatric dosage recommendations."( Pregabalin Population Pharmacokinetic and Exposure-Response Analyses for Focal Onset Seizures in Children (4-16 years) and Adults, to Support Dose Recommendations in Children.
Chan, PLS; Liu, J; Marshall, SF; McFadyen, L, 2021
)
0.62
" Pharmacokinetic analysis of pregabalin or combination (pregabalin + amitriptyline or pregabalin + duloxetine) in the plasma were performed by ultraperformance liquid chromatography tandem mass spectrometry."( Investigation of the Combination of Pregabalin with Duloxetine or Amitriptyline on the Pharmacokinetics and Antiallodynic Effect During Neuropathic Pain in Rats.
Barros, CM; Boralli, VB; Costa, LH; Galdino, G; Kawano, T; Placido, RV; Podesta, MHMC; Rodrigues, RF; Santos, RS, 2021
)
0.62
"The pharmacokinetic disposition of pregabalin was changed in the association with amitriptyline, presenting a clearance reduction and consequently an increase in bioavailability."( Investigation of the Combination of Pregabalin with Duloxetine or Amitriptyline on the Pharmacokinetics and Antiallodynic Effect During Neuropathic Pain in Rats.
Barros, CM; Boralli, VB; Costa, LH; Galdino, G; Kawano, T; Placido, RV; Podesta, MHMC; Rodrigues, RF; Santos, RS, 2021
)
0.62
" This study aimed to compare the pharmacokinetics of pregabalin SR and immediate-release (IR) formulations after multiple oral doses and to assess the effect of food on the pharmacokinetic profile of the pregabalin SR formulation after a single dose in healthy individuals."( Pharmacokinetics of a New, Once-Daily, Sustained-release Pregabalin Tablet in Healthy Male Volunteers.
An, T; Jang, SB; Jeon, JY; Kim, MG; Kim, S; Lee, SY; Lim, Y; Moon, SJ; Na, WS, 2021
)
0.62
"Two clinical trials were conducted: a randomized, open-label, multiple-dose, 2-treatment, 2-period crossover study to evaluate the steady-state pharmacokinetic properties of SR treatment (pregabalin SR 300 mg once daily for 3 days) and IR treatment (pregabalin IR 150 mg twice daily for 3 days) under fed conditions and a randomized, open-label, single-dose, 2-treatment, 2-period, crossover study to evaluate the effect of food intake on the pharmacokinetic properties of the pregabalin SR formulation."( Pharmacokinetics of a New, Once-Daily, Sustained-release Pregabalin Tablet in Healthy Male Volunteers.
An, T; Jang, SB; Jeon, JY; Kim, MG; Kim, S; Lee, SY; Lim, Y; Moon, SJ; Na, WS, 2021
)
0.62
"Thirty-one individuals in the bioequivalence study and 23 in the food effect study completed the pharmacokinetic sampling."( Pharmacokinetics of a New, Once-Daily, Sustained-release Pregabalin Tablet in Healthy Male Volunteers.
An, T; Jang, SB; Jeon, JY; Kim, MG; Kim, S; Lee, SY; Lim, Y; Moon, SJ; Na, WS, 2021
)
0.62
" To design optimized PGB regimens for pediatric patients with varying degrees of RI and predict exposure to PGB, physiologically based pharmacokinetic (PBPK) models of PGB were developed and verified, and its disposition was simulated in the healthy population and adults with RI."( Development of Physiologically Based Pharmacokinetic Model for Pregabalin to Predict the Pharmacokinetics in Pediatric Patients with Renal Impairment and Adjust Dosage Regimens: PBPK Model of Pregabalin in Pediatric Patients with Renal Impairment.
Chen, J; Guo, G; Huang, P; Ke, C; Lin, C; Wu, W; Ye, L; You, X, 2022
)
0.72

Compound-Compound Interactions

The preemptive analgesia regimen of pregabalin combined with celecoxib had positive effects on improving acute pain. The frequency and financial impact of potential drug-drug interactions (DDIs) and drug-condition interactions (DCIs) in patients with painful diabetic peripheral neuropath.

ExcerptReferenceRelevance
" Patients received PGB, 600 mg/day (200 mg q8h) for 7 days, in combination with their individualized maintenance monotherapy with valproate (VPA), phenytoin (PHT), lamotrigine (LTG), or carbamazepine (CBZ)."( Pregabalin drug interaction studies: lack of effect on the pharmacokinetics of carbamazepine, phenytoin, lamotrigine, and valproate in patients with partial epilepsy.
Alvey, CW; Bockbrader, HN; Brodie, MJ; Bron, NJ; Gibson, GL; Hounslow, NJ; Posvar, EL; Randinitis, EJ; Wesche, DL; Wilson, EA, 2005
)
0.33
" PGB may be added to VPA, LTG, PHT, or CBZ therapy without concern for pharmacokinetic drug-drug interactions."( Pregabalin drug interaction studies: lack of effect on the pharmacokinetics of carbamazepine, phenytoin, lamotrigine, and valproate in patients with partial epilepsy.
Alvey, CW; Bockbrader, HN; Brodie, MJ; Bron, NJ; Gibson, GL; Hounslow, NJ; Posvar, EL; Randinitis, EJ; Wesche, DL; Wilson, EA, 2005
)
0.33
" We investigated the analgesic effect of pregabalin and dexamethasone in combination with paracetamol after abdominal hysterectomy."( Pregabalin and dexamethasone in combination with paracetamol for postoperative pain control after abdominal hysterectomy. A randomized clinical trial.
Dahl, JB; Dierking, G; Fomsgaard, JS; Hilsted, KL; Lech, K; Lose, G; Mathiesen, O; Rasmussen, ML, 2009
)
0.35
"To assess the efficacy and safety of pregabalin alone or in combination with tolterodine extended release (ER) in subjects with idiopathic OAB."( Investigation of the clinical efficacy and safety of pregabalin alone or combined with tolterodine in female subjects with idiopathic overactive bladder.
Cossons, NH; Darekar, A; Marencak, J; Mills, IW, 2011
)
0.37
" Using a double-blind, randomized, crossover design, 16 healthy volunteers were administered (in separate sessions) capsules containing placebo, 75 mg pregabalin, 150 mg pregabalin, 10 mg oxycodone, and 75 mg pregabalin combined with 10 mg oxycodone."( Subjective, psychomotor, and physiological effects of pregabalin alone and in combination with oxycodone in healthy volunteers.
Coalson, DW; Paice, JA; Zacny, JP, 2012
)
0.38
" Below we describe the preliminary evaluation of support vector machine in the regression mode (SVR) application for the prediction of maximal antiallodynic effect of a new derivative of dihydrofuran-2-one (LPP1) used in combination with pregabalin (PGB) in the streptozocin-induced neuropathic pain model in mice."( The application of support vector regression for prediction of the antiallodynic effect of drug combinations in the mouse model of streptozocin-induced diabetic neuropathy.
Sałat, K; Sałat, R, 2013
)
0.39
"25), although this enhancement was not observed when morphine was combined with 17 mg/kg pregabalin."( Assessment of the antinociceptive effects of pregabalin alone or in combination with morphine during acetic acid-induced writhing in mice.
Keyhanfar, F; Shamsi Meymandi, M, 2013
)
0.39
"The frequency and financial impact of potential drug-drug interactions (DDIs) and drug-condition interactions (DCIs) in patients with painful diabetic peripheral neuropathy (DPN) treated with either pregabalin or duloxetine were compared."( Cost comparison of drug-drug and drug-condition interactions in patients with painful diabetic peripheral neuropathy treated with pregabalin versus duloxetine.
Cappelleri, JC; Chu, BC; Johnson, BH; Johnston, SS; Shrady, G; Silverman, SL; Udall, M, 2013
)
0.39
"Potential DDI measured using clinical software that identifies co-prescription of medications that potentially interact with pregabalin or duloxetine."( Potential drug-drug and drug-condition interactions among fibromyalgia patients initiating pregabalin or duloxetine: prevalence and health care expenditure impact.
Cappelleri, JC; Chu, BC; Johnson, BH; Johnston, SS; Shrady, G; Silverman, SL; Udall, M, 2014
)
0.4
" The objective of the present study was to evaluate the efficacy and safety of OROS® hydromorphone combined with pregabalin in patients with chronic non-cancer neuropathic pain."( Long-term efficacy of OROS® hydromorphone combined with pregabalin for chronic non-cancer neuropathic pain.
Casali, M; Dauri, M; Lazzari, M; Sabato, AF; Sabato, E; Tufaro, G, 2014
)
0.4
"To evaluate the analgesic effect of pregabalin combined with intrathecal sufentanil infusion for the treatment of breakthrough pain in patients with bone metastases."( [Pregabalin combined with intrathecal sufentanil infusion for breakthrough pain in patients with bone metastases].
Cao, Q; Gu, S; Huang, D; Wu, L; Xu, H, 2014
)
0.4
"A total of 60 breakthrough pain patients with bone metastases were randomly divided to 3 groups: group A (pregabalin combined with intrathecal sufentanil infusion group, n=20), group B (placebo combined with intrathecal sufentanil infusion group, n=20) and group C (oral morphine sulfate controlled-release tablet group, n=20)."( [Pregabalin combined with intrathecal sufentanil infusion for breakthrough pain in patients with bone metastases].
Cao, Q; Gu, S; Huang, D; Wu, L; Xu, H, 2014
)
0.4
"Pregabalin combined with intrathecal sufentanil infusion can effectively relieve breakthrough pain in patients with bone metastases."( [Pregabalin combined with intrathecal sufentanil infusion for breakthrough pain in patients with bone metastases].
Cao, Q; Gu, S; Huang, D; Wu, L; Xu, H, 2014
)
0.4
"We sought to compare a group (Group L) (n=21) of patients that underwent total knee arthroplasty and received a single preoperative dose of pregabalin combined with a COX-2 inhibitor with a control group (Group C) (n=20) that only received a COX-2 inhibitor in terms of (1) acute postoperative pain intensity, (2) analgesic consumption, and (3) functional recovery."( The effect of a single dose of preemptive pregabalin administered with COX-2 inhibitor: a trial in total knee arthroplasty.
Choi, CH; Chung, KS; Lee, JK, 2015
)
0.42
"This paper aimed to discuss the curative effect and safety of curing intercostal neuralgia through paravertebral nerve block combined with pregabalin."( Curative effect research on curing intercostal neuralgia through paravertebral nerve block combined with pregabalin.
Wu, X; Xiao, P; Zhu, X, 2014
)
0.4
"Anticipating and controlling drug-drug interactions (DDIs) in older patients with painful diabetic peripheral neuropaty (pDPN) presents a significant challenge to providers."( A retrospective, matched cohort study of potential drug-drug interaction prevalence and opioid utilization in a diabetic peripheral neuropathy population initiated on pregabalin or duloxetine.
Cappelleri, JC; Ellis, JJ; Mudumby, P; Ndehi, L; Parsons, B; Sadosky, AB; Suehs, BT; Ten Eyck, LL, 2015
)
0.42
" However, sitagliptin was observed to have no effect when administered alone or in combination with the other three drugs."( Drug combinations in diabetic neuropathic pain: an experimental validation.
Mehta, AK; Tripathi, CD; Yadav, AM, 2016
)
0.43
" In the drug combination studies, intrathecal coadministration of BRL52537 with pregabalin or A804598 exhibited synergistic interactions, and other drugs combinations showed additivity."( Isobolographic Analysis of Drug Combinations With Intrathecal BRL52537 (κ-Opioid Agonist), Pregabalin (Calcium Channel Modulator), AF 353 (P2X3 Receptor Antagonist), and A804598 (P2X7 Receptor Antagonist) in Neuropathic Rats.
Han, JH; Jung, YH; Kim, YC; Kim, YO; Yoon, MH, 2017
)
0.46
"The study did not provide any evidence of clinical efficacy for AZD5213 when combined with pregabalin in the treatment of painful diabetic neuropathy."( A 3-way Cross-over Study of Pregabalin, Placebo, and the Histamine 3 Receptor Inverse Agonist AZD5213 in Combination With Pregabalin in Patients With Painful Diabetic Neuropathy and Good Pain-reporting Ability.
Alexander, RC; Katz, N; Raudibaugh, K; Spierings, ELH, 2021
)
0.62
"The purpose of the present study (a randomized clinical trial) was to evaluate the preemptive analgesic effects of pregabalin combined with celecoxib in total knee arthroplasty (TKA)."( Positive Preemptive Analgesia Effectiveness of Pregabalin Combined with Celecoxib in Total Knee Arthroplasty: A Prospective Controlled Randomized Study.
Ding, C; Liu, X; Xiang, B; Yan, L; Zhou, Y, 2023
)
0.91
"The preemptive analgesia regimen of pregabalin combined with celecoxib had positive effects on improving acute pain and reducing the cumulative dose of opioids after TKA."( Positive Preemptive Analgesia Effectiveness of Pregabalin Combined with Celecoxib in Total Knee Arthroplasty: A Prospective Controlled Randomized Study.
Ding, C; Liu, X; Xiang, B; Yan, L; Zhou, Y, 2023
)
0.91
"This is a protocol for a randomized double-blind controlled trial to evaluate the effect of esketamine combined with pregabalin on postsurgical pain in spinal surgery."( Esketamine combined with pregabalin on acute postoperative pain in patients undergoing resection of spinal neoplasms: study protocol for a randomized controlled trial.
Fan, J; Han, R; Sun, W; Wang, J; Wang, Y; Zhou, Y, 2023
)
0.91
"The aim of this study was to evaluate the effect of esketamine combined with pregabalin on acute postsurgical pain in patients undergoing resection of spinal neoplasms."( Esketamine combined with pregabalin on acute postoperative pain in patients undergoing resection of spinal neoplasms: study protocol for a randomized controlled trial.
Fan, J; Han, R; Sun, W; Wang, J; Wang, Y; Zhou, Y, 2023
)
0.91
"Pulsed radiofrequency (PRF), as a new technique, is used to treat a variety of chronic pain syndromes, but it has a high recurrence rate for herpetic neuralgia and is often combined with drugs therapy."( Efficacy and safety of pulsed radiofrequency combined with pregabalin for herpetic neuralgia: A systematic review and meta-analysis.
Chen, J; Lan, L; Wang, W; Xu, X, 2023
)
0.91
" PRF combined with pregabalin significantly reduced the visual analogue scale/score in patients with postherpetic neuralgia or herpes zoster neuralgia when compared with pregabalin or PRF monotherapy [P < ."( Efficacy and safety of pulsed radiofrequency combined with pregabalin for herpetic neuralgia: A systematic review and meta-analysis.
Chen, J; Lan, L; Wang, W; Xu, X, 2023
)
0.91
"PRF combined with pregabalin can effectively alleviate the pain intensity and improve sleep quality in patients with herpetic neuralgia, and the incidence of complications was low, so it was worthy of clinical application."( Efficacy and safety of pulsed radiofrequency combined with pregabalin for herpetic neuralgia: A systematic review and meta-analysis.
Chen, J; Lan, L; Wang, W; Xu, X, 2023
)
0.91
" To analyze the effectiveness of extracorporeal shock wave (ESW) combined with pregabalin on PHN and its impact on PHN patients' quality of life with the help of a random number table."( Effect of extracorporeal shock wave combined with pregabalin on patients with post-herpetic neuralgia.
Sun, H; Yu, Z, 2023
)
0.91

Bioavailability

Pregabalin oral bioavailability is approximately 90% and is independent of dose and frequency of administration. The absolute bioavailability of gabapentin drops from 60% to 33% as the dosage increases from 900 to 3600 mg/day.

ExcerptReferenceRelevance
" In healthy volunteers, it is rapidly absorbed with peak blood concentrations within 1 h and it has a bioavailability of approximately 90%."( Pregabalin: a new anxiolytic.
Lauria-Horner, BA; Pohl, RB, 2003
)
0.32
" Peak plasma levels occur approximately 1 hour after oral doses and oral bioavailability is about 90%."( Pregabalin: a new agent for the treatment of neuropathic pain.
Zareba, G, 2005
)
0.33
" Unlike gabapentin, pregabalin was well absorbed (> 90%), and its absorption was dose independent."( Pregabalin in neuropathic pain: a more "pharmaceutically elegant" gabapentin?
Guay, DR, 2005
)
0.33
" Pregabalin oral bioavailability is approximately 90% and is independent of dose and frequency of administration."( Clinical pharmacokinetics of pregabalin in healthy volunteers.
Alvey, CW; Bockbrader, HN; Boyd, RA; Busch, JA; Corrigan, BW; Haig, GM; Posvar, EL; Radulovic, LL; Randinitis, EJ; Strand, JC; Wesche, DL, 2010
)
0.36
" The absolute bioavailability of gabapentin drops from 60% to 33% as the dosage increases from 900 to 3600 mg/day, while the absolute bioavailability of pregabalin remains at > or = 90% irrespective of the dosage."( A comparison of the pharmacokinetics and pharmacodynamics of pregabalin and gabapentin.
Bockbrader, HN; Burger, P; Chapel, S; Janiczek, N; Miller, R; Wesche, D, 2010
)
0.36
" Our study investigated whether a single 300-mg dose of pregabalin in patients has sufficient central nervous system bioavailability to be useful under acute conditions where brain or spinal cord excitability may lead to long-term disease, such as chronic pain."( Can a single dose of 300 mg of pregabalin reach acute antihyperalgesic levels in the central nervous system?
Buvanendran, A; Kari, M; Kroin, JS; Tuman, KJ,
)
0.13
"This pharmacostatistical model showed that: (1) pregabalin oral clearance (CL/F) was directly proportional to creatinine clearance (CLcr), but was independent of gender, race, age, female hormonal status, daily dose, and dosing regimen; (2) apparent volume of distribution was dependent on body weight and gender; (3) absorption rate was decreased when given with food; and (4) coadministration with marketed antiepileptic drugs (AEDs) had no significant effect on pregabalin CL/F."( Population pharmacokinetics of pregabalin in healthy subjects and patients with chronic pain or partial seizures.
Bockbrader, HN; Burger, P; Corrigan, BW; Knapp, L, 2011
)
0.37
" Pregabalin is well absorbed in patients with chronic pancreatitis, and the pharmacokinetic profile of pregabalin is not extensively affected by chronic pancreatitis."( The absorption profile of pregabalin in chronic pancreatitis.
Andresen, T; Dahan, A; Drewes, AM; Olesen, AE; Olesen, SS; Olofsen, E; Staahl, C, 2012
)
0.38
" Pregabalin has a linear uptake without transporter saturation at therapeutic dosages, high bioavailability with rapid absorption independent of food intake."( Pharmacokinetic and pharmacodynamic profile of pregabalin and its role in the treatment of epilepsy.
Schulze-Bonhage, A, 2013
)
0.39
"To determine the oral bioavailability of a pregabalin capsule relative to a pregabalin solution."( Bioequivalence assessment of a pregabalin capsule and oral solution in fasted healthy volunteers: a randomized, crossover study.
Alvey, CW; Bockbrader, HN; Corrigan, BW; Radulovic, LL, 2013
)
0.39
" Bioavailability was 97."( Pharmacokinetics of single-dose intragastric and intravenous pregabalin administration in clinically normal horses.
Divers, TJ; Mullen, KR; Schwark, W, 2013
)
0.39
" Overall, pregabalin is characterized by higher potency, quicker absorption rates and greater bioavailability levels than gabapentin."( Misuse and abuse of pregabalin and gabapentin: cause for concern?
Schifano, F, 2014
)
0.4
" Bioequivalence criteria for comparison of pregabalin CR after a low- or medium-calorie breakfast relative to pregabalin IR were not met; however, bioavailability of the pregabalin CR vs."( Pharmacokinetics of pregabalin controlled-release in healthy volunteers: effect of food in five single-dose, randomized, clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
"Time of day of administration and the fat and caloric content of the accompanying meal had minimal overall effect on the pharmacokinetic properties and bioavailability of the pregabalin CR formulation."( Pharmacokinetics of pregabalin controlled-release in healthy volunteers: effect of food in five single-dose, randomized, clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
" Relative bioavailability of pregabalin CR was 93-97 % of pregabalin IR, and bioequivalence criteria with respect to the 24-h steady-state exposure (area under the plasma concentration-time curve from 0 to 24 h [AUC24]) were met."( Pregabalin controlled-release pharmacokinetics in healthy volunteers: analysis of four multiple-dose randomized clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
" Compared with conventional capsules, the relative bioavailability of gastro-floating tablet in fasted conditions or in fed conditions was only 62."( Design and optimization of gastro-floating sustained-release tablet of pregabalin: In vitro and in vivo evaluation.
Dong, Y; Han, X; He, W; Qin, C; Shi, W; Wang, X; Wu, M; Xu, S; Yang, L; Yin, L, 2018
)
0.48
"The ATP-binding cassette transporter P-glycoprotein (P-gp) is known to limit both brain penetration and oral bioavailability of many chemotherapy drugs."( A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
Ambudkar, SV; Brimacombe, KR; Chen, L; Gottesman, MM; Guha, R; Hall, MD; Klumpp-Thomas, C; Lee, OW; Lee, TD; Lusvarghi, S; Robey, RW; Shen, M; Tebase, BG, 2019
)
0.51
"The data demonstrated that combined therapy of pregabalin plus amitriptyline improved the bioavailability of pregabalin and potentiated the efficacy of the antiallodynic effect of pregabalin alone, proving to be advantageous for the treatment of sciatic neuropathic pain."( Investigation of the Combination of Pregabalin with Duloxetine or Amitriptyline on the Pharmacokinetics and Antiallodynic Effect During Neuropathic Pain in Rats.
Barros, CM; Boralli, VB; Costa, LH; Galdino, G; Kawano, T; Placido, RV; Podesta, MHMC; Rodrigues, RF; Santos, RS, 2021
)
0.62
"The bioavailability of the pregabalin SR 300 mg formulation is increased if taken with a high-fat meal."( Pharmacokinetics of a New, Once-Daily, Sustained-release Pregabalin Tablet in Healthy Male Volunteers.
An, T; Jang, SB; Jeon, JY; Kim, MG; Kim, S; Lee, SY; Lim, Y; Moon, SJ; Na, WS, 2021
)
0.62
" Given its faster onset, increased bioavailability and potency, and nonsaturable absorption, pregabalin's pharmacokinetics theoretically enhance its misuse liability versus gabapentin."( Gabapentinoid Pharmacology in the Context of Emerging Misuse Liability.
Covvey, JR; Evoy, KE; Peckham, AM; Tidgewell, KJ, 2021
)
0.62

Dosage Studied

Pregabalin was associated with an inhibitory effect on heart rate fluctuations and reduced hemodynamic complications after intubation. Cosmetic side effects leading to dosage change or discontinuation occurred most frequently with pregabalin and valproic acid compared with all other AEDs.

ExcerptRelevanceReference
" Results form the basis of recommended pregabalin dosing regimens in patients with decreased renal function."( Pharmacokinetics of pregabalin in subjects with various degrees of renal function.
Alvey, CW; Bockbrader, HN; Cook, JA; Posvar, EL; Randinitis, EJ; Sedman, AJ, 2003
)
0.32
" Given the maximal dosage studied, pregabalin had acceptable tolerability compared to placebo despite a greater incidence of side effects, which were generally mild to moderate in intensity."( Pregabalin for the treatment of postherpetic neuralgia: a randomized, placebo-controlled trial.
Bockbrader, H; Corbin, AE; Dworkin, RH; Garofalo, EA; LaMoreaux, L; Poole, RM; Sharma, U; Young, JP, 2003
)
0.32
"To establish the efficacy, safety, and tolerability of pregabalin administered twice-daily (BID) without dose titration as adjunctive treatment in patients with partial seizures and to confirm the dose-response relationship."( Dose-response trial of pregabalin adjunctive therapy in patients with partial seizures.
French, JA; Garofalo, EA; Knapp, LE; Kugler, AR; Robbins, JL, 2003
)
0.32
"Our objectives were to describe the exposure-response relationship of pregabalin add-on treatment for refractory partial seizures after multiple dosing in patients and to identify the factors that influence this relationship."( Exposure-response analysis of pregabalin add-on treatment of patients with refractory partial seizures.
Bockbrader, H; Burger, P; Corrigan, B; Frame, B; Garofalo, E; Lalonde, R; Miller, R, 2003
)
0.32
"Pregabalin add-on treatment demonstrates a dose-response relationship in 3 out of 4 patients with refractory partial seizures."( Exposure-response analysis of pregabalin add-on treatment of patients with refractory partial seizures.
Bockbrader, H; Burger, P; Corrigan, B; Frame, B; Garofalo, E; Lalonde, R; Miller, R, 2003
)
0.32
" More studies are needed to determine the best dosing regimen to optimize efficacy and tolerability."( A randomized, double-blind, placebo-controlled, fixed-dose, multicenter study of pregabalin in patients with generalized anxiety disorder.
Carter, CM; Cohn, CK; Crockatt, JG; Dubovsky, SJ; Feltner, DE; Liu-Dumaw, M; Pande, AC; Shrivastava, RK; Targum, SD, 2003
)
0.32
"3 h, and dose-proportional maximal plasma concentrations and total exposures predict a dose-response relationship in clinical practice and allow an effective starting dose of 150 mg/day in clinical practice without need for titration."( Pregabalin pharmacology and its relevance to clinical practice.
Ben-Menachem, E, 2004
)
0.32
" Pregabalin, at 150, 300, and 600 mg/day, was significantly superior to placebo in reducing seizure frequency with a clear dose-response relationship."( Pregabalin as adjunctive therapy for partial seizures.
Brodie, MJ, 2004
)
0.32
"01) difference when the highest dosage of the drug was administered."( Oral treatment with PD-0200347, an alpha2delta ligand, reduces the development of experimental osteoarthritis by inhibiting metalloproteinases and inducible nitric oxide synthase gene expression and synthesis in cartilage chondrocytes.
Boileau, C; Boily, M; Brunet, J; El-Kattan, A; Flory, C; Martel-Pelletier, J; Pelletier, JP; Schrier, D; Tardif, G, 2005
)
0.33
" The current study evaluated the anxiolytic efficacy of BID versus TID dosing of pregabalin in patients with generalized anxiety disorder."( Efficacy of pregabalin in the treatment of generalized anxiety disorder: double-blind, placebo-controlled comparison of BID versus TID dosing.
Feltner, DE; Fieve, RR; Pande, AC; Pohl, RB, 2005
)
0.33
" Pregabalin dosing aimed at optimal balance of efficacy and tolerability provides significant pain relief and may reduce risks for AEs and therapy discontinuation."( Efficacy of pregabalin in neuropathic pain evaluated in a 12-week, randomised, double-blind, multicentre, placebo-controlled trial of flexible- and fixed-dose regimens.
Balkenohl, M; Freynhagen, R; Griesing, T; Strojek, K; Whalen, E, 2005
)
0.33
" Results of these studies showed efficacy at doses of 150 mg per day, and a dose-response relationship up to doses of 600 mg per day."( [Clinical experiences with pregabalin in the treatment of focal epilepsies].
Gil-Nagel Rein, A; Gómez-Alonso, J,
)
0.13
" Responder rates across the effective doses (150-600 mg/day) ranged from 14% to 51% and demonstrated a significant dose-response relationship."( Defining success in clinical trials--profiling pregabalin, the newest AED.
Ryvlin, P, 2005
)
0.33
" Dosage could be adjusted based on tolerability and maintained when a 4-week seizure-free period was achieved."( Pregabalin add-on treatment in patients with partial seizures: a novel evaluation of flexible-dose and fixed-dose treatment in a double-blind, placebo-controlled study.
Anhut, H; Barrett, JA; Brodie, MJ; Elger, CE; Lee, CM, 2005
)
0.33
" Lower incidence of adverse events and discontinuations were achieved in patients receiving pregabalin when dosing was individualized to optimize efficacy and tolerability."( Pregabalin add-on treatment in patients with partial seizures: a novel evaluation of flexible-dose and fixed-dose treatment in a double-blind, placebo-controlled study.
Anhut, H; Barrett, JA; Brodie, MJ; Elger, CE; Lee, CM, 2005
)
0.33
"This trial evaluated the efficacy and safety of pregabalin dosed twice daily (BID) for relief of neuro-pathic pain associated with postherpetic neuralgia (PHN)."( Efficacy and tolerability of twice-daily pregabalin for treating pain and related sleep interference in postherpetic neuralgia: a 13-week, randomized trial.
Feister, HA; Rigaudy, L; Stoker, M; van Seventer, R; Versavel, M; Young, JP, 2006
)
0.33
"Pregabalin, dosed BID, reduced neuropathic pain associated with PHN and was well tolerated."( Efficacy and tolerability of twice-daily pregabalin for treating pain and related sleep interference in postherpetic neuralgia: a 13-week, randomized trial.
Feister, HA; Rigaudy, L; Stoker, M; van Seventer, R; Versavel, M; Young, JP, 2006
)
0.33
" The improved pharmacokinetic profile of pregabalin relative to gabapentin is manifested in linear and dose-independent absorption and a narrow therapeutic dosing range."( Pregabalin in neuropathic pain: a more "pharmaceutically elegant" gabapentin?
Guay, DR, 2005
)
0.33
" Pregabalin in both dosage treatment groups (400 mg/day, p < ."( Efficacy and safety of pregabalin in the treatment of generalized anxiety disorder: a 6-week, multicenter, randomized, double-blind, placebo-controlled comparison of pregabalin and venlafaxine.
Kasper, S; Montgomery, SA; Pande, AC; Tobias, K; Zornberg, GL, 2006
)
0.33
" Additionally, pregabalin (initial dosage 450 mg/day) was effective for the prevention of relapse of GAD over 34 weeks."( Pregabalin: in the treatment of generalised anxiety disorder.
Foster, RH; Frampton, JE, 2006
)
0.33
" For these older drugs it has been common practice to adjust the dosage to achieve a serum drug concentration within a predefined 'therapeutic range', representing an interval where most patients are expected to show an optimal response."( Pharmacokinetic variability of newer antiepileptic drugs: when is monitoring needed?
Johannessen, SI; Tomson, T, 2006
)
0.33
" Pregabalin was administered either intraperitoneally (IP) or intrathecally (IT) and dosed up incrementally until an antiallodynic effect without sedation or motor impairment was apparent."( Antiallodynic effect of pregabalin in rat models of sympathetically maintained and sympathetic independent neuropathic pain.
Han, DW; Kweon, TD; Lee, JS; Lee, YW, 2007
)
0.34
"The pharmacology, pharmacokinetics, clinical efficacy, adverse effects, and dosage and administration of pregabalin are reviewed."( Pregabalin: an antiepileptic agent useful for neuropathic pain.
Blommel, AL; Blommel, ML, 2007
)
0.34
" The starting dosage for patients with neuropathic pain associated with diabetic peripheral neuropathy is 50 mg three times daily and may be increased to 300 mg daily within one week based on efficacy and tolerability."( Pregabalin: an antiepileptic agent useful for neuropathic pain.
Blommel, AL; Blommel, ML, 2007
)
0.34
" Four of the available six placebo-controlled trials were found acceptable for a pooled analysis of dose-response relationship."( Dose-response relationship of pregabalin in patients with generalized anxiety disorder. A pooled analysis of four placebo-controlled trials.
Bech, P, 2007
)
0.34
" In addition to reassurance, pregabalin was prescribed for these myotonic symptoms at a dosage of 50 mg by mouth three times daily."( Successful amelioration of oxaliplatin-induced hyperexcitability syndrome with the antiepileptic pregabalin in a patient with pancreatic cancer.
Hashmi, S; Saif, MW, 2008
)
0.35
" A flexible dosing approach appears appropriate to ensure patient compliance and treatment success."( Efficacy and safety of pregabalin in treatment refractory patients with various neuropathic pain entities in clinical routine.
Freynhagen, R; Grond, S; Hagebeuker, A; Junker, U; Konrad, C; Schmelz, M; Schüpfer, G; Von Giesen, HJ; Wagner, KJ; Ziegler, D, 2007
)
0.34
"Both gabapentin and pregabalin are approved for the management of postherpetic neuralgia (PHN), although dosing and pharmacokinetic differences between these medications may affect their use in actual practice."( A retrospective evaluation of the use of gabapentin and pregabalin in patients with postherpetic neuralgia in usual-care settings.
Gore, M; Sadosky, A; Stacey, B; Tai, KS, 2007
)
0.34
" However, patients on the same PGB dosage per body weight had rather different PGB trough concentrations, which could be explained only in part by age and comedication."( Serum concentrations of pregabalin in patients with epilepsy: the influence of dose, age, and comedication.
Jürgens, U; May, TW; Neb, R; Rambeck, B, 2007
)
0.34
" The most frequently used dosing regimen involved a starting dose of 150mg/d and dose escalation to 300mg/d after one week (mean: 301mg/d, administered in two doses)."( Efficacy and safety of pregabalin in patients with diabetic peripheral neuropathy or postherpetic neuralgia: Open-label, non-comparative, flexible-dose study.
Baron, R; Binder, A; Brasser, M; Brunnmüller, U; May, M, 2008
)
0.35
"To evaluate the efficacy, safety, and tolerability of pregabalin across the effective dosing range, to determine differences in the efficacy of three times daily (TID) versus twice daily (BID) dosage schedules, and to use time-to-event analysis to determine the time to onset of a sustained therapeutic effect using data from seven trials of pregabalin in painful diabetic peripheral neuropathy (DPN)."( Efficacy, safety, and tolerability of pregabalin treatment for painful diabetic peripheral neuropathy: findings from seven randomized, controlled trials across a range of doses.
Durso-Decruz, E; Emir, B; Freeman, R, 2008
)
0.35
" Only one trial included all three of these dosages, and TID dosing was used in four."( Efficacy, safety, and tolerability of pregabalin treatment for painful diabetic peripheral neuropathy: findings from seven randomized, controlled trials across a range of doses.
Durso-Decruz, E; Emir, B; Freeman, R, 2008
)
0.35
"Treatment with pregabalin across its effective dosing range is associated with significant, dose-related improvement in pain in patients with DPN."( Efficacy, safety, and tolerability of pregabalin treatment for painful diabetic peripheral neuropathy: findings from seven randomized, controlled trials across a range of doses.
Durso-Decruz, E; Emir, B; Freeman, R, 2008
)
0.35
" This was seen in the 150 mg/day, 300-450 mg/day and 600 mg/day dosing groups."( Efficacy of pregabalin in depressive symptoms associated with generalized anxiety disorder: a pooled analysis of 6 studies.
Baldinetti, F; Baldwin, DS; Mandel, F; Stein, DJ, 2008
)
0.35
" Double-blind treatment was with placebo or the patient's optimal fixed dosage of pregabalin."( Fibromyalgia relapse evaluation and efficacy for durability of meaningful relief (FREEDOM): a 6-month, double-blind, placebo-controlled trial with pregabalin.
Crofford, LJ; Haig, GM; Martin, SA; Mease, PJ; Sharma, U; Simpson, SL; Young, JP, 2008
)
0.35
" Recommendations for future research to inform clinical practice should include cost-effectiveness studies and dose-response analysis in order to determine the schema employed and the duration of treatment."( Efficacy of pregabalin and gabapentin for neuropathic pain in spinal-cord injury: an evidence-based evaluation of the literature.
Amaniti, E; Kouvelas, D; Papazisis, G; Tzellos, TG, 2008
)
0.35
"Time to onset of pain relief and improvement in allodynia in 269 patients with postherpetic neuralgia was examined in a 4-week randomized trial comparing flexibly dosed pregabalin (150-600 mg/d), fixed-dose pregabalin (300 mg/d), and placebo."( Pregabalin for postherpetic neuralgia: placebo-controlled trial of fixed and flexible dosing regimens on allodynia and time to onset of pain relief.
Barrett, JA; Phillips, KF; Rowbotham, MC; Stacey, BR; Whalen, E, 2008
)
0.35
" It is effective with two or three-times daily dosing in a dose range of 150 to 600 mg daily."( Pregabalin for neuropathic pain based on recent clinical trials.
Stacey, BR; Swift, JN, 2006
)
0.33
" We evaluated the efficacy of pregabalin 600 mg/d (300 mg dosed BID) versus placebo for relieving DPN-associated neuropathic pain, and assessed its safety using objective measures of nerve conduction (NC)."( Efficacy and safety of pregabalin 600 mg/d for treating painful diabetic peripheral neuropathy: a double-blind placebo-controlled trial.
Arezzo, JC; Lamoreaux, L; Pauer, L; Rosenstock, J, 2008
)
0.35
" After 1-weeks' dosage escalation, pregabalin-treated patients received 300 mg BID for 12 weeks."( Efficacy and safety of pregabalin 600 mg/d for treating painful diabetic peripheral neuropathy: a double-blind placebo-controlled trial.
Arezzo, JC; Lamoreaux, L; Pauer, L; Rosenstock, J, 2008
)
0.35
" The method was applied successfully to the determination of this drug in pharmaceutical dosage form."( Spectrophotometric and spectrofluorimetric methods for the determination of pregabalin in bulk and pharmaceutical preparation.
Onal, A; Sagirli, O, 2009
)
0.35
" The most commonly reported AEs were dizziness and somnolence, however, they were most pronounced during the first week of treatment, followed by a sharp fall in incidences across all dosing groups to <5% from Week 2 and onwards."( Add-on treatment with pregabalin for partial seizures with or without generalisation: pooled data analysis of four randomised placebo-controlled trials.
Baldinetti, F; Gil-Nagel, A; Leon, T; Zaccara, G, 2009
)
0.35
" Daily median dosage was 300 mg."( Pregabalin in patients with primary brain tumors and seizures: a preliminary observation.
Novy, J; Rossetti, AO; Stupp, R, 2009
)
0.35
" Nine patients meeting Diagnostic and Statistical Manual, fourth edition criteria for PTSD who were on stable doses of antidepressants were treated open label with flexibly dosed pregabalin for 6 weeks."( Pregabalin augmentation of antidepressants in patients with accident-related posttraumatic stress disorder: an open label pilot study.
Han, C; Marks, DM; Masand, PS; Pae, CU; Patkar, AA, 2009
)
0.35
" In several pregabalin dosage groups the dosage was escalated during days 1-7, whereas in others pregabalin was initiated at a fixed dosage without escalation."( Rapid onset of seizure suppression with pregabalin adjunctive treatment in patients with partial seizures.
Barrett, JA; Perucca, E; Ramsay, RE; Robbins, J; Spiegel, K, 2009
)
0.35
" At the dosing schemes most commonly used in placebo-controlled trials, significant seizure-suppressing activity was observed after only 2 days of treatment."( Rapid onset of seizure suppression with pregabalin adjunctive treatment in patients with partial seizures.
Barrett, JA; Perucca, E; Ramsay, RE; Robbins, J; Spiegel, K, 2009
)
0.35
" A dose-response effect was evident for PGB that reached a plateau at a dose of 300 mg/d."( Comparative efficacy of pregabalin and benzodiazepines in treating the psychic and somatic symptoms of generalized anxiety disorder.
Feltner, DE; Herman, B; Lydiard, RB; Rickels, K, 2010
)
0.36
"Pregabalin 4 mg kg(-1) PO produces plasma concentrations within the extrapolated therapeutic range from humans for sufficient time to suggest that a twice daily dosing regime would be adequate."( Pharmacokinetics of single-dose oral pregabalin administration in normal dogs.
Badgley, BL; Dewey, CW; Gleed, RD; Horne, W; Ludders, JW; Salazar, V; Schwark, W, 2009
)
0.35
" The initial daily dosage was 75 mg, subsequently adjusted according to the drug's efficacy and the individual patients' tolerability at 2-week intervals."( Pregabalin in the treatment of chronic migraine: an open-label study.
Calandre, EP; Garcia-Leiva, JM; Rico-Villademoros, F; Rodriguez-Lopez, CM; Vilchez, JS,
)
0.13
" Patients were then started on open-label pregabalin (75, 150, 300 and 600 mg/day) according to a forced titration dosing regimen, while continuing the same dosage of oxycodone or placebo for 4 weeks."( A randomized, controlled trial of oxycodone versus placebo in patients with postherpetic neuralgia and painful diabetic neuropathy treated with pregabalin.
Duffull, SB; Moore, BJ; Nissen, LM; O'Callaghan, JP; Smith, MT; Zin, CS, 2010
)
0.36
" A dose-response relationship was apparent for at least 50% pain relief and for adverse event outcomes."( Pregabalin in fibromyalgia: meta-analysis of efficacy and safety from company clinical trial reports.
Derry, S; McQuay, HJ; Moore, RA; Straube, S, 2010
)
0.36
" In both conditions, PGB was found efficacious with significant improvement in withdrawal symptoms at the dosage ranges of 150-450 mg/day (AD) and 225-900 mg/day (BD)."( Pregabalin in the treatment of alcohol and benzodiazepines dependence.
Konstantakopoulos, G; Oulis, P, 2010
)
0.36
"The aim of this study was to characterize the anticonvulsant effects of 1-methyl-1,2,3,4-tetrahydroisoquinoline (MeTHIQ--an endogenous parkinsonism-preventing substance) in combination with four second-generation antiepileptic drugs (AEDs: lamotrigine [LTG], oxcarbazepine [OXC], pregabalin [PGB], and topiramate [TPM]) in the mouse maximal electroshock (MES)-induced seizure model by using the type I isobolographic analysis for parallel and non-parallel dose-response relationship curves (DRRCs)."( Interactions of 1-methyl-1,2,3,4-tetrahydroisoquinoline with lamotrigine, oxcarbazepine, pregabalin, and topiramate in the mouse maximal electroshock-induced seizure model: a type I isobolographic analysis.
Antkiewicz-Michaluk, L; Czuczwar, SJ; Luszczki, JJ; Raszewski, G, 2010
)
0.36
" Pregabalin average daily dosage (SD) was 385."( Pregabalin for painful HIV neuropathy: a randomized, double-blind, placebo-controlled trial.
Clifford, DB; Durso-De Cruz, E; Emir, B; Freeman, R; Glue, P; Murphy, TK; Schifitto, G; Scott, GN; Simpson, DM; Whalen, E, 2010
)
0.36
" Pregabalin however, required a dosage adjustment in case of renal insufficiency."( [Therapeutic drug monitoring of pregabaline].
Bentué-Ferrer, D; Tribut, O; Verdier, MC,
)
0.13
" Time to achieve effective dosing is relatively quick and there is a range of dosing available."( Treatment of post-burn neuropathic pain: evaluation of pregablin.
Turner, L; Wong, L, 2010
)
0.36
"To characterize the anticonvulsant effects of pregabalin (PGB - a third-generation antiepileptic drug) in combination with carbamazepine (CBZ - a classical antiepileptic drug) in the mouse maximal electroshock (MES)-induced seizure model by using the type I isobolographic analysis for non-parallel dose-response relationship curves (DRRCs)."( Interaction of pregabalin with carbamazepine in the mouse maximal electroshock-induced seizure model: a type I isobolographic analysis for non-parallel dose-response relationship curves.
Luszczki, JJ, 2010
)
0.36
"This six-arm, double-blind, placebo-controlled, dose-response study randomized patients (N=137) with moderate-to-severe idiopathic RLS in an equal ratio to placebo or pregabalin 50, 100, 150, 300, or 450 mg/day."( A randomized, double-blind, 6-week, dose-ranging study of pregabalin in patients with restless legs syndrome.
Allen, R; Chen, C; García-Borreguero, D; Knapp, L; Miceli, J; Peterson, BT; Soaita, A; Wohlberg, C, 2010
)
0.36
" Pregabalin was safe and well tolerated across the entire dosing range."( A randomized, double-blind, 6-week, dose-ranging study of pregabalin in patients with restless legs syndrome.
Allen, R; Chen, C; García-Borreguero, D; Knapp, L; Miceli, J; Peterson, BT; Soaita, A; Wohlberg, C, 2010
)
0.36
" Dropout is an important treatment failure endpoint, which can be analyzed using time-to-event models that incorporate daily dosing or other time-varying information."( Modeling dropout from adverse event data: impact of dosing regimens across pregabalin trials in the treatment of generalized anxiety disorder.
Frame, B; Hutmacher, M; Lalovic, B; Miller, R, 2011
)
0.37
", lamotrigine [LTG], oxcarbazepine [OXC] and topiramate [TPM]) in the mouse maximal electroshock (MES)-induced seizure model by using the type I isobolographic analysis for non-parallel dose-response relationship curves (DRRCs)."( Additive interactions of pregabalin with lamotrigine, oxcarbazepine and topiramate in the mouse maximal electroshock-induced seizure model: a type I isobolographic analysis for non-parallel dose-response relationship curves.
Czuczwar, SJ; Filip, D; Luszczki, JJ, 2010
)
0.36
" The absolute bioavailability of gabapentin drops from 60% to 33% as the dosage increases from 900 to 3600 mg/day, while the absolute bioavailability of pregabalin remains at > or = 90% irrespective of the dosage."( A comparison of the pharmacokinetics and pharmacodynamics of pregabalin and gabapentin.
Bockbrader, HN; Burger, P; Chapel, S; Janiczek, N; Miller, R; Wesche, D, 2010
)
0.36
" Pregabalin dosage was increased from 150 to 600 mg/d during the first 4 weeks."( Pregabalin for the treatment of men with chronic prostatitis/chronic pelvic pain syndrome: a randomized controlled trial.
Alexander, RB; Anderson, RU; Cen, L; Chuai, S; Krieger, JN; Kusek, JW; Landis, JR; Litwin, MS; McNaughton-Collins, M; Nickel, JC; Nyberg, LM; O'Leary, M; Pontari, MA; Propert, KJ; Schaeffer, AJ; Shoskes, DA; White, PC; Zeitlin, S, 2010
)
0.36
"A simple, fast, and sensitive HPLC method was developed and validated for the evaluation of pregabalin in a pharmaceutical dosage form using fluorescamine as a derivatization agent for the first time."( Rapid high-performance liquid chromatography method for determination of pregabalin in a pharmaceutical dosage form following derivatization with fluorescamine.
Grabnar, I; Martinc, B; Mrhar, A; Vovk, T,
)
0.13
"0009), except for the lowest dosage (150 mg/day) in the youngest age group."( Evaluation of the safety and efficacy of pregabalin in older patients with neuropathic pain: results from a pooled analysis of 11 clinical studies.
Cheung, R; Emir, B; Murphy, TK; Semel, D; Zlateva, G, 2010
)
0.36
" Linear regression analysis was used to evaluate a dose-response relationship between logarithms of pregabalin doses and their resultant maximum possible antinociceptive effects (MPAE) using the hot-plate test in mice."( Dose-response relationship analysis of pregabalin doses and their antinociceptive effects in hot-plate test in mice.
Łuszczki, JJ,
)
0.13
"This pharmacostatistical model showed that: (1) pregabalin oral clearance (CL/F) was directly proportional to creatinine clearance (CLcr), but was independent of gender, race, age, female hormonal status, daily dose, and dosing regimen; (2) apparent volume of distribution was dependent on body weight and gender; (3) absorption rate was decreased when given with food; and (4) coadministration with marketed antiepileptic drugs (AEDs) had no significant effect on pregabalin CL/F."( Population pharmacokinetics of pregabalin in healthy subjects and patients with chronic pain or partial seizures.
Bockbrader, HN; Burger, P; Corrigan, BW; Knapp, L, 2011
)
0.37
" The most commonly used dosage was 450 mg/d."( [Lyrica (pregabalin) in the treatment of focal refractory epilepsy in adults].
Andreeva, OV; Iakunina, AV; Kalinin, VA; Vlasov, PN, 2010
)
0.36
" We also assessed the association between serious AEs and pregabalin, and investigated whether pregabalin AEs display a dose-response relationship."( The adverse event profile of pregabalin: a systematic review and meta-analysis of randomized controlled trials.
Gangemi, P; Perucca, P; Specchio, L; Zaccara, G, 2011
)
0.37
" We used relative risks (RRs) to assess the association of any [99% confidence intervals (CIs)] or serious AEs (95% CIs) with pregabalin, and risk differences (RDs, 95% CIs) to investigate dose-response relationships of pregabalin AEs."( The adverse event profile of pregabalin: a systematic review and meta-analysis of randomized controlled trials.
Gangemi, P; Perucca, P; Specchio, L; Zaccara, G, 2011
)
0.37
" There was a selective dose-response pattern in the onset of pregabalin AEs, with certain AEs appearing at lower doses than others."( The adverse event profile of pregabalin: a systematic review and meta-analysis of randomized controlled trials.
Gangemi, P; Perucca, P; Specchio, L; Zaccara, G, 2011
)
0.37
" Pregabalin AEs appear according to a selective dose-response pattern, possibly reflecting the severity of dysfunction of distinct anatomic structures."( The adverse event profile of pregabalin: a systematic review and meta-analysis of randomized controlled trials.
Gangemi, P; Perucca, P; Specchio, L; Zaccara, G, 2011
)
0.37
" There were no statistically significant differences found regarding sex, age or daily dosage between this latter group compared with the patients who registered for the study but did not fill in a questionnaire."( Intensive monitoring of pregabalin: results from an observational, Web-based, prospective cohort study in the Netherlands using patients as a source of information.
Härmark, L; Straus, S; van Grootheest, K; van Puijenbroek, E, 2011
)
0.37
" No comprehensive data exist regarding the optimal dosage of pregabalin on reducing postoperative pain and opioid consumption in spinal surgery."( Effective dose of peri-operative oral pregabalin as an adjunct to multimodal analgesic regimen in lumbar spinal fusion surgery.
Choi, YS; Kim, JC; Kim, KN; Kwak, YL; Lee, JY; Shim, JK, 2011
)
0.37
" A greater frequency reduction was observed in those patients who increased the dosage within the first month of therapy."( Efficacy and tolerability of pregabalin as preventive treatment for migraine: a 3-month follow-up study.
Ciuffoli, A; Pizzolato, R; Prosperini, L; Sette, G; Villani, V, 2011
)
0.37
" Trazodone, flexibly dosed (50-300 mg/day), was administered to 66 fibromyalgia patients during 12 weeks; 41 patients who completed the treatment accepted to receive pregabalin, also flexibly dosed (75-450 mg/day), added to trazodone treatment for an additional 12-week period."( Trazodone plus pregabalin combination in the treatment of fibromyalgia: a two-phase, 24-week, open-label uncontrolled study.
Calandre, EP; Molina-Barea, R; Morillas-Arques, P; Rico-Villademoros, F; Rodriguez-Lopez, CM, 2011
)
0.37
" The low pregabalin dosage and the short time to elevation of liver enzyme levels suggest an idiosyncratic reaction."( Pregabalin-induced hepatotoxicity.
Junyent, TT; Pellicer, MJ; Sendra, JM, 2011
)
0.37
"In 32 PHN patients being administered gabapentin, without changing the frequency of dosing, the drug was substituted with pregabalin at one-sixth dosage of gabapentin."( Replacement of gabapentin with pregabalin in postherpetic neuralgia therapy.
Hidaka, I; Ifuku, M; Inada, E; Iseki, M; Komatus, S; Morita, Y, 2011
)
0.37
"It was suggested that the analgesic action of pregabalin in PHN was six times that of gabapentin in terms of effectiveness in dosage conversion."( Replacement of gabapentin with pregabalin in postherpetic neuralgia therapy.
Hidaka, I; Ifuku, M; Inada, E; Iseki, M; Komatus, S; Morita, Y, 2011
)
0.37
"Pregabalin was increased to ≤600 mg/day during a 9-week dose optimization period with dosage maintained for 12 additional weeks."( An open-label, add-on study of pregabalin in patients with partial seizures: a multicenter trial in Greece.
Emir, B; Garganis, K; Giannakodimos, S; Gkiatas, K; Karageorgiou, K; Kazis, D; Kimiskidis, VK; Lyras, L; Papadimitriou, A; Papathanasopoulos, P; Plaitakis, A; Tsounis, S, 2011
)
0.37
"To examine medication dosing patterns of duloxetine and pregabalin among patients with fibromyalgia."( Medication dosing patterns associated with duloxetine and pregabalin among patients with fibromyalgia.
Sun, P; Watson, P; Zhao, Y; Zhao, Z, 2011
)
0.37
"Among patients with fibromyalgia, duloxetine and pregabalin initiators had different dosing patterns."( Medication dosing patterns associated with duloxetine and pregabalin among patients with fibromyalgia.
Sun, P; Watson, P; Zhao, Y; Zhao, Z, 2011
)
0.37
"Study limitations include a short timeframe and using data from different dosage schemes for GBP and PGB."( Economic evaluation of duloxetine as a first-line treatment for painful diabetic peripheral neuropathy in Mexico.
Carlos, F; Dueñas, H; Galindo-Suárez, RM; Ramírez-Gámez, J; Ramos, E, 2012
)
0.38
" The objective of the current study was to examine the dose-response relationship for treatment of GAD with pregabalin."( Pregabalin: dose-response relationship in generalized anxiety disorder.
Boschen, MJ, 2012
)
0.38
"The current study pools results from previous fixed-dose treatment trials of GAD with pregabalin and uses curve-fitting statistical procedures to generate curvilinear regression lines as a synthesis of previous dose-response information."( Pregabalin: dose-response relationship in generalized anxiety disorder.
Boschen, MJ, 2012
)
0.38
" They have been shown to help in reaching the desired effect when administered at drug-specific modes and at proven effective dosing throughout the perioperative period."( Non-opioid IV adjuvants in the perioperative period: pharmacological and clinical aspects of ketamine and gabapentinoids.
Weinbroum, AA, 2012
)
0.38
"To compare medication dosing patterns of duloxetine and pregabalin among patients with diabetic peripheral neuropathic pain (DPNP)."( Dosing pattern comparison between duloxetine and pregabalin among patients with diabetic peripheral neuropathic pain.
Bernauer, M; Sun, P; Watson, P; Zhao, Y; Zhao, Z, 2012
)
0.38
" healthcare claims database, we examined the dosing patterns of duloxetine and pregabalin among commercially insured patients with DPNP aged 18 to 64 who initiated (a 90-day medication gap) duloxetine or pregabalin therapy in 2006."( Dosing pattern comparison between duloxetine and pregabalin among patients with diabetic peripheral neuropathic pain.
Bernauer, M; Sun, P; Watson, P; Zhao, Y; Zhao, Z, 2012
)
0.38
"The commercially insured patients with DPNP who initiated duloxetine or pregabalin therapy had different dosing patterns."( Dosing pattern comparison between duloxetine and pregabalin among patients with diabetic peripheral neuropathic pain.
Bernauer, M; Sun, P; Watson, P; Zhao, Y; Zhao, Z, 2012
)
0.38
" Study treatments were dosed incrementally over a three week period, to reach daily doses of 150 mg venlafaxine and 200mg pregabalin by the CO(2) challenge test day."( Evaluation of the effects of venlafaxine and pregabalin on the carbon dioxide inhalation models of Generalised Anxiety Disorder and panic.
Bailey, JE; Craig, K; Dawson, GR; Diaper, A; Dourish, CT; Nutt, DJ; Osman-Hicks, V; Rich, AS, 2013
)
0.39
"Available evidence suggests that monotherapy with pregabalin, within the dosage range of 150 - 600 mg/d, is a promising "novel" option for the safe and efficacious relapse prevention of both AD and BD."( Efficacy and safety of pregabalin in the treatment of alcohol and benzodiazepine dependence.
Konstantakopoulos, G; Oulis, P, 2012
)
0.38
" After confirming hyperalgesia, pregabalin or saline (for control mice) in a volume of 10 mL/kg was administered orally at a dosage of 30 mg/kg, twice daily from day 2 after surgery."( The immunomodulatory effect of pregabalin on spleen cells in neuropathic mice.
Jang, Y; Jeong, DC; Song, HK; Yeom, MY, 2012
)
0.38
"Linear regression analysis was used to evaluate the dose-response relationships between logarithms of drug doses and their resultant maximum possible antinociceptive effects in the mouse hot-plate test."( Synergistic interaction of pregabalin with the synthetic cannabinoid WIN 55,212-2 mesylate in the hot-plate test in mice: an isobolographic analysis.
Florek-Łuszczki, M; Luszczki, JJ, 2012
)
0.38
"The objective of this modeling study was to assess different dosage regimens that might be used to guide clinicians in transitioning patients from gabapentin to pregabalin therapy when such a transition is clinically warranted."( Gabapentin to pregabalin therapy transition: a pharmacokinetic simulation.
Bockbrader, HN; Budhwani, MN; Wesche, DL, 2013
)
0.39
" Drug dosage was determined by initial VAS (visual analog scale) scores."( A four arm, double blind, randomized and placebo controlled study of pregabalin in the management of post-burn pruritus.
Ahuja, RB; Gupta, GK, 2013
)
0.39
" The effective doses, for 20%, 50%, and 80% response (ED(20), ED(50), and ED(80), respectively), of each drug were calculated using least squares linear regression analysis, and then dose-response curves were compared."( Relative potency of pregabalin, gabapentin, and morphine in a mouse model of visceral pain.
Keyhanfar, F; Shamsi Meymandi, M, 2013
)
0.39
" No difference was observed between slopes of dose-response curves."( Relative potency of pregabalin, gabapentin, and morphine in a mouse model of visceral pain.
Keyhanfar, F; Shamsi Meymandi, M, 2013
)
0.39
"In this animal model of visceral pain, all three drugs exhibited parallel dose-response curves."( Relative potency of pregabalin, gabapentin, and morphine in a mouse model of visceral pain.
Keyhanfar, F; Shamsi Meymandi, M, 2013
)
0.39
"Pregabalin, within a dosage of 150-450 mg/day, showed beneficial effects for alcohol relapse prevention and contrasting results for the treatment of the withdrawal syndrome."( Pregabalin for alcohol dependence: a critical review of the literature.
Clerici, M; Guglielmo, R; Janiri, L; Martinotti, G, 2012
)
0.38
" It has also been reported that pregabalin used with oxycodine reveals analgesic effect with smaller dosage than pregabalin alone."( [Case of acute exacerbation of neuropathic cancer pain rapidly relieved by simultaneous oral intake of immediate release oxycodone and pregabalin].
Baba, M; Gomwo, I, 2012
)
0.38
" This study examines dosing patterns, therapy outcomes, healthcare utilization and costs of patients with PHN who initiate treatment with gabapentin or pregabalin."( Real-world treatment of post-herpetic neuralgia with gabapentin or pregabalin.
Becker, L; Halpern, R; Johnson, P; Sweeney, M, 2013
)
0.39
" The mean daily dosage was 826 mg for gabapentin and 187 mg for pregabalin."( Real-world treatment of post-herpetic neuralgia with gabapentin or pregabalin.
Becker, L; Halpern, R; Johnson, P; Sweeney, M, 2013
)
0.39
" Suboptimal dosing and discontinuation may be associated with supplementary use of other analgesics, especially opioids."( Real-world treatment of post-herpetic neuralgia with gabapentin or pregabalin.
Becker, L; Halpern, R; Johnson, P; Sweeney, M, 2013
)
0.39
" Mean PGB dosage was 279 mg/day."( Effect of pregabalin add-on treatment on seizure control, quality of life, and anxiety in patients with brain tumour-related epilepsy: a pilot study.
Carapella, CM; Dinapoli, L; Fabi, A; Maschio, M; Pace, A; Pompili, A; Sperati, F; Vidiri, A, 2012
)
0.38
"Mean pre-withdrawal pregabalin dosage was 386 mg/day, decreasing to 70 mg/day at mean lowest dosage."( Spasticity increases during pregabalin withdrawal.
Baguley, IJ; Braid, JJ; Kirker, SG, 2013
)
0.39
" Mean daily PRG dosage was 1424 mg."( Pregabalin abuse and dependence in Germany: results from a database query.
Freudenmann, RW; Gahr, M; Hiemke, C; Kölle, MA; Schönfeldt-Lecuona, C, 2013
)
0.39
" In the further course, she increased the daily PRG dosage and consulted other physicians to receive additional PRG prescriptions."( Concerns about pregabalin: further experience with its potential of causing addictive behaviors.
Franke, B; Freudenmann, RW; Gahr, M; Kölle, MA; Schönfeldt-Lecuona, C,
)
0.13
" In contrast to previous publications where exorbitant high concentrations were used, the effects of lavender oil in behavioral, biochemical, and electrophysiological experiments were investigated in physiological concentrations in the nanomolar range, which correlate to a single dosage of 80 mg/d in humans that was used in clinical trials."( Lavender oil-potent anxiolytic properties via modulating voltage dependent calcium channels.
Klugbauer, N; Leuner, K; Müller, WE; Nöldner, M; Schuwald, AM; Wilmes, T, 2013
)
0.39
" Range of dosage may fluctuate considerably, from 75 mg to 600 mg per day."( The potential of pregabalin in neurology, psychiatry and addiction: a qualitative overview.
Aguglia, E; Cavuto, M; De Berardis, D; Di Giannantonio, M; Iasevoli, F; Lupi, M; Martinotti, G; Salone, A; Santacroce, R; Sarchione, F; Serroni, N; Signorelli, M; Valchera, A, 2013
)
0.39
" We also summarised data on adverse events from all single dosage studies and calculated risk differences (RDs) and numbers needed to harm (NNHs)."( Gabapentin or pregabalin for the prophylaxis of episodic migraine in adults.
Chronicle, EP; Linde, M; McCrory, DC; Mulleners, WM, 2013
)
0.39
" One trial of gabapentin enacarbil (523 participants) failed to demonstrate a significant difference versus placebo or between doses for gabapentin enacarbil titrated to between 1200 mg and 3000 mg with regard to proportion of responders; there was also no evidence of a dose-response trend."( Gabapentin or pregabalin for the prophylaxis of episodic migraine in adults.
Chronicle, EP; Linde, M; McCrory, DC; Mulleners, WM, 2013
)
0.39
"At a simulated intragastric dosage of approximately 4 mg/kg every 8 hours, median pregabalin steady-state plasma concentration in healthy horses was within the therapeutic range reported for humans."( Pharmacokinetics of single-dose intragastric and intravenous pregabalin administration in clinically normal horses.
Divers, TJ; Mullen, KR; Schwark, W, 2013
)
0.39
" The medicine dosage will be titrated up to the participant's optimal dose, to a maximum 600 mg per day."( PRECISE - pregabalin in addition to usual care for sciatica: study protocol for a randomised controlled trial.
Billot, L; Day, RO; Hancock, MJ; Harris, I; Jan, S; Koes, BW; Latimer, J; Lin, CW; Maher, CG; Mathieson, S; McLachlan, AJ; Pik, J, 2013
)
0.39
" Several derivatization methods have been developed and used for their determination in bulk or pharmaceutical dosage forms."( A simple high-throughput method for determination of antiepileptic analogues of γ-aminobutyric acid in pharmaceutical dosage forms using microplate fluorescence reader.
Martinc, B; Vovk, T, 2013
)
0.39
" A dose-response curve was established for pregabalin at a fixed morphine dose and revealed that, at low doses, pregabalin dose-dependently enhanced the antinociceptive effects, while the opposite was true at high doses (17 and 25 mg/kg)."( Assessment of the antinociceptive effects of pregabalin alone or in combination with morphine during acetic acid-induced writhing in mice.
Keyhanfar, F; Shamsi Meymandi, M, 2013
)
0.39
" The aim of this study was to evaluate the cardiovascular (CV) effects of 3 weeks of dosing with venlafaxine, pregabalin and placebo on young healthy adults."( Changes in cardiovascular function after venlafaxine but not pregabalin in healthy volunteers: a double-blind, placebo-controlled study of orthostatic challenge, blood pressure and heart rate.
Bailey, JE; Craig, K; Dawson, GR; Diaper, A; Dourish, CT; Nutt, DJ; Rich, AS; Wilson, SJ, 2013
)
0.39
"To compare the efficacy, discontinuation rates, and safety of once nightly versus twice daily dosing of pregabalin in a community-based trial."( Twice daily versus once nightly dosing of pregabalin for fibromyalgia: a double-blind randomized clinical trial of efficacy and safety.
Kivitz, AJ; Maricic, MJ; Nasser, K; Silver, DS; Silverman, SL, 2014
)
0.4
"While a nightly dosing schedule of pregabalin has been used by clinicians hoping to improve treatment, this study showed no significant difference (either beneficial or detrimental) between either treatment option."( Twice daily versus once nightly dosing of pregabalin for fibromyalgia: a double-blind randomized clinical trial of efficacy and safety.
Kivitz, AJ; Maricic, MJ; Nasser, K; Silver, DS; Silverman, SL, 2014
)
0.4
"9nM) showed a good pharmacokinetic profile upon oral dosing at 10mg/kg in Sprague-Dawley (SD) rats."( Synthesis and pharmacological evaluation of novel N-aryl-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidine]-1'-carboxamides as TRPM8 antagonists.
Bhosale, VM; Chaudhari, SS; Gudi, GS; Kadam, AB; Karnik, PV; Khairatkar-Joshi, N; Mukhopadhyay, I; Raghuram, A; Rao, SS; Sangana, RR; Thomas, A; Vaiyapuri, TS; Wale, DP, 2013
)
0.39
" Dosing was set by the Dixon sequential up-down method; that is, a greater or less than 30% reduction in capsaicin pain decreased or increased the dose, respectively, by a fixed interval for the next subject."( Determination of the effective dose of pregabalin on human experimental pain using the sequential up-down method.
Wallace, MS; Wong, W, 2014
)
0.4
"Mean median daily dosage over 6 months was 53."( Effectiveness of duloxetine compared with pregabalin and gabapentin in diabetic peripheral neuropathic pain: results from a German observational study.
Birklein, F; Boess, FG; Happich, M; Schacht, A; Schneider, E; Wilhelm, S; Ziegler, D, 2014
)
0.4
" Here we describe a patient who displayed perverted head-shaking and positional downbeat nystagmus after prescription of a high dosage of pregabalin."( Perverted head-shaking and positional downbeat nystagmus in pregabalin intoxication.
Choi, JY; Jung, JM; Kim, SU; Kwon, DY; Park, YM; Woo, YS, 2014
)
0.4
"Women in the study group received 75 mg pregabalin 2 hours before surgery and then every 12 hours for 2 doses, and women in the control group received an identical capsule and the same dosage of placebo."( A randomized, double-blind, placebo-controlled trial of oral pregabalin for relief of shoulder pain after laparoscopic gynecologic surgery.
Charuluxananan, S; Nutthachote, P; Sirayapiwat, P; Wisawasukmongchol, W,
)
0.13
" Time-course data for the dose-response effects were analyzed using two-way analysis of variance and the posthoc Tukey-Kramer multiple-comparison test."( Antinociceptive effects of mirtazapine, pregabalin, and gabapentin after chronic constriction injury of the infraorbital nerve in rats.
Hashimoto, R; Hosokawa, K; Mashimo, T; Nakae, A; Nakai, K, 2014
)
0.4
" Dosage and side effects were recorded at each visit."( Long-term efficacy of OROS® hydromorphone combined with pregabalin for chronic non-cancer neuropathic pain.
Casali, M; Dauri, M; Lazzari, M; Sabato, AF; Sabato, E; Tufaro, G, 2014
)
0.4
" A dose-response analysis suggested increasing effect with increasing dose."( Pregabalin add-on for drug-resistant partial epilepsy.
Hemming, K; Marson, AG; Pulman, J, 2014
)
0.4
" The starting dosage of pregabalin was 75 mg/day and was increased up to as much as 300 mg/day, depending on the individual patient's condition, while tapering off hypnotics."( Effects of pregabalin in patients with hypnotic-dependent insomnia.
Cho, YW; Song, ML, 2014
)
0.4
" However, cost-analysis is only part of the equation when treating chronic pain patients and undervalues the relationships of enhanced compliance due to single-daily dosing and stable and reliable pharmacokinetics associated with extended-duration preparations using either retentive technologies or delayed absorption strategies."( Can Chronic Pain Patients Be Adequately Treated Using Generic Pain Medications to the Exclusion of Brand-Name Ones?
Anantamongkol, U; Candido, KD; Chiweshe, J; Knezevic, NN,
)
0.13
" Once daily (QD) dosing may be appropriate for ease of clinical use and patient convenience."( Pregabalin controlled-release pharmacokinetics in healthy volunteers: analysis of four multiple-dose randomized clinical pharmacology studies.
Alebic-Kolbah, T; Alvey, CW; Bockbrader, HN; Chew, ML; Pitman, VW; Plotka, A; Scavone, JM, 2014
)
0.4
" It may be related with using a similar dosage of dopaminergic drugs."( Augmentation in restless legs syndrome patients in Korea.
Cho, YW; Jeon, JY; Lee, HB; Moon, HJ; Song, ML, 2015
)
0.42
" In conventional therapy recommended dose for pregabalin is 75 mg twice daily or 50 mg three times a day, with maximum dosage of 600 mg/d."( Process and formulation variables of pregabalin microspheres prepared by w/o/o double emulsion solvent diffusion method and their clinical application by animal modeling studies.
Aydogan, E; Basci, N; Comoglu, S; Comoglu, T; Dogan, A; Dogan, M; Pehlivanoglu, B, 2015
)
0.42
" There were no significant differences in acute pain outcomes with pregabalin 100-300 mg between single preoperative dosing regimens and those including additional doses repeated after surgery."( Impact of pregabalin on acute and persistent postoperative pain: a systematic review and meta-analysis.
Habib, AS; Mishriky, BM; Waldron, NH, 2015
)
0.42
" The result showed that: visual analogue scale (VAS) and quality of sleep (QS) of three groups of patients after treatment all decreased obviously; group A had slow work, large amount of dosage and many adverse effects; group B had quick work, but the improvement on pain and sleep was not satisfactory; the curative effect of group C was higher than group A and B (p<0."( Curative effect research on curing intercostal neuralgia through paravertebral nerve block combined with pregabalin.
Wu, X; Xiao, P; Zhu, X, 2014
)
0.4
" We compared the overall rate of CSEs and intolerable CSEs (ICSEs-CSEs that led to dosage reduction or discontinuation) between different AEDs in both monotherapy and polytherapy."( Cosmetic side effects of antiepileptic drugs in adults with epilepsy.
Buchsbaum, R; Chen, B; Choi, H; Detyniecki, K; Hirsch, LJ; Javed, A; Kato, K; Legge, A; Moeller, J, 2015
)
0.42
" Cosmetic side effects leading to dosage change or discontinuation occurred most frequently with pregabalin and valproic acid compared with all other AEDs (13."( Cosmetic side effects of antiepileptic drugs in adults with epilepsy.
Buchsbaum, R; Chen, B; Choi, H; Detyniecki, K; Hirsch, LJ; Javed, A; Kato, K; Legge, A; Moeller, J, 2015
)
0.42
"Weight gain and alopecia were the most common patient-reported CSEs in this study, and weight gain was the most likely cosmetic side effect to result in dosage adjustment or medication discontinuation."( Cosmetic side effects of antiepileptic drugs in adults with epilepsy.
Buchsbaum, R; Chen, B; Choi, H; Detyniecki, K; Hirsch, LJ; Javed, A; Kato, K; Legge, A; Moeller, J, 2015
)
0.42
" The physician must determine the best dosing strategy, consider the use of combination therapy, and decide how best to treat patients who have responded poorly to other treatment options in the past."( Pregabalin for painful diabetic peripheral neuropathy: strategies for dosing, monotherapy vs. combination therapy, treatment-refractory patients, and adverse events.
Juhn, MS; Parsons, B; Sadosky, A; Varvara, R, 2015
)
0.42
" A discussion of pregabalin dosing and adverse events is also presented."( Pregabalin for painful diabetic peripheral neuropathy: strategies for dosing, monotherapy vs. combination therapy, treatment-refractory patients, and adverse events.
Juhn, MS; Parsons, B; Sadosky, A; Varvara, R, 2015
)
0.42
" The intensity of tactile allodynia in STZ-induced diabetic mice was alleviated by the oral administration of PGN; however, the antiallodynic effect varied according to its dosing time."( Dosing time-dependent changes in the analgesic effect of pregabalin on diabetic neuropathy in mice.
Akamine, T; Hashimoto, H; Koyanagi, S; Kusunose, N; Matsunaga, N; Ohdo, S; Taniguchi, M, 2015
)
0.42
"Results of a study analyzing economic and clinical outcomes one year after conversion from thrice- to twice-daily pregabalin dosing for pain are presented."( Conversion from thrice- to twice-daily pregabalin dosing for pain: Economic and clinical outcomes in a veteran population.
Duncan, K; Lopez, J; Malmstrom, R; Okolo, C, 2015
)
0.42
" The analyzed population included all patients receiving pregabalin for pain whose dosing was converted from thrice- to twice-daily pregabalin dosing during a one-year period."( Conversion from thrice- to twice-daily pregabalin dosing for pain: Economic and clinical outcomes in a veteran population.
Duncan, K; Lopez, J; Malmstrom, R; Okolo, C, 2015
)
0.42
"Among the 57 patients included in the data analysis, 41 continued to take pregabalin twice daily, 10 had pregabalin discontinued, and 6 had dosing reverted to thrice daily."( Conversion from thrice- to twice-daily pregabalin dosing for pain: Economic and clinical outcomes in a veteran population.
Duncan, K; Lopez, J; Malmstrom, R; Okolo, C, 2015
)
0.42
" Since, 5-HT6 antagonists improved the effectiveness of gabapentinoids, reduction in the dosage and frequency of gabapentinoids treatment may reduce the side effects."( 5-HT6 receptor antagonist attenuates the memory deficits associated with neuropathic pain and improves the efficacy of gabapentinoids.
Babu, VA; Bhyrapuneni, G; Goura, V; Jayarajan, P; Nirogi, R; Shinde, A; Yathavakilla, S, 2015
)
0.42
" The primary outcome will be oxycodone dosage needed to achieve satisfactory analgaesia on day 14."( MAGnesium-oral supplementation to reduce PAin in patients with severe PERipheral arterial occlusive disease: the MAG-PAPER randomised clinical trial protocol.
Bisighini, L; Bonardelli, S; Lamberti, L; Latronico, N; Minelli, C; Rizzo, F; Rizzolo, A; Turin, M; Venturini, MA; Zangrandi, M; Zappa, S, 2015
)
0.42
", dosing schedules, racial distribution, exclusion criteria that did not enroll mild severity patients)."( The safety and efficacy of pregabalin for treating subjects with fibromyalgia and moderate or severe baseline widespread pain.
Clair, A; Emir, B, 2016
)
0.43
" Here we attempted to perform the combinatorial drug therapy with P-glycoprotein (P-gp) inhibitors to lower therapeutic dosage of PGB in the intermittent cold stress-induced fibromyalgia-like pain model."( P-glycoprotein inhibitors improve effective dose and time of pregabalin to inhibit intermittent cold stress-induced central pain.
Fujita, W; Mukae, T; Ueda, H, 2016
)
0.43
" We determined the antiallodynic response of NCX1404 after acute or after 7, 14, and 21 days of repeated daily oral dosing in mice with streptozotocin (STZ)-induced painful diabetic neuropathy (PDN)."( Repeated Dosing with NCX1404, a Nitric Oxide-Donating Pregabalin, Re-establishes Normal Nociceptive Responses in Mice with Streptozotocin-Induced Painful Diabetic Neuropathy.
Almirante, N; Bastia, E; Brambilla, S; Impagnatiello, F; Ravani, A; Storoni, L; Targa, M; Varani, K; Vincenzi, F, 2016
)
0.43
"Pregabalin is currently approved for the treatment of epilepsy, generalized anxiety disorder and neuropathic pain with a licensed dosage range of 150 mg to 600 mg/day."( Use of Pregabalin - A Nationwide Pharmacoepidemiological Drug Utilization Study with Focus on Abuse Potential.
Damkier, P; Nielsen, J; Pottegård, A; Rosenzweig, M; Schjerning, O, 2016
)
0.43
" Patients entering the model received either a single application of capsaicin 8% patch or titrated daily dosing with pregabalin; after 8 weeks patients were classified as responders, non-responders, or were assumed to discontinue treatment due to intolerable adverse events."( Cost-Effectiveness of Capsaicin 8% Patch Compared with Pregabalin for the Treatment of Patients with Peripheral Neuropathic Pain in Scotland.
Bentley, A; Mankowski, C; Patel, S; Poole, C; Trueman, D, 2016
)
0.43
" Patient demographics, diagnoses (by READ codes) and pregabalin dosing data were collected."( Pregabalin prescriptions in the United Kingdom: a drug utilisation study of The Health Improvement Network (THIN) primary care database.
Abramsky, S; Asomaning, K; Liu, Q; Sobel, RE; Watt, S; Zhou, X, 2016
)
0.43
"A cohort of 18,951 patients was prescribed pregabalin; dosing information was available for 13,480 (71."( Pregabalin prescriptions in the United Kingdom: a drug utilisation study of The Health Improvement Network (THIN) primary care database.
Abramsky, S; Asomaning, K; Liu, Q; Sobel, RE; Watt, S; Zhou, X, 2016
)
0.43
" Initial pharmacokinetics evaluation indicated an excellent brain exposure following oral dosing in mice, suggesting that further investigation into the use of alkoxyisoxazoles as σ1 ligands for antinociception is warranted."( Development of Novel Alkoxyisoxazoles as Sigma-1 Receptor Antagonists with Antinociceptive Efficacy.
Gao, ZB; Gunosewoyo, H; Liu, T; Pang, T; Shi, JJ; Shi, M; Sun, H; Tang, J; Xu, YZ; Yang, F; Yu, LF; Zhang, W; Zheng, YM, 2016
)
0.43
"If adverse effects are carefully monitored and the administered dosage prudently determined, pregabalin can be an effective treatment for peripheral neuropathic pain in patients undergoing hemodialysis."( Efficacy and Safety of Pregabalin for the Treatment of Neuropathic Pain in Patients Undergoing Hemodialysis.
Abe, M; Higuchi, T; Okada, K; Okawa, E; Otsuki, T; Yamazaki, T, 2017
)
0.46
" We reported a patient with C5 [S(C5/C6)] ASIA Impairment Scale C SCI due to cervical myelopathy who presented CO2 retention when taking a therapeutic dosage of pregabalin."( Hypercapnia Caused by a Therapeutic Dosage of Pregabalin in a Tetraplegic Patient With Cervical Spinal Cord Injury.
Chang, MC; Choi, EJ; Do, KH; Yang, HE, 2017
)
0.46
" Patients were then randomly assigned to four groups, of which groups 1-3 (treatment groups; n=20) received orally pregabalin concentrations of 75mg, 150mg, and 300mg, respectively, for a night before surgery, 30min before surgery and 6h after surgery, whereas group 4 (control group; n=22) received a matching dosage of placebo at the same scheme."( Dose ranging effects of pregabalin on pain in patients undergoing laparoscopic hysterectomy: A randomized, double blinded, placebo controlled, clinical trial.
Asgari, Z; Hosseini, R; Nataj, M; Razavi, M; Rouholamin, S; Sepidarkish, M, 2017
)
0.46
"The pregabalin dose-response for pain, Patient Global Impression of Change (PGIC), and sleep quality measures in painful diabetic peripheral neuropathy (pDPN), postherpetic neuralgia (PHN), and fibromyalgia (FM) is relevant for physicians treating these patients."( Dose-response of pregabalin for diabetic peripheral neuropathy, postherpetic neuralgia, and fibromyalgia.
Arnold, LM; Clair, AG; Jorga, A; McCarberg, BH; Park, PW; Pauer, L; Thomas, N; Vissing, R; Whalen, E, 2017
)
0.46
"The dose-response of pregabalin for pain, PGIC, and sleep quality was demonstrated, highlighting the benefit of achieving the maximum recommended dose of 300 mg/day for pDPN, 300-600 mg/day for PHN, and 300-450 mg/day for FM."( Dose-response of pregabalin for diabetic peripheral neuropathy, postherpetic neuralgia, and fibromyalgia.
Arnold, LM; Clair, AG; Jorga, A; McCarberg, BH; Park, PW; Pauer, L; Thomas, N; Vissing, R; Whalen, E, 2017
)
0.46
"Demographic (gender, age) and clinical (licensed indications for pregabalin, treatment duration, dosing schedule, diagnoses, kidney function, previous treatment with pregabalin, and additional drug treatment combined with pregabalin) variables obtained from health records were studied."( Clinical Use of Pregabalin in General Practice in Catalonia, Spain: A Population-Based Cross-Sectional Study.
Lizano-Díez, I; Mariño, EL; Modamio, P; Oms-Arias, M; Pedraza-Gutiérrez, À; Viñas-Bastart, M, 2018
)
0.48
" Patients will continue their current pain medication at study onset, conditional upon dosage consistency during the prior 30 days."( Pregabalin versus gabapentin in the treatment of sciatica: study protocol for a randomised, double-blind, cross-over trial (PAGPROS).
Harriss, L; Hennessy, M; Marshman, LAG; Plummer, D; Robertson, K, 2018
)
0.48
" We evaluated the association between the RORs and ADEs of pregabalin and compared the age, dosage and time at which ADEs occurred in patients with and without cancer."( Adverse drug event profile associated with pregabalin among patients with and without cancer: analysis of a spontaneous reporting database.
Kose, E, 2018
)
0.48
"Chemotherapy-induced peripheral neuropathy (CIPN) is a type of peripheral neuropathic pain that may be dose-limiting in patients administered potentially curative cancer chemotherapy dosing regimens."( Comparative analgesic efficacy of pregabalin administered according to either a prevention protocol or an intervention protocol in rats with cisplatin-induced peripheral neuropathy.
Corradinni, L; Han, FY; Kuo, A; Nicholson, JR; Smith, MT, 2018
)
0.48
" Expert opinion: Although there are no published studies specifically comparing PGB-CR and PGB-IR formulations in FM patients, the efficacy and safety profiles of PGB-CR seem to be similar to those of the IR formulation, and the convenience of once-daily dosing potentially enhances patient compliance."( Controlled-release pregabalin in the treatment of fibromyalgia.
Alciati, A; Atzeni, F; Cirillo, M; Masala, IF; Perna, G; Sarzi-Puttini, P; Sciortino, D, 2018
)
0.48
" In vivo results in beagle dogs indicated that the optimized formulations are suitable as once-daily dosage forms, and dose proportionality was observed in doses ranging from 75 to 300 mg."( Preparation and evaluation of non-effervescent gastroretentive tablets containing pregabalin for once-daily administration and dose proportional pharmacokinetics.
Hwang, KM; Kim, S; Nguyen, TT; Park, ES; Park, YS, 2018
)
0.48
" Serial blood samples were collected up to 24 hours after the last dosing in each period."( Lack of a Clinically Significant Pharmacokinetic Interaction Between Pregabalin and Thioctic Acid in Healthy Volunteers.
Ahn, LY; Lee, H; Lim, KS; Rhee, SJ; Yu, KS, 2018
)
0.48
" Adults diagnosed with PTNP were randomly assigned (1:1) to 15 weeks of pregabalin (flexibly dosed 150-600 mg/day) or matching placebo."( Efficacy of pregabalin in post-traumatic peripheral neuropathic pain: a randomized, double-blind, placebo-controlled phase 3 trial.
Greenberg, S; Gregorian, G; Katz, N; Knapp, L; Markman, J; Parsons, B; Resnick, M; Scavone, J; Whalen, E; Yang, R, 2018
)
0.48
" Serial blood samples were collected before and after dosing for 36 hours, and plasma concentrations were determined using liquid chromatography-tandem mass spectrometry."( Dose-proportional pharmacokinetic properties of GLA5PR GLARS-NF1 controlled-release pregabalin in healthy Korean volunteers: a randomized, open, single-dose, parallel study.
Jang, K; Jeon, JY; Kim, MG; Kim, TE; Shin, KH, 2018
)
0.48
" Pregabalin was associated with an inhibitory effect on heart rate fluctuations and reduced hemodynamic complications after intubation, in a dose-dependent manner, but no effect on the required perioperative opioid dosage was found."( Preoperative Low-dose and High-dose Pregabalin and Cardiovascular Response to Endotracheal Intubation: A Prospective, Randomized, Single-blind, Controlled Study in China.
Bao, F; Chen, W; Hu, X; Huang, H; Jiang, H; Yang, C, 2019
)
0.51
" The relatively high consistency and reproducibility of two analgesics at doses known to be effective in treating clinically relevant pain supports the validity of using this pain test battery to investigate the analgesic activity and determine the active dosage of putative analgesic compounds in early clinical development."( Reproducibility of a battery of human evoked pain models to detect pharmacological effects of analgesic drugs.
Butt, RP; Denney, WS; Dua, P; Groeneveld, GJ; Hay, JL; Okkerse, P; Siebenga, PS; van Amerongen, G, 2019
)
0.51
"4 days, and the mean effective dosage was 200."( Description of the Treatment Course by Pregabalin for Anxiety in Patients With a Major Neurocognitive Disorder.
Doutone, A; Gombault, C; Krolak-Salmon, P; Lepetit, A; Mouchoux, C; Novais, T,
)
0.13
" The impact of demographic and other covariates on PK was assessed, and various dosing scenarios were simulated to inform pregabalin ER dosing/administration instructions."( Population Pharmacokinetics of Pregabalin Extended-Release in Healthy Volunteers and Patients With Postherpetic Neuralgia, Fibromyalgia, and Partial-Onset Seizures.
Bockbrader, H; Chapel, S; Chew, M; Ma, G; Marshall, S; Xie, R, 2019
)
0.51
"28), indicating a dose-response relationship."( Pregabalin add-on for drug-resistant focal epilepsy.
Bresnahan, R; Hemming, K; Marson, AG; Panebianco, M, 2019
)
0.51
" The efficacy of MMF as an immunosuppressant and long-term safety in cats of this dosage regimen is unknown."(
Abrams, G; Adolfsson, E; Agarwal, PK; Akkan, AG; Al Alhareth, NS; Alves, VGL; Armentano, R; Bahroos, E; Baig, M; Baldridge, KK; Barman, S; Bartolucci, C; Basit, A; Bertoli, SV; Bian, L; Bigatti, G; Bobenko, AI; Boix, PP; Bokulic, T; Bolink, HJ; Borowiec, J; Bulski, W; Burciaga, J; Butt, NS; Cai, AL; Campos, AM; Cao, G; Cao, Y; Čapo, I; Caruso, ML; Chao, CT; Cheatum, CM; Chelminski, K; Chen, AJW; Chen, C; Chen, CH; Chen, D; Chen, G; Chen, H; Chen, LH; Chen, R; Chen, RX; Chen, X; Cherdtrakulkiat, R; Chirvony, VS; Cho, JG; Chu, K; Ciurlino, D; Coletta, S; Contaldo, G; Crispi, F; Cui, JF; D'Esposito, M; de Biase, S; Demir, B; Deng, W; Deng, Z; Di Pinto, F; Domenech-Ximenos, B; Dong, G; Drácz, L; Du, XJ; Duan, LJ; Duan, Y; Ekendahl, D; Fan, W; Fang, L; Feng, C; Followill, DS; Foreman, SC; Fortunato, G; Frew, R; Fu, M; Gaál, V; Ganzevoort, W; Gao, DM; Gao, X; Gao, ZW; Garcia-Alvarez, A; Garza, MS; Gauthier, L; Gazzaz, ZJ; Ge, RS; Geng, Y; Genovesi, S; Geoffroy, V; Georg, D; Gigli, GL; Gong, J; Gong, Q; Groeneveld, J; Guerra, V; Guo, Q; Guo, X; Güttinger, R; Guyo, U; Haldar, J; Han, DS; Han, S; Hao, W; Hayman, A; He, D; Heidari, A; Heller, S; Ho, CT; Ho, SL; Hong, SN; Hou, YJ; Hu, D; Hu, X; Hu, ZY; Huang, JW; Huang, KC; Huang, Q; Huang, T; Hwang, JK; Izewska, J; Jablonski, CL; Jameel, T; Jeong, HK; Ji, J; Jia, Z; Jiang, W; Jiang, Y; Kalumpha, M; Kang, JH; Kazantsev, P; Kazemier, BM; Kebede, B; Khan, SA; Kiss, J; Kohen, A; Kolbenheyer, E; Konai, MM; Koniarova, I; Kornblith, E; Krawetz, RJ; Kreouzis, T; Kry, SF; Laepple, T; Lalošević, D; Lan, Y; Lawung, R; Lechner, W; Lee, KH; Lee, YH; Leonard, C; Li, C; Li, CF; Li, CM; Li, F; Li, J; Li, L; Li, S; Li, X; Li, Y; Li, YB; Li, Z; Liang, C; Lin, J; Lin, XH; Ling, M; Link, TM; Liu, HH; Liu, J; Liu, M; Liu, W; Liu, YP; Lou, H; Lu, G; Lu, M; Lun, SM; Ma, Z; Mackensen, A; Majumdar, S; Martineau, C; Martínez-Pastor, JP; McQuaid, JR; Mehrabian, H; Meng, Y; Miao, T; Miljković, D; Mo, J; Mohamed, HSH; Mohtadi, M; Mol, BWJ; Moosavi, L; Mosdósi, B; Nabu, S; Nava, E; Ni, L; Novakovic-Agopian, T; Nyamunda, BC; Nyul, Z; Önal, B; Özen, D; Özyazgan, S; Pajkrt, E; Palazon, F; Park, HW; Patai, Á; Patai, ÁV; Patzke, GR; Payette, G; Pedoia, V; Peelen, MJCS; Pellitteri, G; Peng, J; Perea, RJ; Pérez-Del-Rey, D; Popović, DJ; Popović, JK; Popović, KJ; Posecion, L; Povall, J; Prachayasittikul, S; Prachayasittikul, V; Prat-González, S; Qi, B; Qu, B; Rakshit, S; Ravelli, ACJ; Ren, ZG; Rivera, SM; Salo, P; Samaddar, S; Samper, JLA; Samy El Gendy, NM; Schmitt, N; Sekerbayev, KS; Sepúlveda-Martínez, Á; Sessolo, M; Severi, S; Sha, Y; Shen, FF; Shen, X; Shen, Y; Singh, P; Sinthupoom, N; Siri, S; Sitges, M; Slovak, JE; Solymosi, N; Song, H; Song, J; Song, M; Spingler, B; Stewart, I; Su, BL; Su, JF; Suming, L; Sun, JX; Tantimavanich, S; Tashkandi, JM; Taurbayev, TI; Tedgren, AC; Tenhunen, M; Thwaites, DI; Tibrewala, R; Tomsejm, M; Triana, CA; Vakira, FM; Valdez, M; Valente, M; Valentini, AM; Van de Winckel, A; van der Lee, R; Varga, F; Varga, M; Villarino, NF; Villemur, R; Vinatha, SP; Vincenti, A; Voskamp, BJ; Wang, B; Wang, C; Wang, H; Wang, HT; Wang, J; Wang, M; Wang, N; Wang, NC; Wang, Q; Wang, S; Wang, X; Wang, Y; Wang, Z; Wen, N; Wesolowska, P; Willis, M; Wu, C; Wu, D; Wu, L; Wu, X; Wu, Z; Xia, JM; Xia, X; Xia, Y; Xiao, J; Xiao, Y; Xie, CL; Xie, LM; Xie, S; Xing, Z; Xu, C; Xu, J; Yan, D; Yan, K; Yang, S; Yang, X; Yang, XW; Ye, M; Yin, Z; Yoon, N; Yoon, Y; Yu, H; Yu, K; Yu, ZY; Zhang, B; Zhang, GY; Zhang, H; Zhang, J; Zhang, M; Zhang, Q; Zhang, S; Zhang, W; Zhang, X; Zhang, Y; Zhang, YW; Zhang, Z; Zhao, D; Zhao, F; Zhao, P; Zhao, W; Zhao, Z; Zheng, C; Zhi, D; Zhou, C; Zhou, FY; Zhu, D; Zhu, J; Zhu, Q; Zinyama, NP; Zou, M; Zou, Z, 2019
)
0.51
" We hypothesized that use of a gabapentinoid on the day of THA or TKA is associated with an increased risk of postoperative pulmonary complications in a dose-response fashion compared with the risk for patients who did not receive the drug."( Dose-Dependent Association of Gabapentinoids with Pulmonary Complications After Total Hip and Knee Arthroplasties.
Bartz, RR; Bryan, WE; Ellis, AR; Fuller, M; Haines, KL; Krishnamoorthy, V; Moore, S; Ohnuma, T; Pepin, MJ; Pyati, S; Raghunathan, K; Setoguchi, S; Whittle, J, 2020
)
0.56
"Exposure to gabapentinoids at any dose on the day of THA or TKA was associated with increased odds of postoperative pulmonary complications in a dose-response fashion, with minimal effects on perioperative opioid consumption."( Dose-Dependent Association of Gabapentinoids with Pulmonary Complications After Total Hip and Knee Arthroplasties.
Bartz, RR; Bryan, WE; Ellis, AR; Fuller, M; Haines, KL; Krishnamoorthy, V; Moore, S; Ohnuma, T; Pepin, MJ; Pyati, S; Raghunathan, K; Setoguchi, S; Whittle, J, 2020
)
0.56
" Furthermore, most preclinical antiepileptogenic studies lack information needed for translation, such as dose-blood level relationship, brain target engagement, and dose-response, and many use treatment parameters that cannot be applied clinically, for example, treatment initiation before or at the time of injury and dosing higher than tolerated human equivalent dosing."( Repurposed molecules for antiepileptogenesis: Missing an opportunity to prevent epilepsy?
Bar-Klein, G; Friedman, A; Hameed, MQ; Jozwiak, S; Kaminski, RM; Klein, P; Klitgaard, H; Koepp, M; Löscher, W; Prince, DA; Rotenberg, A; Twyman, R; Vezzani, A; Wong, M, 2020
)
0.56
"The objective of this systematic review was to determine the effectiveness of preoperative oral pregabalin for anxiety control, the most effective dosage regimen, its impact on postoperative pain, and its adverse effects."( Preoperative oral pregabalin for anxiety control: a systematic review.
Manzano-Moreno, FJ; Olmedo-Gaya, MV; Torres-González, MI; Vallecillo-Capilla, MF, 2020
)
0.56
" Baseline paw withdrawal thresholds (PWTs) were determined in the ipsilateral (injured side) and contralateral hindpaws immediately prior to dosing and at scheduled times for 3 h post dosing in individual animals."( Assessment of the anti-allodynic efficacy of a glycine transporter 2 inhibitor relative to pregabalin and duloxetine in a rat model of prostate cancer-induced bone pain.
Corradini, L; Imam, MZ; Kuo, A; Nicholson, JR; Smith, MT, 2020
)
0.56
" A dose-response relationship was demonstrated and the risk of NDs was more particularly increased for an exposure to VPA during the second or third trimesters of pregnancy."( Risk of early neurodevelopmental disorders associated with in utero exposure to valproate and other antiepileptic drugs: a nationwide cohort study in France.
Blotiere, PO; Coste, J; Dray-Spira, R; Mikaeloff, Y; Miranda, S; Peyre, H; Ramus, F; Weill, A; Zureik, M, 2020
)
0.56
" This study used population pharmacokinetic (PK) and exposure-response (E-R) analyses from pooled pregabalin concentration and efficacy data to compare pregabalin exposure and E-R relationships in pediatric and adult patients with FOS, to support pediatric dosage recommendations."( Pregabalin Population Pharmacokinetic and Exposure-Response Analyses for Focal Onset Seizures in Children (4-16 years) and Adults, to Support Dose Recommendations in Children.
Chan, PLS; Liu, J; Marshall, SF; McFadyen, L, 2021
)
0.62
"Fixed-dose combinations (FDCs) refer to products containing two or more active ingredients combined in a single dosage form."( A Critical Review on Analytical Methods for Recently Approved FDC Drugs: Pregabalin and Etoricoxib.
Kotadiya, R; Shah, J, 2022
)
0.72
"The effectiveness of the treatment depends on the adequate dosage of medications."( Increasing the dosage of pregabalin in patients with focal epilepsy decreases the frequency of seizures and ameliorates symptoms of anxiety, depression and insomnia.
Almgren-Rachtan, A; Chudek, J; Jedrzejczak, J; Murawiec, S; Nieves, W, 2020
)
0.56
" To ensure that patients derive maximum therapeutic benefit from the drug, we suggest a 'low and slow' dosing approach to limit common side effects and optimize tolerability alongside patients' expectations."( Pregabalin for neuropathic pain in primary care settings: recommendations for dosing and titration.
Baron, R; Freynhagen, R; Jensen, TS; Kawaguchi, Y; Malik, RA; Martire, DL; Parsons, B; Rey, RD; Schug, SA; Tölle, TR; Ushida, T; Whalen, E, 2021
)
0.62
" The mechanism underpinning pain relief induced by the GlyT2 inhibitor at 10 mg/kg is likely due to increased glycinergic inhibition in the lumbar spinal cord, although the bell-shaped dose-response curve warrants further translational considerations."( Assessment of the Anti-Allodynic and Anti-Hyperalgesic Efficacy of a Glycine Transporter 2 Inhibitor Relative to Pregabalin, Duloxetine and Indomethacin in a Rat Model of Cisplatin-Induced Peripheral Neuropathy.
Corradini, L; Kuo, A; Nicholson, JR; Smith, MT, 2021
)
0.62
"A new sustained-release (SR) pregabalin formulation (YHD1119) designed for once-daily dosing has recently been developed to improve patient adherence."( Pharmacokinetics of a New, Once-Daily, Sustained-release Pregabalin Tablet in Healthy Male Volunteers.
An, T; Jang, SB; Jeon, JY; Kim, MG; Kim, S; Lee, SY; Lim, Y; Moon, SJ; Na, WS, 2021
)
0.62
" In conclusion, the developed PBPK model is a valuable tool for predicting PGB dosage for pediatric patients with RI."( Development of Physiologically Based Pharmacokinetic Model for Pregabalin to Predict the Pharmacokinetics in Pediatric Patients with Renal Impairment and Adjust Dosage Regimens: PBPK Model of Pregabalin in Pediatric Patients with Renal Impairment.
Chen, J; Guo, G; Huang, P; Ke, C; Lin, C; Wu, W; Ye, L; You, X, 2022
)
0.72
"28), indicating a dose-response relationship."( Pregabalin add-on for drug-resistant focal epilepsy.
Bresnahan, R; Marson, AG; Panebianco, M, 2022
)
0.72
" Subgroup analyses showed that no difference was detected between subgroups stratified by dosing regimen or pregabalin dose in the results of opioid consumption, pain intensity and incidence of complications."( The preemptive effects of oral pregabalin on perioperative pain management in lower limb orthopedic surgery: a systematic review and meta-analysis.
Chen, J; Chen, Z; Jiang, J; Luo, R; Xiang, Z, 2022
)
0.72
" The optimal dosing of ibuprofen is unclear, but a single dose of ibuprofen 1600 mg was shown to be effective, and it was less certain whether 800 mg was effective."( Pain management for medical abortion before 14 weeks' gestation.
Cameron, S; Morroni, C; Reynolds-Wright, JJ; Woldetsadik, MA, 2022
)
0.72
" Gabapentenoid dosing varied among studies."( Gabapentinoids and Acetaminophen as Adjuvants for Managing Postoperative Pain.
Gill, C; Giuliano, K, 2022
)
0.72
" These should be used in reduced doses, avoiding tizanidine with liver disease and reducing baclofen dosing with kidney disease."( Pharmacotherapy for Spine-Related Pain in Older Adults.
Fu, JL; Perloff, MD, 2022
)
0.72
" The patient was also taking pregabalin which was initially started at dosing of 50 mg taken orally three times a day."( Lucid Dreams Associated with Pregabalin: Implications for Clinical Practice.
Chang, YD; Craig, DS; Guastella, AM; Haas, MF; Latchman, J, 2022
)
0.72
" Besides pregabalin (150 mg/day), the patients, upon their group assignment, received CoQ10 at a dosage of 100 mg every 8 h or matched placebo for 8 consecutive weeks."( Coenzyme Q10 as a potential add-on treatment for patients suffering from painful diabetic neuropathy: results of a placebo-controlled randomized trial.
Amini, P; Mehrpooya, M; Mirjalili, M; Mohammadi, Y; Sajedi, F, 2022
)
0.72
" Further research with more enrollment and longer study duration may help elucidate the appropriate dosing and potential associated side effects."( Case Series: Synergistic Effect of Gabapentin and Adjuvant Pregabalin in Neuropathic Pain.
Chow, SP; Donelenko, S; Stevens, S; Tran, S, 2023
)
0.91
" However, studies of real-world gabapentinoid dosing demonstrate that the recommended dose targets are frequently not met and do not consider renal insufficiency."( Characterization of Outpatient Gabapentinoid Prescribing for Pain.
A Bowman, L; Banks, C; Merrey, J; Waldfogel, JM, 2023
)
0.91
" Both the administrated dosage and the time of administration are important in the final results and latency time of retention."( The effect of gabapentin and pregabalin administration on memory in clinical and preclinical studies: a meta-analysis and systematic review.
Azizi, H; Behroozi, Z; Jafarpour, M; Janzadeh, A; Kheirandish, A; Kosari-Rad, T; Ramezni, F; Razmgir, M; Saffarpour, S, 2023
)
0.91
" The effect of treatment was assessed using a Pain Numeric Rating Scale (NRS) and determined by changes in medication dosage and quality of life at day 7 and 3 months."( Cryoneurolysis of alveolar nerves for chronic dental pain: A new technique and a case series.
Broome, M; Cachemaille, M; Geering, S, 2023
)
0.91
" Compared with pregabalin monotherapy, PRF combined with pregabalin significantly decreased the pittsburgh sleep quality index score, the dosage and number of days of using pregabalin (P < ."( Efficacy and safety of pulsed radiofrequency combined with pregabalin for herpetic neuralgia: A systematic review and meta-analysis.
Chen, J; Lan, L; Wang, W; Xu, X, 2023
)
0.91
" This study will provide evidence for the optimal dosage of pregabalin for the treatment of postoperative pain after spinal surgery."( Pregabalin as an effective treatment for acute postoperative pain following spinal surgery without major side effects: protocol for a prospective, randomized controlled, double-blinded trial.
Chung, HW; Chung, NS; Kim, TY; Lee, HD; Park, KH, 2023
)
0.91
" They were also excluded if they lacked sufficient information about how long or at what dosage they had been using the drug."( Abuse and addiction in gabapentinoid drug users for neuropathic pain.
Aydin Özaslan, E; Kiliç, Z, 2023
)
0.91
" The optimal dosage of pregabalin and gabapentin for pain control and safety in these patients has not been well established."( Different Gabapentin and Pregabalin Dosages for Perioperative Pain Control in Patients Undergoing Spine Surgery: A Systematic Review and Network Meta-Analysis.
Bydon, M; Durrani, S; El Sammak, S; Fu, TS; Ghaith, AK; Hu, CW; Krzyz, EZ; Lin, CCJ; Lin, TY; Tsai, SHL, 2023
)
0.91
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Roles (2)

RoleDescription
anticonvulsantA drug used to prevent seizures or reduce their severity.
calcium channel blockerOne of a class of drugs that acts by selective inhibition of calcium influx through cell membranes or on the release and binding of calcium in intracellular pools.
[role information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Drug Classes (1)

ClassDescription
gamma-amino acidA non-proteinogenic amino-acid in which the amino group is located on the carbon atom at the position gamma to the carboxy group.
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Protein Targets (9)

Potency Measurements

ProteinTaxonomyMeasurementAverage (µ)Min (ref.)Avg (ref.)Max (ref.)Bioassay(s)
EWS/FLI fusion proteinHomo sapiens (human)Potency16.62610.001310.157742.8575AID1259253
estrogen nuclear receptor alphaHomo sapiens (human)Potency13.33320.000229.305416,493.5996AID743079
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Inhibition Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
ATP-binding cassette sub-family C member 3Homo sapiens (human)IC50 (µMol)133.00000.63154.45319.3000AID1473740
Multidrug resistance-associated protein 4Homo sapiens (human)IC50 (µMol)133.00000.20005.677410.0000AID1473741
Bile salt export pumpHomo sapiens (human)IC50 (µMol)133.00000.11007.190310.0000AID1473738
Sodium-dependent noradrenaline transporter Homo sapiens (human)IC50 (µMol)10.00000.00081.541620.0000AID1709035
Sodium-dependent noradrenaline transporter Homo sapiens (human)Ki10.00000.00031.465610.0000AID1709034
Voltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)Ki0.01900.01900.01900.0190AID1709032; AID1766516
Canalicular multispecific organic anion transporter 1Homo sapiens (human)IC50 (µMol)133.00002.41006.343310.0000AID1473739
Voltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)Ki0.09900.09900.09900.0990AID1709033
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Other Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
Voltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)INH0.03900.03900.03900.0390AID1496105
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Biological Processes (72)

Processvia Protein(s)Taxonomy
xenobiotic metabolic processATP-binding cassette sub-family C member 3Homo sapiens (human)
xenobiotic transmembrane transportATP-binding cassette sub-family C member 3Homo sapiens (human)
bile acid and bile salt transportATP-binding cassette sub-family C member 3Homo sapiens (human)
glucuronoside transportATP-binding cassette sub-family C member 3Homo sapiens (human)
xenobiotic transportATP-binding cassette sub-family C member 3Homo sapiens (human)
transmembrane transportATP-binding cassette sub-family C member 3Homo sapiens (human)
leukotriene transportATP-binding cassette sub-family C member 3Homo sapiens (human)
monoatomic anion transmembrane transportATP-binding cassette sub-family C member 3Homo sapiens (human)
transport across blood-brain barrierATP-binding cassette sub-family C member 3Homo sapiens (human)
prostaglandin secretionMultidrug resistance-associated protein 4Homo sapiens (human)
cilium assemblyMultidrug resistance-associated protein 4Homo sapiens (human)
platelet degranulationMultidrug resistance-associated protein 4Homo sapiens (human)
xenobiotic metabolic processMultidrug resistance-associated protein 4Homo sapiens (human)
xenobiotic transmembrane transportMultidrug resistance-associated protein 4Homo sapiens (human)
bile acid and bile salt transportMultidrug resistance-associated protein 4Homo sapiens (human)
prostaglandin transportMultidrug resistance-associated protein 4Homo sapiens (human)
urate transportMultidrug resistance-associated protein 4Homo sapiens (human)
glutathione transmembrane transportMultidrug resistance-associated protein 4Homo sapiens (human)
transmembrane transportMultidrug resistance-associated protein 4Homo sapiens (human)
cAMP transportMultidrug resistance-associated protein 4Homo sapiens (human)
leukotriene transportMultidrug resistance-associated protein 4Homo sapiens (human)
monoatomic anion transmembrane transportMultidrug resistance-associated protein 4Homo sapiens (human)
export across plasma membraneMultidrug resistance-associated protein 4Homo sapiens (human)
transport across blood-brain barrierMultidrug resistance-associated protein 4Homo sapiens (human)
guanine nucleotide transmembrane transportMultidrug resistance-associated protein 4Homo sapiens (human)
fatty acid metabolic processBile salt export pumpHomo sapiens (human)
bile acid biosynthetic processBile salt export pumpHomo sapiens (human)
xenobiotic metabolic processBile salt export pumpHomo sapiens (human)
xenobiotic transmembrane transportBile salt export pumpHomo sapiens (human)
response to oxidative stressBile salt export pumpHomo sapiens (human)
bile acid metabolic processBile salt export pumpHomo sapiens (human)
response to organic cyclic compoundBile salt export pumpHomo sapiens (human)
bile acid and bile salt transportBile salt export pumpHomo sapiens (human)
canalicular bile acid transportBile salt export pumpHomo sapiens (human)
protein ubiquitinationBile salt export pumpHomo sapiens (human)
regulation of fatty acid beta-oxidationBile salt export pumpHomo sapiens (human)
carbohydrate transmembrane transportBile salt export pumpHomo sapiens (human)
bile acid signaling pathwayBile salt export pumpHomo sapiens (human)
cholesterol homeostasisBile salt export pumpHomo sapiens (human)
response to estrogenBile salt export pumpHomo sapiens (human)
response to ethanolBile salt export pumpHomo sapiens (human)
xenobiotic export from cellBile salt export pumpHomo sapiens (human)
lipid homeostasisBile salt export pumpHomo sapiens (human)
phospholipid homeostasisBile salt export pumpHomo sapiens (human)
positive regulation of bile acid secretionBile salt export pumpHomo sapiens (human)
regulation of bile acid metabolic processBile salt export pumpHomo sapiens (human)
transmembrane transportBile salt export pumpHomo sapiens (human)
monoamine transportSodium-dependent noradrenaline transporter Homo sapiens (human)
neurotransmitter transportSodium-dependent noradrenaline transporter Homo sapiens (human)
chemical synaptic transmissionSodium-dependent noradrenaline transporter Homo sapiens (human)
response to xenobiotic stimulusSodium-dependent noradrenaline transporter Homo sapiens (human)
response to painSodium-dependent noradrenaline transporter Homo sapiens (human)
norepinephrine uptakeSodium-dependent noradrenaline transporter Homo sapiens (human)
neuron cellular homeostasisSodium-dependent noradrenaline transporter Homo sapiens (human)
amino acid transportSodium-dependent noradrenaline transporter Homo sapiens (human)
norepinephrine transportSodium-dependent noradrenaline transporter Homo sapiens (human)
dopamine uptake involved in synaptic transmissionSodium-dependent noradrenaline transporter Homo sapiens (human)
sodium ion transmembrane transportSodium-dependent noradrenaline transporter Homo sapiens (human)
calcium ion transportVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
regulation of calcium ion transportVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
regulation of ventricular cardiac muscle cell membrane repolarizationVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
calcium ion transport into cytosolVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
calcium ion transmembrane transport via high voltage-gated calcium channelVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
cardiac muscle cell action potential involved in contractionVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
membrane depolarization during bundle of His cell action potentialVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
regulation of heart rate by cardiac conductionVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
calcium ion import across plasma membraneVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
regulation of membrane repolarization during action potentialVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
positive regulation of high voltage-gated calcium channel activityVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
regulation of calcium ion transmembrane transport via high voltage-gated calcium channelVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
cellular response to amyloid-betaVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
xenobiotic metabolic processCanalicular multispecific organic anion transporter 1Homo sapiens (human)
xenobiotic transmembrane transportCanalicular multispecific organic anion transporter 1Homo sapiens (human)
negative regulation of gene expressionCanalicular multispecific organic anion transporter 1Homo sapiens (human)
bile acid and bile salt transportCanalicular multispecific organic anion transporter 1Homo sapiens (human)
bilirubin transportCanalicular multispecific organic anion transporter 1Homo sapiens (human)
heme catabolic processCanalicular multispecific organic anion transporter 1Homo sapiens (human)
xenobiotic export from cellCanalicular multispecific organic anion transporter 1Homo sapiens (human)
transmembrane transportCanalicular multispecific organic anion transporter 1Homo sapiens (human)
transepithelial transportCanalicular multispecific organic anion transporter 1Homo sapiens (human)
leukotriene transportCanalicular multispecific organic anion transporter 1Homo sapiens (human)
monoatomic anion transmembrane transportCanalicular multispecific organic anion transporter 1Homo sapiens (human)
transport across blood-brain barrierCanalicular multispecific organic anion transporter 1Homo sapiens (human)
xenobiotic transport across blood-brain barrierCanalicular multispecific organic anion transporter 1Homo sapiens (human)
neuromuscular junction developmentVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
organ growthVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
regulation of multicellular organism growthVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
positive regulation of organ growthVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
muscle cell developmentVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
rhythmic synaptic transmissionVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
calcium ion transmembrane transportVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Molecular Functions (36)

Processvia Protein(s)Taxonomy
ATP bindingATP-binding cassette sub-family C member 3Homo sapiens (human)
ABC-type xenobiotic transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
glucuronoside transmembrane transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
ABC-type glutathione S-conjugate transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
ABC-type bile acid transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
ATP hydrolysis activityATP-binding cassette sub-family C member 3Homo sapiens (human)
ATPase-coupled transmembrane transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
xenobiotic transmembrane transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
ATPase-coupled inorganic anion transmembrane transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
icosanoid transmembrane transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
ABC-type transporter activityATP-binding cassette sub-family C member 3Homo sapiens (human)
guanine nucleotide transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
protein bindingMultidrug resistance-associated protein 4Homo sapiens (human)
ATP bindingMultidrug resistance-associated protein 4Homo sapiens (human)
ABC-type xenobiotic transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
prostaglandin transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
urate transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
purine nucleotide transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
ABC-type glutathione S-conjugate transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
ABC-type bile acid transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
efflux transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
15-hydroxyprostaglandin dehydrogenase (NAD+) activityMultidrug resistance-associated protein 4Homo sapiens (human)
ATP hydrolysis activityMultidrug resistance-associated protein 4Homo sapiens (human)
glutathione transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
ATPase-coupled transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
xenobiotic transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
ATPase-coupled inorganic anion transmembrane transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
ABC-type transporter activityMultidrug resistance-associated protein 4Homo sapiens (human)
protein bindingBile salt export pumpHomo sapiens (human)
ATP bindingBile salt export pumpHomo sapiens (human)
ABC-type xenobiotic transporter activityBile salt export pumpHomo sapiens (human)
bile acid transmembrane transporter activityBile salt export pumpHomo sapiens (human)
canalicular bile acid transmembrane transporter activityBile salt export pumpHomo sapiens (human)
carbohydrate transmembrane transporter activityBile salt export pumpHomo sapiens (human)
ABC-type bile acid transporter activityBile salt export pumpHomo sapiens (human)
ATP hydrolysis activityBile salt export pumpHomo sapiens (human)
actin bindingSodium-dependent noradrenaline transporter Homo sapiens (human)
neurotransmitter transmembrane transporter activitySodium-dependent noradrenaline transporter Homo sapiens (human)
neurotransmitter:sodium symporter activitySodium-dependent noradrenaline transporter Homo sapiens (human)
dopamine:sodium symporter activitySodium-dependent noradrenaline transporter Homo sapiens (human)
norepinephrine:sodium symporter activitySodium-dependent noradrenaline transporter Homo sapiens (human)
protein bindingSodium-dependent noradrenaline transporter Homo sapiens (human)
monoamine transmembrane transporter activitySodium-dependent noradrenaline transporter Homo sapiens (human)
alpha-tubulin bindingSodium-dependent noradrenaline transporter Homo sapiens (human)
metal ion bindingSodium-dependent noradrenaline transporter Homo sapiens (human)
beta-tubulin bindingSodium-dependent noradrenaline transporter Homo sapiens (human)
voltage-gated calcium channel activityVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
voltage-gated calcium channel activity involved in cardiac muscle cell action potentialVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
voltage-gated calcium channel activity involved in bundle of His cell action potentialVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
voltage-gated calcium channel activityVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
metal ion bindingVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
protein bindingCanalicular multispecific organic anion transporter 1Homo sapiens (human)
ATP bindingCanalicular multispecific organic anion transporter 1Homo sapiens (human)
organic anion transmembrane transporter activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
ABC-type xenobiotic transporter activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
bilirubin transmembrane transporter activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
ABC-type glutathione S-conjugate transporter activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
ATP hydrolysis activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
ATPase-coupled transmembrane transporter activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
xenobiotic transmembrane transporter activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
ATPase-coupled inorganic anion transmembrane transporter activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
ABC-type transporter activityCanalicular multispecific organic anion transporter 1Homo sapiens (human)
metal ion bindingVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
voltage-gated calcium channel activityVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Ceullar Components (24)

Processvia Protein(s)Taxonomy
plasma membraneATP-binding cassette sub-family C member 3Homo sapiens (human)
basal plasma membraneATP-binding cassette sub-family C member 3Homo sapiens (human)
basolateral plasma membraneATP-binding cassette sub-family C member 3Homo sapiens (human)
membraneATP-binding cassette sub-family C member 3Homo sapiens (human)
nucleolusMultidrug resistance-associated protein 4Homo sapiens (human)
Golgi apparatusMultidrug resistance-associated protein 4Homo sapiens (human)
plasma membraneMultidrug resistance-associated protein 4Homo sapiens (human)
membraneMultidrug resistance-associated protein 4Homo sapiens (human)
basolateral plasma membraneMultidrug resistance-associated protein 4Homo sapiens (human)
apical plasma membraneMultidrug resistance-associated protein 4Homo sapiens (human)
platelet dense granule membraneMultidrug resistance-associated protein 4Homo sapiens (human)
external side of apical plasma membraneMultidrug resistance-associated protein 4Homo sapiens (human)
plasma membraneMultidrug resistance-associated protein 4Homo sapiens (human)
basolateral plasma membraneBile salt export pumpHomo sapiens (human)
Golgi membraneBile salt export pumpHomo sapiens (human)
endosomeBile salt export pumpHomo sapiens (human)
plasma membraneBile salt export pumpHomo sapiens (human)
cell surfaceBile salt export pumpHomo sapiens (human)
apical plasma membraneBile salt export pumpHomo sapiens (human)
intercellular canaliculusBile salt export pumpHomo sapiens (human)
intracellular canaliculusBile salt export pumpHomo sapiens (human)
recycling endosomeBile salt export pumpHomo sapiens (human)
recycling endosome membraneBile salt export pumpHomo sapiens (human)
extracellular exosomeBile salt export pumpHomo sapiens (human)
membraneBile salt export pumpHomo sapiens (human)
plasma membraneSodium-dependent noradrenaline transporter Homo sapiens (human)
cell surfaceSodium-dependent noradrenaline transporter Homo sapiens (human)
membraneSodium-dependent noradrenaline transporter Homo sapiens (human)
neuronal cell body membraneSodium-dependent noradrenaline transporter Homo sapiens (human)
presynaptic membraneSodium-dependent noradrenaline transporter Homo sapiens (human)
plasma membraneSodium-dependent noradrenaline transporter Homo sapiens (human)
axonSodium-dependent noradrenaline transporter Homo sapiens (human)
plasma membraneVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
sarcoplasmic reticulumVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
extracellular exosomeVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
neuronal dense core vesicleVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
voltage-gated calcium channel complexVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
L-type voltage-gated calcium channel complexVoltage-dependent calcium channel subunit alpha-2/delta-1Homo sapiens (human)
plasma membraneCanalicular multispecific organic anion transporter 1Homo sapiens (human)
cell surfaceCanalicular multispecific organic anion transporter 1Homo sapiens (human)
apical plasma membraneCanalicular multispecific organic anion transporter 1Homo sapiens (human)
intercellular canaliculusCanalicular multispecific organic anion transporter 1Homo sapiens (human)
apical plasma membraneCanalicular multispecific organic anion transporter 1Homo sapiens (human)
plasma membraneVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
voltage-gated calcium channel complexVoltage-dependent calcium channel subunit alpha-2/delta-2Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Bioassays (170)

Assay IDTitleYearJournalArticle
AID598759Inhibition of Voltage-dependent calcium channel subunit alpha-2/delta2011Bioorganic & medicinal chemistry letters, Jun-15, Volume: 21, Issue:12
Part 3: Design and synthesis of proline-derived α2δ ligands.
AID719113Toxicity against mouse assessed as protection against maximal-electroshock-induced tonic seizure at 15 mg/kg2012Bioorganic & medicinal chemistry letters, Dec-15, Volume: 22, Issue:24
(R)- and (S)-4-Amino-3-(trimethylsilyl)methylbutanoic acids ameliorate neuropathic pain without central nervous system-related side effects.
AID1496106Analgesic activity in db/db mouse mechanical hyperalgesia model assessed as reversal of mechanical hyperalgesia at 100 mg/kg, po pretreated for 2 hrs by Von Frey test relative to control2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID412174Displacement of [3H]gabapentin from alpha2-delta subunit of voltage gated calcium channel in pig brain membrane2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID1682452Analgesic activity in rat model of sciatic nerve ligation-induced neuropathic pain assessed as reversal of hyperalgesia at 10 mg/kg, po by paw pressure test2020Bioorganic & medicinal chemistry letters, 12-15, Volume: 30, Issue:24
Pyrrolinone derivatives as a new class of P2X3 receptor antagonists. Part 3: Structure-activity relationships of pyrropyrazolone derivatives.
AID591494Antihyperalgesic activity against thermal hyperalgesia in saline treated rat diabetic neuropathy model assessed as licking latency time at 30 mg/kg, po after 45 mins by hot plate test (Rvb = 17.8 +/- 1.5 sec)2011Journal of medicinal chemistry, Apr-14, Volume: 54, Issue:7
Synthesis and biological evaluation of 3,7-diazabicyclo[4.3.0]nonan-8-ones as potential nootropic and analgesic drugs.
AID625292Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) combined score2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID591502Antihyperalgesic activity against thermal hyperalgesia in saline treated rat diabetic neuropathy model assessed as licking latency time at 30 mg/kg, po after 60 mins by hot plate test (Rvb = 18.4 +/- 1.6 sec)2011Journal of medicinal chemistry, Apr-14, Volume: 54, Issue:7
Synthesis and biological evaluation of 3,7-diazabicyclo[4.3.0]nonan-8-ones as potential nootropic and analgesic drugs.
AID625290Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for liver fatty2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID252209Brain levels 2 hours after peroral dosing of 30 mg/kg in rats was determined2005Journal of medicinal chemistry, Apr-21, Volume: 48, Issue:8
Novel cyclopropyl beta-amino acid analogues of pregabalin and gabapentin that target the alpha2-delta protein.
AID412185AUC in rat2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID267891Protection of DBA/2 mouse against audiogenic-induced tonic seizure at 30 mg/kg, po after 1 hr2006Bioorganic & medicinal chemistry letters, Jul-01, Volume: 16, Issue:13
Carboxylate bioisosteres of pregabalin.
AID267892Protection of DBA/2 mouse against audiogenic-induced tonic seizure at 30 mg/kg, po after 2 hrs2006Bioorganic & medicinal chemistry letters, Jul-01, Volume: 16, Issue:13
Carboxylate bioisosteres of pregabalin.
AID625283Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for elevated liver function tests2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625287Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for hepatomegaly2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID412177Anxiolytic activity in DBA/2 mouse assessed as restoration of punished drinking behavior at 30 mg/kg, po relative to pregabalin2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID454488Displacement of [3H]gabapentin from calcium channel alpha2delta in pig cerebral cortex membrane after 30 mins2010Bioorganic & medicinal chemistry letters, Jan-01, Volume: 20, Issue:1
Synthesis and in vivo evaluation of 3-substituted gababutins.
AID719121Antiallodynic activity in CD rat SNL pain model assessed as increase in paw withdrawal threshold at 20 mg/kg, po measured from 30 to 180 mins2012Bioorganic & medicinal chemistry letters, Dec-15, Volume: 22, Issue:24
(R)- and (S)-4-Amino-3-(trimethylsilyl)methylbutanoic acids ameliorate neuropathic pain without central nervous system-related side effects.
AID779483Inhibition of oxaliplatin-induced peripheral neuropathic pain in acetone spray-induced cold allodynia C57/BL6 mouse model assessed as inhibition of nocifensive paw licking behavior at 10 mg/kg, po2013Bioorganic & medicinal chemistry, Nov-01, Volume: 21, Issue:21
Synthesis and pharmacological evaluation of novel N-aryl-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidine]-1'-carboxamides as TRPM8 antagonists.
AID625285Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for hepatic necrosis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID1473740Inhibition of human MRP3 overexpressed in Sf9 insect cell membrane vesicles assessed as uptake of [3H]-estradiol-17beta-D-glucuronide in presence of ATP and GSH measured after 10 mins by membrane vesicle transport assay2013Toxicological sciences : an official journal of the Society of Toxicology, Nov, Volume: 136, Issue:1
A multifactorial approach to hepatobiliary transporter assessment enables improved therapeutic compound development.
AID189469Antiallodynic effect investigated in chronic sciatic nerve constriction injury rats before 1 hr of 60 mg/kg i.p. administration and value reported as paw withdrawal threshold2004Bioorganic & medicinal chemistry letters, May-17, Volume: 14, Issue:10
Effect of gabapentin derivates on mechanical allodynia-like behaviour in a rat model of chronic sciatic constriction injury.
AID267890Binding affinity to alpha-2delta calcium channel2006Bioorganic & medicinal chemistry letters, Jul-01, Volume: 16, Issue:13
Carboxylate bioisosteres of pregabalin.
AID1178517Antinociceptive activity in spinal nerve ligation CD rat model of neuropathic pain assessed as inhibition of mechanical allodynia measured as paw withdrawal threshold at 39 mg/kg, po up to 15 mins2014Bioorganic & medicinal chemistry letters, Jul-15, Volume: 24, Issue:14
DDD-028: a potent potential non-opioid, non-cannabinoid analgesic for neuropathic and inflammatory pain.
AID977599Inhibition of sodium fluorescein uptake in OATP1B1-transfected CHO cells at an equimolar substrate-inhibitor concentration of 10 uM2013Molecular pharmacology, Jun, Volume: 83, Issue:6
Structure-based identification of OATP1B1/3 inhibitors.
AID1158690Analgesic activity in po dosed Sprague-Dawley rat Chung spinal nerve ligation model assessed as reversal of mechanical hypersensitivity relative to control2014Journal of medicinal chemistry, Jul-10, Volume: 57, Issue:13
Maximizing diversity from a kinase screen: identification of novel and selective pan-Trk inhibitors for chronic pain.
AID591503Antihyperalgesic activity against streptozotocin-induced thermal hyperalgesia in rat diabetic neuropathy model assessed as licking latency time at 30 mg/kg, po after 60 mins by hot plate test (Rvb = 10.4 +/- 1.2 sec)2011Journal of medicinal chemistry, Apr-14, Volume: 54, Issue:7
Synthesis and biological evaluation of 3,7-diazabicyclo[4.3.0]nonan-8-ones as potential nootropic and analgesic drugs.
AID701147Antihyperalgesic activity in CD1 mouse partial sciatic nerve ligation model assessed as inhibition of thermal hyperalgesia at 16 to 64 mg/kg, ip administered 45 mins by plantar test2012Journal of medicinal chemistry, Oct-11, Volume: 55, Issue:19
Synthesis and biological evaluation of the 1-arylpyrazole class of σ(1) receptor antagonists: identification of 4-{2-[5-methyl-1-(naphthalen-2-yl)-1H-pyrazol-3-yloxy]ethyl}morpholine (S1RA, E-52862).
AID719119Antiallodynic activity in CD rat SNL pain model assessed as increase in paw withdrawal threshold at 20 mg/kg, po measured at 90 mins2012Bioorganic & medicinal chemistry letters, Dec-15, Volume: 22, Issue:24
(R)- and (S)-4-Amino-3-(trimethylsilyl)methylbutanoic acids ameliorate neuropathic pain without central nervous system-related side effects.
AID1180195Analgesic activity in rat Bennett model for neuropathic pain at 100 mg/kg, po2014Bioorganic & medicinal chemistry letters, Aug-15, Volume: 24, Issue:16
2-Alkyl/alkenyl substituted pyridine C-region analogues of 2-(3-fluoro-4-methylsulfonylaminophenyl)propanamides as highly potent TRPV1 antagonists.
AID249978The ability of 30 mg/kg oral dose of compound to restore punished drinking behavior in rats expressed as percent reference activity (PRA)2005Journal of medicinal chemistry, Apr-07, Volume: 48, Issue:7
Structure-activity relationships of pregabalin and analogues that target the alpha(2)-delta protein.
AID454492Analgesic activity in po dosed rat assessed as increase in number shocks received for 10 mins2010Bioorganic & medicinal chemistry letters, Jan-01, Volume: 20, Issue:1
Synthesis and in vivo evaluation of 3-substituted gababutins.
AID1542807Anti-nociceptive activity in Sprague-Dawley rat assessed as reduction in total time spent licking injected paw during delayed phase (15 to 45 mins) at 40 mg/kg, po dosed 1 hr before formalin injection2019Bioorganic & medicinal chemistry letters, 06-15, Volume: 29, Issue:12
Synthesis and evaluation of histamine H
AID1766518Inhibition of recombinant CYP3A4 (unknown origin) using BFC as substrate at 1 uM measured after 30 mins in presence of NADPH generating system by fluorescence assay relative to control2021ACS medicinal chemistry letters, Nov-11, Volume: 12, Issue:11
Piperazinyl Bicyclic Derivatives as Selective Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels.
AID1496105Displacement of [3H]gabapentin from human voltage-gated Ca2+ channel alpha2delta1 subunit expressed in HEK293A cell membranes after 30 mins by liquid scintillation counting method2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID412175Displacement of [3H]leucine from Large neutral amino acids transporter system L in CHO cells2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID1363935Decrease in KCl-induced exocytotic release of [3H]GABA in Wistar rat synaptosomes at 100 uM preincubated for 20 mins followed by Kcl addition in Ca2+ containing media measured after 5 mins
AID1744121Inhibition of human ACMSD assessed as QUIN level at 1 mM by HPLC analysis (Rvb = 16.4 +/- 2.9%)2021Journal of medicinal chemistry, 01-14, Volume: 64, Issue:1
Diflunisal Derivatives as Modulators of ACMS Decarboxylase Targeting the Tryptophan-Kynurenine Pathway.
AID239675Equilibrium dissociation constant for Voltage-gated calcium channel alpha2-delta subunit as inhibition of [3H]gabapentin binding to pig brain membranes2005Journal of medicinal chemistry, Apr-21, Volume: 48, Issue:8
Novel cyclopropyl beta-amino acid analogues of pregabalin and gabapentin that target the alpha2-delta protein.
AID1421718Antiallodynic activity in Wistar rat assessed as reduction in oxaliplatin-induced neuropathic pain in late phase by measuring paw withdrawal force at 5 to 10 mg/kg, ip measured after 60 mins by Von Frey test2018European journal of medicinal chemistry, Oct-05, Volume: 158Novel amide derivatives of 1,3-dimethyl-2,6-dioxopurin-7-yl-alkylcarboxylic acids as multifunctional TRPA1 antagonists and PDE4/7 inhibitors: A new approach for the treatment of pain.
AID412182Bioavailability in rat2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID625291Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for liver function tests abnormal2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID263823Inhibition of [3H]leucine uptake at System L in CHO cells2006Bioorganic & medicinal chemistry letters, May-01, Volume: 16, Issue:9
Heteroaromatic side-chain analogs of pregabalin.
AID735854Antiallodynic activity against capsaicin-induced secondary mechanical pain in CD-1 mouse assessed as paw withdrawal-latency at 64 mg/kg, sc measured after 30 mins post compound administration2013Journal of natural products, Apr-26, Volume: 76, Issue:4
Antiallodynic and analgesic effects of maslinic acid, a pentacyclic triterpenoid from Olea europaea.
AID1777969Antiallodynic activity in hyperglycemic Swiss Webster mouse model of neuropathic pain assessed as reversal of carrageenan-induced tactile allodynia at 30 ug/paw, it and measured after 6 hrs
AID1411515Antipain activity in tibial nerve transection surgery model of rat assessed as reduction of noxious pinch evoked activity at 9 to 18 mg/kg administered as iv bolus dose measured every 15 mins for 30 mins2017MedChemComm, Jun-01, Volume: 8, Issue:6
The discovery of a potent Na
AID591495Antihyperalgesic activity against streptozotocin-induced thermal hyperalgesia in rat diabetic neuropathy model assessed as licking latency time at 30 mg/kg, po after 45 mins by hot plate test (Rvb = 9.3 +/- 1.2 sec)2011Journal of medicinal chemistry, Apr-14, Volume: 54, Issue:7
Synthesis and biological evaluation of 3,7-diazabicyclo[4.3.0]nonan-8-ones as potential nootropic and analgesic drugs.
AID1363938Effect on ambient level of L-[3H]glutamate in Wistar rat synaptosomes assessed as L-[3H]glutamate level at 100 uM preincubated for 20 mins (Rvb = 24.68 +/- 1.49%)
AID1235126Increase in [3H]GABA uptake initial velocity in Wistar rat synaptosomes measured per mg of protein at 100 uM by scintillation counting (Rvb = 205.4 +/- 5 pmol/min*mg of protein)2015Bioorganic & medicinal chemistry, Aug-01, Volume: 23, Issue:15
Synthesis of new fluorinated analogs of GABA, Pregabalin bioisosteres, and their effects on [(3)H]GABA uptake by rat brain nerve terminals.
AID1744122Inhibition of human ACMSD assessed as picolinic acid level at 1 mM by HPLC analysis (Rvb = 83.6 +/- 3.1%)2021Journal of medicinal chemistry, 01-14, Volume: 64, Issue:1
Diflunisal Derivatives as Modulators of ACMS Decarboxylase Targeting the Tryptophan-Kynurenine Pathway.
AID477062Inhibition of [3H]gabapentin binding to voltage gated calcium channel alpha2delta from rat cerebral cortex at 10 uM by scintillation counting2010European journal of medicinal chemistry, Apr, Volume: 45, Issue:4
Synthesis, characterization and in vitro pharmacology of novel pregabalin derivatives.
AID1473738Inhibition of human BSEP overexpressed in Sf9 cell membrane vesicles assessed as uptake of [3H]-taurocholate in presence of ATP measured after 15 to 20 mins by membrane vesicle transport assay2013Toxicological sciences : an official journal of the Society of Toxicology, Nov, Volume: 136, Issue:1
A multifactorial approach to hepatobiliary transporter assessment enables improved therapeutic compound development.
AID1178518Antinociceptive activity in spinal nerve ligation CD rat model of neuropathic pain assessed as inhibition of mechanical allodynia measured as time required for maximal effect at 39 mg/kg, po2014Bioorganic & medicinal chemistry letters, Jul-15, Volume: 24, Issue:14
DDD-028: a potent potential non-opioid, non-cannabinoid analgesic for neuropathic and inflammatory pain.
AID1363933Effect on ambient level of [3H]GABA in Wistar rat synaptosomes assessed as [3H]GABA level at 100 uM preincubated for 20 mins (Rvb = 14.20 +/- 1.03%)
AID1561392Analgesic activity in mouse model of spared nerve injury assessed as reduction in cold hyperalgesia at 30 mg/kg, ip measured at 7 days interval for up to 21 days post spared nerve injury by cold plantar test2020Journal of medicinal chemistry, 04-09, Volume: 63, Issue:7
TREK Channel Family Activator with a Well-Defined Structure-Activation Relationship for Pain and Neurogenic Inflammation.
AID1474167Liver toxicity in human assessed as induction of drug-induced liver injury by measuring verified drug-induced liver injury concern status2016Drug discovery today, Apr, Volume: 21, Issue:4
DILIrank: the largest reference drug list ranked by the risk for developing drug-induced liver injury in humans.
AID1496115Effect on motor coordination in mouse at 30 mg/kg, po measured over 120 secs at 2 hrs post drug administration by rota rod test2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID598762Displacement of [3H]gabapentin from voltage gated calcium channel alpha2delta from pig cerebral cortex by scintillation counting2011Bioorganic & medicinal chemistry letters, Jun-15, Volume: 21, Issue:12
Part 2: Design, synthesis and evaluation of hydroxyproline-derived α2δ ligands.
AID735849Neurotoxicity in CD-1 mouse assessed as impairment in motor coordination at 64 mg/kg, sc measured up to 3 hrs by rotarod test2013Journal of natural products, Apr-26, Volume: 76, Issue:4
Antiallodynic and analgesic effects of maslinic acid, a pentacyclic triterpenoid from Olea europaea.
AID1766543Analgesic activity in CD1 mouse model of capsaicin-induced mechanical hypersensitivity assessed as reduction in mechanical hypersensitivity at 20 mg/kg, ip administered 30 mins prior to capsaicin stimulation and measured after 15 mins2021ACS medicinal chemistry letters, Nov-11, Volume: 12, Issue:11
Piperazinyl Bicyclic Derivatives as Selective Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels.
AID710667Antinociceptive activity in rat assessed as reversal of complete Freund's adjuvant-induced pain at 10 mg/kg, po after 3 hrs2012Journal of medicinal chemistry, Nov-26, Volume: 55, Issue:22
Aminopiperidine sulfonamide Cav2.2 channel inhibitors for the treatment of chronic pain.
AID1411522Antipain activity in tibial nerve transection surgery model of rat assessed as reduction of heat evoked activity at 9 to 18 mg/kg administered as iv bolus dose measured every 15 mins for 30 mins2017MedChemComm, Jun-01, Volume: 8, Issue:6
The discovery of a potent Na
AID625282Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for cirrhosis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID1363936Induction of plasma membrane depolarization in Wistar rat synaptosomes at 100 uM by rhodamine 6G based spectrofluorimeteric method
AID189468Antiallodynic effect investigated in chronic sciatic nerve constriction injury rats after 1 hr of 60 mg/kg i.p. administration and value reported as paw withdrawal threshold2004Bioorganic & medicinal chemistry letters, May-17, Volume: 14, Issue:10
Effect of gabapentin derivates on mechanical allodynia-like behaviour in a rat model of chronic sciatic constriction injury.
AID1235128Increase in [3H]GABA uptake initial velocity in Wistar rat synaptosomes measured per mg of protein pretreated at 100 uM for 20 mins by scintillation counting (Rvb = 153 +/- 7.7 pmol/min*mg of protein)2015Bioorganic & medicinal chemistry, Aug-01, Volume: 23, Issue:15
Synthesis of new fluorinated analogs of GABA, Pregabalin bioisosteres, and their effects on [(3)H]GABA uptake by rat brain nerve terminals.
AID1473739Inhibition of human MRP2 overexpressed in Sf9 cell membrane vesicles assessed as uptake of [3H]-estradiol-17beta-D-glucuronide in presence of ATP and GSH measured after 20 mins by membrane vesicle transport assay2013Toxicological sciences : an official journal of the Society of Toxicology, Nov, Volume: 136, Issue:1
A multifactorial approach to hepatobiliary transporter assessment enables improved therapeutic compound development.
AID1411521Antipain activity in tibial nerve transection surgery model of rat assessed as reduction of mechanical punctate stimuli evoked activity at 9 to 18 mg/kg administered as iv bolus dose measured every 15 mins for 30 mins2017MedChemComm, Jun-01, Volume: 8, Issue:6
The discovery of a potent Na
AID412180Ratio of drug level in brain to plasma of Sprague-Dawley rat2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID1496111Oral bioavailability in mouse at 10 mg/kg2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID1496108Half life in mouse at 10 mg/kg, po or 5 mg/kg, iv2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID1474166Liver toxicity in human assessed as induction of drug-induced liver injury by measuring severity class index2016Drug discovery today, Apr, Volume: 21, Issue:4
DILIrank: the largest reference drug list ranked by the risk for developing drug-induced liver injury in humans.
AID412179Plasma concentration in Sprague-Dawley rat at 30 mg/kg, po after 2 hrs2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID242017Inhibition of [3H]gabapentin binding to pig brain membranes2005Journal of medicinal chemistry, Apr-07, Volume: 48, Issue:7
Structure-activity relationships of pregabalin and analogues that target the alpha(2)-delta protein.
AID779489Inhibition of icilin-induced wet dog shakes in C57/BL6 mouse at 30 mg/kg, po administered 60 mins prior to icilin-challenge measured for 30 mins2013Bioorganic & medicinal chemistry, Nov-01, Volume: 21, Issue:21
Synthesis and pharmacological evaluation of novel N-aryl-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidine]-1'-carboxamides as TRPM8 antagonists.
AID591456Antihyperalgesic activity against thermal hyperalgesia in saline treated rat diabetic neuropathy model assessed as licking latency time at 30 mg/kg, po after 15 mins by hot plate test (Rvb = 18.1 +/- 1.1 sec)2011Journal of medicinal chemistry, Apr-14, Volume: 54, Issue:7
Synthesis and biological evaluation of 3,7-diazabicyclo[4.3.0]nonan-8-ones as potential nootropic and analgesic drugs.
AID248174Inhibition of [3H]leucine uptake by L-amino acid transporter system in rats2005Journal of medicinal chemistry, Apr-21, Volume: 48, Issue:8
Novel cyclopropyl beta-amino acid analogues of pregabalin and gabapentin that target the alpha2-delta protein.
AID598559Displacement of [3H]Gabapentin from alpha2delta calcium channel in pig brain tissue homogenates after 45 mins by scintillation counting2011Bioorganic & medicinal chemistry letters, Jun-15, Volume: 21, Issue:12
Part 1: N-alkylated glycines as potent α2δ ligands.
AID1626228Toxicity in Kun Ming mouse assessed as decrease in rotarod latency at 40 mg/kg, ip measured after 60 to 120 mins by rotarod test relative to vehicle-treated control2016Journal of medicinal chemistry, 07-14, Volume: 59, Issue:13
Development of Novel Alkoxyisoxazoles as Sigma-1 Receptor Antagonists with Antinociceptive Efficacy.
AID591465Antihyperalgesic activity against streptozotocin-induced thermal hyperalgesia in rat diabetic neuropathy model assessed as licking latency time at 30 mg/kg, po after 30 mins by hot plate test (Rvb = 10.1 +/- 0.8 sec)2011Journal of medicinal chemistry, Apr-14, Volume: 54, Issue:7
Synthesis and biological evaluation of 3,7-diazabicyclo[4.3.0]nonan-8-ones as potential nootropic and analgesic drugs.
AID1709032Displacement of [3H]-gabapentin from human Cav alpha2delta1 expressed in CHO-K1 cell membranes incubated for 60 mins by scintillation counting method2021Journal of medicinal chemistry, 02-25, Volume: 64, Issue:4
Bicyclic Diazepinones as Dual Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels and the Norepinephrine Transporter.
AID263825Anticonvulsant activity against DBA/2 mouse at 30 mg/kg, po 2 hrs post dose2006Bioorganic & medicinal chemistry letters, May-01, Volume: 16, Issue:9
Heteroaromatic side-chain analogs of pregabalin.
AID242165Inhibition of [3H]leucine uptake into CHO cells by L-amino acid transporters2005Journal of medicinal chemistry, Apr-07, Volume: 48, Issue:7
Structure-activity relationships of pregabalin and analogues that target the alpha(2)-delta protein.
AID1496109AUC in mouse at 10 mg/kg, po or 5 mg/kg, iv2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID1496112Analgesic activity in STZ-induced diabetic rat model assessed as pain threshold AUC (0 to 8 hrs) at 10 mg/kg, po by Von Frey test2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID252319Plasma levels 2 hours after peroral dosing of 30 mg/kg in rats was determined2005Journal of medicinal chemistry, Apr-21, Volume: 48, Issue:8
Novel cyclopropyl beta-amino acid analogues of pregabalin and gabapentin that target the alpha2-delta protein.
AID412184Half life in rat plasma2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID1496107Cmax in mouse at 10 mg/kg, po or 5 mg/kg, iv2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID1766546Induction of motor coordination impairment in CD1 mouse assessed as latency to fall at 20 mg/kg, ip measured upto 180 mins by rotarod test2021ACS medicinal chemistry letters, Nov-11, Volume: 12, Issue:11
Piperazinyl Bicyclic Derivatives as Selective Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels.
AID1363937Induction of plasma membrane hyperpolarization in Wistar rat synaptosomes at 100 uM by rhodamine 6G based spectrofluorimeteric method
AID1363934Effect on ambient level of [3H]GABA in Wistar rat synaptosomes assessed as [3H]GABA level at 100 uM preincubated for 20 mins in presence of GAT1 specific blocker NO-711 (Rvb = 25.07 +/- 2.1%)
AID412186Volume of distribution at steady state in rat2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID477702Displacement of [3H]gabapentin from Voltage-dependent calcium channel subunit alpha-2/delta in pig cerebral cortex by scintillation counting2010Bioorganic & medicinal chemistry letters, Jan-01, Volume: 20, Issue:1
Synthesis and in vivo evaluation of 3,4-disubstituted gababutins.
AID244699Ratio of brain level and plasma level 2 hours after peroral dosing of 30 mg/kg in rats was determined2005Journal of medicinal chemistry, Apr-21, Volume: 48, Issue:8
Novel cyclopropyl beta-amino acid analogues of pregabalin and gabapentin that target the alpha2-delta protein.
AID248057Inhibition of [3H]leucine uptake into CHO cells2005Journal of medicinal chemistry, Apr-21, Volume: 48, Issue:8
Novel cyclopropyl beta-amino acid analogues of pregabalin and gabapentin that target the alpha2-delta protein.
AID1199454Antagonist activity at P2X7 receptor in neuropathic rat dorsal horn assessed as inhibition of long term potentiation-induced neropathic pain at 20 uM relative to control2015Journal of medicinal chemistry, Mar-12, Volume: 58, Issue:5
Discovery of novel 2,5-dioxoimidazolidine-based P2X(7) receptor antagonists as constrained analogues of KN62.
AID263822Displacement of [3H]gabapentin from alpha-2delta calcium channel in pig brain membrane2006Bioorganic & medicinal chemistry letters, May-01, Volume: 16, Issue:9
Heteroaromatic side-chain analogs of pregabalin.
AID263824Anxiolytic effect in rat at 30 mg/kg, po by Vogel water lick conflict assay assessed by ability to reverse shock-induced suppression of drinking2006Bioorganic & medicinal chemistry letters, May-01, Volume: 16, Issue:9
Heteroaromatic side-chain analogs of pregabalin.
AID1233965Antallodynic effect in Sprague-Dawley rat tibial nerve transection-induced mechanical allodynia model assessed as 50% shift in paw withdrawal threshold in ipsilateral paw at 10 mg/kg, single dose after 1.5 hrs (Rvb = 1.7 +/- 0.2 g)2015ACS medicinal chemistry letters, Jun-11, Volume: 6, Issue:6
Discovery and Optimization of Selective Nav1.8 Modulator Series That Demonstrate Efficacy in Preclinical Models of Pain.
AID1421715Antiallodynic activity in Wistar rat assessed as reduction in oxaliplatin-induced neuropathic pain in early phase by measuring paw withdrawal force at 5 to 10 mg/kg, ip measured after 60 mins by Von Frey test2018European journal of medicinal chemistry, Oct-05, Volume: 158Novel amide derivatives of 1,3-dimethyl-2,6-dioxopurin-7-yl-alkylcarboxylic acids as multifunctional TRPA1 antagonists and PDE4/7 inhibitors: A new approach for the treatment of pain.
AID701146Neurotoxicity in CD1 mouse assessed as motor impairment at 32 to 64 mg/kg, ip measured after 30 to 180 mins by rotarod test2012Journal of medicinal chemistry, Oct-11, Volume: 55, Issue:19
Synthesis and biological evaluation of the 1-arylpyrazole class of σ(1) receptor antagonists: identification of 4-{2-[5-methyl-1-(naphthalen-2-yl)-1H-pyrazol-3-yloxy]ethyl}morpholine (S1RA, E-52862).
AID625288Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for jaundice2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID719112Toxicity against mouse assessed as protection against maximal-electroshock-induced tonic seizure at 45 mg/kg2012Bioorganic & medicinal chemistry letters, Dec-15, Volume: 22, Issue:24
(R)- and (S)-4-Amino-3-(trimethylsilyl)methylbutanoic acids ameliorate neuropathic pain without central nervous system-related side effects.
AID701148Antiallodynic activity in CD1 mouse partial sciatic nerve ligation model assessed as inhibition of mechanical allodynia at 16 to 64 mg/kg, ip administered 30 mins by von Frey test2012Journal of medicinal chemistry, Oct-11, Volume: 55, Issue:19
Synthesis and biological evaluation of the 1-arylpyrazole class of σ(1) receptor antagonists: identification of 4-{2-[5-methyl-1-(naphthalen-2-yl)-1H-pyrazol-3-yloxy]ethyl}morpholine (S1RA, E-52862).
AID625284Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for hepatic failure2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625280Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for cholecystitis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID625279Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for bilirubinemia2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID1496116Effect on motor coordination in mouse at 100 mg/kg, po measured over 120 secs at 2 hrs post drug administration by rota rod test2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID1235130Increase in [3H]GABA uptake initial velocity in Wistar rat synaptosomes measured per mg of protein pretreated at 100 uM for 20 mins with combined application of 30 uM NO-711 GAT1 blocker by scintillation counting2015Bioorganic & medicinal chemistry, Aug-01, Volume: 23, Issue:15
Synthesis of new fluorinated analogs of GABA, Pregabalin bioisosteres, and their effects on [(3)H]GABA uptake by rat brain nerve terminals.
AID625289Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for liver disease2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID1599711Antiallodynic activity in C57BL/6J mouse assessed as reduction in cuff-induced pain at 3 mg/kg, ip bid for 3 weeks administrated 2 weeks post cuff-insertion and measured after 15 days by Von Frey test2019European journal of medicinal chemistry, Sep-01, Volume: 177Design and synthesis of 3-aminophthalazine derivatives and structural analogues as PDE5 inhibitors: anti-allodynic effect against neuropathic pain in a mouse model.
AID625281Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for cholelithiasis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID1868465Analgesic activity in C57BL/6 mouse model of formalin-induced allodynia assessed as reduction on foot licking pain response at 20 mg/kg,po measured after 10 mins2022European journal of medicinal chemistry, Jul-05, Volume: 237Optimization of 4-arylthiophene-3-carboxylic acid derivatives as inhibitors of ANO1: Lead optimization studies toward their analgesic efficacy for inflammatory pain.
AID412178Drug level in Sprague-Dawley rat brain at 30 mg/kg, po after 2 hrs2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID625286Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effect (HepSE) score for hepatitis2011PLoS computational biology, Dec, Volume: 7, Issue:12
Translating clinical findings into knowledge in drug safety evaluation--drug induced liver injury prediction system (DILIps).
AID1777967Antiallodynic activity in hyperglycemic Swiss Webster mouse model of neuropathic pain assessed as reversal of carrageenan-induced tactile allodynia at 30 ug/paw local peripheral administration and measured after 6 hrs
AID412183Clearance in rat2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID719107Toxicity against rat assessed as somnolence at 30 mg/kg2012Bioorganic & medicinal chemistry letters, Dec-15, Volume: 22, Issue:24
(R)- and (S)-4-Amino-3-(trimethylsilyl)methylbutanoic acids ameliorate neuropathic pain without central nervous system-related side effects.
AID246002Inhibition of carrageenan-induced thermal hyperalgesia in rats 1 hr after administration of a 30 mg/kg dose of test compound2005Journal of medicinal chemistry, Apr-07, Volume: 48, Issue:7
Structure-activity relationships of pregabalin and analogues that target the alpha(2)-delta protein.
AID1473741Inhibition of human MRP4 overexpressed in Sf9 cell membrane vesicles assessed as uptake of [3H]-estradiol-17beta-D-glucuronide in presence of ATP and GSH measured after 20 mins by membrane vesicle transport assay2013Toxicological sciences : an official journal of the Society of Toxicology, Nov, Volume: 136, Issue:1
A multifactorial approach to hepatobiliary transporter assessment enables improved therapeutic compound development.
AID1709033Displacement of [3H]-gabapentin from human Cav alpha2delta2 expressed in HEK293 cell membranes incubated for 60 mins by scintillation counting method2021Journal of medicinal chemistry, 02-25, Volume: 64, Issue:4
Bicyclic Diazepinones as Dual Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels and the Norepinephrine Transporter.
AID779487Inhibition of oxaliplatin-induced peripheral neuropathic pain in acetone spray-induced cold allodynia C57/BL6 mouse model assessed as inhibition of nocifensive paw licking behavior at 30 mg/kg, po2013Bioorganic & medicinal chemistry, Nov-01, Volume: 21, Issue:21
Synthesis and pharmacological evaluation of novel N-aryl-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidine]-1'-carboxamides as TRPM8 antagonists.
AID604877Analgesic activity in rat assessed as reversal of complete Freund's adjuvant-induced hypersensitivity at 10 mg/kg2010Bioorganic & medicinal chemistry letters, Aug-01, Volume: 20, Issue:15
Pyrazolopyridazine alpha-2-delta-1 ligands for the treatment of neuropathic pain.
AID591464Antihyperalgesic activity against thermal hyperalgesia in saline treated rat diabetic neuropathy model assessed as licking latency time at 30 mg/kg, po after 30 mins by hot plate test (Rvb = 18 +/- 1.5 sec)2011Journal of medicinal chemistry, Apr-14, Volume: 54, Issue:7
Synthesis and biological evaluation of 3,7-diazabicyclo[4.3.0]nonan-8-ones as potential nootropic and analgesic drugs.
AID1766516Displacement of [3H]-gabapentin from human Cav alpha2delta1 expressed in CHO-K1 cell membranes incubated for 60 mins by scintillation counting method2021ACS medicinal chemistry letters, Nov-11, Volume: 12, Issue:11
Piperazinyl Bicyclic Derivatives as Selective Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels.
AID977602Inhibition of sodium fluorescein uptake in OATP1B3-transfected CHO cells at an equimolar substrate-inhibitor concentration of 10 uM2013Molecular pharmacology, Jun, Volume: 83, Issue:6
Structure-based identification of OATP1B1/3 inhibitors.
AID252186Percent protection of DBA/2 mice from audiogenically induced tonic seizures at a dose of 30 mg/kg of test compound2005Journal of medicinal chemistry, Apr-07, Volume: 48, Issue:7
Structure-activity relationships of pregabalin and analogues that target the alpha(2)-delta protein.
AID1426394Antiallodynic activity in mouse model of spared nerve injury-induced tactile allodynia assessed as tactile threshold at 30 mg/kg, po measured 90 mins post dose by Von Frey filament assay2017Journal of medicinal chemistry, 02-09, Volume: 60, Issue:3
The Discovery and Hit-to-Lead Optimization of Tricyclic Sulfonamides as Potent and Efficacious Potentiators of Glycine Receptors.
AID1411520Antipain activity in tibial nerve transection surgery model of rat assessed as reduction of innocuous brush evoked activity at 9 to 18 mg/kg administered as iv bolus dose measured every 15 mins for 30 mins2017MedChemComm, Jun-01, Volume: 8, Issue:6
The discovery of a potent Na
AID719111Toxicity against mouse assessed as protection against pentetrazole-induced death at 45 mg/kg2012Bioorganic & medicinal chemistry letters, Dec-15, Volume: 22, Issue:24
(R)- and (S)-4-Amino-3-(trimethylsilyl)methylbutanoic acids ameliorate neuropathic pain without central nervous system-related side effects.
AID1496110Clearance in mouse at 10 mg/kg, po or 5 mg/kg, iv2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID1496114Analgesic activity in STZ-induced diabetic rat model assessed as pain threshold AUC (0 to 8 hrs) at 30 mg/kg, po by Von Frey test2018Bioorganic & medicinal chemistry letters, 06-15, Volume: 28, Issue:11
Alkylsulfanyl analogs as potent α
AID591457Antihyperalgesic activity against streptozotocin-induced thermal hyperalgesia in rat diabetic neuropathy model assessed as licking latency time at 30 mg/kg, po after 15 mins by hot plate test (Rvb = 9.4 +/- 1.3 sec)2011Journal of medicinal chemistry, Apr-14, Volume: 54, Issue:7
Synthesis and biological evaluation of 3,7-diazabicyclo[4.3.0]nonan-8-ones as potential nootropic and analgesic drugs.
AID719115Toxicity against CD rat SNL pain model assessed as hypalgesic activity on the contralateral side of paw at 20 mg/kg, po at 90 mins relative to control2012Bioorganic & medicinal chemistry letters, Dec-15, Volume: 22, Issue:24
(R)- and (S)-4-Amino-3-(trimethylsilyl)methylbutanoic acids ameliorate neuropathic pain without central nervous system-related side effects.
AID1059215Antinociceptive activity in rat spinal dorsal horn assessed as inhibition of electrically-stimulated long term potentiation at 20 uM by Di-4-ANEPPS dye-based assay relative to control2013European journal of medicinal chemistry, , Volume: 70Design and synthesis of potent and selective P2X₃ receptor antagonists derived from PPADS as potential pain modulators.
AID1709034Displacement of [3H]-nisoxetine from human NET expressed in HEK293 cell membranes incubated for 60 mins by scintillation counting method2021Journal of medicinal chemistry, 02-25, Volume: 64, Issue:4
Bicyclic Diazepinones as Dual Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels and the Norepinephrine Transporter.
AID1542806Anti-nociceptive activity in Sprague-Dawley rat assessed as reduction in total time spent licking injected paw during early phase (0 to 5 mins) at 40 mg/kg, po dosed 1 hr before formalin injection2019Bioorganic & medicinal chemistry letters, 06-15, Volume: 29, Issue:12
Synthesis and evaluation of histamine H
AID1709035Inhibition of human NET expressed in HEK293 cells assessed as reduction in ASP+ uptake incubated for 20 mins before ASP+ addition and measured after 90 mins by scintillation counting method2021Journal of medicinal chemistry, 02-25, Volume: 64, Issue:4
Bicyclic Diazepinones as Dual Ligands of the α2δ-1 Subunit of Voltage-Gated Calcium Channels and the Norepinephrine Transporter.
AID412176Anticonvulsant activity in DBA/2 mouse assessed as protection from audiogenically-induced tonic seizures at 30 mg/kg, po after 1 hr2009Bioorganic & medicinal chemistry letters, Jan-01, Volume: 19, Issue:1
Oxadiazolone bioisosteres of pregabalin and gabapentin.
AID1159550Human Phosphogluconate dehydrogenase (6PGD) Inhibitor Screening2015Nature cell biology, Nov, Volume: 17, Issue:11
6-Phosphogluconate dehydrogenase links oxidative PPP, lipogenesis and tumour growth by inhibiting LKB1-AMPK signalling.
AID1347411qHTS to identify inhibitors of the type 1 interferon - major histocompatibility complex class I in skeletal muscle: primary screen against the NCATS Mechanism Interrogation Plate v5.0 (MIPE) Libary2020ACS chemical biology, 07-17, Volume: 15, Issue:7
High-Throughput Screening to Identify Inhibitors of the Type I Interferon-Major Histocompatibility Complex Class I Pathway in Skeletal Muscle.
AID1296008Cytotoxic Profiling of Annotated Libraries Using Quantitative High-Throughput Screening2020SLAS discovery : advancing life sciences R & D, 01, Volume: 25, Issue:1
Cytotoxic Profiling of Annotated and Diverse Chemical Libraries Using Quantitative High-Throughput Screening.
AID1346986P-glycoprotein substrates identified in KB-3-1 adenocarcinoma cell line, qHTS therapeutic library screen2019Molecular pharmacology, 11, Volume: 96, Issue:5
A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
AID1346987P-glycoprotein substrates identified in KB-8-5-11 adenocarcinoma cell line, qHTS therapeutic library screen2019Molecular pharmacology, 11, Volume: 96, Issue:5
A High-Throughput Screen of a Library of Therapeutics Identifies Cytotoxic Substrates of P-glycoprotein.
AID1347091qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347082qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lassa (LASV) Arenavirus: LASV Primary Screen - GLuc reporter signal2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1347107qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh30 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347095qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347101qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347083qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lassa (LASV) Arenavirus: Viability assay - alamar blue signal for LASV Primary Screen2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1347093qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347108qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347103qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1745845Primary qHTS for Inhibitors of ATXN expression
AID1347099qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347105qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347096qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for U-2 OS cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347154Primary screen GU AMC qHTS for Zika virus inhibitors2020Proceedings of the National Academy of Sciences of the United States of America, 12-08, Volume: 117, Issue:49
Therapeutic candidates for the Zika virus identified by a high-throughput screen for Zika protease inhibitors.
AID1347094qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347100qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1508630Primary qHTS for small molecule stabilizers of the endoplasmic reticulum resident proteome: Secreted ER Calcium Modulated Protein (SERCaMP) assay2021Cell reports, 04-27, Volume: 35, Issue:4
A target-agnostic screen identifies approved drugs to stabilize the endoplasmic reticulum-resident proteome.
AID1347098qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-SH cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347092qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347097qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347104qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347086qHTS for Inhibitors of the Functional Ribonucleoprotein Complex (vRNP) of Lymphocytic Choriomeningitis Arenaviruses (LCMV): LCMV Primary Screen - GLuc reporter signal2020Antiviral research, 01, Volume: 173A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity.
AID1347090qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347102qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347106qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for control Hh wild type fibroblast cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
AID1347089qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells2018Oncotarget, Jan-12, Volume: 9, Issue:4
Quantitative high-throughput phenotypic screening of pediatric cancer cell lines identifies multiple opportunities for drug repurposing.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (2,365)

TimeframeStudies, This Drug (%)All Drugs %
pre-19900 (0.00)18.7374
1990's10 (0.42)18.2507
2000's413 (17.46)29.6817
2010's1450 (61.31)24.3611
2020's492 (20.80)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials555 (22.03%)5.53%
Reviews455 (18.06%)6.00%
Case Studies297 (11.79%)4.05%
Observational32 (1.27%)0.25%
Other1,180 (46.84%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Clinical Trials (468)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
A 13-Week, Randomized, Double-Blind, Multicenter, Placebo-Controlled Study To Evaluate Efficacy And Safety Of Pregabalin In The Treatment Of Postherpetic Neuralgia [NCT00394901]Phase 3372 participants (Actual)Interventional2006-09-30Completed
PROSPECTIVE RANDOMIZED 12-WEEK CONTROLLED STUDY OF VISUAL FIELD CHANGE IN SUBJECTS WITH PARTIAL SEIZURES RECEIVING PREGABALIN OR PLACEBO [NCT00351611]Phase 4187 participants (Actual)Interventional2006-07-26Completed
A Double-Blind, Placebo-Controlled Cross-Over Study In Fibromyalgia Subjects To Examine Effects Of Pregabalin On Brain Response To Mechanical Pain As Assessed By Functional Magnetic Resonance Imaging, Proton Magnetic Resonance Spectroscopy And Subjective [NCT00760474]Phase 127 participants (Actual)Interventional2009-01-31Completed
The Effect of Pregabalin Premedication on Anaesthetic Requirements and Recovery Time After Knee Arthroscopy [NCT03926000]112 participants (Anticipated)Interventional2019-06-30Not yet recruiting
Pregabalin vs. Gabapentin on Reducing Opioid Usage in Trauma Patients [NCT04705480]Phase 4210 participants (Anticipated)Interventional2021-04-12Recruiting
Oral Pregabalin Versus Intravenous Hydrocortisone in Treatment of Postdural Puncture Headache After Spinal Anesthesia for Elective Cesarean Section [NCT03910088]Phase 430 participants (Actual)Interventional2019-04-20Completed
The Efficacy of Pregabalin as a Monotherapy Versus Combined Pregabalin and Milnacipran in the Management of Fibromyalgia. [NCT03905486]58 participants (Actual)Interventional2019-04-01Completed
A Phase 1, Open-Label, Randomized, Cross-Over Study to Evaluate the Effects of Multiple Doses of Erythromycin on the Pharmacokinetics of a Single Dose of Pregabalin Controlled Release in Healthy Subjects [NCT01342198]Phase 118 participants (Actual)Interventional2011-06-30Completed
An Open-Label, Extension Safety And Efficacy Trial Of Pregabalin In Subjects With Neuropathic Pain Associated With Human Immunodeficiency Virus (HIV) Neuropathy [NCT00264875]Phase 3220 participants (Actual)Interventional2006-02-28Completed
Mechanism-based Choice of Therapy for Neuropathic Pain: Can Treatments Success in Neuropathic Post-operative Pain be Coupled to Psychophysical Pain Modulation Profile? [NCT01359514]32 participants (Actual)Interventional2008-04-30Completed
Efficacy of Pregabalin in the Management of Chronic Uremic Pruritus [NCT01073501]Phase 436 participants (Anticipated)Interventional2010-04-30Not yet recruiting
Effects of Oxycodone Combined With Pregabalin on Chronic Postsurgical Pain in Spinal Surgery: a Randomized Control, Double-blinded, Factorial Design Trial [NCT05795478]264 participants (Anticipated)Interventional2023-04-15Not yet recruiting
An Open-Label, Multiple-Dose, Randomized, 2-Way Crossover Study In Healthy Volunteers To Determine The Steady-State Pharmacokinetics Of 660 Mg (2 X 330 Mg Tablets) Pregabalin Controlled Release Formulation Administered Following An Evening Meal Relative T [NCT01257516]Phase 118 participants (Actual)Interventional2011-02-28Completed
An Open-Label, Single-Dose, Randomized, Four-Way Crossover Study In Healthy Volunteers To Evaluate The Effects Of Caloric Content And Time Of Dosing On The Pharmacokinetics Of Pregabalin Controlled Release Formulation As Compared To The Immediate Release [NCT01291524]Phase 124 participants (Actual)Interventional2011-02-28Completed
Open-Labeled European Study To Support The Early Identification Of Patients With Chronic Neuropathic Low Back Pain In Primary Care And To Assess The Effectiveness And Tolerability Of Pregabalin In This Population [NCT01298466]Phase 40 participants (Actual)Interventional2012-02-29Withdrawn
Use of Oral Pregabalin as Preemptive Analgesia in Abdominal Hysterectomy: Evaluation of Postoperative Pain and Opioid Consumption [NCT04495374]Phase 458 participants (Actual)Interventional2019-09-02Terminated(stopped due to Due to an atypical health scenario caused by the COVID-19 pandemic)
The Effect of Preventional Drug Therapy on Pain Regulation Mechanisms Among Spinal Cord Injury Patients Who Have Yet to Develop Central Pain [NCT03748290]Phase 450 participants (Anticipated)Interventional2018-08-23Recruiting
Dexmedetomidine With or Without Pregabalin Premedication for Conscious Sedation During Cataract Surgery Under Topical Anesthesia. A Randomized Double-blind Placebo-controlled Trial. [NCT03735368]Phase 260 participants (Actual)Interventional2018-12-10Completed
Randomized, Double-blind, Parallel Group, Single-center, Placebo-controlled Study to Evaluate Efficacy and Safety of Analgesic Combo in Prevention and Treatment of Post-surgical Dental Pain in Healthy Subjects [NCT03652818]Phase 2115 participants (Actual)Interventional2018-06-15Completed
A Randomized, Placebo-Controlled Trial of the Efficacy and Safety of Pregabalin in the Treatment of Subjects With Peripheral Neuropathic Pain [NCT00219544]Phase 3158 participants (Actual)Interventional2005-11-30Completed
Sleep Structure in Neuropathic Pain Patients, Psychological Factors, Brain Connectivity, and the Effect of Pregabalin on Sleep and Pain [NCT06155916]40 participants (Anticipated)Interventional2022-11-22Recruiting
A Phase II, Placebo-controlled, Double-blind, Randomized Crossover Trial of Pregabalin for the Prophylaxis of Pegfilgrastim-induced Bone Pain [NCT03407430]Phase 211 participants (Actual)Interventional2016-01-27Terminated(stopped due to Low patient accrual)
Efficacy, Safety, Tolerability and Pharmacokinetics of Concomitant Administration of Tramadol With Duloxetine or Pregabalin: a Randomized Controlled Flexible-dose Study in Patients With Neuropathic Pain [NCT01116531]Phase 40 participants (Actual)Interventional2010-04-30Withdrawn
Fixed Versus Flexible Dosing of Pregabalin in Patients With Fibromyalgia [NCT01226667]Phase 4174 participants (Actual)Interventional2010-07-31Completed
Safety and Efficacy of Pre-emptive Tapentadol vs Pregabalin in Post Operative Pain Following Unilateral Total Knee Arthroplasty- A Randomised, Double Blind, Active Control, Clinical Trial [NCT03604354]Phase 495 participants (Actual)Interventional2018-08-01Completed
Mechanism-based Choice of Therapy: Can Treatments Success in Fibromyalgia Patients be Coupled to Psychophysical Pain Modulation Profile? [NCT01268631]150 participants (Anticipated)Interventional2011-01-31Not yet recruiting
An Open-Label, Single-Dose, Randomized, Four-Way Crossover Study In Healthy Volunteers To Investigate The Pharmacokinetics Of Pregabalin Controlled Release Formulation Administered At Lunch Following Various Caloric Intakes As Compared To The Immediate Re [NCT01270815]Phase 128 participants (Actual)Interventional2011-03-31Completed
Comparison of Analgesic Efficacy Among Pregabalin, Celecoxib, Pregabalin With Celecoxib and Placebo After Total Knee Arthroplasty Under Intrathecal Morphine [NCT01344213]Phase 4100 participants (Actual)Interventional2008-07-31Completed
Magnesium Oral Supplementation to Reduce Pain in Patients With Severe Peripheral Arterial Occlusive Disease: The MAG-PAPER Randomized Clinical Trial [NCT02455726]150 participants (Anticipated)Interventional2015-09-30Not yet recruiting
A Phase 2, Randomized, Double-Blind, Placebo- and Comparator-Controlled Trial to Evaluate the Safety and Efficacy of Combination of Pregabalin and Acetaminophen Compared to Acetaminophen and Placebo in Subjects Undergoing Bunionectomy [NCT04495283]Phase 287 participants (Actual)Interventional2020-07-28Completed
Combined Effect of Pregabalin and Oxycodone, and Lacosamide and Oxycodone, on Breathing: an Exploratory Study in Healthy Volunteers (The Polo Study) [NCT05598905]Phase 424 participants (Anticipated)Interventional2022-10-10Recruiting
A PHASE 3B MULTICENTER, DOUBLE-BLIND, RANDOMIZED WITHDRAWAL EFFICACY AND SAFETY STUDY OF PREGABALIN IN THE TREATMENT OF PATIENTS WITH INADEQUATELY TREATED PAINFUL DIABETIC PERIPHERAL NEUROPATHY [NCT01057693]Phase 3633 participants (Actual)Interventional2010-03-31Completed
A Randomized, Single-dose, Parallel-group Study to Evaluate the Pharmacokinetic Profiles of Two Formulation of Pregabalin in Healthy Volunteers Under Fasting Conditions [NCT03712475]Phase 428 participants (Actual)Interventional2018-01-19Completed
Comparison of Conventional Flexible Dose Regimen of Pregabalin and New Flexible Dose Regimen of Pregabalin Using Low Dose: A Randomized Controlled Trial [NCT03691038]10 participants (Actual)Interventional2018-10-10Terminated(stopped due to Participants couldn't be enrolled due to complain of frequent visit.)
Effect of Preemptive Pregabalin for Post-operative Pain Relief in Myringoplasty [NCT03603626]0 participants (Actual)Interventional2015-09-30Withdrawn(stopped due to the article is not a clinical trial but is a hospital based randomized comparative study. This was inadvertently uploaded.)
The Pharmacokinetics Of Pregabalin Controlled Release Formulation In Fed State Compared To The Controlled Release And Immediate Release Formulations In The Fasted State [NCT01321671]Phase 124 participants (Actual)Interventional2011-04-30Completed
An Interventional Randomized, Double-blind, Placebo and Active Comparator-controlled, Four-way Crossover Trial Investigating the Analgesic Properties of a Single Oral Dose of Lu AG06474 in Healthy Participants [NCT06077786]Phase 124 participants (Anticipated)Interventional2023-10-13Recruiting
A Prospective, Double-blind, Randomized Pilot Study Evaluating the Effects of Toradol and Lyrica Verses Placebo for Pain Control After Donor Nephrectomy (TORPEDO) [NCT03669081]Phase 264 participants (Actual)Interventional2016-09-20Completed
Pain Relief Following Arthroscopic Rotator Cuff Repair: Perioperative Pregabalin Administration Versus Interscalene Brachial Plexus Block. a Prospective, Randomized, Double Blinded, Multicenter Trial [NCT01359085]56 participants (Anticipated)Interventional2011-06-30Not yet recruiting
Pre- vs. Post-incisional Pregabalin for Postoperative Pain Attenuation and Analgesics Spare in Orthopedic Oncologic Patients: A Comparative, Randomized, Double Blind Study Protocol [NCT01359059]80 participants (Anticipated)Interventional2011-06-30Not yet recruiting
A Randomized, Open-label, 3-way Crossover Clinical Trial to Compare The Pharmacokinetics of A Pregabalin Controlled Release Tablet 300mg With Immediate Release Formulation and to Assess the Effect of High Fat Diet in Healthy Male Subjects [NCT02103686]Phase 130 participants (Actual)Interventional2012-11-30Completed
Perioperative Administration of Pregabalin for Pain After Septoplasty [NCT01370915]100 participants (Anticipated)Interventional2010-09-30Recruiting
Pregabalin Versus Dexmedetomidine for Delirium Prevention After Cardiac Surgery: A Randomized Double-Blind Trial [NCT05640479]Phase 460 participants (Anticipated)Interventional2022-12-15Recruiting
[NCT00852683]Phase 370 participants (Anticipated)Interventional2008-05-31Completed
An Open-Label, Multiple-Dose, Randomized, 3-Way Crossover Study In Healthy Volunteers To Determine The Steady-State Pharmacokinetics Of The 165 Mg And 330 Mg Dose Strengths Of Pregabalin Controlled Release Formulations Administered Following An Evening Me [NCT01202422]Phase 124 participants (Actual)Interventional2010-10-31Completed
A Multicenter, Randomized, Double-Blind, Placebo-Controlled Study of Pregabalin in Subjects With Generalized Anxiety Disorder (GAD) Switching From Benzodiazepine Therapy. [NCT00368745]Phase 3108 participants (Actual)Interventional2006-09-30Completed
An Open-Label, Single-Dose, Randomized, Four-Way Crossover Study In Healthy Volunteers To Investigate The Pharmacokinetics Of Pregabalin Controlled Release Formulation Administered Following Various Caloric Intakes As Compared To The Immediate Release For [NCT01080612]Phase 124 participants (Actual)Interventional2010-04-30Completed
A Randomized Placebo-Controlled Trial Of The Efficacy And Tolerability Of Flexibly Dosed Pregabalin In The Treatment Of Cancer-Induced Bone Pain [NCT00381095]Phase 4152 participants (Actual)Interventional2006-12-31Terminated(stopped due to See termination reason in detailed description.)
A Multicenter, Randomized, Double-blind Study on the Efficacy and Safety of Tongluo-Kaibi Tablet in the Treatment of Fibromyalgia Syndrome [NCT05933486]Phase 4150 participants (Anticipated)Interventional2023-09-30Not yet recruiting
Esketamine Combined With Pregabalin on Acute Postoperative Pain in Patients Undergoing Resection of Spinal Neoplasms. [NCT05096468]Phase 2/Phase 390 participants (Actual)Interventional2021-12-01Completed
The Effect of Oral Pregabalin on Epidural-induced Shivering and Epidural Characteristics in Gynecological Surgeries, a Prospective Randomized Double-blind Study [NCT03721432]77 participants (Actual)Interventional2018-05-20Completed
A Double-Blind, Placebo-Controlled, Enriched-Enrollment, Randomized Withdrawal Study to Evaluate an Optimal Methodology for Conducting Proof of Concept Trials in Patients With Chronic Neuropathic Pain Syndromes Using Pregabalin as a Test Drug [NCT00570310]Phase 1104 participants (Actual)Interventional2007-12-31Completed
Double Blind Placebo Controlled Randomized Clinical Trial of Pregabalin for Alcohol Dependence [NCT02205879]Phase 4100 participants (Actual)Interventional2013-01-31Completed
Effect of Orally Pregabalin Given Before Knee Joint Replacement on Reperfusion Injury Which Caused by Bandage [NCT03482544]Phase 454 participants (Actual)Interventional2018-10-10Completed
Multimodal Nonopioid Pain Protocol Following Shoulder Arthroplasty Surgery [NCT05488847]Phase 480 participants (Anticipated)Interventional2022-06-25Recruiting
Efficacy and Side Effect Profile of Varying Dose of Pregabalin for the Treatment of Acute Postoperative Pain Following Spinal Surgery [NCT05478382]Phase 4132 participants (Anticipated)Interventional2022-10-31Not yet recruiting
Evaluation of Pregabalin's Abuse Liability and Its Effects on Benzodiazepine Withdrawal Symptoms in Inpatients Undergoing Medically Assisted Benzodiazepine Withdrawal [NCT02423018]Phase 41 participants (Actual)Interventional2015-04-30Terminated(stopped due to Low enrollment.)
The Effect of Preoperative Oral Pregabalin and Intraoperative Fentanyl on Postoperative Analgesia in Diagnostic Laparoscopic Gynecologic Surgery: A Comparative Study [NCT05150795]Early Phase 180 participants (Anticipated)Interventional2022-01-01Recruiting
Comparison of Effectiveness of Opioid Only and Pregabalin add-on for the Treatment of Neuropathic Pain in Cervical Myelopathy Patients [NCT03618589]Phase 160 participants (Anticipated)Interventional2016-11-26Recruiting
Comparison of Oral Lamotrigine Versus Pregabalin for Control of Acute and Chronic Pain Following Modified Radical Mastectomy: Controlled Double-blind Study [NCT03419949]0 participants Expanded AccessAvailable
The Clinical Effect of Pregabalin on Neuropathic Pain in Central Sensitized Patients Who Are Treated With Duloxetine After Total Knee Arthroplasty: Randomized Controlled Trial. [NCT05254652]90 participants (Anticipated)Interventional2022-05-31Not yet recruiting
A Randomized, Open-label, Single Dose, Parallel Study to Evaluate the Pharmacokinetics Dose Proportionality of GLA5PR GLARS-NF1 Tablet in Healthy Male Volunteers [NCT02327000]Phase 140 participants (Actual)Interventional2014-10-31Completed
Effects of Pregabalin on Pain After Total Knee Arthroplasty: A Randomized, Controlled, Double-Blind Trial [NCT01333956]Phase 1/Phase 2120 participants (Actual)Interventional2011-05-31Completed
Peri-Operative Pregabalin for Reducing opIoid Consumption AfTer Cardiac surgEry: A Randomized Trial [NCT04517110]Phase 317 participants (Actual)Interventional2021-04-09Terminated(stopped due to The COVID-19 pandemic has reduced recruitment such that the study is no longer feasible)
Preemptive Analgesia in Total Knee Arthroplasty: Comparing the Effects of Single Dose Combined Celecoxib With Pregabaline and Repetition Dose Combined Celecoxib With Pregabaline (Double Blind Controlled Clinical Trial) [NCT03523832]Phase 230 participants (Actual)Interventional2015-07-01Completed
Radiofrequency Thoracic Sympathectomy for Chronic Postmastectomy Pain; Randomized Placebo Controlled Study [NCT03494426]70 participants (Actual)Interventional2018-04-01Completed
An Open-Label, Multi-Center, Add-On Study Of Pregabalin (LYRICA) In Subjects With Refractory Partial Seizures Who Have Completed Studies 1008-010, 1008-035, 1008-114 Or 1008-164 [NCT00372528]Phase 321 participants (Actual)Interventional2007-03-31Terminated(stopped due to This study was terminated on April 8, 2011 as Pfizer Canada could no longer supply study drug. No efficacy or safety concerns factored into this decision.)
A Double Blind, Double Dummy, Randomized, Placebo-controlled, 4 Period Cross-over Study To Examine The Effect Of Pf-06372865 On Evoked Pain Endpoints In Healthy Volunteers Using Pregabalin As A Positive Control [NCT02238717]Phase 120 participants (Actual)Interventional2014-09-30Completed
Symptom-Based Treatment for Neuropathic Pain in Spinal Cord Injured Patients, Randomized Clinical Trial [NCT02180880]Phase 463 participants (Actual)Interventional2012-11-30Completed
Unravelling the Local and Systemic Effects of Primary Surgery and Perioperative Use of Ketorolac and Pregabalin in Primary Breast Cancer Patients According to Adiposity [NCT06150898]Phase 2112 participants (Anticipated)Interventional2024-02-20Not yet recruiting
A Randomized, Multicenter, Double-blind, Placebo and Active-controlled, Cross-over Study of the Efficacy and Safety of BMS-954561 in Patients With Diabetic Peripheral Neuropathic Pain (DPNP) [NCT01314222]Phase 2178 participants (Actual)Interventional2011-03-31Completed
"A Randomized, Open-label, Multiple-dose, Parallel Study to Compare the Pharmacokinetics and to Evaluate Drug-Drug Interaction of CG-651 in Healthy Volunteers" [NCT05370716]Phase 147 participants (Actual)Interventional2019-11-11Completed
Pregabalin Versus Dexmedetomidine for Delirium Treatment After Coronary Artery Bypass Grafting: A Randomized Double-Blind Trial [NCT05640453]Phase 470 participants (Anticipated)Interventional2022-12-15Recruiting
Gabapentin vs. Pregabalin for Post Operative Pain in Lumbar Microdiscectomy: a Randomized Controlled Trial. [NCT02120703]Phase 378 participants (Actual)Interventional2011-02-28Completed
Effect of Pregabalin or Adductor Canal Block on Postoperative Analgesia After Arthroscopic Anterior Cruciate Ligament Reconstruction (ACL) [NCT03530280]51 participants (Actual)Interventional2018-06-01Completed
A Double Blind, Double Dummy, Randomized, Placebocontrolled, 5 Period Cross-over Study To Examine The Effect of Pf-06273340 On Evoked Pain Endpoints In Healthy Volunteers Using Pregabalin And Ibuprofen As Positive Controls [NCT02260947]Phase 120 participants (Actual)Interventional2014-10-31Completed
Pregabalin Premedication for Conscious Sedation for Flexible Bronchoscopy: A Randomized Double Blind Controlled Study [NCT03387644]70 participants (Actual)Interventional2015-04-15Completed
The Effect of the Combination of Pregabalin and Dexmedetomidine on the Management of Postoperative Pain in Patients Undergoing Total Knee Arthroplasty (TKA) or Total Hip Arthroplasty (THA) Under Spinal Anesthesia [NCT03512574]Phase 4150 participants (Actual)Interventional2018-01-02Completed
Pregabalin Versus Pulsed Radiofrequency Ablation of Dorsal Root Ganglion for Treatment of Chronic Post Thoracotomy Pain Syndrome [NCT03942796]30 participants (Actual)Interventional2018-01-01Completed
[NCT01122004]Phase 10 participants InterventionalRecruiting
A 10-Week, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study to Evaluate the Efficacy and Safety of Pregabalin (150 mg - 600 mg/Day) Using a Flexible, Optimized Dose Schedule in Subjects With Peripheral Neuropathic Pain [NCT00141219]Phase 3241 participants (Actual)Interventional2005-12-31Completed
An Open Label, Randomized Study Prospectively Examining the Effect on Anxiety in Partial Epilepsy Patients Treated With Pregabalin [NCT01128712]Phase 44 participants (Actual)Interventional2010-04-30Terminated(stopped due to lack of enrollment. terminated in 2014. no data analysis.)
A Randomized, Double-Blind, Placebo- and Active-Controlled Study of Carisbamate in the Treatment of Neuropathic Pain in Diabetic Peripheral Neuropathy Followed by a Blinded Extension Phase [NCT00870454]Phase 2386 participants (Actual)Interventional2009-05-31Completed
A Randomized, Active-controlled, Parallel, Open-label, Multicenter, Phase 4 Study to Compare the Efficacy and Safety of Pregabalin Sustained Release Tablet and Pregabalin Immediate Release Capsule in Type II Diabetic Patients With Peripheral Neuropathic P [NCT05624853]Phase 4130 participants (Actual)Interventional2020-05-12Completed
Pregabalin for the Treatment of Abdominal Pain From Adhesions: Placebo Controlled Trial [NCT00310765]Phase 418 participants (Actual)Interventional2006-03-31Terminated(stopped due to Study was terminated by the sponsor due to low accrual.)
A Phase 2, Randomized, Double-blind, Active-controlled, Dose-ranging, Parallel-design Study of the Efficacy and Safety of VX-548 in Subjects With Painful Diabetic Peripheral Neuropathy [NCT05660538]Phase 2192 participants (Actual)Interventional2022-12-20Completed
A Double-blind, Randomized, Cross-over, Feasibility Trial of Pregabalin for the Treatment of Recessive Dystrophic Epidermolysis Bullosa-associated Neuropathic Pain and Itch [NCT03928093]Phase 315 participants (Anticipated)Interventional2019-08-07Active, not recruiting
An Open-Label, Single-Dose, Randomized, Four-Way Crossover Study In Healthy Volunteers To Evaluate The Effects Of A Low, Medium And High Fat Evening Meal On The Pharmacokinetics Of Pregabalin Controlled Release Formulation As Compared To The Immediate Rel [NCT01257529]Phase 128 participants (Actual)Interventional2011-03-31Completed
A Phase 2 Study of the Effects of LY545694, an iGluR5 Antagonist, in the Treatment of Subjects With Painful Diabetic Neuropathy. [NCT00785577]Phase 2273 participants (Actual)Interventional2008-11-30Completed
Effect of Preoperative Pregabalin on Propofol Induction Dose [NCT01158859]Phase 450 participants (Anticipated)Interventional2010-04-30Completed
The Effect of Pregabalin and Dexamethasone on Acute and Chronic Pain After Lumbar Spinal Surgery [NCT01168531]108 participants (Actual)Interventional2009-12-31Completed
Use of Single Dose Pre-Operative Pregabalin for Post-Operative Analgesia in Bilateral Head and Neck Cancer Surgery: A Randomized, Double-Blinded, Placebo-Controlled Trial [NCT03714867]Phase 40 participants (Actual)Interventional2019-03-22Withdrawn(stopped due to Inability to recruit patients)
An Open-Label, Multiple-Dose, Randomized, 3-Way Crossover Study In Healthy Volunteers To Determine The Steady-State Pharmacokinetics Of The 82.5 Mg And 165 Mg Dose Strengths Of Pregabalin Controlled Release Formulations Administered Following An Evening M [NCT01220219]Phase 124 participants (Actual)Interventional2010-11-30Completed
Pharmacokinetic Non-interaction Study Between Pregabalin 150 mg and Tramadol 50 mg, Administered Individually or in Combination, Single Dose in Healthy Subjects of Both Genders Under Fasting Conditions [NCT05389150]Phase 130 participants (Actual)Interventional2019-01-17Completed
Preoperative Use of Pregabalin and Analgesia Levels After Laparoscopic Cholecystectomy [NCT01321801]50 participants (Actual)Interventional2009-11-30Completed
A Randomised, Double Blind, Placebo Controlled Study to Investigate the Pharmacodynamic Effects of IP2015 in Healthy Male Subjects Using the Intradermal Capsaicin Model [NCT05181852]Phase 124 participants (Anticipated)Interventional2022-01-05Not yet recruiting
An Open-Label, Multiple-Dose, Randomized, 2-Way Crossover Study In Healthy Volunteers To Determine The Steady-State Pharmacokinetics Of The 82.5 Mg Pregabalin Controlled Release Formulation Administered Following An Evening Meal Relative To The 25 Mg Of T [NCT01202435]Phase 118 participants (Actual)Interventional2010-10-31Completed
The Effects of Peri-operative Pregabalin Administration on Post-operative Analgesia in Patients Undergoing Coronary Bypass Grafting [NCT00623285]Phase 340 participants (Anticipated)Interventional2008-04-30Recruiting
A 6-month, Open-label, Safety Trial Of Pregabalin In Adolescent Patients With Fibromyalgia [NCT01020526]Phase 463 participants (Actual)Interventional2010-09-30Completed
A Placebo-Controlled Trial of Pregabalin (Lyrica) for Irritable Bowel Syndrome [NCT00977197]Phase 285 participants (Actual)Interventional2010-03-31Completed
A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Pregabalin-Referenced, Parallel-Group, Adaptive Design Study of DVS SR in Adult Female Outpatients With Fibromyalgia Syndrome [NCT00696787]Phase 2125 participants (Actual)Interventional2008-06-30Terminated
A Phase 1, Randomized, Double-Blind, Placebo-Controlled, Single and Multiple Ascending Dose Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Intravenous Pregabalin and Acetaminophen (Ofirmev®) in Healthy Volunteers [NCT04265456]Phase 163 participants (Actual)Interventional2020-01-14Completed
Chronic Pain Management After Herniorraphy:Pregabalin vs Placebo. A Double-blinded Randomised Controlled Clinical Trial. [NCT00772291]Phase 3140 participants (Anticipated)Interventional2007-05-31Completed
A Methodology Study to Assess the Ability of a Randomised, Double Blind, Placebo Controlled, Crossover Trial Design in Spinal Cord Injury Patients With Pain of Neuropathic Origin to Detect Improvement in Pain Endpoints Using Pregabalin as a Benchmark Comp [NCT00978341]15 participants (Actual)Interventional2007-02-28Terminated(stopped due to See Detailed Description)
Efficacy and Safety of Pregabalin in an Open-label, Non-comparative, Flexible-dose Trial With Diabetic Peripheral Neuropathy or Postherpetic Neuralgia [NCT00629681]Phase 4217 participants (Actual)Interventional2004-11-30Completed
Lumbar Stenosis Outcomes Research (LUSTOR)- A Randomized, Double-blind, Cross-over Trial of Pregabalin vs. Diphenhydramine in Patients With Lumbar Spinal Stenosis and Neuropathic Low Back Pain [NCT00638443]Phase 429 participants (Actual)Interventional2008-03-31Completed
Pregabalin (Lyrica) Action In Neuropathic Pain Syndrome (PAINS): A Post Marketing Surveillance Study On Efficacy, Safety And Tolerability Of Pregabalin [NCT00892008]2,278 participants (Actual)Observational2006-09-30Completed
Pregabalin Plus Lofexidine for the Outpatient Treatment of Opioid Withdrawal [NCT05995535]Phase 2150 participants (Anticipated)Interventional2024-01-01Not yet recruiting
Prophylactic Pregabalin to Decrease Pain During Medical Abortion: a Randomized Controlled Trial [NCT02782169]Phase 4110 participants (Actual)Interventional2015-06-30Completed
Bioequivalence Study of 150 mg Pregabalin Capsules Produced by PT Dexa Medica in Comparison With the Comparator Product (Lyrica® Capsule 150 mg, Pfizer Manufacturing Deutschland GmbH, Germany) [NCT02233777]20 participants (Actual)Interventional2014-06-30Completed
A Multicenter, Randomized, Double-Blind, Placebo and Active Controlled Study Comparing the Analgesic Efficacy and Safety of ABT-639 to Placebo in Subjects With Diabetic Neuropathic Pain [NCT01345045]Phase 2193 participants (Actual)Interventional2011-04-30Completed
Development of a Personalised Care Plan Designed to Reduce Chronic Post-Operative Pain Following Breast Surgery [NCT02170415]154 participants (Anticipated)Interventional2014-06-30Active, not recruiting
A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Multi-Center Trial of Pregabalin Versus Placebo in the Treatment of Neuropathic Pain Associated With HIV Neuropathy. [NCT00232141]Phase 3302 participants (Actual)Interventional2005-10-31Completed
Safety, Efficacy and Patient Acceptability of Topical Treatment Versus Systemic Treatment: a Randomized, Multicentre, Comparative Pragmatic Trial in Adult Patients Suffering From Diverse Localized Neuropathic Pain (LNP) Syndromes [NCT03348735]Phase 433 participants (Actual)Interventional2018-12-03Terminated(stopped due to Low inclusion rate)
A Phase 4 Multicenter, Open-Label, Pilot Study Of Pregabalin And Prediction Of Treatment Response In Patients With Postherpetic Neuralgia [NCT01603394]Phase 49 participants (Actual)Interventional2012-10-31Terminated(stopped due to See termination reason in detailed description.)
Pregabalin (Lyrica) for the Treatment of Restless Legs Syndrome [NCT00584246]Phase 40 participants (Actual)Interventional2007-11-30Withdrawn(stopped due to Study stopped due to budget (personnel) limitations.)
Exploratory Study on the Use of Pregabalin for the Treatment of Taxol Related Arthralgia-Myalgia [NCT02024568]Phase 238 participants (Anticipated)Interventional2013-12-31Not yet recruiting
the Effect of Adding Pregabalin on the Onset and the Duration of Spinal Anesthesia and on the Postoperative Analgesia [NCT05071118]Phase 470 participants (Actual)Interventional2021-03-21Completed
Investigation of Pregabalin Therapy and Complex Rehabilitation in Treating Chronic Fatigue Associated With Post-COVID Syndrome [NCT05967052]Phase 2132 participants (Anticipated)Interventional2023-10-24Recruiting
Effects of Preoperative Gabapentin Versus Pregabalin on Shoulder Pain After Laparoscopic Cholecystectomy. A Randomized Clinical Trial [NCT03241875]Phase 490 participants (Actual)Interventional2016-12-01Completed
A Multi-center, Randomized, Double-blind, Parallel, Active-controlled Phase III Clinical Trial to Evaluate the Efficacy and Safety of 'GLA5PR GLARS-NF1 Tab.' and 'Pregabalin' in Peripheral Neuropathic Pain [NCT03221907]Phase 3352 participants (Actual)Interventional2016-04-11Completed
A Randomized, Open-label, Crossover Clinical Trial to Compare The Pharmacokinetics of A Pregabalin Controlled Release Tablet 300mg and Immediate Release Formulation After Multiple Dosing Under Fasted Condition in Healthy Male Subjects [NCT02103647]Phase 124 participants (Actual)Interventional2013-05-31Completed
An Open Label Extension Safety Trial of Pregabalin (CI-1008) in Subjects With Diabetic Peripheral Neuropathy [NCT00159731]Phase 4160 participants Interventional2005-01-31Completed
Pregabalin in Partial Seizures (PREPS) Extension Study: An 18-month Follow-on Open-label, International, Multicenter Add-on Therapy Trial [NCT00143130]Phase 3227 participants (Actual)Interventional2005-04-30Completed
PROUD Study - Preventing Opioid Use Disorders [NCT04766996]Phase 457 participants (Actual)Interventional2021-05-17Terminated(stopped due to Loss of surgery team member deemed the study procedures impossible to achieve, and no replacement could be found in a timely manner to complete trial as initially planned.)
Preemptive Analgesia Combination of Celecoxib and Pregabalin in Total Hip Arthroplasty: Comparison of the Effects of Single Dose and Repeated Doses (Double-Blind Randomized Clinical Trial) [NCT05509946]Phase 2/Phase 330 participants (Anticipated)Interventional2022-10-01Not yet recruiting
The Impact of Pain on Behavioural Disturbances in Patients With Moderate and Severe Dementia. A Cluster Randomized Trial [NCT01021696]Phase 2/Phase 3352 participants (Actual)Interventional2009-11-30Completed
A Multicenter, Double-Blind Randomized, Placebo-Controlled Study Of The Efficacy And Safety Of Pregabalin In The Treatment Of Subjects With Post-Operative Pain Following Total Knee Arthroplasty (TKA) [NCT00442546]Phase 3307 participants (Actual)Interventional2007-05-31Completed
An Open-Label Extension Safety And Efficacy Study Of Pregabalin (CI-1008) For Pain Associated With Diabetic Peripheral Neuropathy [NCT00553280]Phase 3123 participants (Actual)Interventional2008-02-29Completed
A Phase 2, 26 Week, Multicentre, Randomized Double Blind, Placebo-Controlled, Crossover Study Evaluating the Efficacy and Safety of Tolterodine, Pregabalin and a Tolterodine-Pregabalin Combination for Idiopathic Overactive Bladder [NCT00746681]Phase 2188 participants (Actual)Interventional2005-12-31Completed
A LONG-TERM STUDY TO EVALUATE SAFETY AND EFFICACY STUDY OF PREGABALIN IN THE TREATMENT OF POSTHERPETIC NEURALGIA. [NCT00424372]Phase 3126 participants (Actual)Interventional2007-01-12Completed
A Randomized, Double-Blind, Placebo-Controlled, Parallel Group Clinical and Experimental Pilot Study of Pregabalin in Patients With Chronic Pancreatitis [NCT00755573]Phase 2/Phase 364 participants (Actual)Interventional2008-10-31Completed
Randomized, Double-Blind, 6-Week Study Of Pregabalin In Subjects With Restless Legs Syndrome [NCT00676403]Phase 2137 participants (Actual)Interventional2008-04-30Completed
A Multicenter Prospective Randomized Double-blind Placebo Controlled Trial Assessing the Effect of Perioperative Pregabalin on the Incidence of Chronic Post Thoracotomy Pain Syndrome [NCT00998816]Phase 30 participants (Actual)Interventional2012-05-31Withdrawn(stopped due to No funding)
Non-Interventional Study (NIS) With Lyrica In Patients With Epilepsy As Adjunctive Therapy Of Partial Seizures To Reduce Seizure Frequency [NCT00922987]286 participants (Actual)Observational2009-09-30Completed
A 17 Week, Investigator-initiated, Single-center, Double-blind, Randomized, Placebo-controlled, Cross-over Trial of Pregabalin in Essential Tremor [NCT00646451]Early Phase 120 participants (Actual)Interventional2006-06-30Completed
Pregabalin vs. Placebo as an Add on for Complex Regional Pain Syndrome of the Upper Limb Managed by Stellate Ganglion Block [NCT00891397]14 participants (Actual)Interventional2007-11-30Terminated(stopped due to Unable to recruit patients)
Neurologic Signatures of Chronic Pain Disorders [NCT02747940]Phase 4200 participants (Actual)Interventional2015-12-31Completed
Effects of Duloxetine on Pain Relief After Total Knee Arthroplasty in Central Sensitization Patient : A Randomized, Controlled, Double-Blind Trial [NCT02600247]100 participants (Anticipated)Interventional2015-11-30Not yet recruiting
An Open Label, Non-comparative, Multicentre Study to Evaluate the Efficacy and Tolerability of Pregabalin in Peripheral Neuropathic Pain [NCT00631943]Phase 3112 participants (Actual)Interventional2004-11-30Completed
Efficacy of Pregabalin in Patients With Radicular Pain [NCT00908375]Phase 439 participants (Actual)Interventional2009-05-31Completed
A Phase 1, Randomized, Open-label, Single-dose, 6-period Study To Investigate The Effect Of In Vitro Dissolution Rate On The In Vivo Bioavailability Of Extended Release Formulations Of Pregabalin In Healthy Volunteers [NCT02725112]Phase 125 participants (Actual)Interventional2016-02-12Completed
Phase II Study of Pregabalin for the Prevention of Chemotherapy Induced Nausea and Vomiting [NCT04181346]Phase 282 participants (Anticipated)Interventional2019-09-01Recruiting
Shifting Pain Modulation From Pro-to Anti-nociceptive: Individualized Prevention of Post Operative Pain [NCT02672202]9 participants (Actual)Interventional2016-02-29Terminated(stopped due to Recruitment rate was slow so we could not complete the study.)
Preemptive Analgesia With Pregabalin in Heart Surgery: a Randomized Clinical Trial [NCT04173390]Phase 2230 participants (Anticipated)Interventional2021-03-01Recruiting
A Randomized, Double-Blind, Placebo-Controlled, Parallel Group Study to Evaluate the Effect of Pregabalin and Naproxen Sodium on Postoperative Pain After Bunionectomy [NCT00601458]Phase 1100 participants (Actual)Interventional2007-07-31Completed
Pregabalin BID Add-on Trial: a Randomized, Double-Blind, Placebo-Controlled Parallel-Group Single-Center Sleep EEG Study in Patients With Partial Seizures and Sleep Disturbance Part B: a Randomized, Double-Blind, Placebo-Controlled Parallel-Group Study of [NCT00643136]Phase 317 participants (Actual)Interventional2002-11-30Completed
A Randomized Double-Blind Placebo and Active Controlled Parallel Group Study to Evaluate the Efficacy and Safety of DS-1971a for the Treatment of Diabetic Peripheral Neuropathic Pain (DPNP) [NCT02673866]Phase 20 participants (Actual)Interventional2016-02-29Withdrawn(stopped due to reassessment of phase 2 study indication)
The Effect of Pregabalin on Pain of Propofol Injection [NCT02668094]120 participants (Actual)Interventional2016-02-29Completed
Efficacy of Perioperative Pregabalin in Reducing the Incidence of Chronic Neuropathic Pain and Postthoracotomy Syndrome. [NCT00967135]110 participants (Actual)Interventional2010-06-30Completed
A 13-week, Randomized, Double-Blind, Placebo-Controlled, Monotherapy Trial of Pregabalin (BID) in Patients With Fibromyalgia [NCT00645398]Phase 3751 participants (Actual)Interventional2004-09-30Completed
Efficacy of Preoperative Melatonin Versus Pregabalin on Intraoperative Anxiolysis and Sedation During Hip Arthroplasty Under Regional Anesthesia [NCT05221151]Phase 478 participants (Actual)Interventional2022-01-30Completed
A Open-label, Radomized, Crossover Clinical Trial to Assess the Pharmacokinetics of Pregabalin CR After Multiple Dosing as Compared to Pregabalin IR in Healthy Male Volunteers [NCT02783183]Phase 132 participants (Actual)Interventional2016-06-30Completed
Effects Of Pregabalin On Sleep Maintenance In Subjects With Fibromyalgia Syndrome And Sleep Maintenance Disturbance: A Randomized Placebo-Controlled 2-Way Crossover Polysomnography Study [NCT00883740]Phase 3119 participants (Actual)Interventional2009-06-30Completed
An Open-Label Multicenter Extension Study To Determine Long Term Safety And Efficacy Of Pregabalin (Lyrica) As Monotherapy In Patients With Partial Seizures [NCT00596466]Phase 375 participants (Actual)Interventional2008-04-30Completed
Qualification of Single Dose Administration of Analgesic Therapy in the Treatment of Chronic Neuropathic Pain in Patients With Painful Diabetic Neuropathy [NCT00837941]Phase 20 participants (Actual)Interventional2009-04-30Withdrawn
The Effect of Sympathetic Dysfunction on Muscle Spindle Activity in Patients With Fibromyalgia Syndrome [NCT05704374]36 participants (Anticipated)Interventional2023-11-02Not yet recruiting
Assessment of Effect of an Experimental Pregabalin Gel in Reducing Post-operative Tooth Sensitivity Surgery Caused by Bleaching With 35% Hydrogen Peroxide [NCT06180707]Phase 375 participants (Anticipated)Interventional2024-01-05Not yet recruiting
A Phase IV, Longitudinal, Observational Study Examining Real-World Outcomes of Non-Hormonal Pharmacotherapies Among Individuals Treated for Bothersome Vasomotor Symptoms [NCT06049797]1,000 participants (Anticipated)Observational2023-11-15Recruiting
Analgetic and Anxiolytic Effect of Preoperative Pregabalin in Patients Undergoing Surgery of the Vertebral Columna [NCT00353704]Phase 450 participants (Actual)Interventional2005-11-30Completed
A Double-Blind, Randomized, Multicenter Efficacy And Safety Study Of Pregabalin (Lyrica) As Monotherapy In Patients With Partial Seizures [NCT00524030]Phase 3161 participants (Actual)Interventional2007-09-30Terminated(stopped due to See termination reason in detailed description.)
An Open-Label, Randomized Comparison of Duloxetine, Pregabalin, and the Combination of Duloxetine and Gabapentin Among Patients With Inadequate Response to Gabapentin for the Management of Diabetic Peripheral Neuropathic Pain [NCT00385671]Phase 4407 participants (Actual)Interventional2006-09-30Completed
A 17-Week, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Multi-Center Trial Of Pregabalin For The Treatment Of Chronic Central Neuropathic Pain After Spinal Cord Injury [NCT00407745]Phase 3220 participants (Actual)Interventional2007-01-31Completed
Randomized, Double-Blind, Multicenter, Placebo-Controlled Study To Evaluate Efficacy And Safety Of Pregabalin (CI-1008) In The Treatment For Pain Associated With Diabetic Peripheral Neuropathy [NCT00553475]Phase 3314 participants (Actual)Interventional2007-10-31Completed
A Randomized, Double Blind Multi Center Dose Ranging Study Of The Efficacy And Safety Of Pregabalin Compared To Placebo In The Adjunctive Treatment Of Post Surgical Pain After Primary Inguinal Hernia Repair [NCT00551135]Phase 3425 participants (Actual)Interventional2008-01-31Completed
A Prospective, Open Label, Multi-Center, Study Of Pregabalin In The Treatment Of Neuropathic Pain Associated With Diabetic Peripheral Neuropathy, Postherpetic Neuralgia, HIV-Related Peripheral Neuropathic Pain And Chemotherapy Induced Peripheral Neuropath [NCT00407511]Phase 4121 participants (Actual)Interventional2007-01-31Completed
Prospective Randomized Double-Blind Study Of Sperm Production In Healthy Volunteers Receiving Pregabalin Or Placebo [NCT00631696]Phase 4222 participants (Actual)Interventional2008-02-29Completed
A Randomized, Double-blind, Placebo-controlled Trial to Assess the Safety and Efficacy of the Perioperative Administration of Pregabalin in Reducing the Incidence of Postoperative Delirium and Improving Acute Postoperative Pain Management [NCT00819988]Phase 3240 participants (Actual)Interventional2009-05-31Completed
Pregabalin (Lyrica) for the Treatment of Vulvodynia: A Randomized, Double-blinded, Placebo-controlled Cross-over Study [NCT00853229]Phase 216 participants (Actual)Interventional2009-02-28Terminated(stopped due to Not feasible due to low accrual)
Assessment of Pregabalin Efficacy for the Treatment and Prevention of At-level Non-evoked and Evoked Spinal Cord Injury Neuropathic Pain [NCT01479556]Phase 482 participants (Anticipated)Interventional2011-12-31Not yet recruiting
Analgesic Potentials of Preoperative Oral Pregabalin,Intravenous Magnesium Sulphate and Their Combination in Acute Post-thoracotomy Pain.(Randomized,Double-Blind Study) [NCT02678117]Phase 3120 participants (Actual)Interventional2015-07-31Completed
Effects of Oral Pregabalin on Spinal Neurotransmitters in Patients Undergoing Total Knee Replacement (TKA) [NCT00729690]Phase 348 participants (Actual)Interventional2008-08-31Completed
A Multimodal Analgesia Protocol Adapted for Ambulatory Surgery [NCT04015908]Phase 4100 participants (Actual)Interventional2019-08-01Completed
A Placebo-Controlled, Escalating Dose, Multiple Dose Study To Evaluate The Safety, Tolerability And Pharmacokinetics Of Pregabalin In Pediatric Patients With Partial Onset Seizures [NCT00437281]Phase 1/Phase 265 participants (Actual)Interventional2007-04-30Completed
A Phase 3 Double-blind, Randomized, Placebo-controlled, Safety And Efficacy Study Of Once Daily Controlled Release Pregabalin In The Treatment Of Patients With Postherpetic Neuralgia (Protocol A0081224) [NCT01270828]Phase 3806 participants (Actual)Interventional2011-03-31Completed
Evaluation of Pregabalin in Idiopathic Small Fiber Neuropathy [NCT00787462]3 participants (Actual)Interventional2008-02-29Terminated(stopped due to Restrictive inclusion criteria/limited pool of suitable subjects with SFN.)
Assessing the Treatment of Patients With Neuropathic Pain Using LYRICA; A Non Interventional Post-marketing Study (NI-PMS) [NCT00843284]691 participants (Actual)Observational2006-09-30Completed
An 8-Week Multi-Center, Randomized, Double Blind, Placebo-Controlled Study To Evaluate The Efficacy, Safety And Tolerability Of Pregabalin (150mg-600mg/Day) Using A Flexible Dosing Schedule In The Treatment Of Subjects With Symptoms Of Neuropathic Pain [NCT00301223]Phase 3309 participants (Actual)Interventional2006-02-28Completed
A Randomised Controlled Trial in the Palliative Setting Regarding Off-Label Medication: Investigating the Efficiency of Amitriptyline Versus Pregabalin From a Societal Perspective [NCT00740571]Phase 3130 participants (Anticipated)Interventional2008-09-30Recruiting
A Randomized, Double-blind, Placebo-Controlled, Cross-over Study on the Effect of Pregabalin on Pain Related to Walking in Patients With Diabetic Peripheral Neuropathy [NCT02927951]Phase 344 participants (Actual)Interventional2011-01-31Completed
Effects of Pregabalin on Mechanical Hyperalgesia - EPOM [NCT00310583]Phase 4120 participants Interventional2006-07-31Recruiting
The Short and Long Term Effects of Perioperative Pregabalin Use on Functional Rehabilitation, Pain Outcomes and Anxiety Following Total Hip Arthroplasty: A Randomized, Double-Blind, Placebo-Controlled Trial. [NCT00762099]Phase 4184 participants (Anticipated)Interventional2009-05-31Recruiting
Efficacy and Safety of Pregabalin Sustained Release Tablet for Postherpetic Neuralgia -A Multicenter,Randomized, Double-blind, Placebo-controlled Trial [NCT02868801]Phase 3280 participants (Anticipated)Interventional2015-03-31Recruiting
A Randomized, Placebo Controlled Trial of Pregabalin for Post-operative Pain in Women Undergoing Abdominal Hysterectomy [NCT00781131]Phase 4101 participants (Actual)Interventional2008-05-31Completed
Open Label Trial Concerning the Effectiveness of Trazodone in the Treatment of Fibromyalgia (Phase I) and Its Augmentation With Pregabalin in Trazodone Partial Responders (Phase II) [NCT00791739]Phase 466 participants (Actual)Interventional2008-04-30Completed
Pregabalin Given to Tobacco Users to Study Addiction [NCT00644137]Early Phase 124 participants (Actual)Interventional2007-08-31Completed
Levetiracetam and Pregabalin for Monotherapy in Patients With Brain Tumors and Seizures. A Phase II Randomized Study. [NCT00629889]Phase 252 participants (Actual)Interventional2008-02-29Completed
Post Marketing Surveillance Study For Observing Safety And Efficacy Of Lyrica [NCT01220180]4,175 participants (Actual)Observational2006-07-31Completed
Pregabalin Acute Effects on Cortical Excitability, Psychophysical Parameters, and Serum Markers of Neuroplastic Processes in Fibromyalgia: a Placebo Controlled, Double Blinded, Randomized, Crossover Clinical Trial [NCT02639533]Phase 2/Phase 327 participants (Actual)Interventional2014-12-31Completed
Efficacy of Pregabalin in the Treatment of Orofacial Neuropathic Pain [NCT00852436]Phase 21 participants (Actual)Interventional2009-02-28Terminated(stopped due to difficulty to recruit patients)
Pregabalin In Partial Seizures (PREPS): An Open-Label, Multicenter Add On Therapy Trial. A Phase IV Open-Label Trial Using 150,300, 600 mg/Day Of Pregabalin [NCT00407797]Phase 4136 participants (Actual)Interventional2007-03-31Terminated
Does Pregabalin Improve Post-operative Pain After C-section Delivery [NCT04259073]138 participants (Actual)Interventional2018-03-01Completed
Role Of Pregabalin To Decrease Postoperative Pain In Microdiscectomy: A Randomized Clinical Trial [NCT04653792]Phase 484 participants (Actual)Interventional2018-06-04Completed
The Effects Of Pre-emptive Single Oral Dose Pregabalin on Attenuating Maternal Anxiety And Stress Response To Intubation During Caesarean Section [NCT04622202]Phase 1/Phase 274 participants (Anticipated)Interventional2020-11-15Recruiting
Can Pregabalin Prevent the Development of Neuropathic Pain Following Spinal Cord Injury? A Double-Blind, Randomized, Placebo Controlled Trial. [NCT00879021]Phase 35 participants (Actual)Interventional2009-09-30Terminated(stopped due to lack of funding and patients)
Fibromyalgia of Less Than One Year Duration in Primary Care: Treatment Response in a Double Blind, Placebo Controlled Study of Pregabalin [NCT01397006]Phase 40 participants (Actual)Interventional2011-09-30Withdrawn
Comparison Between Oxycodone and Pregabalin as Preemptive Analgesia for Postoperative Pain Control, Placebo-controlled RCT, 2021 [NCT05389813]Phase 2/Phase 3150 participants (Anticipated)Interventional2021-08-15Enrolling by invitation
A Methodology Study To Assess The Feasibility Of Using Functional Magnetic Resonance Imaging (fRMI) To Quantify The Effects Of Analgesic Drugs In Post-Traumatic Neuropathic Pain Subjects [NCT00610155]18 participants (Actual)Interventional2008-09-30Completed
Perioperative Administration of Pregabalin in Laparoscopic Living Donor Nephrectomy (L-LDN) - an Adjuvance to Peroral Analgetic Treatment - a Randomized Controlled Study [NCT01059331]Phase 480 participants (Actual)Interventional2010-02-28Completed
A Randomized, Placebo Controlled Trial of Pregabalin for Postoperative Pain in Women Undergoing Breast Cancer Surgery [NCT00785382]Phase 462 participants (Actual)Interventional2009-01-31Completed
An Open-Label Extension Safety And Efficacy Study Of Pregabalin (CI-1008) For The Treatment Of Fibromyalgia [NCT00830128]Phase 3106 participants (Actual)Interventional2009-07-31Completed
The Effect of Preemptive Oral Pregabalin as an Element of Multimodal Analgesia in Patients Undergoing Laparoscopic Sleeve Gastrectomy. A Randomized, Prospective, Double Blind Study. [NCT05804591]Phase 490 participants (Anticipated)Interventional2023-04-24Recruiting
A Randomized, Double-blind, Parallel-group Multi-center Comparative Flexible-dose Trial Of Pregabalin Versus Gabapentin As Adjunctive Therapy In Subjects With Partial Seizures. [NCT00537940]Phase 4482 participants (Actual)Interventional2008-02-29Completed
A Randomized, Double-Blind, Parallel-Group Multi-Center Comparative Flexible-Dose Study Of Pregabalin Versus Levetiracetam As Adjunctive Therapy To Reduce Seizure Frequency In Subjects With Partial Seizures [NCT00537238]Phase 3509 participants (Actual)Interventional2007-10-31Completed
A Study of Pregabalin (Lyrica) Augmentation in Serotonin Reuptake Inhibitor-Refractory Obsessive Compulsive Disorder [NCT00994786]Phase 415 participants (Actual)Interventional2009-01-31Completed
Long Term Safety And Efficacy Study Of Pregabalin (Lyrica) In Subjects With Generalized Anxiety Disorder [NCT00624780]Phase 4615 participants (Actual)Interventional2009-05-31Completed
Effect of Preoperative Pregabalin Administration on the Postoperative Opioid Consumption in Patients Undergoing Nephrectomy [NCT00957177]Phase 320 participants (Anticipated)Interventional2009-04-30Completed
An Asian, Phase 2, Multicenter, Randomized, Double-blind, Placebo- and Pregabalin-controlled, Dose-finding Study of DS-5565 in Patients With Pain Associated With Diabetic Peripheral Neuropathy [NCT01504412]Phase 2450 participants (Actual)Interventional2012-01-31Completed
An Observational Study Efficacy and Safety of Memantine XR (Extended Release) and Pregabalin Combination Therapy in Chemotherapy-Induced Peripheral Neuropathy (CIPN) [NCT03709888]20 participants (Actual)Observational2016-07-09Completed
A Prospective, Randomized, Double Blinded, Placebo Controlled Pilot Study Assessing the Effect of Perioperative Pregabalin on the Incidence of Chronic Post Thoracotomy Pain Syndrome [NCT00663962]Phase 415 participants (Actual)Interventional2008-04-30Completed
Comparison the Treatment Effects Between Ba-Duan-Jin and Pregabalin in Patients With Fibromyalgia [NCT03797560]104 participants (Actual)Interventional2019-03-22Completed
A 1-Year Open-Label Safety Extension Study of Pregabalin in Patients With Anxiety Disorders [NCT00150449]Phase 3511 participants Interventional2001-01-31Completed
Study PXN110448: A Dose-response Study of XP13512, Compared With Concurrent Placebo Control and LYRICA(Pregabalin), in Subjects With Neuropathic Pain Associated Withdiabetic Peripheral Neuropathy (DPN) [NCT00643760]Phase 2421 participants (Actual)Interventional2008-03-31Completed
Open Labelled Study of Pregabalin in the Treatment of Neuropathic Pain in Cervical Myeloradiculopathy (Pregabalin and Radicular Pain Study (PARPS)) [NCT01061697]Phase 450 participants (Actual)Interventional2008-01-31Completed
An 8-Week, Double-Blind, Placebo-Controlled, Phase 3 Trial of Pregabalin (150-600 mg/Day) in the Adjunctive Treatment of Patients With Generalized Anxiety Disorder (GAD) Who Have Not Optimally Responded to Existing Therapies(GAD) [NCT00413010]Phase 3356 participants (Actual)Interventional2006-12-31Completed
A 12-month Open-label Extension Study Evaluating The Safety And Tolerability Of Flexible Doses Of Pregabalin In Pediatric Patients With Partial Onset Seizures [NCT00448916]Phase 354 participants (Actual)Interventional2007-05-31Completed
Lyrica (Pregabalin) Administered As An Add-On Therapy For Partial Seizures (LEADER) An Open-Label, Multicenter Add-On Therapy Trial [NCT00288639]Phase 498 participants (Actual)Interventional2005-12-31Completed
A Randomized, Comparative, Double-Blind, Parallel-Group, Multicenter, Monotherapy, Study Of Pregabalin (Lyrica) And Lamotrigine (Lamictal) In Patients With Newly Diagnosed Partial Seizures [NCT00280059]Phase 3660 participants (Actual)Interventional2006-08-31Completed
A Randomized, Double-Blind, Placebo-Controlled Trial Of The Prevention And Treatment Of Chemotherapy-Induced Peripheral Neuropathy Symptoms In Subjects With Advanced Colorectal Cancer [NCT00380874]Phase 464 participants (Actual)Interventional2007-01-31Terminated(stopped due to See detailed description for termination reason)
Randomised, Double-blind, Placebo-controlled Trial of the Effect of the Combination of Imipramine and Pregabalin for the Treatment of Painful Polyneuropathy [NCT01047488]Phase 475 participants (Anticipated)Interventional2010-02-28Not yet recruiting
An Open-Label, Multiple-Dose, Randomized, Crossover Study In Healthy Volunteers To Investigate The Pharmacokinetics Of Three Dose Strengths Of Pregabalin Controlled Release Formulations Administered Following An Evening Meal As Compared To The Immediate R [NCT01009541]Phase 120 participants (Actual)Interventional2009-11-30Completed
A 12 Week, Open-Label, Safety Trial Of Pregabalin In Patients With Fibromyalgia [NCT00346034]Phase 3357 participants (Actual)Interventional2006-12-31Completed
A 14 Week, Randomized, Double-Blind, Placebo-Controlled Trial Of Pregabalin Twice Daily In Patients With Fibromyalgia. [NCT00333866]Phase 3747 participants (Actual)Interventional2006-07-31Completed
Randomized Double-Blind, 12-Week Study Of Pregabalin In Subjects With Restless Legs Syndrome [NCT01061372]Phase 30 participants (Actual)Interventional2010-05-31Withdrawn
A 9 Week, Randomized, Double-Blind, Placebo-Controlled, Multicenter, Study Of Pregabalin (BID) In Subject With Posttraumatic Peripheral Neuropathic Pain [NCT00292188]Phase 4255 participants (Actual)Interventional2006-01-31Completed
A Multiple Dose, Randomized, Double-Blind Multicenter Study Of The Efficacy And Safety Of Pregabalin Compared To Placebo In The Treatment Of Patients With Post-Surgical Pain From Hysterectomy [NCT00468845]Phase 3501 participants (Actual)Interventional2007-06-30Completed
A 13-Week, Randomized, Multi-Center, Double-Blind, Placebo-Controlled, Parallel-Group Study To Evaluate The Efficacy, Safety And Tolerability Of Pregabalin (150-600 Mg/Day) Using A Flexible Dosing Schedule In The Treatment Of Subjects With Central Post-St [NCT00313820]Phase 4220 participants (Actual)Interventional2006-08-31Completed
A 15 Week, Randomized, Double Blind, Parallel-group, Placebo-controlled, Flexible-dose, Safety And Efficacy Study Of Pregabalin In Adolescents (12-17 Years Old) With Fibromyalgia [NCT01020474]Phase 4107 participants (Actual)Interventional2010-05-31Completed
A Randomized, Double-Blind, Comparative, Multi-Center, Phase Ⅳ Clinical Trial to Evaluate Efficacy of 『Opast Tablet』for Neurologic Claudication in Patients With Lumbar Spinal Stenosis [NCT01888536]Phase 4182 participants (Actual)Interventional2013-02-28Completed
Study of the Brain With Optic Functional Neuroimaging in Patients With Chronic Pain Using Transcranial Direct Current Stimulation [NCT01904097]Phase 234 participants (Anticipated)Interventional2013-03-31Recruiting
The Effect of Preventional Drug Therapy on Pain Regulation Mechanisms Among Spinal Cord Injury Patients Who Have Yet to Develop Central Pain [NCT06066918]50 participants (Anticipated)Interventional2021-07-13Recruiting
Effectiveness of Preemptive Use of Pregabalin on Pain Intensity and Postoperative Morphine Consumption After Laparoscopic Colorectal Surgery [NCT01940224]50 participants (Actual)Interventional2013-07-31Completed
"Use of Duloxetine or Pregabalin in Monotherapy Versus Combination Therapy of Both Drugs in Patients With Painful Diabetic Neuropathy The COMBO - DN (COmbination vs Monotherapy of pregaBalin and dulOxetine in Diabetic Neuropathy) Study" [NCT01089556]Phase 3811 participants (Actual)Interventional2010-03-31Completed
Effect of Paracetamol Versus Paracetamol Combined With Pregabalin Versus Paracetamol Combined With Pregabalin and Dexamethasone on Pain and Opioid Requirements in Patients Scheduled for Abdominal Hysterectomy. [NCT00209495]Phase 4130 participants (Actual)Interventional2005-06-30Completed
Does Perioperative Pregabalin Reduce Postoperative Pain After Arthroscopic Anterior Cruciate Ligament Reconstruction Surgery Under Spinal Anesthesia? [NCT03211728]96 participants (Actual)Interventional2017-07-19Completed
An Open-Label, Extension Safety and Efficacy Study of Pregabalin in Patients With Chronic Neuropathic Pain. [NCT00141362]Phase 3325 participants Interventional2001-10-31Completed
Perioperative Pregabalin as Part of a Multimodal Treatment Plan for Ureteral Stent Symptoms After Ureteroscopy: a Randomized Controlled Trial [NCT04122196]Phase 2/Phase 3118 participants (Actual)Interventional2020-06-01Active, not recruiting
Multicentric, Open, Randomized Study Comparing Topical Treatment by Patch of Capsaicin to 8% (Qutenza) to Pregabalin Oral in the Early Treatment of Neuropathic Pain After Primary Surgery for Breast Cancer [NCT03794388]Phase 3140 participants (Actual)Interventional2019-03-19Completed
[NCT02020122]5 participants (Actual)Interventional2014-01-31Completed
Evaluation of the Efficacy of Perioperative Administration of Tianeptine Versus Pregabalin on Acute and Chronic Post Mastectomy Pain After Breast Cancer Surgery. A Double-Blinded Randomized Controlled Trial. [NCT05935059]90 participants (Anticipated)Interventional2023-06-21Recruiting
Effectiveness of Pregabalin Treatment for Trigger Points in Patients With Comorbid Myofascial Pain Syndrome and Fibromyalgia Syndrome: a Randomized Controlled Trial [NCT04600037]40 participants (Actual)Interventional2014-04-26Completed
Does Optimal Pain Control With Pregabalin and Celecoxib Predict Improved Function After Total Hip Arthroplasty? [NCT00581685]Phase 331 participants (Actual)Interventional2008-01-31Completed
The Role of Pregabalin in the Treatment of Post-Operative Pain in Fracture Patients [NCT00583869]Early Phase 186 participants (Actual)Interventional2007-05-31Completed
A Multi-site, Double-blind, Randomized, Placebo-controlled, Crossover Study of Pregabalin (Lyrica, PGB) in the Treatment of Essential Tremor [NCT00584376]Phase 429 participants (Actual)Interventional2007-12-31Completed
Research of Pregabalin Stabilize Cardiovascular Response to Laryngoscopy and Tracheal Intubation of Patients Under General Anesthesia [NCT03456947]Phase 490 participants (Actual)Interventional2017-01-01Completed
An Open-Label Long-Term Study Of Pregabalin For The Treatment Of Central Neuropathic Pain (Post Spinal Cord Injury Pain, Post Stroke Pain, And Multiple Sclerosis Pain) [NCT01202227]Phase 3104 participants (Actual)Interventional2010-09-30Completed
Comparison of the Efficacy of Duloxetine and Pregabalin in Patients With Knee Osteoarthritis With Mix Type Pain [NCT04532684]Phase 466 participants (Actual)Interventional2016-10-31Completed
Influence of Patient Sex on Pain Control and Multimodal Analgesia in Total Knee Arthroplasty [NCT04471233]Phase 4250 participants (Actual)Interventional2020-12-09Completed
An 11-week Randomized, Double-blind, Multi Center, Placebo-controlled Study To Evaluate The Efficacy, Safety And Tolerability Of Pregabalin (300 Mg/Day) Using A Fixed Dosing Schedule In The Treatment Of Subjects S With Pain Associated With Diabetic Periph [NCT01332149]Phase 3626 participants (Actual)Interventional2011-07-31Completed
Analgesic Efficacy and Safety of Peri-operative Pregabalin Following Radical Cystectomy, a Prospective,Randomized, Double-blinded, Controlled Trial [NCT02724293]Phase 2/Phase 360 participants (Actual)Interventional2014-09-30Completed
Methodology Study To Assess The Ability Of A Randomized, Double-Blind, Placebo-Controlled, Two Period Crossover Study To Detect The Effect Of Pregabalin In Post-Traumatic Neuropathic Pain Patients [NCT00654940]Phase 125 participants (Actual)Interventional2008-05-31Completed
Liceo Study: A Prospective, Observational Study On The Effectiveness Of New Antiepileptic Drugs As First Bitherapy In The Daily Clinical Practice [NCT00855738]Phase 4111 participants (Actual)Interventional2007-05-31Completed
The Efficacy and Safety of Pregabalin Release Tablets for the Treatment of Fibromyalgia [NCT02868814]Phase 3240 participants (Anticipated)Interventional2016-05-31Recruiting
A Randomized, Double-Blind, Placebo-Controlled, 3-Way Crossover, Multicenter Polysomnography Study Of Pregabalin And Pramipexole In Adults With Restless Legs Syndrome [NCT00991276]Phase 385 participants (Actual)Interventional2009-12-31Completed
The Effect of Pregabalin on the Spinal Anesthesia: Randomized Controlled Placebo Study [NCT02690506]44 participants (Actual)Interventional2016-02-29Completed
An Open-Label, Extension Safety Trial Of Pregabalin In Subjects With Neuropathic Pain Associated With HIV Neuropathy (Pregabalin A0081251) [NCT01145417]Phase 3217 participants (Actual)Interventional2010-07-31Terminated(stopped due to See termination reason in detailed description.)
Effect of Pregabalin on Colonic Sensorimotor Function in Healthy Adults. [NCT01094808]Phase 462 participants (Actual)Interventional2010-03-31Completed
A Open-label, Randomized, Crossover Clinical Trial to Assess the PK of Pregabalin CR After Multiple Dosing as Compared to Pregabalin IR and the Food Effect of High Fat Diet After Single Dosing in Healthy Male Volunteers [NCT02783638]Phase 164 participants (Actual)Interventional2016-01-31Completed
Randomized, Double-Blind, Multicenter, Placebo-Controlled Study To Evaluate Efficacy And Safety Of Pregabalin(CI-1008)In The Treatment Of Fibromyalgia [NCT00830167]Phase 3498 participants (Actual)Interventional2009-03-31Completed
Pain Management in Osteoarthritis Using the Centrally Acting Analgesics Duloxetine and Pregabalin [NCT02612233]Phase 481 participants (Actual)Interventional2013-09-30Completed
A TWO WEEK DOUBLE-BLIND PLACEBO-CONTROLLED CROSSOVER STUDY TO COMPARE THE EFFICACY AND SAFETY OF A PREGABALIN/PF-00489791 COMBINATION VERSUS PREGABALIN ALONE IN PATIENTS WITH POST-HERPETIC NEURALGIA [NCT00599638]Phase 272 participants (Actual)Interventional2008-04-09Completed
A Comparison of Pregabalin (Lyrica®) to Placebo in Postoperative Pain Relief of Patients Status-post Photorefractive Keratectomy: A Double-masked Randomized Prospective Study [NCT01097577]130 participants (Actual)Interventional2010-03-31Completed
Postoperative Oxycodone Consumption After Spinal Surgery in Pregabalin-treated Patients Compared to a 48-h Perioperative Administration: a Prospective, Observational Study [NCT02866396]70 participants (Actual)Observational2016-09-30Completed
Randomized Double-Blind, Multi-Center Study Of Efficacy And Tolerability Of Pregabalin Versus Placebo As An Adjunct To Standard Of Care For Perioperative Management Of Patients Undergoing Total Hip Arthroplasty [NCT00905437]Phase 372 participants (Actual)Interventional2009-11-30Terminated(stopped due to The Study was terminated on May 24th 2012 due to a slow recruitment rate. The study was not terminated for reasons of safety or efficacy.)
A Randomized, Double Blind, Placebo Controlled, 2-Way Crossover Methodology Study Designed To Assess The Reproducibility And Sensitivity Of Quantitative Sensory Testing (QST) In Patients With Neuropathic Pain Treated With Pregabalin Vs Placebo [NCT01117766]31 participants (Actual)Interventional2006-12-31Completed
A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Multicenter Trial Of Pregabalin Versus Placebo In The Treatment Of Neuropathic Pain Associated With HIV Neuropathy (Pregabalin A0081244) [NCT01049217]Phase 3377 participants (Actual)Interventional2010-04-30Terminated(stopped due to See termination reason in detailed description.)
NARROW BAND UVB PHOTOTHERAPY VERSUS PREGABALIN IN TREATMENT OF REFRACTORY PRURITIS IN END STAGE RENAL DISEASE PATIENTS [NCT04660773]Phase 240 participants (Anticipated)Interventional2021-08-01Recruiting
Randomized Phase II Trial Evaluating Activity and Tolerability of Fixed Dose of Oxycodone and Increasing Dose of Pregabalin Versus Increasing Dose of Oxycodone and Fixed Dose of Pregabalin for the Treatment of Oncological Neuropathic Pain [NCT00637975]Phase 280 participants (Anticipated)Interventional2007-09-30Completed
Effect of Preoperative Administration of Oral Pregabalin on the Postoperative Analgesia in Patients Scheduled for Radiofrequency Ablationof Focal Lesions in the Liver [NCT03151213]Phase 4100 participants (Anticipated)Interventional2017-05-01Recruiting
Opiate Free Multimodal Pain Pathway in Elective Foot and Ankle Surgery: A Prospective Study [NCT04771741]72 participants (Actual)Observational2020-12-01Completed
[S,S]-Reboxetine Add-On Trial: A Randomized, Double-Blind, Placebo-Controlled, Multi-Center Trial Of [S,S]-Reboxetine In Patients With Postherpetic Neuralgia (PHN) Concomitantly Treated With Pregabalin. [NCT00334685]Phase 2136 participants (Actual)Interventional2006-08-22Terminated(stopped due to The Data Monitoring Committee terminated the study on the basis of futility (insufficient clinical response).)
Pregabalin Has Additive Analgesic and Ventilatory Depressive Effects in Combination With Remifentanil [NCT01419405]Phase 412 participants (Actual)Interventional2011-12-31Completed
Randomized,Open-label,Parallel Study to Evaluate the Pharmacokinetic Characteristics of Pregabalin According to Different Controlled Released Formulations in Healthy Male Subjects [NCT01420913]Phase 128 participants (Actual)Interventional2011-08-31Completed
Analgesic Effect of Pregabalin in Patients Undergoing Total Abdominal Hysterectomy [NCT01466101]0 participants (Actual)Interventional2011-01-31Withdrawn(stopped due to PI left the institution. No subjects screened or enrolled.)
Effect of Application of Low Dose of Pregabalin in TJA Before the Day of Surgery on Reducing Postoperative Side Effect of This Medicine [NCT04599894]Phase 458 participants (Actual)Interventional2020-11-01Completed
Randomized, Double Blind, 12-Month Study Of Pregabalin In Subjects With Restless Legs Syndrome [NCT00806026]Phase 3731 participants (Actual)Interventional2008-12-31Completed
POST-MARKETING SURVEILLANCE (PMS) TO OBSERVE THE SAFETY AND EFFECTIVENESS OF LYRICA(REGISTERED) CR EXTENDED RELEASE TABLETS [NCT04171453]600 participants (Anticipated)Observational2020-02-03Recruiting
A Phase 2a Randomized, Double-Blind, Multicenter, Placebo and Active Controlled Study to Assess Analgesic Efficacy and Safety of ASP3662 in Subjects With Painful Diabetic Peripheral Neuropathy [NCT02372578]Phase 2115 participants (Actual)Interventional2015-05-27Terminated(stopped due to The study was terminated due to futility analysis.)
The Clinical Effect of Pregabalin on Neuropathic Pain in Non Central Sensitized Patients After Total Knee Arthroplasty: Randomized Controlled Trial [NCT05322681]90 participants (Anticipated)Interventional2022-05-31Not yet recruiting
An Open-Label, Extension Safety and Efficacy Study of Pregabalin in Patients With Painful Diabetic Peripheral Neuropathy. [NCT00150423]Phase 3384 participants Interventional2001-01-31Completed
Swiss Multi-centre, Randomized, Placebo Controlled Trial of Pregabalin for Prevention of Persistent Pain in High Risk Patients Undergoing Breast Cancer Surgery [NCT03216187]Phase 3300 participants (Anticipated)Interventional2018-01-09Recruiting
A Multicenter, Double-blind, Randomized, Placebo and Active-controlled Study of Pregabalin for the Treatment of Uremic Pruritus [NCT01852318]Phase 4210 participants (Anticipated)Interventional2014-04-30Not yet recruiting
Randomized, Double-blinded, Double-dummy, Active-controlled, Multi-center Phase 3 Clinical Trial to Evaluate the Efficacy and Safety of KW21052 for 8 Weeks Compared to Pregabalin (Lyrica) in the Diabetic Patients With Neuropathic Pain [NCT01863810]Phase 3394 participants (Anticipated)Interventional2013-08-31Not yet recruiting
Effect of Pregabalin in Patients With Radiotherapy-Related Neuropathic Pain: a Randomized, Double-blind, Placebo-controlled Trial [NCT01869569]Phase 2137 participants (Actual)Interventional2013-02-28Completed
A 12-MONTH OPEN-LABEL STUDY TO EVALUATE THE SAFETY AND TOLERABILITY OF PREGABALIN AS ADJUNCTIVE THERAPY IN PEDIATRIC SUBJECTS 1 MONTH TO 16 YEARS OF AGE WITH PARTIAL ONSET SEIZURES AND PEDIATRIC AND ADULT SUBJECTS 5 TO 65 YEARS OF AGE WITH PRIMARY GENERAL [NCT01463306]Phase 3605 participants (Actual)Interventional2012-02-21Completed
RCT of Duloxetine & Pregabalin for the Treatment of Gulf War Illness in Veterans [NCT01846182]Phase 2112 participants (Actual)Interventional2015-06-24Terminated(stopped due to Terminated by Funder)
A Phase 2A, Randomized, Blinded, Placebo- and Active-controlled, 2-Period Crossover Study to Assess the Analgesic Efficacy, Safety, and Tolerability of ADL5747 in Subjects With Postherpetic Neuralgia [NCT01058642]Phase 241 participants (Actual)Interventional2010-01-31Terminated
Comparative Evaluation of Vortioxetine Versus Other Antidepressants With Pregabalin Augmentation in Treatment-resistant Burning Mouth Syndrome: a Prospective Longitudinal Clinical Trial With Treatment Response Prediction [NCT06025474]Phase 3203 participants (Anticipated)Interventional2023-01-01Recruiting
A Double-blind, Placebo-Controlled Trial of Pregabalin for the Treatment of Alcohol Use Disorder [NCT04322305]Phase 250 participants (Anticipated)Interventional2021-01-11Suspended(stopped due to U.S. Department of Health and Human Services OHRP issued an FWA restriction on NYSPI research that included a pause of human subjects research as of June 23, 2023. This study will resume recruitment after OHRP has approved the resumption of research.)
Interest of Pregabalin (Lyrica) on the Treatment of Reflex Earache in Head and Neck Cancer. [NCT02924675]Phase 242 participants (Actual)Interventional2015-06-05Terminated(stopped due to not sufficiency recruitment)
A Randomized, Double-blind, Placebo-controlled, Parallel Group, Multi-center Trial Of Pregabalin Controlled Release Formulation As Adjunctive Therapy In Adults With Partial Onset Seizures [NCT01262677]Phase 3325 participants (Actual)Interventional2011-02-17Completed
A Multicenter, Randomized, Double-Blind, Double-Dummy, Placebo- and Pregabalin Capsule-Controlled, 13-Week, Adaptive-design Phase 2/3 Study to Evaluate the Efficacy and Safety of HSK16149 Capsules in Chinese Patients With Diabetic Peripheral Neuropathic P [NCT04647773]Phase 2/Phase 3687 participants (Anticipated)Interventional2020-12-02Not yet recruiting
'Fix the Dysfunction' Concept for Mechanism-based Pharmacological Treatment of Neuropathic Pain by Drug [NCT03276689]300 participants (Actual)Interventional2017-10-19Completed
A Phase 3b Multicenter, Double-blind, Randomized, Placebo-controlled Cross-over Efficacy And Safety Study Of Pregabalin In The Treatment Of Patients With Painful Diabetic Peripheral Neuropathy And Pain On Walking [NCT01474772]Phase 3217 participants (Actual)Interventional2011-10-31Completed
A 14-week, Randomized, Double-blind Placebo-controlled Study For Pregabalin In Subjects With Fibromyalgia [NCT01387607]Phase 3343 participants (Actual)Interventional2012-02-06Completed
An 8-week Randomized, Double Blind, Multi-center, Placebo-controlled Study To Evaluate The Efficacy, Safety And Tolerability Of Pregabalin ( 300mg/Day ) Using A Fixed Dosing Schedule In The Treatment Of Subjects With Postherpetic Neuralgia ( Phn ) [NCT01455428]Phase 4223 participants (Actual)Interventional2011-12-31Completed
Pregabalin and Lidocaine in Breast Cancer Surgery to Alter Neuropathic Pain (PLAN): A Pilot Trial [NCT02240199]Phase 3100 participants (Actual)Interventional2014-11-30Completed
A Double-blind, Randomised, Parallel Groups Investigation Into the Effects of Pregabalin, Duloxetine and Amitriptyline on Aspects of Pain, Sleep, and Next Day Performance in Patients Suffering From Diabetic Peripheral Neuropathy [NCT00370656]Phase 2/Phase 390 participants (Anticipated)Interventional2007-02-28Completed
SPECIAL INVESTIGATION OF LONG TERM USE OF LYRICA(REGULATORY POST MARKETING COMMITMENT PLAN) [NCT01279850]891 participants (Actual)Observational2011-08-31Completed
Prospective, Double-blinded, Randomised, Placebo Controlled Trial of Pre-emptive Analgesia to Prevent Pain Following Sternotomy for Cardiac Surgery. [NCT01480765]Phase 4150 participants (Anticipated)Interventional2011-11-30Recruiting
A 14-Week, Randomized, Double-Blind, Placebo-Controlled Trial Of Pregabalin Twice Daily In Patients With Fibromyalgia [NCT00230776]Phase 3740 participants Interventional2005-10-31Completed
Effect of Paracetamol Versus Paracetamol Combined With Pregabalin Versus Paracetamol Combined With Pregabalin and Dexamethasone on Pain and Opioid Requirements in Patients Scheduled for a Primary Total Hip Replacement [NCT00235261]Phase 4120 participants (Anticipated)Interventional2005-10-31Completed
A 12-Week, Open-Label, Safety Trial Of Pregabalin In Patients With Fibromyalgia [NCT00282997]Phase 3500 participants Interventional2006-02-28Completed
A Comparative Single Center, Randomized Neuropathic Pain Assessment Study Involving Patients With Clinically Definite Multiple Sclerosis (MS) Receiving Treatment With Either Pregabalin or Paroxetine [NCT00291148]Phase 375 participants (Anticipated)Interventional2006-03-31Completed
A DOUBLE-BLIND, PLACEBO-CONTROLLED, PARALLEL-GROUP, MULTICENTER STUDY OF THE EFFICACY AND SAFETY OF PREGABALIN AS ADJUNCTIVE THERAPY IN CHILDREN 4 -16 YEARS OF AGE WITH PARTIAL ONSET SEIZURES [NCT01389596]Phase 3295 participants (Actual)Interventional2011-09-27Completed
Placebo-Controlled Study of Pregabalin for the Pain of Acute Herpes Zoster [NCT00352651]Phase 234 participants (Anticipated)Interventional2006-06-30Terminated(stopped due to "This study should be terminated as the study has been closed for years and the investigator has since retired. No records are available.~Thank you, Marlene")
Pregabalin Add-On Titration Trial: A Randomized, Double-Blind, Placebo-Controlled, Multi-Center Study to Evaluate the Efficacy and Safety of Pregabalin (150 mg - 600 mg/Day) Using a Flexible, Optimized Dose Schedule in Subjects With Partial Seizures [NCT00141258]Phase 3178 participants (Actual)Interventional2005-10-31Completed
Pregabalin BID Open-Label Add-On Trial: An Open-Label, Multicenter Follow-On Study to Determine Long-Term Safety and Efficacy in Patients With Partial Seizures. [NCT00141336]Phase 3750 participants Interventional1999-11-30Completed
An Open-Label Extension to Evaluate the Safety and Efficacy of Pregabalin for Treatment of Chronic Central Neuropathic Pain After Spinal Cord Injury. [NCT00141375]Phase 3132 participants Interventional2002-08-31Completed
Pregabablin Open-Label, Follow-On Safety Trial In Patients With Refractory Partial Epilepsy. [NCT00141414]Phase 282 participants Interventional1997-11-30Completed
A Double-Blind Randomized Placebo-Controlled Trial of the Time to Onset of Pain Relief in Subjects With Post Therapeutic Neuralgia (PHN) Treated With Pregabalin (150 - 600 Mg/Day Flexible Optimized Dose or 300 Mg/Day Fixed Dose) or Placebo [NCT00159666]Phase 4255 participants Interventional2004-10-31Completed
A Randomized Placebo-Controlled Trial of the Efficacy and Safety of Pregabalin in the Treatment of Subjects With Neuropathic Pain Associated With Lumbo-Sacral Radiculopathy [NCT00159705]Phase 3276 participants (Actual)Interventional2005-04-30Completed
Pregabalin Open-Label, Multicenter Add-On Trial Following a 4-Day Double-Blind Transition Period to Determine Long-Term Safety and Efficacy in Patients With Partial Seizures. [NCT00141245]Phase 3325 participants Interventional1998-10-31Completed
An Open-Label, Extension Safety and Efficacy Study of Pregabalin in Patients With Painful Diabetic Peripheral Neuropathy. [NCT00141401]Phase 3240 participants Interventional1999-09-30Completed
The Effects of GABA Medications on Cocaine Responses in Humans [NCT00142883]72 participants (Actual)Interventional2004-09-30Terminated(stopped due to Study has been completed)
A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Multi-Center Trial of Pregabalin Versus Placebo in the Treatment of Neuropathic Pain Associated With Diabetic Peripheral Neuropathy [NCT00143156]Phase 3450 participants Interventional2005-03-31Completed
A 14-Week, Double-Blind, Randomized, Placebo-Controlled, Multicenter Study To Evaluate The Safety And Efficacy Of Pregabalin (150mg-600mg/Day) Using A Flexible Optimal Dose Schedule In Patients With Painful Diabetic Peripheral Neuropathy (DPN). [NCT00156078]Phase 4450 participants Interventional2005-01-31Completed
Randomized Clinical Trial of Pregabalin for Opioid Withdrawal Syndrome [NCT03017430]Phase 4100 participants (Actual)Interventional2014-01-31Completed
PharmacofMRI of Anxiolytic Medications (Pregabalin) [NCT00706836]Phase 416 participants (Actual)Interventional2008-06-30Completed
Perioperative Administration of Pregabalin for Pain After Robot-assisted Endoscopic Thyroidectomy [NCT00905580]Phase 499 participants (Actual)Interventional2009-05-31Completed
Improving Pain Management and Long Term Outcomes Following High Energy Orthopedic Trauma (Pain Study) [NCT01789216]Phase 3450 participants (Actual)Interventional2013-07-31Completed
A Phase 3b Multicenter, Double-blind, Randomized, Placebo-controlled, 2-way Crossover Study Of Pregabalin In The Treatment Of Fibromyalgia With Concurrent Antidepressant Therapy For Comorbid Depression (Protocol A0081275) [NCT01432236]Phase 3197 participants (Actual)Interventional2011-10-31Completed
Behavioral Effects of Drugs (Outpatient)(43) [NCT01511640]Early Phase 130 participants (Actual)Interventional2017-02-01Completed
Pregabalin Open-Label Add-On Trial: An Open-Label, Multicenter Follow-On Study to Determine Long-Term Safety and Efficacy in Patients With Partial Seizures. [NCT00150293]Phase 3337 participants Interventional2002-03-31Completed
The Effect of Esketamine Combined With Pregabalin on Chronic Postsurgical Pain in Patients After Craniotomy. [NCT05160493]Phase 2/Phase 3246 participants (Anticipated)Interventional2021-12-20Recruiting
A Phase 3 Double-blind, Randomized, Placebo-controlled, Safety And Efficacy Study Of Once Daily Controlled Release Pregabalin In The Treatment Of Patients With Fibromyalgia (Protocol A0081245) [NCT01271933]Phase 3441 participants (Actual)Interventional2011-03-31Completed
[NCT00447369]Phase 370 participants (Anticipated)Interventional2007-05-31Withdrawn(stopped due to Because we did not find funds to do it)
Perioperative Administration of Pregabalin in Patients Undergoing Arthroscopic Anterior Cruciate Ligament Reconstruction: Does it Help to Relieve Postoperative Pain? [NCT01242332]Phase 460 participants (Actual)Interventional2009-08-31Completed
Outcomes Of Perioperative Pregabalin On Total Knee Arthroplasty: A Randomized Controlled Trial [NCT02954484]Phase 3116 participants (Actual)Interventional2015-04-30Completed
Evaluation of Efficacy of Combination of Pregabalin and Antioxidant in Reducing Pain in Chronic Pancreatitis: a RCT [NCT01528540]87 participants (Actual)Interventional2012-04-30Completed
Effect of Preoperative Pregabalin on Pain Intensity and Interleukin-6 Levels in Living Donor Kidney [NCT01529190]Phase 240 participants (Actual)Interventional2011-03-31Completed
Effect of Paracetamol Versus Paracetamol Combined With Pregabalin Versus Paracetamol Combined With Pregabalin and Dexamethasone on Pain and Opioid Requirements in Patients Scheduled for Tonsillectomy [NCT00378547]Phase 4147 participants (Actual)Interventional2006-01-31Terminated(stopped due to ENT surgery stopped at the recruiting hospital)
Pregabalin Open-Label Add-On Trial: An Open-Label, Multicenter Follow-On Study to Determine Long-Term Safety and Efficacy in Patients With Partial Seizures. [NCT00141388]Phase 3455 participants (Actual)Interventional1998-07-31Completed
Pregabalin In Partial Seizures (Preps) : An Open-Label, International, Multicenter Add-On Therapy Trial [NCT00141427]Phase 4540 participants Interventional2004-11-30Completed
Pregabalin BID Open-Label Add-On Trial: A Follow-Up Study To Determine Long-Term Safety and Efficacy in Patients With Partial Seizures [NCT00143143]Phase 3300 participants Interventional2001-09-30Completed
Pregabalin for Pain Reduction in Critical Limb Ischemia - A Double Blind, Randomized Controlled Study [NCT00403780]Phase 418 participants (Actual)Interventional2006-06-30Terminated(stopped due to low inclusion rate)
An Open-Label Extension Safety and Efficacy Study of Pregabalin in Patients With Postherpetic Neuralgia [NCT00150436]Phase 3276 participants Interventional2002-02-28Completed
An 8-Week Multicenter, Randomized, Double-Blind, Placebo-Controlled, Flexible Dose Study Of Pregabalin (300-600 Mg/Day) And Venlafaxine XR (75-225 Mg/Day) For The Acute Treatment Of DSM-IV Generalized Anxiety Disorder In Outpatients [NCT00151450]Phase 3390 participants Interventional2005-03-31Completed
A Six-Month, Double-Blind, Placebo Controlled, Durability of Effect Study of Pregabalin for Pain Associated With Fibromyalgia [NCT00151489]Phase 31,020 participants Interventional2005-04-30Completed
A Long-Term, Open-Label, Safety Trial of Pregabalin in Patients With Fibromyalgia [NCT00151528]Phase 3428 participants Interventional2005-01-31Completed
A 13 Week, Double-Blind, Placebo-Controlled Phase 4 Trial of Pregabalin (CI-1008, 600 mg/Day) for Relief of Pain in Subjects With Painful Diabetic Peripheral Neuropathy [NCT00159679]Phase 4167 participants (Actual)Interventional2004-09-30Completed
A Prospective, Randomized Controlled Trial on Perioperative Pregabalin to Reduce Late-onset Complex Regional Pain Syndrome After Total Knee Arthroplasty [NCT00558753]Phase 2240 participants (Actual)Interventional2006-04-30Completed
Investigation of Somatosensory Predictors of Response to Pregabalin in Painful Chemotherapy-induced Peripheral Neuropathy (CIPN) [NCT02394951]26 participants (Actual)Interventional2015-04-30Completed
Does Pregabalin Improve Symptoms of Anxiety in Patients With Epilepsy? A Comparison With Sertraline [NCT01309074]Phase 40 participants (Actual)Interventional2009-11-30Withdrawn(stopped due to No subjects could be enrolled and therefore we decided to withdraw/stop the study.)
Comparative Study for Decrease of Pain Intensity and Pain Sensitivity Between Pregabalin + COX-2 Inhibitor and COX-2 Inhibitor in Patients With Lumbar Spinal Stenosis: Randomized Controlled Trial [NCT03584074]Phase 460 participants (Anticipated)Interventional2018-07-01Not yet recruiting
Psychosocial and Psychophysical Factors Influencing the Effect of Preemptive Systemic Analgesia in Combination With Regional Anesthesia on Postoperative Pain Following Upper Limb Surgery [NCT05248152]90 participants (Anticipated)Interventional2022-01-13Recruiting
Efficacy of Different Doses of Pregabalin as a Multimodal Analgesic Agent in Postoperative Pain Control After Total Knee Arthroplasty - A Randomized Controlled Trial [NCT05447364]Phase 482 participants (Anticipated)Interventional2021-07-01Recruiting
A Phase 2, Randomized, Double-blind, Placebo- and Active-controlled, Parallel-group, Multicenter Study Evaluating the Analgesic Efficacy and Safety of V116517 in Subjects With Moderate to Severe Chronic Pain Due to Postherpetic Neuralgia (PHN) [NCT01688947]Phase 2105 participants (Actual)Interventional2012-09-30Completed
A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Trial Of The Anxiolytic Efficacy Of Pregabalin And Alprazolam IR In Subjects With Anxiety Prior To Dental Procedure [NCT00245609]Phase 290 participants Interventional2006-01-31Completed
DRUG USE INVESTIGATION OF LYRICA(REGULATORY POST MARKETING COMMITMENT PLAN) [NCT01256593]3,827 participants (Actual)Observational2011-02-05Completed
Analgesic Efficacy of Pre-operative Oral Pregabalin in Dacryocystorhinostomy Surgery [NCT05455944]100 participants (Actual)Interventional2020-01-01Completed
Pregablin for Anxiety-comorbidity in Patients With Schizophrenia - a Double-blinded Randomized Placebo Controlled Study [NCT01496690]Phase 454 participants (Actual)Interventional2012-01-31Completed
A Randomized, Open-label, 3-way Crossover Clinical Trial to Compare The Pharmacokinetics of A Pregabalin GLARS Tablet 150mg With Immediate Release Formulation and to Assess The Effect of High Fat Diet in Healthy Male Subjects [NCT01635751]Phase 130 participants (Actual)Interventional2012-10-31Completed
A Randomized, Open-label, Crossover Clinical Trial to Compare The Pharmacokinetics of A Pregabalin GLARS Tablet 150mg and Immediate Release Formulation After Multiple Dosing Under Fed Condition in Healthy Male Subjects [NCT01638273]Phase 124 participants (Actual)Interventional2014-02-28Completed
A Comparison Between Pregabalin and Gabapentin as Adjuvants to Opioids in Elective Lumber Micro Discectomy to Control Postoperative Pain. (A Prospective Randomized Controlled Study) [NCT05539924]Phase 372 participants (Anticipated)Interventional2022-09-15Enrolling by invitation
Pregabalin Versus Gabapentin Efficacy in the Management of Neuropathic Pain Associated With Failed Back Surgery Syndrome [NCT05324761]Phase 460 participants (Actual)Interventional2022-04-25Completed
The Effects of Pregabalin on Acute and Chronic Postoperative Pain After Cardiac Surgery [NCT01701921]Phase 2/Phase 394 participants (Actual)Interventional2011-07-31Completed
Qutenza Versus Pregabalin in Subjects With Peripheral Neuropathic Pain: an Open-label, Randomized, Multicenter, Non-inferiority Efficacy and Tolerability Study [NCT01713426]Phase 4568 participants (Actual)Interventional2012-07-11Completed
Efficacy of Preoperative Pregabalin on the Post-caesarean Pain; a Dose-response Study [NCT01719705]Phase 1135 participants (Actual)Interventional2012-11-30Completed
Efficacy Of Pregabalin In The Treatment Of Pancreatic Cancer Pain. A Randomized Controlled Double-Blind, Parallel Group Study [NCT01768988]Phase 420 participants (Actual)Interventional2012-08-31Terminated(stopped due to Change of PI. Former PI changed from Research Center and Promoter obliged unexpectedly to change the PI.)
Evaluation of the Impact of Subject and Staff Training on the Pregabalin vs. Placebo Difference in Subjects With Painful Diabetic Neuropathy (PDN) [NCT01770964]Phase 490 participants (Anticipated)Interventional2012-12-31Recruiting
A Randomized,Open-label,Six-sequence,Three-period,Three-treatment,Multiple Dosing Clinical Trial to Investigate the Pharmacokinetic Drug Interaction Between Pregabalin and Thioctic Acid After Oral Administration in Healthy Male Volunteers [NCT01808300]Phase 142 participants (Actual)Interventional2013-02-28Completed
Co-analgesic Effects of Dexamethasone and Pregabalin After Lumbar Slipped Disc Surgery [NCT01811251]Phase 3162 participants (Actual)Interventional2012-12-31Completed
Opioid-Induced Hyperalgesia in Prescription Opioid Abusers: Effects of Pregabalin [NCT01821430]Phase 24 participants (Actual)Interventional2013-03-31Terminated(stopped due to poor recruitment)
Efficacy of Pregabalin and Duloxetine in Patients With Painful Diabetic Peripheral Neuropathy (PDPN): the Effect of Pain on Cognitive Function, Sleep and Quality of Life (BLOSSOM) [NCT04246619]Phase 4254 participants (Actual)Interventional2019-11-12Terminated(stopped due to The statistical analysis will still provide relevant results with the same statistical power as initially planned.COVID-19 pandemic prolonged the recruiting period and consequently affected the costs of the clinical trial.)
Pregabalin for the Treatment of Pain After Posterior Spinal Fusions. [NCT01366196]86 participants (Actual)Interventional2008-10-31Completed
Effects of Oral Pregabalin Versus Placebo on Postoperative Pain and Morphine Consumption After Mastectomy [NCT01391858]Phase 380 participants (Actual)Interventional2006-12-31Completed
A Pilot Study at a Single-Institution of Pregabalin in the Management of Mucositis Pain in Patients Undergoing Chemoradiation Therapy to the Head and Neck. [NCT02277548]20 participants (Actual)Interventional2014-05-31Completed
A Randomized, Double-blind, Active-Controlled, Multi-center, Phase 3 Trial to Compare the Safety and Efficacy Between YHD1119 and Pregabalin in Patients With Peripheral Neuropathic Pain [NCT02985216]Phase 3371 participants (Actual)Interventional2017-02-07Completed
A Multiple Dose Pharmacokinetic Open-label Study Of Pregabalin (Lyrica Registered) In Healthy Lactating Women [NCT01727791]Phase 410 participants (Actual)Interventional2012-12-31Completed
A Phase 1, Randomized, Open Label, Single Dose, 5-treatment, 5- Period Crossover Study in Healthy Volunteers to Assess The Safety, Tolerability, and Pharmacokinetics of Four Controlled Release Pregabalin Tablet Formulations Administered Following an Eveni [NCT01443169]Phase 116 participants (Actual)Interventional2012-03-31Completed
PHASE III, Randomized, Double-blind, Placebo-controlled Clinical Trial to Evaluate the Efficacy and Safety of Pregabalin in Prevention and Reduction of Oxaliplatin-induced Painful Neuropathy [NCT01450163]Phase 3200 participants (Actual)Interventional2011-08-31Completed
A Phase 4, Double-Blind, Placebo-Controlled, Crossover Study Comparing Simulated Driving Performance, Daytime Sedation, and Cognition in Healthy Volunteers Taking Therapeutic Doses of Gralise®, Neurontin®, or Lyrica® [NCT03179345]Phase 432 participants (Actual)Interventional2015-09-24Completed
Efficacy of Pre-emptive Different Doses of Oral Pregabalin Versus Celecoxib on Sevoflurane and Analgesic Consumption in Patients Subjected for Elective Lumbar Spine Fixation Surgery: a Randomized Controlled Trial [NCT04342065]Phase 2/Phase 3200 participants (Actual)Interventional2019-01-01Completed
A Randomized, Double-Blind, Placebo- and Active-Controlled Study of the Safety and Efficacy of RGH-896 in Patients With Diabetic Peripheral Neuropathic Pain [NCT00838799]Phase 2458 participants (Actual)Interventional2009-02-28Completed
A Randomized Double Blind Placebo And Active Controlled Parallel Group Phase 2 Study To Evaluate PF-05089771 As A Monotherapy And As An Add-on To Pregabalin For The Treatment Of Painful Diabetic Peripheral Neuropathy [NCT02215252]Phase 2141 participants (Actual)Interventional2014-11-10Completed
SPECIAL INVESTIGATION OF PREGABALIN FOR FIBROMYALGIA [NCT01773993]534 participants (Actual)Observational2013-02-28Completed
Efficacy of Pre-operative Oral Pregabalin in Ambulatory Inguinal Hernia Repair for Post Operative Pain [NCT01450345]Phase 372 participants (Anticipated)Interventional2009-09-30Recruiting
Comparative Study Between Analgesic Effect of Oral Prednisolone and Oral Pregabalin in Management of Post-dural Puncture Headache in Patients Undergoing Lower Limb Surgeries [NCT04662125]63 participants (Actual)Interventional2020-12-10Completed
Confirmatory Study of Efficacy and Safety of the Pregabalin/Tramadol Combination Versus Pregabalin in the Management of Acute Pain of Neuropathic Origin. [NCT05324059]Phase 3110 participants (Actual)Interventional2022-07-11Completed
Effect of Pregabalin Administration on Catheter- Related Bladder Discomfort in Urological Surgical Operations [NCT03229668]Phase 2/Phase 378 participants (Actual)Interventional2017-07-28Completed
Effect of Combination of Duloxetine and Pregabalin to Improve Pain After Liposuction Surgery [NCT04862845]Phase 172 participants (Anticipated)Interventional2021-05-15Not yet recruiting
Comparison Between Multimodal and Unimodal Analgesia in Cholecystectomy [NCT05547659]Phase 1/Phase 295 participants (Actual)Interventional2019-01-01Completed
A Randomized Controlled, Single-blind, Esketamine Adjuvant Therapy for the Efficacy and Safety of Patients With Chronic Visceral Pain Comorbid Major Depressive Disorder [NCT04847245]80 participants (Anticipated)Interventional2021-05-01Not yet recruiting
A Japan Post-Marketing, Randomized, Double-Blind, Parallel-Group, Flexible Dose Comparative Study to Assess the Non-Inferiority of Duloxetine Compared With Pregabalin in Patients With Diabetic Peripheral Neuropathic Pain [NCT02417935]Phase 4304 participants (Actual)Interventional2015-04-30Completed
[NCT01726205]Phase 445 participants (Actual)Interventional2008-10-31Completed
Does Pregabalin Reduce the Sevoflurane Requirement During Laparoscopic Cholecystectomy? Mansoura University Hospitals Experience. [NCT01571804]Phase 242 participants (Actual)Interventional2011-12-31Completed
Systematic Review: Retigabine for Adjunctive Therapy in Partial Epilepsy [NCT01587339]6,498 participants (Actual)Observational2010-09-30Completed
Effects of Perioperative Low-dose Pregabalin on Post-craniotomy Pain: A Two-centre Randomized Controlled Trial [NCT01591980]Phase 40 participants (Actual)Interventional2013-08-31Withdrawn(stopped due to Pfizer Canada and the SMH ORA could not come into an agreement on responsibility to be the Importer of Record for the trial.)
Evaluating the Efficacy and Safety of Pregabalin in Total Knee Arthroplasty Patients With Central Sensitization [NCT05460871]Phase 424 participants (Anticipated)Interventional2023-02-21Recruiting
Peri-incisional Pregabalin for Postoperative Pain Attenuation and Analgesics Spare in Elective Neurosurgical Patients: A Randomized, Comparative, Placebo-controlled, Double Blind Study [NCT01612832]100 participants (Anticipated)Interventional2012-06-30Not yet recruiting
[NCT01614236]100 participants (Anticipated)Interventional2012-07-31Not yet recruiting
A Randomized Placebo-Controlled Study of Whether Pre-operative Pregabalin 150 mg Will Improve Pain Control in Patients With Hepatocellular Carcinoma Undergoing Partial Hepatectomy [NCT01923948]40 participants (Actual)Interventional2013-05-31Completed
Pharmacogenetic Treatment With Anti-Glutaminergic Agents for Comorbid PTSD & AUD [NCT02884908]Phase 3252 participants (Anticipated)Interventional2016-09-30Active, not recruiting
Effect of Two Different Doses of Oral Pregabalin Premedication for Postoperative Pain Relief After Gynecological Surgeries [NCT04708353]90 participants (Anticipated)Interventional2020-08-20Recruiting
Perioperative Pregabalin as Part of a Multimodal Treatment Plan for Pain After Ureteroscopy With Stent Placement: a Pilot [NCT03927781]Phase 310 participants (Actual)Interventional2019-04-01Completed
Comparison of Oral Gabapentin and Pregabalin in Postoperative Pain Control After Photorefractive Keratectomy: a Prospective, Randomized Study. [NCT00954187]8 participants (Actual)Interventional2009-11-30Terminated(stopped due to PI left institution)
A Randomized, Placebo-controlled, Double-blind, Parallel-group, Multicenter Combined Phase 2a/2b Study to Assess the Efficacy and Safety of BAY 1817080 in Patients With Diabetic Neuropathic Pain [NCT04641273]Phase 2154 participants (Actual)Interventional2021-01-22Terminated(stopped due to Lack of efficacy)
Effectiveness of Two Different Doses of BI 1026706 on the Overall Peak-to-Peak (PtP) N2/P2-component Amplitude of Laser (Somatosensory, Radiant-heat) Evoked Potentials (LEP) in UVB (Ultraviolet)-Irradiated Skin in Healthy Male Volunteers (a Single-blinded [NCT02037165]Phase 125 participants (Actual)Interventional2014-01-21Completed
RC11C3, Pilot Placebo-controlled Evaluation of Pregabalin as a Means to Prevent the Paclitaxel-Associated Acute Pain Syndrome [NCT01637077]Phase 246 participants (Actual)Interventional2012-01-31Completed
Combining Pregabalin (LYRICA®) With Lofexidine (LUCEMYRATM): Can it Increase the Success of Transition to Naltrexone? [NCT04218240]Phase 290 participants (Actual)Interventional2020-12-20Completed
Effects of Pre-operative Oral Pregabalin on Post Operative Morphine Consumption After Abdominal Hysterectomy With/Without Salpingo-oophorectomy Under Spinal Anesthesia With Intrathecal Morphine [NCT02285010]Phase 4125 participants (Actual)Interventional2014-11-30Completed
A Randomized Controlled Trial Comparing Pregabalin and Placebo in Patients With Persistent Globus Sensation [NCT05432843]Phase 490 participants (Anticipated)Interventional2010-03-12Recruiting
A Randomized, Placebo-controlled Multi-center Clinical Trial to Evaluate the Efficacy and Safety of Pregabalin for the Treatment of Chronic Prostatitis/Chronic Pelvic Pain Syndrome (CP/CPPS) [NCT00371033]Phase 3318 participants (Anticipated)Interventional2006-03-31Active, not recruiting
A Phase 4 Randomized Double-Blind Double-Dummy Placebo & Active-Controlled Single-Dose Six-Way Crossover Study Evaluating the Abuse Potential of Lyrica® Taken Orally With Oxycodone HCL in Healthy Non-Drug Dependent Recreational Opioid Users [NCT05053126]Phase 460 participants (Actual)Interventional2021-07-27Completed
Investigation of the Effect of Initial Central Sensitization Severity on Treatment Response in Patients With Fibromyalgia [NCT05020600]40 participants (Anticipated)Observational2021-08-19Recruiting
An Open-Label Pilot Study of Pregabalin as Treatment for Alcohol Use Disorder [NCT03256253]Phase 218 participants (Actual)Interventional2018-02-15Completed
MAST Trial: Multi-modal Analgesic Strategies in Trauma [NCT03472469]Phase 41,561 participants (Actual)Interventional2018-04-02Completed
A Clinical Approach to Validate the Biological Significance of LPC16:0 as a Discriminating and Pathogenic Biomarker of Fibromyalgia [NCT04832100]400 participants (Anticipated)Observational2017-08-01Recruiting
Efficacy and Safety of Pregabalin in Treatment of Neuropathic Pain in Patients With Idiopathic Small Fiber Neuropathy [NCT02607254]Phase 211 participants (Actual)Interventional2015-09-30Completed
Comparison Between Single Dose Pregabalin and Magnesium Sulfate in Controlled Hypotension During Functional Endoscopic Sinus Surgery [NCT05442931]Phase 1/Phase 260 participants (Anticipated)Interventional2022-05-01Recruiting
Comparison Between the Effect of Dexmedetomidine, Melatonin and Pregabalin on Hypotensive Anesthesia in Patients Undergoing Functional Endoscopic Sinus Surgery [NCT05829148]Early Phase 1120 participants (Anticipated)Interventional2023-05-01Not yet recruiting
A Randomized Placebo-Controlled Study of Whether Pre-operative Pregabalin 300 mg Will Improve Pain Control in Patients Undergoing Laparoscopic Roux-en-Y Gastric Bypass (Bariatric Surgery) [NCT01801189]Phase 461 participants (Actual)Interventional2013-02-28Completed
Double Blinded, Randomized, Placebo Controlled Study in Evaluating the Role of Pregabalin in Reducing Opioid Requirement in Spinal Fusion Surgeries of Two or More Vertebrae [NCT03031340]Phase 33 participants (Actual)Interventional2012-05-31Terminated(stopped due to Incidence of AE)
A Prospective Randomized Blinded Placebo Controlled Comparison of Multimodal Pre-emptive Analgesia on Long Term Outcome Following Uterine Artery Embolization [NCT01555073]Phase 423 participants (Actual)Interventional2011-10-31Terminated(stopped due to Subjects did not meet inclusion criteria)
A Study Of Pregabalin In The Treatment Of Subjects With Painful Diabetic Peripheral Neuropathy With Background Treatment Of Nsaid For Other Pain Conditions [NCT01455415]Phase 3306 participants (Actual)Interventional2011-12-31Completed
A Randomized, Double-Blind, Placebo and Active Comparator-Controlled Study of DS-5565 for Treatment of Neuropathic Pain Associated With Diabetic Peripheral Neuropathy [NCT01496365]Phase 2452 participants (Actual)Interventional2011-11-28Completed
Prophylaxy of Postoperative Nausea and Vomiting in Patients Undergoing Laparoscopic Surgery [NCT03202459]60 participants (Anticipated)Interventional2017-03-02Recruiting
Pregabalin Effects on Hypotensive Anesthesia During Spine Surgery. [NCT03301025]106 participants (Actual)Interventional2018-01-08Completed
Prevention Effect of Pregabalin on Postherpetic Neuralgia: A Multicenter, Randomized, Double-blind, Controlled Trial [NCT03186443]Phase 3342 participants (Anticipated)Interventional2017-10-01Not yet recruiting
A Double-blind, Placebo-controlled, Parallel-group, Multicenter Study Of The Efficacy And Safety Of Pregabalin As Adjunctive Therapy In Children 1 Month Through <4 Years Of Age With Partial Onset Seizures [NCT02072824]Phase 3175 participants (Actual)Interventional2014-09-16Completed
[NCT02340455]0 participants (Actual)Interventional2014-12-31Withdrawn(stopped due to To rebalance the study plan because it is not desirable to set up comparators using placebo.)
The Effect of Pregabalin on Post-operative Pain and Opioid Consumption in Spine Surgery, a Prospective, Randomized, Controlled Study [NCT05083793]Phase 290 participants (Anticipated)Interventional2020-04-01Enrolling by invitation
National, Multicentre, Randomized, Double-blind, Double-dummy Phase III Clinical Trial to Evaluate the Efficacy and Safety of Praga Formulation in the Treatment of Neuropathic Pain [NCT04666714]Phase 3136 participants (Anticipated)Interventional2023-07-31Not yet recruiting
Pharmacovigilance in Gerontopsychiatric Patients [NCT02374567]Phase 3407 participants (Actual)Interventional2015-01-31Terminated
Efficacy, Safety and Tolerability of Multiple Doses of Oral Cebranopadol in Subjects With Moderate to Severe Chronic Pain Due to Diabetic Peripheral Neuropathy. [NCT01939366]Phase 2699 participants (Actual)Interventional2013-09-27Completed
A Double Blind, Double Dummy, Randomized, Placebo-controlled, 5 Period Cross-over Study To Examine The Effect Of Pf-05089771 Alone And In Combination With Pregabalin On Evoked Pain Endpoints In Healthy Volunteers Using Pregabalin And Ibuprofen As Positive [NCT02349607]Phase 125 participants (Actual)Interventional2015-01-31Completed
A Randomized, Open, Single-dose, 3-treatment, 3-period, 6-sequence Crossover Study in Healthy Male Subjects to Evaluate the Pharmacokinetics of GLA5PR GLARS-NF1 Tablet 150mg and LYRICA® Capsule 75mg [NCT02326987]Phase 130 participants (Actual)Interventional2013-10-31Completed
Efficacy of Variable Doses of Pregabalin Vs Duloxetine in Diabetic Peripheral Neuropathic Pain: A Comparative Study [NCT05292066]Early Phase 1126 participants (Anticipated)Interventional2022-10-31Not yet recruiting
A Randomized, Double-Blind, Placebo-Controlled, Single Center Study Designed to Assess the Effects of Pregabalin on Change in Patients With Diabetic Neuropathy [NCT00573261]Phase 440 participants (Actual)Interventional2006-03-31Completed
Population Pharmacokinetics of Antiepileptic in Pediatrics [NCT03196466]1,000 participants (Anticipated)Observational2017-06-19Recruiting
Effectiveness of Adding Duloxetine to Pregabalin in Treatment of Acute Postoperative and Prevention of Chronic Pain Following Thoracotomy Surgeries; Randomized Controlled Study [NCT04782310]Phase 475 participants (Anticipated)Interventional2021-03-10Recruiting
The Effect of Adding Pregabalin to the Analgesic Effect of Intravenous Morphine in Patients With Multiple Fracture Ribs [NCT03473093]Early Phase 180 participants (Anticipated)Interventional2018-03-31Not yet recruiting
Prospective Controlled Crossover Study of the Role of Pentoxifylline in the Management of Lumbar Radiculopathy [NCT03060434]Phase 467 participants (Actual)Interventional2018-06-01Active, not recruiting
Multimodal Opioid-free Anesthesia Versus Opioid-based Anesthesia for Patients Undergoing Cardiac Valve Surgeries: A Randomized Controlled Trial [NCT04648540]Early Phase 160 participants (Actual)Interventional2020-12-01Completed
A RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED, PARALLEL GROUP, MULTI-CENTER TRIAL OF PREGABALIN AS ADJUNCTIVE THERAPY IN PEDIATRIC AND ADULT SUBJECTS WITH PRIMARY GENERALIZED TONIC-CLONIC SEIZURES - PROTOCOL A0081105 [NCT01747915]Phase 3219 participants (Actual)Interventional2013-04-03Completed
A Randomized, Double-Blind, Placebo-Controlled Crossover Study to Evaluate the Preliminary Efficacy of AZD5213 in Combination With Pregabalin in Subjects With Painful Diabetic Neuropathy and Good Pain Reporting Ability [NCT01928381]Phase 2150 participants (Actual)Interventional2013-11-30Completed
A Randomized Double Blind Placebo Controlled Parallel Group Study Of The Efficacy And Safety Of Pregabalin (Bid) In Subjects With Post-traumatic Peripheral Neuropathic Pain [NCT01701362]Phase 3542 participants (Actual)Interventional2012-10-31Completed
Duloxetine Versus Pregabalin for Alcohol Dependence [NCT00929344]Phase 2150 participants (Actual)Interventional2009-07-31Completed
Perioperative Administration of Pregabalin for Pain After Mastectomy [NCT00938548]Phase 470 participants (Actual)Interventional2009-06-30Completed
[NCT01675986]Phase 2306 participants (Actual)InterventionalCompleted
Efficacy and Safety of Pregabalin and Alpha-lipoic Acid Combination Versus Each Monotherapy in Patients With Diabetic Peripheral Neuropathy: a Randomized, Parallel, Open-label, Multicenter, Phase IV Clinical Trial (OPTIMUM Trial) [NCT04846673]Phase 4150 participants (Anticipated)Interventional2021-05-14Recruiting
Multicenter, Randomized, Open-label, Parallel Group, Phase IV Study to Compare the Efficacy and Safety of Gabapentin/B-complex Versus Pregabalin in the Management of Diabetic Peripheral Neuropathic Pain [NCT01364298]Phase 4353 participants (Actual)Interventional2011-04-30Completed
A Randomized, Double-blinded, Placebo-controlled Study Evaluating the Efficacy and Safety of 6-week Treatment of Pregabalin Against Frequent Muscle Cramp in Patients With Liver Cirrhosis [NCT01271660]Phase 360 participants (Actual)Interventional2011-07-31Completed
Efficacy of Pregabalin for the Treatment of Acute Herpetic Neuralgia and for the Prevention of Post Herpetic Neuralgia- a Randomized Controlled Trial [NCT03809702]Phase 482 participants (Actual)Interventional2018-07-15Completed
Effect of Pregabalin on Colonic Motor and Sensory Function in Adults With Irritable Bowel Syndrome With Predominant Constipation [NCT01331213]Phase 418 participants (Actual)Interventional2011-04-30Completed
Efficacy of Pregabalin on Chronic Cough: A Double Blind, Randomized Control Trial Comparing Pregabalin With Placebo in Patients With Non-asthmatic Chronic Cough [NCT02482818]Phase 1/Phase 240 participants (Anticipated)Interventional2015-09-30Recruiting
Role of Preoperative Oral Pregabalin in Reducing Inhalational Anesthetic Requirements in Elective Abdominal Hysterectomy Under General Anesthesia: A Randomized Controlled Trial [NCT03302208]Phase 350 participants (Actual)Interventional2017-06-29Completed
A Randomized, Double-blind, Placebo-controlled Multicenter Study to Assess Efficacy and Safety of Pregabalin in Willis-Ekbom Disease/Restless Legs Syndrome [NCT04161027]Phase 3116 participants (Actual)Interventional2020-02-24Completed
Effects of Pre-operative Pregabalin and Ketamine to Prevent Development of Phantom Pain in Patients Undergoing Lower Extremity Amputation [NCT02311777]Phase 30 participants (Actual)Interventional2015-05-15Withdrawn(stopped due to Preoperative period is very short time)
Evaluation of the Effectiveness, Safety, and Tolerability of Tapentadol PR Versus a Combination of Tapentadol PR and Pregabalin in Subjects With Severe Chronic Low Back Pain With a Neuropathic Pain Component [NCT01352741]Phase 4622 participants (Actual)Interventional2011-03-31Completed
Exploration the Therapeutic Mechanism of Ba-Duan-Jin in the Treatment of Fibromyalgia by Improving Intestinal Microecology [NCT03890133]60 participants (Anticipated)Interventional2019-04-01Recruiting
Esketamine Combined With Pregabalin on Chronic Postsurgical Pain in Patients Undergoing Primary Spinal Tumor Surgery. [NCT06117917]Phase 2/Phase 3150 participants (Anticipated)Interventional2023-11-10Not yet recruiting
A Multicenter, Randomized, Double-Blind, Double-Dummy , Pregaballin-Controlled, Phase 2 Study to Evaluate the Efficacy and Safety of HSK16149 Capsules in Chinese Patients With Herpetic Neuralgia [NCT05763550]Phase 2331 participants (Actual)Interventional2023-02-27Completed
Comparison of Pain and Comfort in Patients Following Cardiac Surgery: Opioid- Morphine Managed Versus Multimodal Pain-management [NCT04987372]Phase 4100 participants (Actual)Interventional2019-01-21Completed
Evaluation of the Efficacy, Tolerability, and Safety of 7 Days of Treatment With GRT6010 or Pregabalin in Comparison to Placebo in Subjects With Peripheral Neuropathic Pain. [NCT01485094]Phase 2114 participants (Actual)Interventional2012-02-29Terminated(stopped due to The trial was early terminated after it was concluded that there was no added benefit from exposing further participants after an unblinded interim analysis.)
A Randomized, Double-Blind, Placebo- and Active-Controlled Study of DS-5565 for Treatment of Pain Associated With Fibromyalgia [NCT02146430]Phase 31,293 participants (Actual)Interventional2014-10-27Completed
A Phase 1, Single-Center, Randomized, Placebo-Controlled, Ascending Single-Dose Study of the Pharmacokinetics, Safety, and Tolerability of Oral XG005 in Healthy Volunteers [NCT04499209]Phase 150 participants (Actual)Interventional2017-10-16Completed
A Randomized, Double-Blind, Placebo- and Active-Controlled Study of DS-5565 for Treatment of Pain Associated With Fibromyalgia [NCT02187159]Phase 31,270 participants (Actual)Interventional2014-11-30Completed
A Phase III, Randomized, Double-Blind, Placebo-Controlled Evaluation of Pregabalin for Alleviating Hot Flashes [NCT00702949]Phase 3207 participants (Actual)Interventional2008-06-30Completed
Effect of Pregabalin on Immediate Post-operative and Longterm Pain and Spinal Cord Monitoring in Children Undergoing Instrumented Spinal Surgery. [NCT02464813]Phase 464 participants (Actual)Interventional2015-08-01Completed
A Randomized, Open-label, Phase I Clinical Trial to Evaluate the Pharmacokinetic Characteristics and Safety/Tolerability of YNP-1807 Compared to Lyrica® After Oral Administration in Healthy Adult Volunteers: Part I- Single Dosing/Part II- Multiple Dosing [NCT03261427]Phase 117 participants (Actual)Interventional2017-09-14Completed
Effect of Pregabalin Administration on Catheter- Related Bladder Discomfort in Orthopedic Surgical Operations [NCT03232021]Phase 2/Phase 30 participants (Actual)Interventional2017-08-16Withdrawn(stopped due to All patients during the study period were subjected to peripheral blocks or were excluded from the study due to exclusion criteria)
Can Pregabalin Reduce the Frequency and Severity of Dry Eye Symptoms After Laser-assisted in Situ Keratomileusis? [NCT02701764]Phase 2/Phase 343 participants (Actual)Interventional2016-07-26Completed
A Randomized, Double-Blind, Placebo- and Active-Controlled Study of DS-5565 for Treatment of Pain Associated With Fibromyalgia [NCT02187471]Phase 31,301 participants (Actual)Interventional2015-01-16Completed
A Randomized Double Blind Placebo Controlled Parallel Group Study Of The Efficacy And Safety Of Concomitant Administration Of Celecoxib And Pregabalin Compared With Celecoxib Monotherapy, In Patients With Chronic Low Back Pain Having A Neuropathic Compone [NCT01838044]Phase 4180 participants (Actual)Interventional2013-10-31Terminated(stopped due to Recruitment terminated on 3Apr2015 due to slow recruitment rate and lack of operational feasibility. Study was not terminated for reasons of safety/efficacy.)
Patient Assisted Intervention for Neuropathy: Comparison of Treatment in Real Life Situations (PAIN-CONTRoLS) [NCT02260388]Phase 4402 participants (Actual)Interventional2014-10-31Completed
NEP-TUNE: Neuropathic Pain - Treatment With Pregabalin Under Real-life Conditions In Denmark [NCT01524796]128 participants (Actual)Observational2012-01-31Completed
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

TrialOutcome
NCT00141219 (23) [back to overview]Medical Outcome Study (MOS) Awaken Short of Breath or Headache
NCT00141219 (23) [back to overview]Daily Pain Rating Scale (DPRS)- Number of 30% Responders (With Respect to Pain Scores)
NCT00141219 (23) [back to overview]Hospital Anxiety and Depression Scale- Anxiety (HADS-A) Score
NCT00141219 (23) [back to overview]Patient Global Impression of Change (PGIC)
NCT00141219 (23) [back to overview]Medical Outcome Study (MOS) Optimal Sleep: Number of Participants With Optimal Sleep
NCT00141219 (23) [back to overview]Mean Sleep Score as Computed by DSIS.
NCT00141219 (23) [back to overview]Daily Pain Rating Scale (DPRS)- Weekly Mean Pain Score
NCT00141219 (23) [back to overview]Duration Adjusted Average Change (DAAC) of (Unadjusted) Mean Pain Score
NCT00141219 (23) [back to overview]Euro Quality of Life (EQ-5D) Visual Analog Scale (VAS)
NCT00141219 (23) [back to overview]Euro Quality of Life (QOL) (EQ-5D) Utility Score
NCT00141219 (23) [back to overview]Hospital Anxiety and Depression Scale- Depression (HADS-D) Score
NCT00141219 (23) [back to overview]Medical Outcome Study (MOS) Overall Sleep Problems Index
NCT00141219 (23) [back to overview]Medical Outcome Study (MOS) Sleep Adequacy
NCT00141219 (23) [back to overview]Duration Adjusted Average Change (DAAC) of (Adjusted) Mean Pain Score
NCT00141219 (23) [back to overview]Daily Pain Rating Scale (DPRS)- Mean Pain Scores (Evaluable Population)
NCT00141219 (23) [back to overview]Daily Pain Rating Scale (DPRS)- Mean Pain Score (ITT Population)
NCT00141219 (23) [back to overview]Medical Outcome Study (MOS) Sleep Disturbance
NCT00141219 (23) [back to overview]Daily Pain Rating Scale (DPRS)- Number of 50% Responders (With Respect to Pain Scores)
NCT00141219 (23) [back to overview]Medical Outcome Study (MOS) Sleep Quantity
NCT00141219 (23) [back to overview]Medical Outcome Study (MOS) Snoring Score
NCT00141219 (23) [back to overview]Mean Sleep Interference Score Based on Daily Sleep Interference Scale (DSIS).
NCT00141219 (23) [back to overview]Medical Outcome Study (MOS) Somnolence
NCT00141219 (23) [back to overview]Clinical Global Impression of Change (CGIC)
NCT00219544 (19) [back to overview]Change in Euro Quality of Life (EQ-5D) Health State Profile and Visual Analog Scale Components
NCT00219544 (19) [back to overview]Change in Hospital Anxiety and Depression Scale Responses
NCT00219544 (19) [back to overview]Change in Modified Brief Pain Inventory (mBPI) for Pain Interference or Pain Severity.
NCT00219544 (19) [back to overview]Change in Pain Scores During Double Blind Treatment Phase
NCT00219544 (19) [back to overview]Change in Pain Treatment Satisfaction Scale (PTSS)
NCT00219544 (19) [back to overview]Change in Sleep Interference Scores During Double Blind Treatment Phase
NCT00219544 (19) [back to overview]Number of Subjects With >= 30% Reduction in Mean Pain Score During Single-blind Treatment
NCT00219544 (19) [back to overview]Patient Global Impression of Change (PGIC) Categories by Number of Subjects
NCT00219544 (19) [back to overview]Weekly Mean Pain Scores During the Double Blind Treatment Phase
NCT00219544 (19) [back to overview]Weekly Mean Pain Scores During the Single-blind Treatment Phase
NCT00219544 (19) [back to overview]Weekly Mean Sleep Interference Scores During the Double Blind Treatment Phase
NCT00219544 (19) [back to overview]Weekly Mean Sleep Interference Scores During the Single-Blind Treatment Phase
NCT00219544 (19) [back to overview]Mean Pain Score for Non-responders at End of Single-blind Treatment Phase
NCT00219544 (19) [back to overview]Mean Pain Score for Responders at End of Single-blind Treatment Phase. Change From Baseline of Mean of Last 7 Available Pain Scores From Daily Pain Diary While on Single-blind Treatment.
NCT00219544 (19) [back to overview]Mean Sleep Interference Score
NCT00219544 (19) [back to overview]Neuropathic Pain in Subjects With Peripheral Neuropathic Pain Conditions During the Double-blind Phase
NCT00219544 (19) [back to overview]Time to Meaningful Increase in Pain During Double-blind Treatment Phase (Number of Participants)
NCT00219544 (19) [back to overview]Categorized Daily Pain Score
NCT00219544 (19) [back to overview]Intensity of Neuropathic Pain -Visual Analog Scale (NeP - VAS)
NCT00232141 (33) [back to overview]Change in Neuropathic Pain Symptom Inventory (NPSI) Subscores and Total Intensity Scores
NCT00232141 (33) [back to overview]Gracely Pain Scale Score
NCT00232141 (33) [back to overview]Change From Baseline for MOS (Medical Outcomes Study)-Sleep Subscales and Sleep Problem Indices
NCT00232141 (33) [back to overview]Change From Baseline for Hospital Anxiety and Depression Scale (HADS) Subscales
NCT00232141 (33) [back to overview]Change From Baseline for Modified Brief Pain Inventory-Short Form (mBPI-sf) Scores
NCT00232141 (33) [back to overview]Change in Quantitative Assessment of Neuropathic Pain (QANeP)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Sleep)
NCT00232141 (33) [back to overview]Categorized Patient Global Impression of Change (PGIC)
NCT00232141 (33) [back to overview]Change From Baseline for NRS-Sleep Interference Scores
NCT00232141 (33) [back to overview]Change From Baseline for Numerical Rating Scale (NRS) Pain Scores at Endpoint-LOCF (Last Observation Carried Forward) Relative to Baseline
NCT00232141 (33) [back to overview]Change in Number of Pain Attacks Compared to Baseline - NPSI (Neuropathic Pain Symptom Inventory)
NCT00232141 (33) [back to overview]Change in NRS-Sleep Interference Scores
NCT00232141 (33) [back to overview]Change in NRS-Pain Scores From Baseline to Endpoint-BOCF (Modified Baseline Observation Carried Forward)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-short Form (BPI-sf) Scores (The Worst Pain in the Past 24 Hours)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (The Least Pain in the Past 24 Hours)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (How Much Pain Are You Having Right Now)
NCT00232141 (33) [back to overview]Duration of Spontaneous Pain-NPSI (Neuropathic Pain Symptom Inventory)
NCT00232141 (33) [back to overview]Patient Global Impression of Change (PGIC) Rating
NCT00232141 (33) [back to overview]Quantitative Assessments of Neuropathic Pain (QANeP) Maximum Sensory Thresholds : Shift Table
NCT00232141 (33) [back to overview]Quantitative Assessments of Neuropathic Pain (QANeP) Median Sensory Thresholds : Shift Table
NCT00232141 (33) [back to overview]Responders - Decreases of at Least 30% in Mean Weekly Pain Score
NCT00232141 (33) [back to overview]Responders- Decreases of at Least 50% in Mean Weekly Pain Score
NCT00232141 (33) [back to overview]Shift in Hospital Anxiety and Depression (HADS) Subscales
NCT00232141 (33) [back to overview]Shift Table in NPSI (Neuropathic Pain Symptom Inventory)- Number of Pain Attacks
NCT00232141 (33) [back to overview]Shift Table NPSI (Neuropathic Pain Symptom Inventory) - Duration of Spontaneous Pain
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Walking Ability)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Mood)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Relations With Other People)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Normal Work Including Both Work Outside the Home and Housework)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your General Activity)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Enjoyment of Life)
NCT00232141 (33) [back to overview]Change in Brief Pain Inventory-sf Scores (Average Level of Pain in the Past 24 Hours)
NCT00232141 (33) [back to overview]Duration Adjusted Average Change From Baseline in NRS Pain Scores
NCT00264875 (1) [back to overview]Mean Visual Analogue Scale (VAS) Pain Scores
NCT00280059 (18) [back to overview]Exit Due to Any Reason After 4-week Dose Escalation Phase
NCT00280059 (18) [back to overview]Exit Due to Lack of Efficacy After 4-week Dose Escalation Phase
NCT00280059 (18) [back to overview]Exit for Any Reason During the Double-blind Treatment Phase (Including Dose Escalation Phase)
NCT00280059 (18) [back to overview]Percentage of Participants Who Achieved at Least 6 Consecutive Months of Seizure Freedom (Responders) by Final Dosage Levels and Treatment Group
NCT00280059 (18) [back to overview]Percentage of Seizure-free Participants (Responders) During Efficacy Assessment Phase
NCT00280059 (18) [back to overview]Time to First Seizure After the 4-Week Dose Escalation Phase
NCT00280059 (18) [back to overview]Mean Monthy Seizure Frequency of Responders for the Months After Achieving 6 Consecutive Months of Seizure Freedom: All Partial Seizures
NCT00280059 (18) [back to overview]Mean Monthy Seizure Frequency of Responders for the Months After Achieving 6 Consecutive Months of Seizure Freedom: All Seizures
NCT00280059 (18) [back to overview]Mean Monthy Seizure Frequency: All Partial Seizures
NCT00280059 (18) [back to overview]Mean Monthy Seizure Frequency: All Seizures
NCT00280059 (18) [back to overview]Time to 6 Consecutive Months of Seizure-freedom After 4-week Dose Escalation Phase: All Seizures
NCT00280059 (18) [back to overview]Median Monthy Seizure Frequency of Responders for the Months After Achieving 6 Consecutive Months of Seizure Freedom: All Partial Seizures
NCT00280059 (18) [back to overview]Exit Due to Adverse Events During the Double-blind Treatment Phase (Including Dose Escalation Phase)
NCT00280059 (18) [back to overview]Change From Baseline to Week 56 in Hospital Anxiety and Depression Scale (HADS)
NCT00280059 (18) [back to overview]Median Monthy Seizure Frequency: All Seizures
NCT00280059 (18) [back to overview]Median Monthy Seizure Frequency: All Partial Seizures
NCT00280059 (18) [back to overview]Median Monthy Seizure Frequency of Responders for the Months After Achieving 6 Consecutive Months of Seizure Freedom: All Seizures
NCT00280059 (18) [back to overview]Medical Outcomes Study Sleep Scale (MOS-SS): Optimal Sleep Subscale
NCT00288639 (14) [back to overview]Number of Subjects With a Weight Gain at End of Treatment of at Least 7% Relative to Baseline
NCT00288639 (14) [back to overview]Percentage Change in Partial Seizure Frequency (All Partial Seizure Types) Between the 8 Week Baseline Period and 4 Week Intervals During the 21 Week Open-label Treatment Period.
NCT00288639 (14) [back to overview]Reduction in Partial Seizure Frequency Between Baseline and the Final 4 Weeks of the Observation Period.
NCT00288639 (14) [back to overview]Subjects Achieving Seizure Freedom During Observation Period
NCT00288639 (14) [back to overview]Subjects Assessment of Optimal Sleep
NCT00288639 (14) [back to overview]Subjects With Categorical Impression of Change in Overall Status Using the Clinical Global Impression of Change (CGIC)
NCT00288639 (14) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale(HADS) Depression and Anxiety Symptoms Subscales Between Baseline and Week 21.
NCT00288639 (14) [back to overview]Percentage Change in Partial Seizure Frequency (All Partial Seizure Types) Between Baseline and the 12 Week Observation Period
NCT00288639 (14) [back to overview]Percentage Change in Partial Seizure Frequency (All Partial Seizure Types) Between Baseline and the Whole 21 Week Open-label Treatment Period.
NCT00288639 (14) [back to overview]Change in Partial Seizure Frequency (All Partial Seizure Types) Between Baseline and the 12 Week Observation Period Categorized by Baseline Seizure Frequency
NCT00288639 (14) [back to overview]Change in Partial Seizure Frequency by Type Between the 8 Week Baseline Period and During the 12 Week Observation Period.
NCT00288639 (14) [back to overview]Changes From Baseline in Medical Outcomes Study (MOS) Sleep Scale Scores
NCT00288639 (14) [back to overview]Impression of Change in Overall Status Using the Patient Global Impression of Change (PGIC)
NCT00288639 (14) [back to overview]Number of Subjects Seizure-free
NCT00292188 (27) [back to overview]Davidson Trauma Scale (DTS): Severity
NCT00292188 (27) [back to overview]Clinical Global Impression of Change (CGIC)
NCT00292188 (27) [back to overview]Hospital Anxiety and Depression Scale (HADS) Anxiety Score - FAS Subset With Moderate/Severe Baseline Scores
NCT00292188 (27) [back to overview]Hospital Anxiety and Depression Scale (HADS) Anxiety Score
NCT00292188 (27) [back to overview]Weekly Mean Pain Score at End of Treatment (Week 8) From Daily Pain Diary
NCT00292188 (27) [back to overview]Weekly Mean Pain Score From Daily Pain Diary
NCT00292188 (27) [back to overview]Patient Global Impression of Change (PGIC)
NCT00292188 (27) [back to overview]Number of Subjects With 30% and 50% Response in Weekly Mean Daily Pain Rating Score (DPRS) From Baseline Until Endpoint (Week 8)
NCT00292188 (27) [back to overview]Pain Treatment Satisfaction Scale (PTSS): Satisfaction With Current Pain Medication
NCT00292188 (27) [back to overview]Pain Treatment Satisfaction Scale (PTSS): Medication Characteristics
NCT00292188 (27) [back to overview]Pain Treatment Satisfaction Scale (PTSS): Impact of Current Pain Medication
NCT00292188 (27) [back to overview]Pain Treatment Satisfaction Scale (PTSS): Efficacy
NCT00292188 (27) [back to overview]Modified Brief Pain Inventory Short Form (m-BPI-sf)
NCT00292188 (27) [back to overview]Medical Outcome Study (MOS) Sleep Subscales
NCT00292188 (27) [back to overview]Medical Outcome Study Cognitive Subscale (MOS-Cog); Attention
NCT00292188 (27) [back to overview]Medical Outcome Study Cognitive Subscale (MOS-Cog); Concentration
NCT00292188 (27) [back to overview]Medical Outcome Study Cognitive Subscale (MOS-Cog); Confusion
NCT00292188 (27) [back to overview]Medical Outcome Study Cognitive Subscale (MOS-Cog); Memory
NCT00292188 (27) [back to overview]Medical Outcome Study Cognitive Subscale (MOS-Cog); Reasoning
NCT00292188 (27) [back to overview]Medical Outcome Study Cognitive Subscale (MOS-Cog); Thinking
NCT00292188 (27) [back to overview]Weekly Mean Sleep Interference Score
NCT00292188 (27) [back to overview]Neuropathic Pain Symptom Inventory (NPSI) Total Intensity Score
NCT00292188 (27) [back to overview]Medical Outcome Study (MOS) Optimal Sleep
NCT00292188 (27) [back to overview]Davidson Trauma Scale (DTS): Total Score
NCT00292188 (27) [back to overview]Hospital Anxiety and Depression Scale (HADS) Depression Score - FAS Subset With Moderate/Severe Baseline Scores
NCT00292188 (27) [back to overview]Hospital Anxiety and Depression Scale (HADS) Depression Score
NCT00292188 (27) [back to overview]Davidson Trauma Scale (DTS): Frequency
NCT00310765 (2) [back to overview]Improved Sleep Scores
NCT00310765 (2) [back to overview]Absolute Adhesional Abdominal Pain Score Assessed at Baseline Through Week 12 in Patients Treated With Pregabalin 150-300 mg Daily Compared With Patients Given Look Alike Placebo
NCT00313820 (16) [back to overview]Euro Quality of Life (EQ-5D)- Health State Profile Utility Score
NCT00313820 (16) [back to overview]Quantitative Assessment of Neuropathic Pain (QANeP) - Sensory Threshold
NCT00313820 (16) [back to overview]Short Form-McGill Pain Questionnaire (SF-MPQ Visual Analog Scale [VAS]) - Part B Only
NCT00313820 (16) [back to overview]Weekly Mean Sleep Interference Score From Daily Sleep Diary (Daily Sleep Interference Scale [DSIS])
NCT00313820 (16) [back to overview]QANeP - Pain Rating Scales
NCT00313820 (16) [back to overview]Pain Score as Measured by DPRS
NCT00313820 (16) [back to overview]Medical Outcome Study (MOS) Sleep Scale
NCT00313820 (16) [back to overview]Neuropathic Pain Symptom Inventory (NPSI)
NCT00313820 (16) [back to overview]Number of Subjects With at Least a 30% Reduction From Baseline in Mean Pain Score at Endpoint
NCT00313820 (16) [back to overview]Number of Subjects With Yes or No Response for Medical Outcome Study (MOS) Sleep Scale - Optimal Sleep
NCT00313820 (16) [back to overview]Number of Subjects With at Least a 50% Reduction From Baseline in Mean Pain Score at Endpoint
NCT00313820 (16) [back to overview]Mean Pain Score at Endpoint as Measured by Daily Pain Rating Scale (DPRS)
NCT00313820 (16) [back to overview]Patient Global Impression of Change (PGIC)
NCT00313820 (16) [back to overview]EQ-5D - VAS
NCT00313820 (16) [back to overview]Hospital Anxiety and Depression Scale (HADS) - ITT Population
NCT00313820 (16) [back to overview]Clinical Global Impression of Change (CGIC)
NCT00333866 (13) [back to overview]Change From Baseline in Weekly Mean Sleep Quality Score
NCT00333866 (13) [back to overview]Change From Baseline in Short Form-36 (SF-36) Health Survey at Week 14
NCT00333866 (13) [back to overview]Change From Baseline in Medical Outcomes Study (MOS): Sub-scales at Week 14
NCT00333866 (13) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale (HADS) at Week 14
NCT00333866 (13) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) Subscale Scores at Week 14
NCT00333866 (13) [back to overview]Percentage of Participants With Optimal Sleep Assessed Using MOS-SS
NCT00333866 (13) [back to overview]Change From Baseline in Pain Visual Analogue Scale (VAS) Scores at Week 14
NCT00333866 (13) [back to overview]Change From Baseline in Mean Sleep Quality Score at Endpoint (Up to Week 14)
NCT00333866 (13) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) Total Scores at Week 14
NCT00333866 (13) [back to overview]Change From Baseline in Mean Pain Score at Endpoint (Up to Week 14)
NCT00333866 (13) [back to overview]Total Daily Acetaminophen Dose
NCT00333866 (13) [back to overview]Change From Baseline in Multidimensional Assessment of Fatigue (MAF) at Week 14
NCT00333866 (13) [back to overview]Patient Global Impression of Change (PGIC)
NCT00346034 (2) [back to overview]Change From Baseline to Week 12 in Pain Visual Analog Scale (VAS) Score
NCT00346034 (2) [back to overview]Change From Baseline to Week 4 in Pain Visual Analog Scale (VAS) Score
NCT00351611 (3) [back to overview]Change From Baseline in Mean Deviation Score From Humphrey Threshold Test at Week 12 or Early Termination
NCT00351611 (3) [back to overview]Change From Baseline in Visual Acuity at Week 12 or Early Termination
NCT00351611 (3) [back to overview]Percentage of Participants With a Decrease (p<0.05) From Baseline in Threshold Value in Any 5 or More Points in Humphrey 24-2 Swedish Interactive Threshold Algorithm (SITA) Standard Testing at Week 12 or Early Termination
NCT00353704 (2) [back to overview]Mean VAS Pain (Visual Analogue Scale)at Rest (0-100 mm)
NCT00353704 (2) [back to overview]Morphine (Opioid) Consumption Cumulated
NCT00368745 (10) [back to overview]Mean Change From Baseline in Digit Symbol Substitution Test (DSST) Scores
NCT00368745 (10) [back to overview]Number of Subjects at Endpoint (Post Alprazolam Free Week 6 or Last Observation Carried Forward [LOCF] Post Alprazolam Free Week 1) Who Are Benzodiazepine Free
NCT00368745 (10) [back to overview]Number of Subjects in Relapse Free State at 6-week Benzodiazepine-free Endpoint (Alprazolam Free Week 6)
NCT00368745 (10) [back to overview]Time to Discontinuation
NCT00368745 (10) [back to overview]Time to First Use of Rescue Medication
NCT00368745 (10) [back to overview]Mean Change From Baseline in Clinical Global Impression Severity (CGI-S) Scale Scores.
NCT00368745 (10) [back to overview]Mean Change From Baseline in Hamilton Anxiety Scale (HAM-A) Scores
NCT00368745 (10) [back to overview]Mean Scores for Clinical Global Impression-Improvement (CGI-I) Scale
NCT00368745 (10) [back to overview]Mean Scores for Patient Global Impression-Improvement (PGI-I)
NCT00368745 (10) [back to overview]Mean Scores Physician's Withdrawal Checklist (PWC)
NCT00372528 (2) [back to overview]Mean Number of Seizures
NCT00372528 (2) [back to overview]Number of Participants With Treatment-Emergent Adverse Events (AEs) or Serious Adverse Events (SAEs)
NCT00380874 (6) [back to overview]Duration Adjusted Average Change (DAAC) of Paresthesia From the Onset of Chemotherapy Measured by Numeric Rating Scale (NRS)
NCT00380874 (6) [back to overview]Number of Participants With Persistent Paresthesic, Dysesthesic, and Pain Symptoms
NCT00380874 (6) [back to overview]Duration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)
NCT00380874 (6) [back to overview]Duration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)
NCT00380874 (6) [back to overview]Duration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)
NCT00380874 (6) [back to overview]Change in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline Cycle
NCT00381095 (8) [back to overview]DAAC From Baseline in Daily Worst Pain, Day 1 to End of Dose Adjustment
NCT00381095 (8) [back to overview]DAAC From Baseline in Daily Worst Pain, Days 1 Through 28
NCT00381095 (8) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale (HADS) at Week 4
NCT00381095 (8) [back to overview]Change From Baseline in mBPI-sf Interference Index Score at Week 4
NCT00381095 (8) [back to overview]Change From Baseline in Modified Brief Pain Inventory (mBPI-sf) Pain Severity Index Score at Week 4
NCT00381095 (8) [back to overview]Patient Global Impression of Change (PGIC)
NCT00381095 (8) [back to overview]DAAC From Baseline in Daily Worst Pain 14 Days After Fixed Dosing Date Up to Day 28
NCT00381095 (8) [back to overview]Duration Adjusted Average Change (DAAC) From Baseline in Daily Worst Pain, Fixed Dosing Date to Day 28
NCT00385671 (48) [back to overview]Number of Participants With Treatment-Emergent Elevated Heart Rate
NCT00385671 (48) [back to overview]Number of Participants With a ≥ 2-points Reduction on the Weekly Average of the Daily 24-hour Average Pain Scale at 12 Weeks
NCT00385671 (48) [back to overview]Number of Participants With ≥ 30% Reduction in the Weekly Mean 24 Hour Average Pain Score at 12 Weeks
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Weekly Mean of the Daily Worst Pain Severity Score
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Weekly Mean of Nighttime Pain Severity
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Weekly Mean of Daily 24 Hour Average Pain Score, Pregabalin Compared With Duloxetine
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Weekly Mean of Daily 24 Hour Average Pain Score, Duloxetine Compared With Duloxetine+Gabapentin
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Heart Rate
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Body Weight
NCT00385671 (48) [back to overview]Time to First ≥ 30% Reduction in Weekly Mean 24 Hour Average Pain Score
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Normal Work
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Beck Depression Inventory II (BDI-II) Total Score
NCT00385671 (48) [back to overview]Weekly Mean Change in 24 Hour Average Pain Severity by Week by Gabapentin Exposure Subgroup (de Novo Versus Prior Use)
NCT00385671 (48) [back to overview]Summary of Adverse Events and Serious Adverse Events Leading to Discontinuation
NCT00385671 (48) [back to overview]Path Analysis of Improvement in Pain Through Improvement in Depressive Symptoms
NCT00385671 (48) [back to overview]Number of Patients With Treatment-Emergent Elevated Laboratory Analytes
NCT00385671 (48) [back to overview]Number of Participants With Treatment-emergent Elevated Blood Pressure
NCT00385671 (48) [back to overview]Number of Participants With Treatment-Emergent Changes in Body Weight
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Total Bilirubin
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Sheehan Disability Scale (SDS) - Total Score and Scores for Items 1 to 3
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Sexual Functioning Questionnaire (CSFQ) Total Score and Subscale Scores
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Portland Neurotoxicity Scale - Total Score and Subscale Scores
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Leeds Sleep Evaluation Questionnaire (LSEQ) Subscales of Ease of Going to Sleep (GTS), Awakening (AFS), and Behavior Following Wakefulness (BFW), Quality of Sleep (QOS)
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Hepatic Enzyme Serum Levels
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Hemoglobin A1C
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Fasting Plasma Glucose
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Clinical Global Impression of Severity Scale (CGI Severity)
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Severity: Worst Pain
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Severity: Pain Right Now
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Severity: Least Pain
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Severity: 24-hour Average Pain
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Mean Interference Score
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference: With General Activity
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Walking Ability
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Sleep
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Relations With Other People
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Mood
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Enjoyment of Life
NCT00385671 (48) [back to overview]Mean Change From Baseline to 12 Weeks in Blood Pressure
NCT00385671 (48) [back to overview]Discontinuations for Abnormal Laboratory Analytes, Vital Signs, Overall and for Each Measure
NCT00385671 (48) [back to overview]Categorical Change From Baseline to 12 Weeks in Sexual Functioning Questionnaire (CSFQ) Total Score and Subscale Scores
NCT00385671 (48) [back to overview]Categorical Change From Baseline to 12 Weeks in Number of Patients Using Health Care as Measured by the Resource Utilization Scale
NCT00385671 (48) [back to overview]Categorial Change From Baseline to 12 Weeks in Portland Neurotoxicity Scale - Total Score and Subscale Scores
NCT00385671 (48) [back to overview]Weekly Mean Change From Baseline to 12 Weeks in 24 Hour Average Pain Severity - Only Participants Who Adhered to Key Protocol Requirements (Per-Protocol Population)
NCT00385671 (48) [back to overview]Time to First ≥ 2 Points Reduction in Weekly Mean 24 Hour Average Pain Score
NCT00385671 (48) [back to overview]Summary of Number of Participants Who Discontinued
NCT00385671 (48) [back to overview]Patient's Global Impression of Improvement Scale (PGI - Improvement) at 12 Weeks
NCT00385671 (48) [back to overview]Number of Patients With a Reduction of ≥ 50% in Weekly Mean of 24 Hour Average Pain Score
NCT00394901 (55) [back to overview]Endpoint Medical Outcomes Study Sleep Scale Scores:Awaken Short of Breath or With Headache
NCT00394901 (55) [back to overview]Endpoint Medical Outcomes Study Sleep Scale Scores:Overall Sleep Problem Index
NCT00394901 (55) [back to overview]Endpoint Medical Outcomes Study Sleep Scale Scores:Quantity of Sleep
NCT00394901 (55) [back to overview]Endpoint Medical Outcomes Study Sleep Scale Scores:Sleep Adequacy
NCT00394901 (55) [back to overview]Endpoint Medical Outcomes Study Sleep Scale Scores:Sleep Disturbance
NCT00394901 (55) [back to overview]Endpoint Medical Outcomes Study Sleep Scale Scores:Snoring
NCT00394901 (55) [back to overview]Endpoint Medical Outcomes Study Sleep Scale Scores:Somnolence
NCT00394901 (55) [back to overview]Endpoint Medical Outcomes Study Sleep Scale: Number of Participants With Optimal Sleep
NCT00394901 (55) [back to overview]Endpoint Patient Global Impression Change
NCT00394901 (55) [back to overview]Endpoint Present Pain Intensity Scores of the Short-Form McGill Pain Questionnaire
NCT00394901 (55) [back to overview]Endpoint Short-Form 36-Item Health Survey Scores: Bodily Pain
NCT00394901 (55) [back to overview]Endpoint Sensory Scores of the Short-Form McGill Pain Questionnaire
NCT00394901 (55) [back to overview]Number of Responders
NCT00394901 (55) [back to overview]Number of Patients Not Reporting Hyperalgesia
NCT00394901 (55) [back to overview]Number of Patients Not Reporting Allodynia
NCT00394901 (55) [back to overview]Endpoint Affective Scores of the Short-Form McGill Pain Questionnaire
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 9
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 10
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 11
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 8
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 7
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 6
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 5
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 4
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 10
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Endpoint
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 9
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 8
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 7
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 6
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 5
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 4
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 3
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 2
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 13
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 12
NCT00394901 (55) [back to overview]Endpoint Clinical Global Impression Change
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 3
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 2
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 13
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 12
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 11
NCT00394901 (55) [back to overview]Mean Pain Scores at Week 1
NCT00394901 (55) [back to overview]Mean Pain Scores at Endpoint
NCT00394901 (55) [back to overview]Mean Pain Score at Endpoint by Groups of Subjects With Expected Similar Plasma Concentrations
NCT00394901 (55) [back to overview]Mean Sleep Interference Scores at Week 1
NCT00394901 (55) [back to overview]Endpoint Visual Analogue Scale Scores of the Short-Form McGill Pain Questionnaire
NCT00394901 (55) [back to overview]Endpoint Total Scores of the Short-Form McGill Pain Questionnaire
NCT00394901 (55) [back to overview]Endpoint Short-Form 36-Item Health Survey Scores: Vitality
NCT00394901 (55) [back to overview]Endpoint Short-Form 36-Item Health Survey Scores: Social Functioning
NCT00394901 (55) [back to overview]Endpoint Short-Form 36-Item Health Survey Scores: Role Limitations-Physical
NCT00394901 (55) [back to overview]Endpoint Short-Form 36-Item Health Survey Scores: Role Limitations-Emotional
NCT00394901 (55) [back to overview]Endpoint Short-Form 36-Item Health Survey Scores: Physical Functioning
NCT00394901 (55) [back to overview]Endpoint Short-Form 36-Item Health Survey Scores: Mental Health
NCT00394901 (55) [back to overview]Endpoint Short-Form 36-Item Health Survey Scores: General Health Perception
NCT00407511 (11) [back to overview]Change From Baseline in Modified Brief Pain Inventory-Short Form (m-BPI-sf): Pain Interference Index Scores
NCT00407511 (11) [back to overview]Change From Baseline in Mean Pain Score on the Daily Pain Rating Scale (DPRS)
NCT00407511 (11) [back to overview]Change From Baseline in Mean Daily Sleep Interference Score (DSIS)
NCT00407511 (11) [back to overview]Change From Baseline in Global Anxiety Visual Analogue Scale (GA-VAS)
NCT00407511 (11) [back to overview]Change From Baseline (BL) in Modified Brief Pain Inventory-Short Form (m-BPI-sf): Pain Severity Index Scores
NCT00407511 (11) [back to overview]Change From Baseline to End of Treatment (EOT) in Weekly Mean Pain Score on the Daily Pain Rating Scale (DPRS)
NCT00407511 (11) [back to overview]Pain Treatment Satisfaction Scale (PTSS): Satisfaction With Current Pain Medication
NCT00407511 (11) [back to overview]Pain Treatment Satisfaction Scale (PTSS): Impact of Current Pain Medication
NCT00407511 (11) [back to overview]Clinical Global Impression of Change (CGIC)
NCT00407511 (11) [back to overview]Patient Global Impression of Change (PGIC)
NCT00407511 (11) [back to overview]Change From Baseline in Visual Analogue Scale for Pain (VAS-pain)
NCT00407745 (34) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - 12 Items Total Intensity Score
NCT00407745 (34) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Burning Spontaneous Pain
NCT00407745 (34) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Evoked Pain
NCT00407745 (34) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Individual Item (1, 2, 3, 5, 6, 8, 9, 10, 11, 12) Score
NCT00407745 (34) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Paresthesia/Dysesthesia
NCT00407745 (34) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Paroxysmal Pain
NCT00407745 (34) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Pressing Spontaneous Pain
NCT00407745 (34) [back to overview]Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP) - Dynamic Mechanical Allodynia
NCT00407745 (34) [back to overview]Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP) - Static Mechanical Allodynia
NCT00407745 (34) [back to overview]Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP)- Cold Allodynia
NCT00407745 (34) [back to overview]Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP)- Cold Hyperalgesia Subscales
NCT00407745 (34) [back to overview]Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP)- Punctata Hyperalgesia
NCT00407745 (34) [back to overview]Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP)- Temporal Summation to Tactile Stimuli
NCT00407745 (34) [back to overview]Change From Baseline in Weekly Mean Pain Score
NCT00407745 (34) [back to overview]Change From Baseline in Weekly Mean Pain Score by Week
NCT00407745 (34) [back to overview]Change From Baseline in Weekly Mean Sleep Interference Score
NCT00407745 (34) [back to overview]Change From Baseline in Weekly Mean Sleep Interference Score by Week
NCT00407745 (34) [back to overview]Number of Participants With Categorical Scores on the Patient Global Impression of Change (PGIC) (Full Scale)
NCT00407745 (34) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Disturbance
NCT00407745 (34) [back to overview]Duration Adjusted Average Change (DAAC) of Mean Pain Score
NCT00407745 (34) [back to overview]Number of Participants Having Optimal Sleep Based on Medical Outcomes Study Sleep Scale (MOS-SS)
NCT00407745 (34) [back to overview]Number of Participants With >=30% Reduction in Weekly Mean Pain Score From Baseline
NCT00407745 (34) [back to overview]Number of Participants With >=50% Reduction in Weekly Mean Pain Score From Baseline
NCT00407745 (34) [back to overview]Number of Participants With Improved Duration of Brief Pain Attacks Based on NPSI - Duration (Item 4)
NCT00407745 (34) [back to overview]Number of Participants With Improvement in the Number of Attacks Based on NPSI - Number of Attacks (Item 7)
NCT00407745 (34) [back to overview]Change From Baseline in Hospital and Anxiety Depression Scale (HADS) - Anxiety
NCT00407745 (34) [back to overview]Change From Baseline in Hospital and Anxiety Depression Scale (HADS) - Depression
NCT00407745 (34) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Awaken Short of Breath or With a Headache
NCT00407745 (34) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Adequacy
NCT00407745 (34) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Quantity
NCT00407745 (34) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Snoring
NCT00407745 (34) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Somnolence
NCT00407745 (34) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS)- 9-Item Overall Sleep Problems Index
NCT00407745 (34) [back to overview]Change From Baseline in Modified Brief Pain Inventory Interference Scale (10-Item) (mBPI-10) Total Score
NCT00407797 (12) [back to overview]Percent Change From Baseline in Seizure Frequency in Participants Who Had <=6 Seizures and >6 Seizures During the Baseline Period
NCT00407797 (12) [back to overview]Percent Change From Baseline in 28 Day Partial Seizure Rate During Treatment Observation Phase
NCT00407797 (12) [back to overview]Percent Change From Baseline in 28-Day Partial Seizure Frequency at Week 21
NCT00407797 (12) [back to overview]Percent of Participants With >=50% Reduction in Seizure Frequency (28-day Seizure Rate) Between Baseline and Final 4 Weeks of the Treatment Observation Period
NCT00407797 (12) [back to overview]Percent of Participants With >=75% Reduction in Seizure Frequency (28-day Seizure Rate) Between Baseline and Final 4 Weeks of the Treatment Observation Period
NCT00407797 (12) [back to overview]Percent of Seizure Free Participants During the Last 4 Weeks of the Treatment Observation Period
NCT00407797 (12) [back to overview]Percent of Seizure- Free Participants During the Treatment Observation Period
NCT00407797 (12) [back to overview]Response Ratio (RR)
NCT00407797 (12) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale (HADS)
NCT00407797 (12) [back to overview]Change From Baseline in Sleep Interference: Medical Outcome Sleep Scale (MOS)
NCT00407797 (12) [back to overview]Change From Baseline in Sleep Interference: Medical Outcome Sleep Scale (MOS): Optimal Sleep Subscale
NCT00407797 (12) [back to overview]Treatment Satisfaction: Patient General Impression to Change (PGIC)
NCT00413010 (8) [back to overview]Change in HAM-A Total Score at Weekly Visits
NCT00413010 (8) [back to overview]Change in Hamilton Depression Rating Scale (HAM-D) Total Score
NCT00413010 (8) [back to overview]Clinical Global Impression of Severity (CGI-S) Score
NCT00413010 (8) [back to overview]Number of Responders Using Hamilton Anxiety Rating Scale (HAM-A)
NCT00413010 (8) [back to overview]Number of Responders Using Clinical Global Impression of Improvement (CGI-I) Score
NCT00413010 (8) [back to overview]Subjects in Remission Using Hamilton Anxiety Rating Scale (HAM-A) Total Score
NCT00413010 (8) [back to overview]Change in Hamilton Anxiety Rating Scale (HAM-A) Total Scores
NCT00413010 (8) [back to overview]Time to Onset of Sustained Hamilton Anxiety Rating Scale (HAM-A) Improvement
NCT00424372 (6) [back to overview]Summary of Adverse Events
NCT00424372 (6) [back to overview]Short-Form McGill Pain Questionnaire the Efficacy of Change: Visual Analog Scale
NCT00424372 (6) [back to overview]Short-Form McGill Pain Questionnaire the Efficacy of Change: Total Score
NCT00424372 (6) [back to overview]Short-Form McGill Pain Questionnaire the Efficacy of Change: Sensory Score
NCT00424372 (6) [back to overview]Short-Form McGill Pain Questionnaire the Efficacy of Change: Present Pain Intensity
NCT00424372 (6) [back to overview]Short-Form McGill Pain Questionnaire the Efficacy of Change: Affective Score
NCT00437281 (15) [back to overview]Time to Reach Maximum Observed Plasma Concentration (Tmax): Single-Dose Analysis
NCT00437281 (15) [back to overview]Plasma Decay Half-Life (t1/2): Single-Dose Analysis
NCT00437281 (15) [back to overview]Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau): Multiple-Dose Analysis
NCT00437281 (15) [back to overview]Apparent Oral Clearance (CL/F): Multiple-Dose Analysis
NCT00437281 (15) [back to overview]Plasma Decay Half-Life (t1/2): Multiple-Dose Analysis
NCT00437281 (15) [back to overview]Number of Participants With Clinically Significant Change in Physical and Neurological Findings
NCT00437281 (15) [back to overview]Maximum Observed Plasma Concentration (Cmax): Single-Dose Analysis
NCT00437281 (15) [back to overview]Maximum Observed Plasma Concentration (Cmax): Multiple-Dose Analysis
NCT00437281 (15) [back to overview]Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - ∞)]: Single-Dose Analysis
NCT00437281 (15) [back to overview]Apparent Oral Clearance (CL/F): Single-Dose Analysis
NCT00437281 (15) [back to overview]Number of Treatment-Emergent Adverse Events (AEs) by Severity: Open-label Treatment
NCT00437281 (15) [back to overview]Number of Treatment-Emergent Adverse Events (AEs) by Severity: Double-blind Treatment
NCT00437281 (15) [back to overview]Time to Reach Maximum Observed Plasma Concentration (Tmax): Multiple-Dose Analysis
NCT00437281 (15) [back to overview]Renal Clearance (CLr): Single-Dose Analysis
NCT00437281 (15) [back to overview]Renal Clearance (CLr): Multiple-Dose Analysis
NCT00442546 (39) [back to overview]Change From Baseline in Visual Analogue Scale for Anxiety (VAS-Anxiety) Score Prior to Surgery
NCT00442546 (39) [back to overview]Cumulative Total Amount of Opioids Used During the Entire Hospital Stay
NCT00442546 (39) [back to overview]Current Pain During the Hospital Stay Assessed by the Pain NRS
NCT00442546 (39) [back to overview]Daily and Weekly Average Pain During the Hospital Stay and Post Discharge Assessed by the Pain NRS
NCT00442546 (39) [back to overview]Daily and Weekly Worst Pain During the Hospital Stay and Post Discharge Assessed by the Pain Numerical Rating Scale (NRS)
NCT00442546 (39) [back to overview]Neuropathic Pain Symptom Inventory (NPSI)
NCT00442546 (39) [back to overview]Number of Subjects With Global Evaluation of Study Medication Scores
NCT00442546 (39) [back to overview]Pain-Related Sleep Interference Post Surgery
NCT00442546 (39) [back to overview]Pain Interference With Sleep as Measured by the m-BPI-sf
NCT00442546 (39) [back to overview]Pain Interference With Relations With People as Measured by the m-BPI-sf
NCT00442546 (39) [back to overview]Time From End of Surgery to Meet Hospital Discharge Criteria
NCT00442546 (39) [back to overview]Analgesics Used Post Discharge (Acetylsalicylic Acid [Week 2] and Paracetamol [Weeks 2, 4, and 6]
NCT00442546 (39) [back to overview]Pain Interference With Normal Work as Measured by the m-BPI-sf
NCT00442546 (39) [back to overview]Pain Interference With Mood as Measured by the m-BPI-sf
NCT00442546 (39) [back to overview]The Effect of Pregabalin Compared to Placebo on the Occurrence of Opioid-Related Symptoms as Assessed Using the OR-SDS - Overall Composite Score
NCT00442546 (39) [back to overview]Time From End of Surgery to Actual Discharge
NCT00442546 (39) [back to overview]Pain Interference With General Activity as Measured by the m-BPI-sf
NCT00442546 (39) [back to overview]Total Clinically Meaningful Event (CME) Score
NCT00442546 (39) [back to overview]Timed Up-and-Go (TUG)
NCT00442546 (39) [back to overview]The Effect of Pregabalin Compared to Placebo on the Occurrence of Opioid-Related Symptoms as Assessed Using the OR-SDS - Severity Composite Score
NCT00442546 (39) [back to overview]Analgesics Used During the Hospital Stay (Acetylsalicylic Acid, Ketorolac, and Paracetamol)
NCT00442546 (39) [back to overview]The Effect of Pregabalin Compared to Placebo on the Occurrence of Opioid-Related Symptoms as Assessed Using the OR-SDS - Degree of Bother Composite Score
NCT00442546 (39) [back to overview]The Effect of Pregabalin Compared to Placebo on the Occurrence of Opioid-Related Symptoms as Assessed Using the Opioid-Related Symptom Distress Scale (OR-SDS) - Frequency Composite Score
NCT00442546 (39) [back to overview]Satisfaction With Medication Efficacy Measured by the PTSS
NCT00442546 (39) [back to overview]Satisfaction With Medication Characteristics Measured by the PTSS
NCT00442546 (39) [back to overview]Satisfaction With Current Pain Medication Measured by the Pain Treatment Satisfaction Scale (PTSS)
NCT00442546 (39) [back to overview]ROM Assessment of the Passive Flexion of the Surgical Knee
NCT00442546 (39) [back to overview]Range of Motion (ROM) Assessment of the Active Flexion of the Surgical Knee
NCT00442546 (39) [back to overview]Pain Interference With Walking Ability as Measured by the m-BPI-sf
NCT00442546 (39) [back to overview]Pain Interference With Enjoyment of Life as Measured by the m-BPI-sf
NCT00442546 (39) [back to overview]Pain Interference Index Score as Measured by the m-BPI-sf
NCT00442546 (39) [back to overview]Overall Satisfaction Measured by the PTSS
NCT00442546 (39) [back to overview]Overall Pain Relief Measured by the PTSS
NCT00442546 (39) [back to overview]Opioids Used Post Discharge
NCT00442546 (39) [back to overview]Number of Subjects With Persistent Pain Based on 11-Point Verbal Rating Scale (VRS)
NCT00442546 (39) [back to overview]Analgesics Used Post Discharge (Acetylsalicylic Acid) for the Pregabalin 150 mg and Placebo Treatment Groups at Week 4
NCT00442546 (39) [back to overview]Analgesics Used Post Discharge (Acetylsalicylic Acid) for the Pregabalin 150 mg and Placebo Treatment Groups at Week 6/ET
NCT00442546 (39) [back to overview]Analgesics Used Post Discharge (Ibuprofen) for the Pregabalin 150 mg and Placebo Treatment Groups
NCT00442546 (39) [back to overview]Subject Reported Worst Pain Score in Daily Diaries Using the Worst Pain Item of the Modified Brief Pain Inventory - Short Form (m-BPI-sf)
NCT00448916 (16) [back to overview]Number of Participants With Significant Change in Supine Heart Rate (HR) at Post Baseline Visits (Visit 1 to 12 Months).
NCT00448916 (16) [back to overview]Number of Participants With Hematotolgical Abnormalities.
NCT00448916 (16) [back to overview]Number of Participants With Changes in Electrocardiogram (ECG) Data Post-Baseline Visits (Week 1 to 12 Months).
NCT00448916 (16) [back to overview]Number of Participants With Change From Previous Physical Examination Results at Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.
NCT00448916 (16) [back to overview]Seizure Frequency.
NCT00448916 (16) [back to overview]Change From Baseline in Body Weight at Day 9, Week 1, Month 1, Month 2, Month 4, Month 6, Month 9, Month 12/Early Termination and Follow-up.
NCT00448916 (16) [back to overview]Number of Participants With Abnormalities in Creatine Kinase.
NCT00448916 (16) [back to overview]Number of Participants With Significant Change in Supine Diastolic Blood Pressure (BP) at Post-Baseline Visits (Visit 1 to 12 Months).
NCT00448916 (16) [back to overview]Number of Participants With Abnormalities in Chemistry (Including Liver Function, Renal Function, Lipids, Electrolytes, Glucose, Insulin Like Growth Factor (IGF) and IGF Binding Protein).
NCT00448916 (16) [back to overview]Number of Participants With Abnormalities in Endocrine Panel (Hormones).
NCT00448916 (16) [back to overview]Number of Participants With Adverse Events (AE).
NCT00448916 (16) [back to overview]Number of Participants With Change From Previous Neurological Examination Results at Visit 1, Week 1, Month 1, Month 6, Month 12/Early Termination and Follow-up.
NCT00448916 (16) [back to overview]Height at Month 12/Early Termination.
NCT00448916 (16) [back to overview]Number of Participants With Abnormalities in Urinalysis (Dipstick/Microscopy).
NCT00448916 (16) [back to overview]Derived Body Mass Index Data (BMI) at Month 12/Early Termination.
NCT00448916 (16) [back to overview]Number of Participants With Significant Change in Supine Systolic BP at Post Baseline Visits (Visit 1 to 12 Months).
NCT00468845 (43) [back to overview]Brief Pain Inventory-Short Form (m-BPI-sf): Pain Severity Index Scores
NCT00468845 (43) [back to overview]Worst Daily Pain
NCT00468845 (43) [back to overview]Current Pain - Pain With Movement Caused by Sitting
NCT00468845 (43) [back to overview]Current Pain at Rest
NCT00468845 (43) [back to overview]Incidence of Chronic Post-operative Pain
NCT00468845 (43) [back to overview]Integrated Analgesic Score
NCT00468845 (43) [back to overview]Neuropathic Pain Symptom Inventory (NPSI)
NCT00468845 (43) [back to overview]Non-opioid Rescue Medication - Ibuprofen
NCT00468845 (43) [back to overview]Non-opioid Rescue Medication - Paracetamol
NCT00468845 (43) [back to overview]Pain Treatment Satisfaction Scale (PTSS): Impact of Current Pain Medication
NCT00468845 (43) [back to overview]Pain Treatment Satisfaction Scale (PTSS): Satisfaction With Current Pain Medication
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Day 1 PS
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Day 14 PS
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Day 2 PS
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Day 28 PS
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Day 3 PS
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Day 4 PS
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Day 5 PS
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Day 7 PS
NCT00468845 (43) [back to overview]Percentage of Participants With Wound Healing Complications - Day 28 PS
NCT00468845 (43) [back to overview]Percentage of Participants With Wound Healing Complications - Day 14 PS
NCT00468845 (43) [back to overview]Area Under the Curve (AUC) Pain - Pain With Movement Caused by Peak Expiratory Flow (PEF) Test
NCT00468845 (43) [back to overview]Area Under the Curve (AUC) Pain - Pain With Movement Caused by Sitting
NCT00468845 (43) [back to overview]Incision Length Correlated With Worst Pain
NCT00468845 (43) [back to overview]Time to Actual Discharge
NCT00468845 (43) [back to overview]Time to Meet Hospital Discharge Criteria
NCT00468845 (43) [back to overview]Worst Pain Using the Modified Brief Pain Inventory - Short Form (m-BPI-sf)
NCT00468845 (43) [back to overview]Anxiety Before and After Surgery
NCT00468845 (43) [back to overview]Average Daily Pain
NCT00468845 (43) [back to overview]Brief Pain Inventory-Short Form (m-BPI-sf): Pain Interference Index Scores
NCT00468845 (43) [back to overview]Percent Change From Baseline in Peak Expiratory Flow
NCT00468845 (43) [back to overview]Current Pain - Pain With Movement Caused by Peak Expiratory (PEF) Test
NCT00468845 (43) [back to overview]Area Under the Curve (AUC) of Pain at Rest During the First Two Days of Hospital Stay
NCT00468845 (43) [back to overview]Percentage of Participants With Wound Healing Complications - Day 7 PS
NCT00468845 (43) [back to overview]Percentage of Participants With Wound Healing Complications - Discharge
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Surgery Day
NCT00468845 (43) [back to overview]Participant Satisfaction With Study Medication - Discharge
NCT00468845 (43) [back to overview]Percentage of Participants With Wound Healing Complications - End of Treatment
NCT00468845 (43) [back to overview]Quality of Life Using EuroQol (EQ-5D) Health State Profile
NCT00468845 (43) [back to overview]Sleep Interference
NCT00468845 (43) [back to overview]Timed Up-and-Go (TUG)
NCT00468845 (43) [back to overview]Total Clinically Meaningful Event (CME) Score
NCT00468845 (43) [back to overview]Total Cumulative Dose of Opioids Following Surgery
NCT00524030 (7) [back to overview]Percentage of Participants Who Met Protocol-Specified Exit Events
NCT00524030 (7) [back to overview]Mean Time on Pregabalin Monotherapy
NCT00524030 (7) [back to overview]Percentage of Participants Completing 20 Weeks of Double-Blind Treatment
NCT00524030 (7) [back to overview]Percentage of Participants in the Pregabalin 150 mg/Day Treatment Group Discontinuing the Study Due to at Least 1 Pre-Defined Seizure Exit Criteria
NCT00524030 (7) [back to overview]Percentage of Participants in the Pregabalin 600 mg/Day Treatment Group Discontinuing the Study Due to at Least 1 Pre-Defined Seizure Exit Criteria
NCT00524030 (7) [back to overview]Pregabalin Exposure-Response Analysis
NCT00524030 (7) [back to overview]Percentage of Seizure-Free Participants by Study Phase
NCT00537238 (8) [back to overview]Percent Change From Baseline in 28 Day Seizure Frequency at Week 16
NCT00537238 (8) [back to overview]Proportion of Participants With Response to Treatment
NCT00537238 (8) [back to overview]Medical Outcomes Study Sleep Scale (MOS-SS) Score
NCT00537238 (8) [back to overview]Change From Baseline in Brief Psychiatric Rating Scale - Anchored (BPRS-A) Total and Core Score at Week 7, 10, 13, 16 and Follow-up
NCT00537238 (8) [back to overview]Change From Baseline in the Proportion of 28-day Secondarily Generalized Tonic-clonic (SGTC) Seizure Rate to 28-day All Partial Seizure Rate at Week 16
NCT00537238 (8) [back to overview]Hospital Anxiety and Depression Scale (HADS) Score
NCT00537238 (8) [back to overview]Percentage of Participants Without Seizures
NCT00537238 (8) [back to overview]Percentage of Participants With Optimal Sleep Assessed Using Medical Outcomes Study-Sleep Scale (MOS-SS) Score
NCT00537940 (9) [back to overview]Percentage of Participants Without Seizures.
NCT00537940 (9) [back to overview]Percentage of Participants With 75% Reduction From Baseline in 28-day Seizure Rate at Week 21.
NCT00537940 (9) [back to overview]Medical Outcomes Study Sleep Scale (MOS-SS) Score.
NCT00537940 (9) [back to overview]Percentage of Participants With 50% Reduction From Baseline in 28-day Seizure Rate at Week 21.
NCT00537940 (9) [back to overview]Percentage of Participants With Optimal Sleep Assessed Using Medical Outcomes Study-Sleep Scale (MOS-SS) Score.
NCT00537940 (9) [back to overview]Percent Change From Baseline in 28-day Seizure Frequency at Week 21.
NCT00537940 (9) [back to overview]Hospital Anxiety and Depression Scale (HADS) Score.
NCT00537940 (9) [back to overview]Change From Baseline in the 28-day Secondarily Generalized Tonic-clonic (SGTC) Seizure Frequency at Week 21.
NCT00537940 (9) [back to overview]Reduction in Proportion of the 28-day SGTC Seizure Rate Over the Total Partial Seizure Rate at Week 21.
NCT00551135 (23) [back to overview]Subject Global Evaluation of Study Medication (GESM)
NCT00551135 (23) [back to overview]Participants With Physician Contacts Post-discharge
NCT00551135 (23) [back to overview]Chronic Postoperative Pain: Total Score and Subscale Scores Using the Neuropathic Pain Symptom Inventory (NPSI)
NCT00551135 (23) [back to overview]Participants With Wound Healing Complications
NCT00551135 (23) [back to overview]Numeric Rating Scale (NRS): Current Pain With Movement - Coughing
NCT00551135 (23) [back to overview]Numeric Rating Scale (NRS): Current Pain With Movement - Sitting
NCT00551135 (23) [back to overview]Numeric Rating Scale (NRS): Current Pain With Movement - Walking
NCT00551135 (23) [back to overview]Amount of Non-opioid Rescue Medication (Naproxen and Antiemetic Medications) Used During the Study
NCT00551135 (23) [back to overview]Numerical Rating Scale (NRS): Current Pain at Rest
NCT00551135 (23) [back to overview]Modified Brief Pain Inventory-Short Form (mBPI-sf): Worst Pain 24 Hours Post Surgery
NCT00551135 (23) [back to overview]Total Cumulative Dose of Opioids and Tramadol Used During and After Surgery
NCT00551135 (23) [back to overview]Total Clinically Meaningful Event (CME) Score and Cumulative Total Distinct CME Score Using the Opioid-Related Symptom Distress Scale (OR-SDS)
NCT00551135 (23) [back to overview]Participants With Clinically Meaningful Events (CMEs) for Individual Symptoms Using the Opioid-Related Symptom Distress Scale (OR-SDS)
NCT00551135 (23) [back to overview]Participants With Chronic Postoperative Pain
NCT00551135 (23) [back to overview]Numeric Rating Scale (NRS): Current Pain With Movement - Area Under the Curve (AUC) for Sitting, Walking, and Coughing
NCT00551135 (23) [back to overview]Numeric Rating Scale (NRS): Average Pain
NCT00551135 (23) [back to overview]Daily Sleep Interference Rating Scale (DSIRS) Score
NCT00551135 (23) [back to overview]Chronic Postoperative Pain: Pain Severity Index Score and Pain Interference Index Score on the Modified Brief Pain Inventory-Short Form (mBPI-sf)
NCT00551135 (23) [back to overview]Change From Baseline in Pain Catastrophizing Scale (PCS) Total Score and Subscales
NCT00551135 (23) [back to overview]Baseline and Change From Baseline in Short Form Acute Health Survey 12-Item Version (SF-12v2) Physical Component Summary Score (PCSS) and Mental Component Summary Score (MCSS)
NCT00551135 (23) [back to overview]Baseline and Change From Baseline in EuroQol (EQ-5D) Health State Profile Score
NCT00551135 (23) [back to overview]Baseline and Change From Baseline in Anxiety Visual Analog Scale (VAS) Score
NCT00551135 (23) [back to overview]Numeric Rating Scale (NRS): Current Pain at Rest - Area Under the Curve (AUC)
NCT00553280 (6) [back to overview]Summary of Adverse Events
NCT00553280 (6) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Affective Scores
NCT00553280 (6) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Present Pain Intensity Scores
NCT00553280 (6) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Sensory Scores
NCT00553280 (6) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Visual Analogue Scale Scores
NCT00553280 (6) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Total Scores
NCT00553475 (39) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Sleep Disturbance
NCT00553475 (39) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Sleep Shortness of Breath or Headache
NCT00553475 (39) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Sleep Adequacy
NCT00553475 (39) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Somnolence
NCT00553475 (39) [back to overview]Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Bodily Pain
NCT00553475 (39) [back to overview]Change From Baseline in Short Form 36-Item (SF-36) Health Survey: General Health Perception
NCT00553475 (39) [back to overview]Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Mental Health
NCT00553475 (39) [back to overview]Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Physical Functioning
NCT00553475 (39) [back to overview]Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Role Limitations-Emotional
NCT00553475 (39) [back to overview]Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Role Limitations-Physical
NCT00553475 (39) [back to overview]Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Social Functioning
NCT00553475 (39) [back to overview]Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Vitality
NCT00553475 (39) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Affective Scores
NCT00553475 (39) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Present Pain Intensity Scores
NCT00553475 (39) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Sensory Scores
NCT00553475 (39) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Snoring
NCT00553475 (39) [back to overview]Change From Baseline at Week 1 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 11 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 12 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 13 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 10 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 2 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 3 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 4 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 5 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 6 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline to Study Endpoint in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 8 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline at Week 7 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Total Scores
NCT00553475 (39) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire: Visual Analogue Scale Scores
NCT00553475 (39) [back to overview]Change From Baseline to Study Endpoint in Mean Weekly Pain Scores by Groups of Subjects With Expected Similar Plasma Concentrations
NCT00553475 (39) [back to overview]Clinical Global Impression of Change
NCT00553475 (39) [back to overview]Number of Responders
NCT00553475 (39) [back to overview]Patient Global Impression of Change
NCT00553475 (39) [back to overview]Change From Baseline at Week 9 in Mean Weekly Pain Scores
NCT00553475 (39) [back to overview]Change From Baseline in Mean Sleep Interference Scores
NCT00553475 (39) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Overall Sleep Problems Index
NCT00553475 (39) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Quantity of Sleep
NCT00558753 (3) [back to overview]Epidural Medication Consumption Rate
NCT00558753 (3) [back to overview]Knee Range of Motion (Active Flexion)
NCT00558753 (3) [back to overview]Neuropathic Pain (S-LANSS > 12)
NCT00570310 (2) [back to overview]Daily Evening Patient Reported Pain Intensity Scores
NCT00570310 (2) [back to overview]'Time to Efficacy Failure' During the Randomized Withdrawal Portion of the Study
NCT00573261 (11) [back to overview]Assessing the Change in Heart Rate by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.
NCT00573261 (11) [back to overview]Assessing the Change of Parameters of Autonomic Nerve Function Such as Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.
NCT00573261 (11) [back to overview]To Assess the Change of Depressive Symptoms Upon Treatment of Pregabalin in Comparison to Placebo.
NCT00573261 (11) [back to overview]Assessing the Change in Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.
NCT00573261 (11) [back to overview]Assessing the Change in Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.
NCT00573261 (11) [back to overview]Assessing the Change in Resting Blood Pressure Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.
NCT00573261 (11) [back to overview]Assessing the Change of Parameters of Autonomic Nerve Function Such as Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.
NCT00573261 (11) [back to overview]To Assess the Change in Disability Scale Upon Treatment of Pregabalin in Comparison to Placebo.
NCT00573261 (11) [back to overview]To Assess the Change of Anxiety Symptoms Upon Treatment of Pregabalin in Comparison to Placebo.
NCT00573261 (11) [back to overview]To Assess the Change of Pain Symptoms Upon Treatment of Pregabalin in Comparison to Placebo.
NCT00573261 (11) [back to overview]Assessing the Change of Parameters of Autonomic Nerve Function Such as Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.
NCT00596466 (2) [back to overview]Number of Participants With (All Causality) Adverse Events (AEs) and Serious Adverse Events (SAEs)
NCT00596466 (2) [back to overview]Number of Participants With Laboratory Test Values of Potential Clinical Importance
NCT00599638 (9) [back to overview]Number of Participants With Clinically Significant Laboratory Abnormalities: Clinical Chemistry
NCT00599638 (9) [back to overview]Number of Participants With Clinically Significant Laboratory Abnormalities: Hematology
NCT00599638 (9) [back to overview]Number of Participants With Clinically Significant Laboratory Abnormalities: Urinalysis
NCT00599638 (9) [back to overview]Number of Participants With Clinically Significant Vital Signs Abnormalities
NCT00599638 (9) [back to overview]Pain Visual Analogue Scale (VAS) at Baseline and Week 4
NCT00599638 (9) [back to overview]Percentage of Participants With Patient Global Impression of Change (PGIC) Score
NCT00599638 (9) [back to overview]Mean Pain Score on Daily Pain Rating Scale (DPRS)
NCT00599638 (9) [back to overview]Neuropathic Pain Symptom Inventory (NPSI)
NCT00599638 (9) [back to overview]Number of Participants With Clinically Significant Electrocardiogram (ECG) Abnormalities
NCT00601458 (2) [back to overview]Time to First Request of PCA Hydromorphone
NCT00601458 (2) [back to overview]Total Patient Controlled Analgesic (PCA) Hydromorphone Consumption Over the 24 Hours Post-surgery
NCT00610155 (5) [back to overview]Voxel-wise Blood Oxygen Level Dependent (BOLD) Using fMRI of Brain Activation Signals in Defined Brain Regions in Response to Dynamic Mechanical Allodynia of the Control Side (DMAc)
NCT00610155 (5) [back to overview]Voxel-wise Blood Oxygen Level Dependent (BOLD) Using fMRI of Brain Activation Signals in Defined Brain Regions in Response to Thermal Stimulation (TH)
NCT00610155 (5) [back to overview]Present Pain Intensity Score (PPIS)
NCT00610155 (5) [back to overview]Daily Pain Score
NCT00610155 (5) [back to overview]Voxel-wise Blood Oxygen Level Dependent (BOLD) Using fMRI of Brain Activation Signals in Defined Brain Regions in Response to Dynamic Mechanical Allodynia of the Affected Side (DMAa)
NCT00624780 (41) [back to overview]Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 2
NCT00624780 (41) [back to overview]Physician's Withdrawal Checklist (PWC) Score for Cohort 3 (6-Month Last Visit)
NCT00624780 (41) [back to overview]Hamilton Anxiety Scale (HAM-A) for Cohort 2 (3-Month Last Visit)
NCT00624780 (41) [back to overview]Change From Baseline in Clinical Global Impression - Severity (CGI-S) Score at Week 12
NCT00624780 (41) [back to overview]Change From Baseline in Clinical Global Impression - Severity (CGI-S) Score at Week 24
NCT00624780 (41) [back to overview]Number of Participants With Rebound Anxiety for Cohort 2 (3-Month Last Visit)
NCT00624780 (41) [back to overview]Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 2 (3-Month Last Visit) at Discontinuation Week 2
NCT00624780 (41) [back to overview]Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 3 (6-Month Last Visit) at Discontinuation Week 2
NCT00624780 (41) [back to overview]Change From Baseline in Hamilton Anxiety Scale (HAM-A) Score at Week 12
NCT00624780 (41) [back to overview]Change From Baseline in Hamilton Anxiety Scale (HAM-A) Score at Week 24
NCT00624780 (41) [back to overview]Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 2
NCT00624780 (41) [back to overview]Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 2 (3-Month Last Visit) at Discontinuation Week 2
NCT00624780 (41) [back to overview]Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 3 (6-Month Last Visit) at Discontinuation Week 2
NCT00624780 (41) [back to overview]Clinical Global Impression - Improvement (CGI-I) Score at the End of Period 1
NCT00624780 (41) [back to overview]Clinical Global Impression - Improvement (CGI-I) Score at the End of Period 2
NCT00624780 (41) [back to overview]Number of Participants With Rebound Anxiety for Cohort 1 (Less Than 3-Month Last Visit)
NCT00624780 (41) [back to overview]Number of Participants With Rebound Anxiety for Cohort 3 (6-Month Last Visit)
NCT00624780 (41) [back to overview]Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 1
NCT00624780 (41) [back to overview]Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 2 (3-Month Last Visit) at Discontinuation Week 1
NCT00624780 (41) [back to overview]Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 3 (6-Month Last Visit) at Discontinuation Week 1
NCT00624780 (41) [back to overview]Change From Baseline in Physician's Withdrawal Checklist (PWC) Score for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 1 and 2
NCT00624780 (41) [back to overview]Change From Baseline in Physician's Withdrawal Checklist (PWC) Score for Cohort 2 (3-Month Last Visit) at Discontinuation Week 1 and 2
NCT00624780 (41) [back to overview]Change From Baseline in Physician's Withdrawal Checklist (PWC) Score for Cohort 3 (6-Month Last Visit) at Discontinuation Week 1 and 2
NCT00624780 (41) [back to overview]Change From Last Visit of Treatment in Hamilton Anxiety Scale (HAM-A) for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 1 and 2
NCT00624780 (41) [back to overview]Change From Last Visit of Treatment in Hamilton Anxiety Scale (HAM-A) for Cohort 2 (3-Month Last Visit) at Discontinuation Week 1 and 2
NCT00624780 (41) [back to overview]Change From Last Visit of Treatment in Hamilton Anxiety Scale (HAM-A) for Cohort 3 (6-Month Last Visit) at Discontinuation Week 1 and 2
NCT00624780 (41) [back to overview]Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 1
NCT00624780 (41) [back to overview]Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 2 (3-Month Last Visit) at Discontinuation Week 1
NCT00624780 (41) [back to overview]Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 3 (6-Month Last Visit) at Discontinuation Week 1
NCT00624780 (41) [back to overview]Clinical Global Impression - Severity (CGI-S) Score for Period 1
NCT00624780 (41) [back to overview]Clinical Global Impression - Severity (CGI-S) Score for Period 2
NCT00624780 (41) [back to overview]Hamilton Anxiety Scale (HAM-A) for Cohort 1 (Less Than 3-Month Last Visit)
NCT00624780 (41) [back to overview]Hamilton Anxiety Scale (HAM-A) Score for Cohort 3 (6-Month Last Visit)
NCT00624780 (41) [back to overview]Hamilton Anxiety Scale (HAM-A) Score for Period 1
NCT00624780 (41) [back to overview]Hamilton Anxiety Scale (HAM-A) Score for Period 2
NCT00624780 (41) [back to overview]Number of Participants With Discontinuation-Emergent Signs and Symptoms (DESS) for Cohort 1 (Less Than 3-Month Last Visit)
NCT00624780 (41) [back to overview]Number of Participants With Discontinuation-Emergent Signs and Symptoms (DESS) for Cohort 2 (3-Month Last Visit)
NCT00624780 (41) [back to overview]Number of Participants With Discontinuation-Emergent Signs and Symptoms (DESS) for Cohort 3 (6-Month Last Visit)
NCT00624780 (41) [back to overview]Number of Participants With Treatment-Emergent Adverse Events (AEs)
NCT00624780 (41) [back to overview]Physician's Withdrawal Checklist (PWC) Score for Cohort 1 (Less Than 3-Month Last Visit)
NCT00624780 (41) [back to overview]Physician's Withdrawal Checklist (PWC) Score for Cohort 2 (3-Month Last Visit)
NCT00631696 (10) [back to overview]Change From Baseline in Sperm Motility to Week 12
NCT00631696 (10) [back to overview]Change From Baseline in Follicle Stimulating Hormone (FSH) to Week 12
NCT00631696 (10) [back to overview]Percentage of Participants With a 50 Percent (%) or More Reduction in Sperm Concentration From Baseline (Bsl) to End of Study (EOS)
NCT00631696 (10) [back to overview]Change From Baseline in Follicle Stimulating Hormone (FSH) to End of Study (EOS)
NCT00631696 (10) [back to overview]Change From Baseline in Follicle Stimulating Hormone (FSH) to Week 26
NCT00631696 (10) [back to overview]Change From Baseline in Sperm Motility to End of Study (EOS)
NCT00631696 (10) [back to overview]Change From Baseline in Sperm Motility to Week 26
NCT00631696 (10) [back to overview]Change From Baseline in Testosterone to End of Study (EOS)
NCT00631696 (10) [back to overview]Change From Baseline in Testosterone to Week 12
NCT00631696 (10) [back to overview]Change From Baseline in Testosterone to Week 26
NCT00638443 (12) [back to overview]Total Distance
NCT00638443 (12) [back to overview]Time to First Symptoms of Moderate Pain
NCT00638443 (12) [back to overview]Area Under the Curve
NCT00638443 (12) [back to overview]Visual Analog Scale (VAS)
NCT00638443 (12) [back to overview]Swiss Spinal Stenosis- Physical Function
NCT00638443 (12) [back to overview]Final Pain as Measured by NRS
NCT00638443 (12) [back to overview]Modified Brief Pain Inventory (mBPI)- Interference Score
NCT00638443 (12) [back to overview]Oswestry Disability Index (ODI) Score
NCT00638443 (12) [back to overview]Patient Global Assessment (PGA)
NCT00638443 (12) [back to overview]Roland Morris Disability Questionnaire
NCT00638443 (12) [back to overview]Swiss Spinal Stenosis (SSS) Score- Symptom Severity
NCT00638443 (12) [back to overview]Recovery Time
NCT00643760 (19) [back to overview]Number of Participants Achieving Various Levels of Percent Reduction From Baseline in the Mean 24-hour Average Pain Intensity Score at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in the Mean 24-hour Average Pain Intensity (API) Score at End of Maintenance Treatment (EOMT) Using Last Observation Carried Forward (LOCF) Data
NCT00643760 (19) [back to overview]Change From Baseline in Pain Score After Taking a 50-foot Walk at EOMT
NCT00643760 (19) [back to overview]Change From Baseline in the Mean Current (Evening) Pain Intensity Score at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in the Mean Current (Morning) Pain Intensity Score at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in the Mean Daily Dose of Rescue Medication at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in the Mean Day-time Average Pain Intensity (API) Score at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in the Mean Day-time Worst Pain Intensity Score at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in the Mean Night-time Average Pain Intensity (API) Score at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in the Mean Night-time Worst Pain Intensity Score at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in the Mean Sleep Interference Score at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in Quality of Life as Assessed by the 36-Item Short Form Health Survey (SF-36) at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Number of Participants Who Are Responders on the Clinician Global Impression of Change (CGIC) Questionnaire at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Number of Participants Who Are Responders on the Patient Global Impression of Change (PGIC) Questionnaire at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Time to Onset of Sustained Improvement in the 24-hour Average Pain Intensity Score
NCT00643760 (19) [back to overview]Change From Baseline in Emotional Functioning as Assessed by the Profile of Mood States-Brief Form (POMS-B) at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in Pain Quality as Assessed by the Neuropathic Pain Scale (NPS) Summary Scores at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in Pain Characteristics and Intensity as Assessed by the Short Form-McGill Pain Questionnaire (SF-MPQ) at EOMT Using LOCF Data
NCT00643760 (19) [back to overview]Change From Baseline in Severity of Pain and the Impact of Pain as Assessed by the Brief Pain Inventory (BPI) at EOMT Using LOCF Data
NCT00646451 (2) [back to overview]Secondary Outcome Measures Quality of Life in Essential Tremor (QUEST), Hamilton Anxiety Scale (HAM-A), Hotel Dieu-16 a Sleep Hygiene Questionnaire(HD-16), and Clinical Clobal Impression-Change Scale (CGI-C)
NCT00646451 (2) [back to overview]Change in Tremor Rating Scale (TRS) Compared With Baseline.
NCT00654940 (3) [back to overview]Subject Activity as Captured by the Actiwatch Score Device: Total Activity Score at End of Treatment
NCT00654940 (3) [back to overview]Change From Baseline to Treatment Week 2 in Daily Pain Rating Scale
NCT00654940 (3) [back to overview]Neuropathic Pain Symptom Inventory (NPSI)
NCT00663962 (1) [back to overview]Incidence of Chronic Post-thoracotomy Pain at 2 Months Postoperatively
NCT00676403 (20) [back to overview]Number of Subjects Responding to Treatment as Assessed by the Clinical Global Impression - Improvement Scale (CGI-I)
NCT00676403 (20) [back to overview]Medical Outcomes Study Short Form 36 (SF-36): Change From Baseline to Week 6
NCT00676403 (20) [back to overview]Medical Outcomes Study Short Form 36 (SF-36); Number of Subjects With Self-Evaluated Change in Health Status Scores
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): Somnolence Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): Snoring Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): Sleep Quantity Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): Sleep Disturbance Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): Sleep Adequacy Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): Optimal Sleep; Observed Cases Summarized by Week
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): Awaken Short of Breath or With Headache Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): 9-Item Sleep Problems Index; Observed Change From Baseline
NCT00676403 (20) [back to overview]Restless Leg Syndrome - Quality of Life Scale (RLS-QoL): Change From Baseline to Week 6
NCT00676403 (20) [back to overview]Change From Baseline in Restless Leg Syndrome (RLS) International Restless Leg Group Symptom Severity Rating Scale (IRLS) Total Score at Week 6
NCT00676403 (20) [back to overview]Medical Outcomes Study - Sleep Scale (MOSS-SS): 6-Item Sleep Problems Index; Observed Change From Baseline
NCT00676403 (20) [back to overview]Subjective Sleep Questionnaire: Total Wake Time After Sleep Onset Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Subjective Sleep Questionnaire: Quality of Sleep Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Subjective Sleep Questionnaire: Number of Awakenings Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Subjective Sleep Questionnaire: Hours of Sleep Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Subjective Sleep Questionnaire (SSQ): Latency Subscale; Observed Change From Baseline
NCT00676403 (20) [back to overview]Number of Subjects With Categorical Scores on the Clinical Global Impression - Severity Scale (CGI-S)
NCT00696787 (2) [back to overview]Change From Baseline on the Numeric Rating Scale (NRS)
NCT00696787 (2) [back to overview]Change From Baseline on the Numeric Rating Scale (NRS) in the Treatment of Pain Associated With Fibromyalgia in Adult Female Outpatients
NCT00702949 (8) [back to overview]Mood and Hot Flash-related Daily Interference on Activities After 6 Weeks of Treatment
NCT00702949 (8) [back to overview]Comparison of 75 mg of Pregabalin vs Placebo, Numerical Change From Baseline in Hot Flash Score at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).
NCT00702949 (8) [back to overview]Comparison of 75 mg of Pregabalin vs Placebo. Percent Change From Baseline in Hot Flash Score at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).
NCT00702949 (8) [back to overview]Numerical Change From Baseline in Hot Flash Frequency at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).
NCT00702949 (8) [back to overview]Numerical Change From Baseline in Hot Flash Score at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).
NCT00702949 (8) [back to overview]Percent Change From Baseline in Hot Flash Frequency at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).
NCT00702949 (8) [back to overview]Percent Change From Baseline in Hot Flash Score at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).
NCT00702949 (8) [back to overview]Toxicity Data for the Individual Study Arms From the Symptom Experience Diary .
NCT00706836 (1) [back to overview]Effect of Pregabalin (Two Doses) Versus Placebo
NCT00729690 (4) [back to overview]NRS Pain Score AUC (NRS*hr) - 1st 24 Hours
NCT00729690 (4) [back to overview]NRS Pain Score AUC (NRS*hr) - 1st 12 Hours
NCT00729690 (4) [back to overview]Active Knee Flexion
NCT00729690 (4) [back to overview]Passive Knee Flexion
NCT00760474 (17) [back to overview]Glutamine/Creatine (Gln/Cr) and Glutamate/Creatine (Glu/Cr) Ratios Measured by Proton Magnetic Resonance Spectroscopy (1H-MRS)
NCT00760474 (17) [back to overview]Short-Form McGill Pain Questionnaire (SF-MPQ): Sensory Total Score Including Outliers
NCT00760474 (17) [back to overview]Short-Form McGill Pain Questionnaire (SF-MPQ): Overall Score Including Outliers
NCT00760474 (17) [back to overview]Short-Form McGill Pain Questionnaire (SF-MPQ): Affective Total Score Including Outliers
NCT00760474 (17) [back to overview]Pain Catastrophizing Scale (PCS) Including Outliers
NCT00760474 (17) [back to overview]Hospital Anxiety and Depression Scale (HADS): Depression Total Score Including Outliers
NCT00760474 (17) [back to overview]Hospital Anxiety and Depression Scale (HADS): Anxiety Total Score Including Outliers
NCT00760474 (17) [back to overview]Daily Pain Diary Numeric Rating Scale (NRS) Item From the Modified Brief Pain Inventory (mBPI) for Assessment of Clinical Pain: Individual Daily Pain Score Including Outliers
NCT00760474 (17) [back to overview]Daily Pain Diary Numeric Rating Scale (NRS) Item From the Modified Brief Pain Inventory (mBPI) for Assessment of Clinical Pain: 7 Day Average Pain Score Including Outliers
NCT00760474 (17) [back to overview]Daily Pain Diary Numeric Rating Scale (NRS) Item From the Modified Brief Pain Inventory (mBPI) for Assessment of Clinical Pain: 3 Day Average Pain Score Including Outliers
NCT00760474 (17) [back to overview]Voxel-wise Blood Oxygen Level Dependent (BOLD) Using Functional Magnetic Resonance Imaging (fMRI) of Brain Activation Signals in Response to Blunt Pressure Pain: Percent Change in BOLD Activations Including Outliers
NCT00760474 (17) [back to overview]Voxel-wise Blood Oxygen Level Dependent (BOLD) Using Functional Magnetic Resonance Imaging (fMRI) of Brain Activation Signals in Response to a Control Visual (Checkerboard) Stimuli
NCT00760474 (17) [back to overview]Sphygmomanometry Evoked Allodynia in Relation to the Blood Pressure (BP) Value at Which Allodynia Was Evoked
NCT00760474 (17) [back to overview]Resting State Brain Activity (Connectivity Analysis) Assessed by Temporal Correlations in Low Frequency fMRI BOLD Signals Across Pain Processing Regions
NCT00760474 (17) [back to overview]Pain at the Bilateral Epicondyle Tender Points Assessed Using American College of Rheumatology (ACR) Classification Criteria
NCT00760474 (17) [back to overview]Gracely Box Scales for Pain Unpleasantness (GBSunp) Including Outliers
NCT00760474 (17) [back to overview]Gracely Box Scales for Pain Intensity (GBSint) Including Outliers
NCT00785577 (26) [back to overview]Time to Response
NCT00785577 (26) [back to overview]Percentage of Participants With Reported Hypoglycemic Events
NCT00785577 (26) [back to overview]Patient Global Impression of Improvement (PGI-I) Score at 5 Weeks
NCT00785577 (26) [back to overview]Number of Participants With Neurological Treatment Emergent Adverse Events (TEAEs)
NCT00785577 (26) [back to overview]Number of Participants With 30% Reduction in Weekly Mean 24-hour Average Pain Severity (APS) Score
NCT00785577 (26) [back to overview]Change From Baseline of European Quality of Life Scale - 5 Dimensions (EQ-5D) at 5 Weeks: United States Population Based Index Score
NCT00785577 (26) [back to overview]Change From Baseline in Weekly Mean Worst Daily Pain Severity Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Weekly Mean Night Pain Severity Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Weekly Mean 24-hour Average Pain Severity (APS) Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Vital Signs: Pulse Rate at 5 Weeks
NCT00785577 (26) [back to overview]Pharmacokinetic (PK) Parameter: Clearance of LY545694 (CLp) and Compound 645838 (CLm)
NCT00785577 (26) [back to overview]Change From Baseline in Short-form McGill Pain Questionnaire (SF-MPQ) Sensory Subscale Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Short Form-36 (SF-36) Health Survey Bodily Pain Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Sheehan Disability Scale (SDS) Global Impairment Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Overall Total Quick Inventory of Depressive Symptomatology (QIDS) Score
NCT00785577 (26) [back to overview]Change From Baseline in Neuropathy-Specific Quality of Life (NeuroQoL) Questionnaire Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Clinical Global Impression of Severity (CGI-S) Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Average Brief Pain Inventory - Interference (BPI-I) Subscale Score at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Assessment of Sleep Questionnaire (ASQ) Total Score at 5 Weeks
NCT00785577 (26) [back to overview]Number of Participants With Suicidal Behaviors and Ideations
NCT00785577 (26) [back to overview]Number of Participants With Serious Treatment Emergent Abnormal High or Low Laboratory Values
NCT00785577 (26) [back to overview]Number of Participants With Electrocardiogram Change in Heart Rate Using Bazett's (QTcB) and Fridericia's (QTcF) Formulas
NCT00785577 (26) [back to overview]Number of Participants Who Discontinued Due to Adverse Events (AEs) During the Therapy (Double-blind) Phase and 1-Week Washout (Follow-up) Phase
NCT00785577 (26) [back to overview]Number of Participants Reporting Blurry or Hazy Vision Using the Subjective Vision Inventory (SVI) Question 1 (Q1) at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Vital Signs: Systolic Blood Pressure and Diastolic Blood Pressure at 5 Weeks
NCT00785577 (26) [back to overview]Change From Baseline in Brief Pain Inventory - Severity (BPI-S) Subscale Score at 5 Weeks
NCT00806026 (21) [back to overview]Change From Baseline in Limb Pain-VAS at Week 12
NCT00806026 (21) [back to overview]Work Productivity and Activity Impairment Questionnaire: Specific Health Problem (WPAI-SHP) at Week 12
NCT00806026 (21) [back to overview]Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 12
NCT00806026 (21) [back to overview]Medical Outcomes Study-Short Form 36 (SF-36) at Week 12
NCT00806026 (21) [back to overview]Subjective Sleep Questionnaire (SSQ): Subjective Waking After Sleep Onset (WASO)
NCT00806026 (21) [back to overview]Subjective Sleep Questionnaire (SSQ): Quality of Sleep Subscale Score at Week 12
NCT00806026 (21) [back to overview]Subjective Sleep Questionnaire (SSQ): Number of Awakenings Subscale Score at Week 12
NCT00806026 (21) [back to overview]Subjective Sleep Questionnaire (SSQ): Latency Subscale Score at Week 12
NCT00806026 (21) [back to overview]Subjective Sleep Questionnaire (SSQ): Hours of Sleep Subscale Score at Week 12
NCT00806026 (21) [back to overview]Severity of Augmentation Symptoms at Week 12
NCT00806026 (21) [back to overview]RLS-Next Day Impact (RLS-NDI)
NCT00806026 (21) [back to overview]Restless Legs Syndrome-Quality of Life Scale (RLS-QoL) at Week 12
NCT00806026 (21) [back to overview]Restless Legs Syndrome (RLS) Symptom Severity
NCT00806026 (21) [back to overview]Percentage of Participants With Augmentation
NCT00806026 (21) [back to overview]Percentage of Participants Responding to Treatment at Week 12
NCT00806026 (21) [back to overview]Number of Participants With Medical Outcomes Study-Sleep Scale (MOS-SS)- Optimal Sleep at Week 12
NCT00806026 (21) [back to overview]Limb Pain-Visual Analog Scale (Limb Pain-VAS)
NCT00806026 (21) [back to overview]Clinical Global Impressions-Severity (CGI-S) at Week 12
NCT00806026 (21) [back to overview]Change From Baseline in the RLS Symptom Severity at Week 12
NCT00806026 (21) [back to overview]Change From Baseline in SSQ: Subjective WASO at Week 12
NCT00806026 (21) [back to overview]Change From Baseline in RLS-NDI at Week 12
NCT00830128 (12) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Snoring at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Somnolence at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Pain Visual Analog Scale (Pain VAS) Score at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) - Subscale Score at Endpoint
NCT00830128 (12) [back to overview]Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
NCT00830128 (12) [back to overview]Medical Outcomes Study (MOS) Sleep Scale - Optimal Sleep at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) - Total Scores at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Awaken Short of Breath or With a Headache at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Overall Sleep Problems Index at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Quantity of Sleep at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Sleep Adequacy at Endpoint
NCT00830128 (12) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Sleep Disturbance at Endpoint
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Tiredness
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Depression
NCT00830167 (33) [back to overview]Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- General Health Perception
NCT00830167 (33) [back to overview]Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Bodily Pain
NCT00830167 (33) [back to overview]Change From Baseline for Numerical Rating Scale (NRS) Pain Scores at Endpoint-LOCF (Last Observation Carried Forward) Relative to Baseline
NCT00830167 (33) [back to overview]"Percentage of Participants Who Was Categorized as Improved (Very Much Improved, Much Improved, or a Minimally Improved) According to the Patient Global Impressions of Change (PGIC)"
NCT00830167 (33) [back to overview]Medical Outcomes Study (MOS) Sleep Scale - Number of Participants With Optimal Sleep at Endpoint
NCT00830167 (33) [back to overview]Change From Baseline in Sleep Quality Score at Endpoint
NCT00830167 (33) [back to overview]Change From Baseline in Pain Visual Analog Scale (Pain VAS) Score at Endpoint
NCT00830167 (33) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Somnolence
NCT00830167 (33) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Snoring
NCT00830167 (33) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Sleep Disturbance
NCT00830167 (33) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Sleep Adequacy
NCT00830167 (33) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Quantity of Sleep
NCT00830167 (33) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Overall Sleep Problems Index
NCT00830167 (33) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Awaken Short of Breath or With a Headache
NCT00830167 (33) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale (HADS) - Depression
NCT00830167 (33) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale (HADS) - Anxiety
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Work Miss
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Total Scores
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Stiffness
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Physical Function
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Pain
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Morning
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Housework
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Feel Good
NCT00830167 (33) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Anxious
NCT00830167 (33) [back to overview]Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Vitality
NCT00830167 (33) [back to overview]Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Social Functioning
NCT00830167 (33) [back to overview]Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Role Limitations-Physical
NCT00830167 (33) [back to overview]Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Role Limitations-Emotional
NCT00830167 (33) [back to overview]Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Physical Functioning
NCT00830167 (33) [back to overview]Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Mental Health
NCT00843284 (5) [back to overview]Anxiety and Depression Symptoms
NCT00843284 (5) [back to overview]Daily Average Pain Scores
NCT00843284 (5) [back to overview]Pain Related Sleep Interference
NCT00843284 (5) [back to overview]Patient Global Improvement of Change (PGIC) at Final Visit (Week 8 or Discontinuation)
NCT00843284 (5) [back to overview]Clinician Global Improvement of Change (CGIC) at Final Visit (Week 8 or Discontinuation)
NCT00855738 (17) [back to overview]Change From Baseline to Month 6 in Total Number of Days Hospitalized Because of Epilepsy
NCT00855738 (17) [back to overview]Percent of Participants With Cessation of Occupation, Requirement of Caregiver, or Admission to Intensive Care Unit
NCT00855738 (17) [back to overview]Percent of Participants Indicating Optimal Sleep on the Optimal Sleep Subscale: Medical Outcomes Study Sleep Scale (MOS-SS)
NCT00855738 (17) [back to overview]Percent of Participants Classified as Responders
NCT00855738 (17) [back to overview]Percent of Participants That Reduced, Maintained and Increased the Doses of the Initial Treatment Administered in Monotherapy
NCT00855738 (17) [back to overview]Percent of Participants That Reduced, Maintained and Increased Their Doses of New Antiepileptic Drugs (AED)
NCT00855738 (17) [back to overview]Change in Sleep Disturbances From Baseline to Month 6: Medical Outcomes Study Sleep Scale (MOS-SS)
NCT00855738 (17) [back to overview]Percent of Participants With Reduction in Number of Seizures >=25% and >=75% During the Last 3 Months of Treatment
NCT00855738 (17) [back to overview]Percent of Seizure-free Participants During the Last 3 Months Before Discontinuation
NCT00855738 (17) [back to overview]Change From Baseline to Months 3 and 6 in Health Condition: Euro Quality of Life Scale (EQ-5D) Visual Analog Scale (VAS)
NCT00855738 (17) [back to overview]Change From Baseline to Month 6 in Visits to a Specialist or the Emergency Room Because of Epilepsy
NCT00855738 (17) [back to overview]Change From Baseline to Month 6 in the Hospital Anxiety and Depression Scale (HADS)
NCT00855738 (17) [back to overview]Change From Baseline to Month 6 in Quality of Life 10 Domains (QOLIE-10)
NCT00855738 (17) [back to overview]Time to First Seizure
NCT00855738 (17) [back to overview]Percent of Participants Who Continued on Study Medication to Month 6
NCT00855738 (17) [back to overview]Percent of Participants Reaching Monotherapy
NCT00855738 (17) [back to overview]Percent Change From Baseline in the Median Number of Seizures During the Last 3 Months of Treatment
NCT00883740 (18) [back to overview]Latency of Sleep Onset (LSO)
NCT00883740 (18) [back to overview]Total Sleep Time (TST)
NCT00883740 (18) [back to overview]Wake Time After Sleep (WTAS)
NCT00883740 (18) [back to overview]Subjective Wake After Sleep Onset (sWASO)
NCT00883740 (18) [back to overview]Number of Awakenings After Sleep Onset (NAASO 1)
NCT00883740 (18) [back to overview]Number of Awakenings After Sleep Onset (NAASO 2)
NCT00883740 (18) [back to overview]Sleep Efficiency (SE)
NCT00883740 (18) [back to overview]Slow Wave Sleep (SWS)
NCT00883740 (18) [back to overview]Subjective Total Sleep Time (sTST)
NCT00883740 (18) [back to overview]Sleep Quality
NCT00883740 (18) [back to overview]Daily Pain Score
NCT00883740 (18) [back to overview]Wake Time During Sleep (WTDS)
NCT00883740 (18) [back to overview]Change From Baseline in MOS-SS Sleep Problems Index II Weeks 5 and 11
NCT00883740 (18) [back to overview]Change From Baseline in MOS-SS Sleep Disturbance at Weeks 5 and 11
NCT00883740 (18) [back to overview]Wake After Sleep Onset (WASO) at Weeks 5 and 11
NCT00883740 (18) [back to overview]Latency to Persistent Sleep (LPS)
NCT00883740 (18) [back to overview]WASO by Each Quarter of the Night
NCT00883740 (18) [back to overview]WASO by Hour of the Night
NCT00892008 (11) [back to overview]Physician's Clinical Global Impression (CGI) of Treatment Satisfaction at the Second and Final Visits
NCT00892008 (11) [back to overview]Patient's Clinical Global Impression (CGI) of Efficacy at Second and Final Visit
NCT00892008 (11) [back to overview]Discontinuations Due to Adverse Events
NCT00892008 (11) [back to overview]Number and Severity of Adverse Events (All Causalities); Baseline to Final Visit (Week 4)
NCT00892008 (11) [back to overview]Patient's Clinical Global Impression (CGI) of Tolerability at Second and Final Visit
NCT00892008 (11) [back to overview]Change From Baseline in Visual Analogue Scale (VAS) Score
NCT00892008 (11) [back to overview]VAS Pain Score at Baseline and Final Visit
NCT00892008 (11) [back to overview]Physician's Clinical Global Impression (CGI) on Tolerability at Second and Final Viist
NCT00892008 (11) [back to overview]VAS Pain Score at Baseline (BL) and Second Visit
NCT00892008 (11) [back to overview]Patient's Clinical Global Impression (CGI) of Treatment Satisfaction at the Second and Final Visits
NCT00892008 (11) [back to overview]Physician's Clinical Global Impression (CGI) of Efficacy at Second and Final Visit
NCT00905437 (6) [back to overview]Number of Participants With Rescue Medication Usage
NCT00905437 (6) [back to overview]Mean Anxiety Visual Analogue Scale (A-VAS)
NCT00905437 (6) [back to overview]Time to Mobilization After Surgery
NCT00905437 (6) [back to overview]Mean Daily Pain Score
NCT00905437 (6) [back to overview]Mean Daily Sleep Interference Score
NCT00905437 (6) [back to overview]Mean Pain on Movement Score
NCT00905580 (4) [back to overview]The Number of Participants With the Indicated Side Effects - Nausea & Vomiting, Sedation, Headache, Dizziness Etc.
NCT00905580 (4) [back to overview]Pain Scores (VNRS) at 1, 6, 24, 48 Hours Postoperatively.
NCT00905580 (4) [back to overview]Number of Patients With Hypoesthesia in the Anterior Chest at 3 Months After Operation.
NCT00905580 (4) [back to overview]Number of Patients Who Required Additional Analgesics During the First 48 Hours Postoperatively
NCT00908375 (3) [back to overview]Patient's Global Impression of Change at 3 Weeks
NCT00908375 (3) [back to overview]Pain Scores (NRS) at 3-weeks
NCT00908375 (3) [back to overview]Oswestry Disability Questionnaires
NCT00922987 (9) [back to overview]Number of Participants With Change in Clinical Global Impression of Severity (CGI-C) From Baseline at Final Visit
NCT00922987 (9) [back to overview]Number of Participants With no Seizures (Partial or Other) During the Last 4 Weeks in the Study
NCT00922987 (9) [back to overview]Percentage Change From Baseline in 28 Day Partial Seizure Frequency at Final Visit
NCT00922987 (9) [back to overview]Percentage of Participants With a 50 Percent or Greater Reduction From Baseline in 28 Day Partial Seizure Frequency
NCT00922987 (9) [back to overview]Change From Baseline in Medical Outcome Study (MOS) Sleep Scale Sub-scores at Week 16 or ET
NCT00922987 (9) [back to overview]Number of Participants With Categorical Scores on Clinical Global Impression of Severity (CGI-S)
NCT00922987 (9) [back to overview]Number of Participants With Concomitant Co-morbidities
NCT00922987 (9) [back to overview]Number of Participants With Concomitant Drug Treatments
NCT00922987 (9) [back to overview]Change From Baseline in Visual Analog Scale of Anxiety (VAS-A) Scores at Week 4 and Final Visit
NCT00929344 (3) [back to overview]Change From Baseline in Drinking Quantity and Frequency Using Drinks Per Drinking Day at Week 12
NCT00929344 (3) [back to overview]Change From Baseline in Drinking Quantity and Frequency Using Drinks Per Week at Week 12
NCT00929344 (3) [back to overview]Change From Baseline in Drinking Quantity and Frequency Using Drinking Days Per Week at Week 12
NCT00938548 (3) [back to overview]Number of Participants With the Indicated Side Effects - Nausea & Vomiting, Sedation, Headache, Dizziness Etc.
NCT00938548 (3) [back to overview]Pain Scores (Verbal Numerical Rating Scale;VNRS) During Postoperative Hours.
NCT00938548 (3) [back to overview]Pain Scores (VNRS) at 1 Week and 1 Month After Operation
NCT00977197 (12) [back to overview]Mean Diarrhea BSS Score Over the Last 4 Weeks of the Study (Weeks 9-12)
NCT00977197 (12) [back to overview]Mean Overall Severity BSS Score at Week 12
NCT00977197 (12) [back to overview]Mean Overall Severity of Irritable Bowel Syndrome (IBS) Symptoms BSS Score Last 4 Weeks of the Study (Weeks 9-12)
NCT00977197 (12) [back to overview]Mean Pain BSS Score at Week 12
NCT00977197 (12) [back to overview]Mean Pain Bowel Symptom Scale (BSS) Score Over Last 4 Weeks of Study (Weeks 9-12)
NCT00977197 (12) [back to overview]Number of Subjects With Adequate Relief of IBS Symptoms at Least 50% of the Last 4 Weeks of Therapy
NCT00977197 (12) [back to overview]Number of Subjects With Greater Than or Equal to a 30 Point Change in Pain BSS Score
NCT00977197 (12) [back to overview]Mean Bloating BSS Score at Week 12
NCT00977197 (12) [back to overview]Mean Bloating BSS Score Over the Last 4 Weeks of the Study (Weeks 9-12)
NCT00977197 (12) [back to overview]Mean Constipation BSS Score at Week 12
NCT00977197 (12) [back to overview]Mean Constipation BSS Score Over Last 4 Weeks of Study (Weeks 9-12)
NCT00977197 (12) [back to overview]Mean Diarrhea BSS Score at Week 12
NCT00978341 (7) [back to overview]Dynamic Allodynia Pain Score
NCT00978341 (7) [back to overview]Mechanical Pain Sensitivity Stimulus-Response Function
NCT00978341 (7) [back to overview]Neuropathic Pain Symptom Inventory (NPSI)
NCT00978341 (7) [back to overview]Present Pain Intensity Score
NCT00978341 (7) [back to overview]Punctate Allodynia Area
NCT00978341 (7) [back to overview]Daily Pain Score
NCT00978341 (7) [back to overview]Dynamic Allodynia Area
NCT00991276 (31) [back to overview]Latency to Stage R Sleep (LREM)
NCT00991276 (31) [back to overview]Number of Arousals (NASO)
NCT00991276 (31) [back to overview]Number of Awakenings of at Least 1 Epoch After Sleep Onset (NAASO1)
NCT00991276 (31) [back to overview]Number of Awakenings of at Least 2 Epochs After Sleep Onset (NAASO2)
NCT00991276 (31) [back to overview]Percentage of Participants With Response to Clinical Global Impression - Improvement (CGI-I) Scale
NCT00991276 (31) [back to overview]Periodic Limb Movement Arousal Index (PLMAI)
NCT00991276 (31) [back to overview]Periodic Limb Movement Index (PLMI)
NCT00991276 (31) [back to overview]Periodic Limb Movement in Sleep Index (PLMSI)
NCT00991276 (31) [back to overview]Restless Leg Syndrome - Quality of Life Scale (RLS-QoL)
NCT00991276 (31) [back to overview]Restless Legs Syndrome-Next Day Impact (RLS-NDI)
NCT00991276 (31) [back to overview]Sleep Efficiency (SE)
NCT00991276 (31) [back to overview]Subjective Sleep Questionnaire (SSQ): Latency Subscale
NCT00991276 (31) [back to overview]Subjective Sleep Questionnaire (SSQ): Number of Awakenings Subscale
NCT00991276 (31) [back to overview]Subjective Sleep Questionnaire (SSQ): Quality of Sleep Subscale
NCT00991276 (31) [back to overview]Subjective Sleep Questionnaire (SSQ): Total Wake Time After Sleep Onset Subscale
NCT00991276 (31) [back to overview]Subjective Total Sleep Time (sTST)
NCT00991276 (31) [back to overview]Total Sleep Time (TST)
NCT00991276 (31) [back to overview]Wake Time After Sleep (WTAS)
NCT00991276 (31) [back to overview]Wake Time During Sleep (WTDS)
NCT00991276 (31) [back to overview]Hourly and Quarterly Assessment of Number of Arousals (NASO)
NCT00991276 (31) [back to overview]Hourly and Quarterly Assessment of Number of Awakenings of at Least 1 Epoch After Sleep Onset (NAASO1)
NCT00991276 (31) [back to overview]Hourly and Quarterly Assessment of Number of Awakenings of at Least 2 Epoch After Sleep Onset (NAASO2)
NCT00991276 (31) [back to overview]Hourly and Quarterly Assessment of Periodic Limb Movement (PLM)
NCT00991276 (31) [back to overview]Hourly and Quarterly Assessment of Sleep Efficiency (SE)
NCT00991276 (31) [back to overview]Hourly and Quarterly Assessment of Wake After Sleep Onset (WASO)
NCT00991276 (31) [back to overview]Medical Outcomes Study - Sleep Scale (MOS-SS)
NCT00991276 (31) [back to overview]Minutes of Stage N1, N2, N3 and R Sleep
NCT00991276 (31) [back to overview]Arousal Index (NASOI)
NCT00991276 (31) [back to overview]International Restless Legs Syndrome Study Group Rating Scale (IRLS)
NCT00991276 (31) [back to overview]Latency to Persistent Sleep (LPS)
NCT00991276 (31) [back to overview]Wake After Sleep Onset (WASO)
NCT01020474 (8) [back to overview]Mean Change From Baseline to Weekly Mean Pain Score - Daily Pain Numeric Rating Scale (NRS)
NCT01020474 (8) [back to overview]Mean Change From Baseline to Weekly Mean Sleep Quality Score (NRS)
NCT01020474 (8) [back to overview]Proportion of Patient Global Impression Change (PGIC) at Week 15
NCT01020474 (8) [back to overview]Change From Baseline to Week 15 in Mean Sleep Quality Diary Score
NCT01020474 (8) [back to overview]Change From Baseline to Week 15 in Mean Pain Diary Score
NCT01020474 (8) [back to overview]Change From Baseline to Week 15 in Mean Pain Numeric Rating Scale (1 Week Recall Period)
NCT01020474 (8) [back to overview]Proportion of 30% Responders in Weekly Mean Pain Score (NRS) at Week 15
NCT01020474 (8) [back to overview]Proportion of 50% Responder in Weekly Mean Pain Score (NRS) at Week 15
NCT01020526 (1) [back to overview]Change From Baseline in Pain Numeric Rating Scale by Week
NCT01049217 (30) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) Subscales and Total Intensity Score at Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Change From Baseline in 36-Item Short-Form Health Survey (SF-36) at Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Change From Baseline in Brief Pain Inventory-Short Form (BPI-sf) Score at Week 4, 8, 12, 16 and Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scales (HADS) at Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Change From Baseline in Mean Pain Score at Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) Item Scores at Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Number of Participants With Categorical Scores on Clinician Global Impression of Change (CGIC)
NCT01049217 (30) [back to overview]Change From Baseline in Numeric Rating Scale (NRS)-Current Pain Score at Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 and Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Change From Baseline in Numeric Rating Scale (NRS)-Sleep Interference Score at Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 and Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Medical Outcomes Study-Sleep Scale (MOS-SS): Number of Participants With Optimal Sleep
NCT01049217 (30) [back to overview]Neuropathic Pain Symptom Inventory (NPSI): Change From Baseline in Number of Participants With Duration of Spontaneous Pain and Number of Pain Attacks at Endpoint (up to Week 16)
NCT01049217 (30) [back to overview]Sitting Heart Rate
NCT01049217 (30) [back to overview]Productivity and Activity Impairment Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire
NCT01049217 (30) [back to overview]Number of Participants With Treatment-Emergent (TE) Adverse Events (AEs) or Serious Adverse Events (SAEs)
NCT01049217 (30) [back to overview]Number of Participants With Response to Sheehan-Suicidality Tracking Scale (S-STS) Mapped to the Columbia Classification Algorithm of Suicide Assessment (C-CASA) Categories
NCT01049217 (30) [back to overview]Number of Participants With Response to Patient Health Questionnaire-8 (PHQ-8)
NCT01049217 (30) [back to overview]Number of Participants With Neurological Examination Findings
NCT01049217 (30) [back to overview]Total Sleep Time (TST) and Minutes of Interrupted Sleep (MIS)
NCT01049217 (30) [back to overview]Number of Participants With Categorical Scores on Patient Global Impression of Change (PGIC)
NCT01049217 (30) [back to overview]Sitting Systolic and Diastolic Blood Pressure
NCT01049217 (30) [back to overview]Number of Participants Who Were Employed or Unemployed Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire
NCT01049217 (30) [back to overview]Number of Participants With Abnormal Physical Examination Findings
NCT01049217 (30) [back to overview]Number of Participants With Abnormal Laboratory Test Findings
NCT01049217 (30) [back to overview]Body Weight
NCT01049217 (30) [back to overview]Absenteeism and Presenteeism Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire
NCT01049217 (30) [back to overview]Total Activity Counts
NCT01049217 (30) [back to overview]Sleep Fragmentation Index (SFI)
NCT01049217 (30) [back to overview]Sleep Efficiency
NCT01049217 (30) [back to overview]Percentage Day Time Above Sedentary Level
NCT01057693 (27) [back to overview]Weekly Mean Sleep Interference Score (Double-Blind Phase)
NCT01057693 (27) [back to overview]Weekly Mean Pain Scores (Single-Blind Phase)
NCT01057693 (27) [back to overview]Weekly Mean Pain Scores (Double-Blind Phase)
NCT01057693 (27) [back to overview]Quality of Life Questionnaire- Diabetic Neuropathy (QOL-DN) (Single-Blind Phase)
NCT01057693 (27) [back to overview]Quality of Life Questionnaire- Diabetic Neuropathy (QOL-DN) (Double-Blind Phase)
NCT01057693 (27) [back to overview]Hospital Anxiety and Depression Scale (HADS) (Single-Blind Phase)
NCT01057693 (27) [back to overview]Medical Outcomes Study -Sleep Scale (MOS-SS) (Double-Blind Phase)
NCT01057693 (27) [back to overview]Endpoint Mean Sleep Interference Score (Double-Blind Phase)
NCT01057693 (27) [back to overview]Endpoint Mean Sleep Interference Score (Single-Blind Phase)
NCT01057693 (27) [back to overview]Number of Participants With Optimal Sleep Assessed Using Medical Outcomes Study-Sleep Scale (MOS-SS) (Double-Blind Phase)
NCT01057693 (27) [back to overview]Percentage of Participants With At Least 30 Percent and 50 Percent Reduction in Mean Pain Score (Single-Blind Phase)
NCT01057693 (27) [back to overview]Percentage of Participants With At Least 30 Percent and 50 Percent Reduction in Mean Pain Score (Double-Blind Phase)
NCT01057693 (27) [back to overview]Medical Outcomes Study -Sleep Scale (MOS-SS) (Single-Blind Phase)
NCT01057693 (27) [back to overview]Patient Global Impression of Change (PGIC) (Double-Blind Phase)
NCT01057693 (27) [back to overview]Patient Global Evaluation of Study Medication (GESM) (Single-Blind Phase)
NCT01057693 (27) [back to overview]Pain Visual Analog Scale (VAS) (Double-Blind Phase)
NCT01057693 (27) [back to overview]Time to Loss of Pain Response (Double-Blind Phase)
NCT01057693 (27) [back to overview]Brief Pain Inventory-Short Form (BPI-sf) (Double-Blind Phase)
NCT01057693 (27) [back to overview]Brief Pain Inventory-Short Form (BPI-sf) (Single-Blind Phase)
NCT01057693 (27) [back to overview]Patient Global Impression of Change (PGIC) (Single-Blind Phase)
NCT01057693 (27) [back to overview]Number of Participants With Optimal Sleep Assessed Using Medical Outcomes Study-Sleep Scale (MOS-SS) (Single-Blind Phase)
NCT01057693 (27) [back to overview]Pain Visual Analog Scale (VAS) (Single-Blind Phase)
NCT01057693 (27) [back to overview]Hospital Anxiety and Depression Scale (HADS) (Double-Blind Phase)
NCT01057693 (27) [back to overview]Patient Global Evaluation of Study Medication (GESM) (Double-Blind Phase)
NCT01057693 (27) [back to overview]Change From Single-Blind Baseline in Mean Pain Score at Week 6 During Single-Blind Phase
NCT01057693 (27) [back to overview]Weekly Mean Sleep Interference Score (Single-Blind Phase)
NCT01057693 (27) [back to overview]Change From Single-Blind Baseline in Mean Pain Score at Week 19 During Double-Blind Phase
NCT01089556 (31) [back to overview]Percentage of Participants With a Reduction of Greater Than or Equal to 50% on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 16 Endpoint
NCT01089556 (31) [back to overview]Percentage of Participants With a Reduction of Greater Than or Equal to 30% on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 8 Endpoint
NCT01089556 (31) [back to overview]Percentage of Participants With a Decrease of Greater Than or Equal to 2 Points on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 8 Endpoint
NCT01089556 (31) [back to overview]Percentage of Participants With a Decrease of Greater Than or Equal to 2 Points on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 16 Endpoint
NCT01089556 (31) [back to overview]Patient Global Impression of Improvement (PGI-I) Score at Week 8 Endpoint
NCT01089556 (31) [back to overview]Patient Global Impression of Improvement (PGI-I) Score at Week 16 Endpoint
NCT01089556 (31) [back to overview]Number of Participants With Treatment Emergent Adverse Events (TEAEs) Between Week 8 and Week 16 Endpoint
NCT01089556 (31) [back to overview]Number of Participants With Treatment Emergent Adverse Events (TEAE) Between Baseline and Week 8 Endpoint
NCT01089556 (31) [back to overview]Number of Participants Who Discontinued From Study Between Week 8 and Week 16 Endpoint
NCT01089556 (31) [back to overview]Number of Participants Who Discontinued From Study Between Baseline and Week 8 Endpoint
NCT01089556 (31) [back to overview]Mean Change in Heart Rate From Week 8 to Week 16 Endpoint
NCT01089556 (31) [back to overview]Mean Change in Heart Rate From Baseline to Week 8 Endpoint
NCT01089556 (31) [back to overview]Mean Change From Week 8 to Week 16 Endpoint on the Neuropathic Pain Symptom Inventory (NPSI) Questionnaire
NCT01089556 (31) [back to overview]Mean Change From Week 8 to Week 16 Endpoint in Sheehan Disability Scale (SDS)
NCT01089556 (31) [back to overview]Mean Change From Week 8 to Week 16 Endpoint in Items of the Brief Pain Inventory (BPI) Modified Short Form Worst Pain Score
NCT01089556 (31) [back to overview]Mean Change From Baseline to Week 8 Endpoint on the Neuropathic Pain Symptom Inventory (NPSI) Questionnaire
NCT01089556 (31) [back to overview]Mean Change From Baseline to Week 8 Endpoint in Sheehan Disability Scale (SDS)
NCT01089556 (31) [back to overview]Clinical Global Impression of Improvement (CGI-I) at Week 8 Endpoint
NCT01089556 (31) [back to overview]Clinical Global Impression of Improvement (CGI-I) at Week 16 Endpoint
NCT01089556 (31) [back to overview]Change From Week 8 to Week 16 Endpoint in 24 Hour Average Pain Item Score on the Brief Pain Inventory (BPI) Modified Short Form
NCT01089556 (31) [back to overview]Average Number of Hours Worked for Pay Per Week Week 8 Through Week 16
NCT01089556 (31) [back to overview]Average Number of Hours Worked for Pay Per Week Baseline Through Week 8
NCT01089556 (31) [back to overview]Mean Change From Baseline to Week 8 Endpoint in 24 Hour Average Pain Item Score on the Brief Pain Inventory (BPI) Modified Short Form
NCT01089556 (31) [back to overview]Resource Utilization (Number of Days Hospitalized, Number of Days of Sick Leave) Week 8 Through Week 16
NCT01089556 (31) [back to overview]Percentage of Participants With a Reduction of Greater Than or Equal to 30% on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 16 Endpoint
NCT01089556 (31) [back to overview]Resource Utilization (Number of Days Hospitalized, Number of Days of Sick Leave) Baseline Through Week 8
NCT01089556 (31) [back to overview]Mean Change in Blood Pressure (BP) From Week 8 to Week 16 Endpoint
NCT01089556 (31) [back to overview]Mean Change in Blood Pressure (BP) From Baseline to Week 8 Endpoint
NCT01089556 (31) [back to overview]Mean Change From Week 8 to Week 16 Endpoint in Hospital Anxiety and Depression Scale (HADS)
NCT01089556 (31) [back to overview]Mean Change From Baseline to Week 8 Endpoint in Hospital Anxiety and Depression Scale (HADS)
NCT01089556 (31) [back to overview]Percentage of Participants With a Reduction of Greater Than or Equal to 50% on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 8 Endpoint
NCT01094808 (10) [back to overview]Colonic Compliance
NCT01094808 (10) [back to overview]Pain Sensation Rating Averaged Across 4 Distension Pressures (16, 24, 30, and 36 mg Hg)
NCT01094808 (10) [back to overview]Postprandial Colonic Tone [Reported] as the Symmetric Percent [Change]in Baseline Colonic Barostat Balloon Volume
NCT01094808 (10) [back to overview]Sensory Threshold for Gas
NCT01094808 (10) [back to overview]Sensory Threshold for Pain
NCT01094808 (10) [back to overview]Postprandial Motility Index Over 30 Minutes
NCT01094808 (10) [back to overview]Sensation Ratings for Gas at 16, 24, and 36 mm Hg Distension
NCT01094808 (10) [back to overview]Sensation Ratings for Pain at 16, 24, and 36 mm Hg Distension
NCT01094808 (10) [back to overview]Sensation Ratings for Pain and Gas at 30 mm Hg Distension Above Baseline Operating Pressure
NCT01094808 (10) [back to overview]Gas Sensation Rating Averaged Across 4 Distension Pressures (16, 24, 30, and 36 mg Hg)
NCT01097577 (6) [back to overview]Epithelial Healing Time
NCT01097577 (6) [back to overview]Clinical Efficacy
NCT01097577 (6) [back to overview]Clinical Efficacy 2
NCT01097577 (6) [back to overview]PPI Score
NCT01097577 (6) [back to overview]Quality of Life - BPI
NCT01097577 (6) [back to overview]Total MPQ Score
NCT01117766 (10) [back to overview]Mean Change From Baseline in Heat Pain Sensitivity at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Weekly Pain Score From the Daily Diary at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Mechanical Pain Sensitivity (Von Frey) at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Patient's Global Impression of Change (PGIC) at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Punctate Allodynia Area (Von Frey) at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Test-Day Global Pain Intensity at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Dynamic Allodynia Intensity at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Dynamic Allodynia Area at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Cold Pain Sensitivity at Visits 3 and 6 and Visits 4 and 7
NCT01117766 (10) [back to overview]Mean Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) Total Score at Visits 4 and 7
NCT01145417 (9) [back to overview]Number of Participants Who Were Employed or Unemployed Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire
NCT01145417 (9) [back to overview]Number of Participants With Categorical Scores on Patient Global Impression of Change (PGI-C)
NCT01145417 (9) [back to overview]Number of Participants With Response to Patient Health Questionnaire-8 (PHQ-8)
NCT01145417 (9) [back to overview]Number of Participants With Response to Sheehan-Suicidality Tracking Scale (S-STS) Mapped to the Columbia Classification Algorithm of Suicide Assessment (C-CASA) Categories
NCT01145417 (9) [back to overview]Number of Participants With Treatment Emergent (TE) Adverse Events (AEs) and Serious Adverse Events (SAEs)
NCT01145417 (9) [back to overview]Productivity and Activity Impairment Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire
NCT01145417 (9) [back to overview]Visual Analogue Scale for Pain (VAS-pain)
NCT01145417 (9) [back to overview]Absenteeism and Presenteeism Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire
NCT01145417 (9) [back to overview]36-Item Short-Form Health Survey (SF-36)
NCT01202227 (16) [back to overview]Number of Participants With Generalized or Abdominal Edema
NCT01202227 (16) [back to overview]Number of Participants With Facial/Periorbital Edema
NCT01202227 (16) [back to overview]Number of Participants With Deterioration in Neurological Examination Findings
NCT01202227 (16) [back to overview]Number of Participants With Collateral Superficial Veins (Non-varicose) Related to Deep Vein Thrombosis (DVT)
NCT01202227 (16) [back to overview]Number of Participants With Visual Field Deteriorated
NCT01202227 (16) [back to overview]Number of Participants With Swelling Related to Deep Vein Thrombosis (DVT)
NCT01202227 (16) [back to overview]Number of Participants With Suicidal Ideation According to Sheehan Suicidality Tracking Scale (Sheehan-STS)
NCT01202227 (16) [back to overview]Number of Participants With Skin Redness Related to Deep Vein Thrombosis (DVT)
NCT01202227 (16) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire (SF-MPQ) at Each Time Point: Total Scores
NCT01202227 (16) [back to overview]Number of Participants With Pitting Edema Related to Deep Vein Thrombosis (DVT)
NCT01202227 (16) [back to overview]Number of Participants With Peripheral Edema
NCT01202227 (16) [back to overview]Number of Participants With Localized Tenderness Related to Deep Vein Thrombosis (DVT)
NCT01202227 (16) [back to overview]Number of Participants With Localized Pain Related to Deep Vein Thrombosis (DVT)
NCT01202227 (16) [back to overview]Change From Baseline in the Modified Brief Pain Inventory (10 Item) (mBPI-10)Total Scores at Last Evaluation Score
NCT01202227 (16) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire (SF-MPQ) at Each Time Point: Affective Scores
NCT01202227 (16) [back to overview]Change From Baseline in Short-Form McGill Pain Questionnaire (SF-MPQ) at Each Time Point: Sensory Scores
NCT01220180 (20) [back to overview]Change From Baseline in Daily Pain Score for NeP in PP Population at Week 6
NCT01220180 (20) [back to overview]Change From Baseline in Daily Pain Score for NeP in ITT Population at Week 6
NCT01220180 (20) [back to overview]Change From Baseline in Daily Pain Score for Fibromyalgia in PP Population at Week 6
NCT01220180 (20) [back to overview]Number of Participants With CGIC Scale for Fibromyalgia in ITT Population
NCT01220180 (20) [back to overview]Percentage of Participants Achieving 28 Days Seizure Free Period in Per Protocol (PP) Population
NCT01220180 (20) [back to overview]Percentage of Participants Achieving 28 Days Seizure Free Period in Intent-to Treat (ITT) Population
NCT01220180 (20) [back to overview]Percentage of Participants With Improvement in Seizure Frequency in ITT Population
NCT01220180 (20) [back to overview]Number of Participants With PGIC Scale for NeP in PP Population
NCT01220180 (20) [back to overview]Number of Participants With PGIC Scale for Fibromyalgia in PP Population
NCT01220180 (20) [back to overview]Number of Participants With PGIC Scale for Fibromyalgia in ITT Population
NCT01220180 (20) [back to overview]Number of Participants With Patient's Global Impression of Change (PGIC) Scale for NeP in ITT Population
NCT01220180 (20) [back to overview]Number of Participants With Clinician's Global Impression of Change (CGIC) Scale for NeP in ITT Population
NCT01220180 (20) [back to overview]Number of Participants With CGIC Scale for NeP in PP Population
NCT01220180 (20) [back to overview]Percentage of Participants With Improvement in Seizure Frequency in PP Population
NCT01220180 (20) [back to overview]Number of Participants With CGIC Scale for Fibromyalgia in PP Population
NCT01220180 (20) [back to overview]Change From Baseline in Sleep Interference Score for NeP in ITT Population at Week 6
NCT01220180 (20) [back to overview]Change From Baseline in Sleep Interference Score for Fibromyalgia in PP Population at Week 6
NCT01220180 (20) [back to overview]Change From Baseline in Sleep Interference Score for Fibromyalgia in ITT Population at Week 6
NCT01220180 (20) [back to overview]Change From Baseline in Sleep Interference Score for NeP in PP Population at Week 6
NCT01220180 (20) [back to overview]Change From Baseline in Daily Pain Score for Fibromyalgia in ITT Population at Week 6
NCT01256593 (11) [back to overview]Patient's Impression (PGIC) at Week 13
NCT01256593 (11) [back to overview]Physician's Impression (CGIC) at Week 13
NCT01256593 (11) [back to overview]Number of Participants With Adverse Drug Reactions Related to Dizziness, Somnolence, Loss of Consciousness, Syncope, and Potential for Accidental Injury
NCT01256593 (11) [back to overview]Change From Baseline in Participant-rated Pain Score at Week 13
NCT01256593 (11) [back to overview]Change From Baseline in Participant-rated Sleep Interference Score at Week 13
NCT01256593 (11) [back to overview]Clinical Effectiveness Rate
NCT01256593 (11) [back to overview]Number of Participants With Adverse Drug Reactions Related to Peripheral Edema or Other Edema-related Events
NCT01256593 (11) [back to overview]Number of Participants With Adverse Drug Reactions Related to Vision-related Events
NCT01256593 (11) [back to overview]Percentage of Participants With Adverse Drug Reaction
NCT01256593 (11) [back to overview]Percentage of Participants With Serious Adverse Drug Reaction
NCT01256593 (11) [back to overview]The Percentage of Participants With Adverse Drug Reaction Unexpected From Japanese Package Insert
NCT01262677 (28) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale - Anxiety (HADS-A) Total Score at Week 14
NCT01262677 (28) [back to overview]Change From Baseline in MOS-SS - Sleep Adequacy Score at Week 14
NCT01262677 (28) [back to overview]Change From Baseline in MOS-SS - Sleep Problems Index I Score at Week 14
NCT01262677 (28) [back to overview]Change From Baseline in MOS-SS - Sleep Somnolence Score at Week 14
NCT01262677 (28) [back to overview]Change From Baseline in MOS-SS - Snoring Score at Week 14
NCT01262677 (28) [back to overview]Loge 28-day Seizure Rate for All Partial Onset Seizures During the Double-blind Maintenance Phase
NCT01262677 (28) [back to overview]Frequency of Secondary Generalized Tonic-clonic Seizures (SGTC) During the Double-blind Treatment Phase
NCT01262677 (28) [back to overview]Percentage of Participants With New or Intensified Physical Examination Findings During the Double-blind Treatment Phase
NCT01262677 (28) [back to overview]Percentage of Participants With Relevant ECG Interval-increases From Baseline During the Double-blind Treatment Phase
NCT01262677 (28) [back to overview]Percentage of Participants With Self-injurious or Suicidal Ideation or Behavior on Columbia Classification Algorithm of Suicide Assessment (C-CASA)
NCT01262677 (28) [back to overview]Log Transformed 28-day SGTC Rate for All SGTCs During the Double-blind Maintenance Phase
NCT01262677 (28) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale - Depression (HADS-D) Total Score at Week 14
NCT01262677 (28) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Disturbance Score at Week 14
NCT01262677 (28) [back to overview]Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Problems Index II Score at Week 14
NCT01262677 (28) [back to overview]Change From Baseline in MOS-SS - Awaken Short of Breath or With Headache Score at Week 14
NCT01262677 (28) [back to overview]Change From Baseline in MOS-SS - Quantity of Sleep (Hours) at Week 14
NCT01262677 (28) [back to overview]Percent of Participants Reporting Optimal Sleep on the MOS-SS - Optimal Sleep Subscale
NCT01262677 (28) [back to overview]Percentage Change From Baseline in 28-day Partial Seizure Rate During the Double-blind Treatment Phase
NCT01262677 (28) [back to overview]Percentage of Participants With ≥50% Reduction in 28-day SGTC Seizure Rate From Baseline During the Double-blind Treatment Phase
NCT01262677 (28) [back to overview]Benefit, Satisfaction, and Willingness to Continue Measure (BSW): Benefit From Treatment Question
NCT01262677 (28) [back to overview]BSW: Satisfaction From Treatment Question
NCT01262677 (28) [back to overview]BSW: Willingness to Continue Question
NCT01262677 (28) [back to overview]Log Transformed (Loge) 28-day Seizure Rate for All Partial Onset Seizures During the Double-blind Treatment Phase
NCT01262677 (28) [back to overview]Percentage of Participants With a ≥50% Reduction in the 28-day Partial Seizure Rate From Baseline During the Double-blind Treatment Phase
NCT01262677 (28) [back to overview]Percentage of Participants With a Relevant Increase in Sitting Blood Pressure (BP) From Baseline During the Double-blind Treatment Phase
NCT01262677 (28) [back to overview]Percentage of Participants With Corrected QT (QTc) Interval Greater Than or Equal to 450 ms
NCT01262677 (28) [back to overview]Percentage of Participants With Laboratory Test Abnormalities During the Study
NCT01262677 (28) [back to overview]Percentage of Participants With New or Intensified Neurological Examination Findings During the Double-blind Treatment Phase
NCT01270828 (17) [back to overview]Percentage of Participants With 30% Reduction in the Mean Pain Score.
NCT01270828 (17) [back to overview]Change in the Brief Pain Inventory (BPI-sf)
NCT01270828 (17) [back to overview]Change in Hospital Anxiety and Depression Scales (HADS)
NCT01270828 (17) [back to overview]Change From Baseline to Endpoint in Weekly Mean Pain Score.
NCT01270828 (17) [back to overview]Number of Participants With Loss of Therapeutic Response.
NCT01270828 (17) [back to overview]Percentage of Participants With 50% Reduction in the Mean Pain Score.
NCT01270828 (17) [back to overview]The MOS-SS-Optimal Sleep.
NCT01270828 (17) [back to overview]Percentage of Participants With Suicidal Behaviour/Ideation
NCT01270828 (17) [back to overview]Percentage of Participants With Change in the Patient Global Impression of Change (PGIC) Score
NCT01270828 (17) [back to overview]Percentage of Participants With Benefit From Treatment, Satisfaction With Treatment and Willingness to Continue Treatement (BSW)
NCT01270828 (17) [back to overview]Number of Participants With Adverse Events
NCT01270828 (17) [back to overview]Change in the Weekly NRS-Pain (1-Week Recall).
NCT01270828 (17) [back to overview]Change in the Short Form 36 Health Survey (SF-36)
NCT01270828 (17) [back to overview]Change in the MOS-SS-Quantity of Sleep.
NCT01270828 (17) [back to overview]Change in the Medical Outcomes Study-Sleep Scale (MOS-SS).
NCT01270828 (17) [back to overview]Participants With Secondary LTR Based on 5 Day Rolling Average Diary Results
NCT01270828 (17) [back to overview]Change in Mean Daily Sleep Interference Scores
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Total Sleep Time at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Wake After Sleep Onset and Subjective Latency to Sleep Onset at Double Blind Endpoint Visit
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Wake After Sleep Onset and Subjective Latency to Sleep Onset at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in FIQ Score at Week 19
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in HADS Score at Week 19
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Mean Daily Pain Score at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 19-Sleep Disturbance, Snoring, Awakening Short of Breath or With a Headache, Sleep Adequacy, Somnolence, Sleep Problems Index I and Sleep Problems Index II
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in MFI Score at Week 19
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in SF-36 Score at Week 19
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline WPAI Questionnaire at Week 19
NCT01271933 (57) [back to overview]Double-Blind Phase: Number of Participants Who Reported Global Impression of Change (PGIC) at Week 19
NCT01271933 (57) [back to overview]Double-Blind Phase: Number of Participants With Benefit, Satisfaction, and Willingness (BSW) to Continue Data at Visit 9 (3 Component Questions) at Week 19
NCT01271933 (57) [back to overview]Number of Participants With Suicidal Ideation Throughout the Study Assessed by Columbia Classification Algorithm of Suicide Assessment (C-CASA)
NCT01271933 (57) [back to overview]Number of Participants With Suicidal Ideation Throughout the Study Assessed by Columbia Classification Algorithm of Suicide Assessment (C-CASA)
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline at in Actigraphy Functional/Sleep Assessment - Sleep Fragmentation Index Weeks 3, 4, 5, 6 and 7
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in 36-Item Short-Form Health Survey (SF-36) at Week 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Minutes of Interrupted Sleep at Weeks 3, 4, 5, 6 and 7
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Percent Sedentary at Weeks 3, 4, 5, 6 and 7
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Daytime Activity at Weeks 3, 4, 5, 6 and 7
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Sleep Time at Weeks 3, 4, 5, 6 and 7
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Average Daily Tiredness Score at Weeks 1, 2, 3, 4, 5, 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Daily SSQ - Subjective Number of Awakenings After Sleep Onset at Weeks 1, 2, 3, 4, 5, 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Daily SSQ - Subjective Total Sleep Time at Weeks 1, 2, 3, 4, 5, 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Sleep Quality at Weeks 1, 2, 3, 4, 5, 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Wake After Sleep and Subjective Latency to Sleep Onset at Weeks 1, 2, 3, 4, 5, 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Week 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Hospital Anxiety and Depression Scale (HADS) at Week 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Mean Daily Pain Score at Weeks 1, 2, 3, 4, 5, 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Multidimensional Fatigue Inventory (MFI) at Week 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Work Productivity and Activity Impairment (WPAI) Questionnaire at Week 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Number of Participants Who Reported Global Impression of Change (PGIC) at Week 6
NCT01271933 (57) [back to overview]Single-Blind Phase: Number of Participants With Benefit, Satisfaction, Willingness to Continue Measure (BSW) at Week 6
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Minutes of Interrupted Sleep at Double Blind End Point Visit (Week 19)
NCT01271933 (57) [back to overview]Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 6- Quantity of Sleep
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Percent Sedentary at Double Blind End Point Visit (Week 19)
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Sleep Fragmentation Index at Double Blind End Point Visit (Week 19)
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Daytime Activity at Double Blind End Point Visit (Week 19)
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment- Total Sleep Time at Double Blind End Point Visit (Week 19)
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Average Daily Tiredness Score at Double Blind Endpoint Visit
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Sleep Quality at Double Blind Endpoint Visit
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Number of Awakenings After Sleep Onset at Double Blind Endpoint Visit
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Total Sleep Time at Double Blind Endpoint Visit
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Mean Daily Pain Score at Double Blind Endpoint Visit
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 19- Quantity of Sleep
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Weekly Pain Score at Week 19 (1 Week Recall Period)
NCT01271933 (57) [back to overview]Double-Blind Phase: Number of Participants With Loss of Therapeutic Response (LTR) Event
NCT01271933 (57) [back to overview]Double-Blind Phase: Time to Loss of Therapeutic Response (LTR)
NCT01271933 (57) [back to overview]Single-Blind Phase: Change From Baseline in Weekly Pain Score at Week 6 (1 Week Recall Period)
NCT01271933 (57) [back to overview]Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 6 - Sleep Disturbance, Snoring, Awakening Short of Breath or With a Headache, Sleep Adequacy, Somnolence, Sleep Problems Index I and Sleep Problems Index II
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Minutes of Interrupted Sleep at Weeks 11, 12, 13, 14 and 15
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Percent Sedentary at Weeks 11, 12, 13, 14 and 15
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Sleep Fragmentation Index at Weeks 11, 12, 13, 14 and 15
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Daytime Activity at Weeks 11, 12, 13, 14 and 15
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Sleep Time at Weeks 11, 12, 13, 14 and 15
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Average Daily Tiredness Score at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Sleep Quality at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
NCT01271933 (57) [back to overview]Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Number of Awakenings After Sleep Onset at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
NCT01279850 (11) [back to overview]Patient's Impression (PGIC) at Week 104
NCT01279850 (11) [back to overview]Physician's Impression (CGIC) at Week 104
NCT01279850 (11) [back to overview]Change From Baseline in Participant-rated Pain Score at Week 104
NCT01279850 (11) [back to overview]Change From Baseline in Participant-rated Sleep Interference Score at Week 104
NCT01279850 (11) [back to overview]Clinical Effectiveness Rate
NCT01279850 (11) [back to overview]Number of Participants With Adverse Drug Reactions Related to Vision-related Events
NCT01279850 (11) [back to overview]Percentage of Participants With Adverse Drug Reaction
NCT01279850 (11) [back to overview]Percentage of Participants With Serious Adverse Drug Reaction
NCT01279850 (11) [back to overview]Number of Participants With Adverse Drug Reactions Related to Dizziness, Somnolence, Loss of Consciousness, Syncope, and Potential for Accidental Injury
NCT01279850 (11) [back to overview]Percentage of Participants With Adverse Drug Reaction Unexpected From Japanese Package Insert
NCT01279850 (11) [back to overview]Number of Participants With Adverse Drug Reactions Related to Peripheral Edema or Other Edema-related Events
NCT01331213 (7) [back to overview]Colonic Compliance
NCT01331213 (7) [back to overview]Colonic Motility Index
NCT01331213 (7) [back to overview]Sensory Threshold for Pain
NCT01331213 (7) [back to overview]Postprandial Colonic Tone [Reported as the Symmetric Percent [Change} in Baseline Colonic Barostat Balloon Volume
NCT01331213 (7) [back to overview]Post-treatment Sensory Threshold for Gas
NCT01331213 (7) [back to overview]Fasting Colonic Tone
NCT01331213 (7) [back to overview]Overall Sensory Ratings in Response to 16, 24, 30 and 36 mm Hg Distensions.
NCT01332149 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Somnolence Score at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in Pain VAS From the SF-MPQ at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in PPI Scale From the SF-MPQ at Endpoint
NCT01332149 (25) [back to overview]Clinical Global Impression of Change (CGIC) at Endpoint
NCT01332149 (25) [back to overview]Patient Global Impression of Change (PGIC) Score at Endpoint
NCT01332149 (25) [back to overview]Percentage of 30 Percent (%) Responders at Endpoint
NCT01332149 (25) [back to overview]Percentage of Participants Who Had Optimal Sleep at Endpoint
NCT01332149 (25) [back to overview]Baseline Hospital Anxiety and Depression Scale (HADS) Scores
NCT01332149 (25) [back to overview]Baseline Pain Visual Analogue Scale (VAS) and Present Pain Intensity (PPI) Scale
NCT01332149 (25) [back to overview]Change From Baseline in Short Form McGill Pain Questionnaire (SF-MPQ) Score at Weeks 1, 5, and 9
NCT01332149 (25) [back to overview]Change From Baseline in Weekly Mean Pain Score at Weeks 1 to 9
NCT01332149 (25) [back to overview]Change From Baseline in Weekly Mean Sleep Interference Score at Weeks 1 to 9
NCT01332149 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Sleep Problems Index Score at Endpoint
NCT01332149 (25) [back to overview]Baseline Mean Pain Score
NCT01332149 (25) [back to overview]Baseline Mean Sleep Interference Score
NCT01332149 (25) [back to overview]Change From Baseline in HADS Anxiety Total Score at Endpoint
NCT01332149 (25) [back to overview]Baseline Medical Outcomes Study (MOS)-Sleep Scale Scores
NCT01332149 (25) [back to overview]Change From Baseline in HADS Depression Total Score at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in Mean Pain Score at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in Mean Sleep Interference Score at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Awaken Short of Breath Score at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Quantity of Sleep Score at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Sleep Adequacy Score at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Sleep Disturbance Score at Endpoint
NCT01332149 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Snoring Score at Endpoint
NCT01333956 (7) [back to overview]Neuropathic Pain
NCT01333956 (7) [back to overview]Opioid Usage
NCT01333956 (7) [back to overview]Satisfaction
NCT01333956 (7) [back to overview]Numeric Rating Scale (NRS)
NCT01333956 (7) [back to overview]Self-assessed Sedation and Confusion
NCT01333956 (7) [back to overview]Postoperative Pain
NCT01333956 (7) [back to overview]Opioid-Related Symptom Distress Score
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in the Overall Quality of Sleep
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in the Number of Awakenings
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in Short Form Health Survey (SF-12) Mental Health Composite Score (MCS)
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in painDETECT Final Assessment
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in Neuropathic Pain Symptom Inventory (NPSI) Sub-scores and Overall Score Assessment
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in Hospital Anxiety and Depression Scale - Depression in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in Hospital Anxiety and Depression Scale - Anxiety in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change EuroQol-5 Dimension (EQ-5D) Health Status Index
NCT01352741 (44) [back to overview]Double-blind Comparative Period Sleep Evaluation Questionnaire: Change in Latency
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Number of Awakenings
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Latency
NCT01352741 (44) [back to overview]End of Open-label Pick-up Period: Average Pain Intensity Score for the Overall Low Back Pain on an 11-point Numeric Rating Scale (NRS-3)
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in Worst Pain Intensity Over the Past 24 Hours
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Changes in the Short Form Health Survey (SF-12) Physical Health Composite Score (PCS)
NCT01352741 (44) [back to overview]Change in the Average Pain Intensity Score for the Overall Low Back Pain on an 11-point Numeric Rating Scale (NRS-3)
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Overall Quality of Sleep
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Overall Quality of Sleep in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Overall Quality of Sleep in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Overall Quality of Sleep in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: Subject's Satisfaction With Treatment
NCT01352741 (44) [back to overview]Open-label Titration Period: Worst Mean Pain Intensity Scores Over the Past 24 Hours
NCT01352741 (44) [back to overview]Open-label Continuation Period: Average Pain Intensity Score for the Overall Low Back Pain on an 11-point Numeric Rating Scale (NRS-3)
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Subject's Satisfaction With Treatment
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Clinician Global Impression of Change (CGIC)
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Change in NRS-3 Pain Intensity Score for the Radiating Pain
NCT01352741 (44) [back to overview]Open-label Titration Period: Average Pain Intensity Score for the Overall Low Back Pain on an 11-point Numeric Rating Scale (NRS-3)
NCT01352741 (44) [back to overview]Open-label Titration Period: painDETECT Assessments
NCT01352741 (44) [back to overview]Open-label Titration Period: Neuropathic Pain Symptom Inventory (NPSI) Overall Score Assessment in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Sleep Evaluation Questionnaire - Change in the Number of Hours Slept
NCT01352741 (44) [back to overview]Double-blind Comparative Period: Patient Global Impression of Change (PGIC)
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Time Slept
NCT01352741 (44) [back to overview]Open-label Titration Period: Neuropathic Pain Symptom Inventory (NPSI) Overall Score Assessment
NCT01352741 (44) [back to overview]Open-label Titration Period: Hospital Anxiety and Depression Scale - Depression in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: Comparative Double-blind Period Population painDETECT Assessment
NCT01352741 (44) [back to overview]Open-label Titration Period: Hospital Anxiety and Depression Scale - Anxiety in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: EuroQol-5 Dimension (EQ-5D) Health Status Index Score for the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: Comparative Double-blind Period Population Worst Mean Pain Intensity Scores Over the Past 24 Hours
NCT01352741 (44) [back to overview]Open-label Titration Period: Comparative Double-blind Period Population Short Form Health Survey (SF-12) Physical Health Composite Score (PCS)
NCT01352741 (44) [back to overview]Open-label Titration Period: Comparative Double-blind Period Population Short Form Health Survey (SF-12) Mental Health Composite Score (MCS)
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Latency in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: Radiating Mean Pain Intensity Score for the Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: Radiating Pain
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation - Number of Awakenings in the Double-blind Comparative Period Population
NCT01352741 (44) [back to overview]Open-label Titration Period: Sleep Evaluation Questionnaire - Number of Hours Slept in the Double-blind Comparative Period Population
NCT01364298 (9) [back to overview]Sleep Evaluation: Number of Participants Who Fell Asleep in Pre-specified Time Duration
NCT01364298 (9) [back to overview]Percentage of Participants With at Least 30 and 50 Percent (%) Improvement in Numeric Pain Intensity Scale (NPIS) From Baseline at Day 84 (Week 12)
NCT01364298 (9) [back to overview]Number of Participants With Various Health Conditions Based on Global Impression of Patient Change (GIPC) Scale
NCT01364298 (9) [back to overview]Number of Participants With Various Health Conditions Based on Clinical Global Impression of Change (CGIC) Scale
NCT01364298 (9) [back to overview]Change From Baseline in Visual Analogue Scale (VAS) Score at Day 84
NCT01364298 (9) [back to overview]Change From Baseline in Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) Scale Score at Day 84
NCT01364298 (9) [back to overview]Number of Participants With Adverse Events (AEs)
NCT01364298 (9) [back to overview]Change From Baseline in Average Numeric Pain Intensity Scale (NPIS) Score at Day 84
NCT01364298 (9) [back to overview]Profile of Mood States (POMS) Score
NCT01366196 (5) [back to overview]Patient Controlled Analgesia (PCA) Hydromorphone Usage
NCT01366196 (5) [back to overview]Oral Analgesic Supplementation Use
NCT01366196 (5) [back to overview]Numerical Pain Rating Scale Score With Physical Therapy on Postoperative Day 1
NCT01366196 (5) [back to overview]Numerical Pain Rating Scale Score on Postoperative Day 1 at Rest
NCT01366196 (5) [back to overview]Numerical Pain Rating Scale Score on Day of Surgery
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Medical Outcome Study (MOS)-Sleep Scale - Sleep Disturbance Subscale Score
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Medical Outcome Study (MOS)-Sleep Scale - Sleep Problems Index Overall Score
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Short-Form 36 (SF-36) Health Survey - Mental Component Summary Score
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Short-Form 36 (SF-36) Health Survey - Physical Component Summary Score
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Sleep Quality
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Subjective Latency to Sleep Onset (sLSO)
NCT01387607 (24) [back to overview]Change From Baseline in Pain Visual Analog Scale (Pain VAS) Score at Week 14
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Subjective Total Sleep Time (sTST)
NCT01387607 (24) [back to overview]Percentage of Participants Categorized by Each Patient Global Impression of Change (PGIC) Score at Week 14
NCT01387607 (24) [back to overview]Change From Baseline in Multidimensional Assessment of Fatigue (MAF) Score at Week 14
NCT01387607 (24) [back to overview]Change From Baseline in Endpoint Mean Pain Score During the Double-blind Treatment Period at Week 14
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Subjective Wake After Sleep Onset (sWASO)
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Subjective Number of Awakenings After Sleep Onset (sNAASO)
NCT01387607 (24) [back to overview]Change From Baseline in Mean Sleep Interference Score at Week 14
NCT01387607 (24) [back to overview]Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) Total Score at Week 14
NCT01387607 (24) [back to overview]Number of Treatment-Emergent Adverse Events (TEAEs) Categorized by Severity
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Hospital Anxiety and Depression Scale (HADS) - Anxiety Subscale Score
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Hospital Anxiety and Depression Scale (HADS) - Depression Subscale Score
NCT01387607 (24) [back to overview]Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs) and Discontinuation Due to AEs
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Medical Outcome Study (MOS)-Sleep Scale - Snoring, Awaken Short of Breath and Sleep Adequacy Subscale Scores
NCT01387607 (24) [back to overview]Change From Baseline at Week 14 in Medical Outcome Study (MOS)-Sleep Scale - Quantity of Sleep and Somnolence Subscale Scores
NCT01387607 (24) [back to overview]Percentage of Participants With Optimal Sleep at Week 14 in Medical Outcome Study (MOS)-Sleep Scale
NCT01387607 (24) [back to overview]Percentage of Participants With at Least 50% Reduction in Weekly Mean Pain Score From Baseline to Week 14
NCT01387607 (24) [back to overview]Percentage of Participants With at Least 30% Reduction in Weekly Mean Pain Score From Baseline to Week 14
NCT01389596 (18) [back to overview]Child Behaviour Checklist (CBCL): Total Problem Subscale Score in Participants Less Than 6 Years of Age
NCT01389596 (18) [back to overview]Child Behaviour Checklist (CBCL): Internalizing Subscale Score in Participants Less Than 6 Years of Age
NCT01389596 (18) [back to overview]Change From Baseline in Cognitive Test Battery (CogState Battery) Scores at Week 12: Detection Task
NCT01389596 (18) [back to overview]Change From Baseline in Cognitive Test Battery (CogState Battery) Score at Week 12: Paediatric Identification (Go-No Go: Attention) Tasks
NCT01389596 (18) [back to overview]Percentage of Participants With at Least 50 Percent (%) or Greater Reduction From Baseline in 28-day Seizure Rate During the 12 Week Treatment Phase
NCT01389596 (18) [back to overview]Number of Participants With Clinically Significant Laboratory Abnormalities
NCT01389596 (18) [back to overview]Number of Participants With Clinically Significant Change From Baseline in Neurological Examinations
NCT01389596 (18) [back to overview]Log-Transformed 28-Day Seizure Rate For All Partial Onset Seizures During 12-Week Treatment Phase
NCT01389596 (18) [back to overview]Log-Transformed 28-Day Seizure Rate For All Partial Onset Seizures During Baseline Phase
NCT01389596 (18) [back to overview]Number of Participants With Vital Signs Abnormalities
NCT01389596 (18) [back to overview]Number of Participants With Clinically Significant Change From Baseline in Physical Examinations at Week 13
NCT01389596 (18) [back to overview]Number of Participants With Treatment Emergent Treatment-Related Adverse Events (AEs) and Serious Adverse Events (SAEs)
NCT01389596 (18) [back to overview]Number of Participants With Electrocardiogram (ECG) Abnormalities
NCT01389596 (18) [back to overview]Number of Participants (6-16 Years of Age) With Positive Response to Columbia Suicide-Severity Rating Scale (C-SSRS) According to the Columbia Classification Algorithm of Suicide Assessment (C-CASA) Categories During Post Baseline Time Period
NCT01389596 (18) [back to overview]Number of Participants (6-16 Years of Age) With Positive Response to Columbia Suicide-Severity Rating Scale (C-SSRS) According to the Columbia Classification Algorithm of Suicide Assessment (C-CASA) Categories At Baseline
NCT01389596 (18) [back to overview]Number of Adverse Events by Severity
NCT01389596 (18) [back to overview]Child Behaviour Checklist (CBCL): Withdrawn Subscale Score in Participants Less Than 6 Years of Age
NCT01389596 (18) [back to overview]Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
NCT01391858 (8) [back to overview]Pain Scores
NCT01391858 (8) [back to overview]Pain Scores
NCT01391858 (8) [back to overview]Pain Scores
NCT01391858 (8) [back to overview]The Postoperative Opioid Requirement After Mastectomy
NCT01391858 (8) [back to overview]Pain Scores
NCT01391858 (8) [back to overview]Pain Scores
NCT01391858 (8) [back to overview]Oral Opioids Consumption
NCT01391858 (8) [back to overview]Pain Scores
NCT01432236 (22) [back to overview]Patient Global Impression of Change (PGIC) at the End of Period 1.
NCT01432236 (22) [back to overview]Percentage of Participants With >=30% and >=50% Pain Reduction Based on Daily Pain Diary.
NCT01432236 (22) [back to overview]PGIC at the End of Period 2.
NCT01432236 (22) [back to overview]Work Productivity and Activity Index-Specific Health Problem (WPAI-SHP) Questionnaire at Baseline.
NCT01432236 (22) [back to overview]Number of Participants With Categorical Scores on the Columbia Suicide Severity Rating Scale (C-SSRS) at Baseline.
NCT01432236 (22) [back to overview]EQ-5D Score at End of Period.
NCT01432236 (22) [back to overview]Health Utilization Assessment (Time for Help no Payment) at Baseline.
NCT01432236 (22) [back to overview]Mean EuroQoL 5-Dimensions (EQ-5D) Score at Baseline.
NCT01432236 (22) [back to overview]Mean NRS Pain Score at End of Period.
NCT01432236 (22) [back to overview]Mean Patient Static Global Assessment (PSGA) Score at Baseline.
NCT01432236 (22) [back to overview]Mean PSGA Score at End of Period.
NCT01432236 (22) [back to overview]Subjective Sleep Questionnaire - Mean Latency to Sleep Onset at End of Period.
NCT01432236 (22) [back to overview]Subjective Sleep Questionnaire - Mean Sleep Quality at End of Period.
NCT01432236 (22) [back to overview]Subjective Sleep Questionnaire - Mean Subjective Total Sleep Time at End of Period.
NCT01432236 (22) [back to overview]Subjective Sleep Questionnaire - Mean Subjective Wake After Sleep Onset at End of Period.
NCT01432236 (22) [back to overview]Subjective Sleep Questionnaire - Parameter Estimates for Subjective Number of Awakenings Per Night After Sleep Onset at End of Period.
NCT01432236 (22) [back to overview]Fibromyalgia Impact Questionnaire (FIQ) Score at Baseline.
NCT01432236 (22) [back to overview]FIQ Score at End of Period.
NCT01432236 (22) [back to overview]HADS at End of Period.
NCT01432236 (22) [back to overview]Health Utilization Assessment (Total Office Visits, Number of Hospitalizations and Number of Emergency Room Visits) at Baseline.
NCT01432236 (22) [back to overview]Hospital Anxiety and Depression Scale (HADS) at Baseline.
NCT01432236 (22) [back to overview]Number of Participants With Categorical Scores on the C-SSRS at Post-Baseline.
NCT01455415 (23) [back to overview]EQ-5D Usual Activities Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Euro QoL-5 Dimensions (EQ-5D) Mobility Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]HADS-D Total Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Hospital Anxiety and Depression Scale - Anxiety (HADS-A) Total Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Norfolk QOL-DN Activities of Daily Living Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Norfolk Quality of Life-Diabetic Neuropathy (Norfolk QOL-DN) Total Quality of Life (TQOL) Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Norfolk QOL-DN Symptoms Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Norfolk QOL-DN Small Fiber Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Norfolk QOL-DN Physical Functioning / Large Fiber Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Mean Sleep Interference Rating Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Average Diabetic Peripheral Neuropathy (DPN) Pain Based on a Numeric Rating Scale (NRS) Over the Last 7 Days of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]BPI-sf Score for Pain-Interference Domain at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Brief Pain Inventory-Short Form (BPI-sf) Score for Pain-Severity Domain at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]EQ-5D Anxiety / Depression Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]EQ-5D Dolan 1997 Index Summary Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]EQ-5D Dolan 2002 Index Summary Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Norfolk QOL-DN Autonomic Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]EQ-5D Pain / Discomfort Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]PGIC Score at the End of Period 1 (Week 6) - Categorized Scores
NCT01455415 (23) [back to overview]Patient Global Impression of Change (PGIC) Score at the End of Period 1 (Week 6) - Original Scores
NCT01455415 (23) [back to overview]Percentage of Participants Achieving 50% Reduction in Mean DPN Pain Score From Baseline at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]Percentage of Participants Achieving 30% Reduction in Mean DPN Pain Score From Baseline at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455415 (23) [back to overview]EQ-5D Self-Care Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01455428 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Snoring Score at Endpoint
NCT01455428 (25) [back to overview]Percentage of Participants Who Had Optimal Sleep at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Sleep Problems Index Score at Endpoint
NCT01455428 (25) [back to overview]Percentage of 30 Percent (%) Responders at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in Mean Pain Score at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Sleep Disturbance Score at Endpoint
NCT01455428 (25) [back to overview]Baseline Mean Pain Score
NCT01455428 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Sleep Adequacy Score at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Awaken Short of Breath Score at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in Mean Sleep Interference Score at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in HADS Depression Total Score at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in HADS Anxiety Total Score at Endpoint
NCT01455428 (25) [back to overview]Patient Global Impression of Change (PGIC) Score at Endpoint
NCT01455428 (25) [back to overview]Clinical Global Impression of Change (CGIC) Score at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Somnolence Score at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in Pain VAS From the SF-MPQ at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in PPI Scale From the SF-MPQ at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in Weekly Mean Sleep Interference Scores at Weeks 1 to 8
NCT01455428 (25) [back to overview]Baseline Mean Sleep Interference Score
NCT01455428 (25) [back to overview]Change From Baseline in MOS-Sleep Scale, Quantity of Sleep Score at Endpoint
NCT01455428 (25) [back to overview]Change From Baseline in Weekly Mean Pain Score at Weeks 1 to 8
NCT01455428 (25) [back to overview]Change From Baseline in Short Form McGill Pain Questionnaire (SF-MPQ) Score at Weeks 1, 3, 5, and 8
NCT01455428 (25) [back to overview]Baseline Pain Visual Analogue Scale (VAS) and Present Pain Intensity (PPI) Scale
NCT01455428 (25) [back to overview]Baseline Medical Outcomes Study (MOS)-Sleep Scale Scores
NCT01455428 (25) [back to overview]Baseline Hospital Anxiety and Depression Scale (HADS) Scores
NCT01463306 (30) [back to overview]Number of Participants With Suicidal Ideation as Per Columbia Suicide Severity Rating Scale (C-SSRS) Mapped to Columbia Classification Algorithm of Suicide Assessment (C-CASA)
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 9
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 9
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Week 1
NCT01463306 (30) [back to overview]Absolute Values for Body Height at Baseline
NCT01463306 (30) [back to overview]Absolute Values for Body Height at Baseline
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 4
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Week 1
NCT01463306 (30) [back to overview]Absolute Values for Body Height at Month 12
NCT01463306 (30) [back to overview]Absolute Values for Body Height at Month 12
NCT01463306 (30) [back to overview]Number of Participants With Tanner Staging Evaluation at Month 12
NCT01463306 (30) [back to overview]Number of Participants With Tanner Staging Evaluation at Baseline
NCT01463306 (30) [back to overview]Number of Participants With Treatment Emergent Adverse Events (AEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Related AEs and Treatment Related SAEs
NCT01463306 (30) [back to overview]Number of Participants With Suicidal Behavior as Per Columbia Suicide Severity Rating Scale (C-SSRS) Mapped to Columbia Classification Algorithm of Suicide Assessment (C-CASA)
NCT01463306 (30) [back to overview]Number of Participants With Maximum Change From Baseline up to 12 Months in 12-Lead Electrocardiogram (ECG) Parameters
NCT01463306 (30) [back to overview]Number of Participants With Clinically Significant Change From Baseline in Physical and Neurological Examination Findings up to 12 Months
NCT01463306 (30) [back to overview]Number of Participants With >=7 Percent (%) Change From Baseline in Body Weight up to 12 Months
NCT01463306 (30) [back to overview]Number of Participants Meeting Pre-defined Criteria for Vital Signs Abnormalities
NCT01463306 (30) [back to overview]Number of Participants as Per Reliable Change Index Category for Cogstate Pediatric Identification Task
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 1
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 1
NCT01463306 (30) [back to overview]Number of Participants With Incidence of Laboratory Abnormalities
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 2
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 12/Early Termination
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 2
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 4
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 12/Early Termination
NCT01463306 (30) [back to overview]Number of Participants as Per Reliable Change Index (RCI) Category for Cogstate Detection Task
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 6
NCT01463306 (30) [back to overview]28-Days Seizure Rate at Month 6
NCT01474772 (22) [back to overview]Mean Sleep Interference Rating Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Hospital Anxiety and Depression Scale - Depression (HADS-D) Total Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Hospital Anxiety and Depression Scale - Anxiety (HADS-A) Total Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]DPN Pain on Walking Based on a 11-point NRS of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Daytime Total Activity Counts Per Day Measured by Actigraphy Over the Last 7 Days of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]BPI-sf Score for Pain-Interference With Walking Ability at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]BPI-sf Score for Pain-Interference Domain at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Average Diabetic Peripheral Neuropathy (DPN) Pain Based on a Numeric Rating Scale (NRS) Over the Last 7 Days of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Brief Pain Inventory-Short Form (BPI-sf) Score for Pain-Severity Domain at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Percentage of Participants With Patient Global Impression of Change (PGIC) Score From Baseline at the End of Period 1 (Week 6)
NCT01474772 (22) [back to overview]Norfolk QOL-DN Autonomic Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Walk 12 Questionnaire Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Steps Per Day Measured by Actigraphy Over the Last 7 Days of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Norfolk Quality of Life-Diabetic Neuropathy (Norfolk QOL-DN) Total Quality of Life (TQOL) Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Norfolk QOL-DN Symptoms Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Norfolk QOL-DN Activities of Daily Living Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Norfolk QOL-DN Small Fiber Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Average Weekly DPN Pain Based on a NRS (Baseline, 6 Weeks in Period 1, 2 Weeks Washout and 6 Weeks in Period 2)
NCT01474772 (22) [back to overview]Percentage of Participants Achieving 50% Reduction in Mean DPN Pain Score From Baseline at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Percentage of Participants Achieving 30% Reduction in Mean DPN Pain Score From Baseline at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Euro QoL-5 Dimensions (EQ-5D) - Health State Profile Utility Scores at the End of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01474772 (22) [back to overview]Norfolk QOL-DN Physical Functioning / Large Fiber Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)
NCT01485094 (10) [back to overview]Difference in Patient's Global Impression of Change
NCT01485094 (10) [back to overview]The Difference Between Baseline and End-of-double-blind Treatment Scores for Dynamic Mechanical Allodynia and Mechanical Pain Sensitivity Compared to Placebo
NCT01485094 (10) [back to overview]Assessment of Responder Rates
NCT01485094 (10) [back to overview]Difference Between Baseline and End-of-double-blind Treatment Ongoing Pain Intensity Scores
NCT01485094 (10) [back to overview]The Difference Between Baseline and End-of-double-blind Treatment Brush-evoked Pain Intensity Scores
NCT01485094 (10) [back to overview]Change in Area of Static Allodynia and Dynamic Allodynia From Baseline
NCT01485094 (10) [back to overview]Change in Neuropathic Pain Symptom Inventory Scores on Day 7 From Baseline (Day -1)
NCT01485094 (10) [back to overview]Change in painDETECT Grading From Baseline (Day -1) to End of Double-blind Treatment (Day 7)
NCT01485094 (10) [back to overview]Daily Current Pain Intensity
NCT01485094 (10) [back to overview]Difference in Leeds Sleep Evaluation Questionnaire After 7 Days of Treatment
NCT01496365 (13) [back to overview]Drug-related Treatment-Emergent Adverse Events (n ≥2 Participants in Any Treatment Group) Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Least Square Means of Average Daily Pain Score by Week Mixed Effects Model for Repeated Measures (MMRM) Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Mean Change From Baseline to Week 5 in Average Daily Pain Score (ADPS) Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Patient Global Impression of Change at End-of-Treatment or Early Termination Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Average Daily Pain Score Responder Rates Based on ≥30% and ≥50% Decrease From Baseline at Endpoint) Following Treatment With DS-5565 or Placebo Compared to Pregabalin
NCT01496365 (13) [back to overview]Short-Form McGill Pain Questionnaire (SF-MPQ) Total Score and Visual Analog Scale Change From Baseline to Endpoint Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Short-Form McGill Pain Questionnaire (SF-MPQ) Sensory and Affective Scores Change From Baseline to Endpoint Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Mean Change From Baseline to Endpoint of Modified BPI Subscales, Worst, Least and Average Pain Intensity, Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Mean Change From Baseline to End-of-Treatment in Average Daily Sleep Interference Score Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Mean Change From Baseline to Endpoint of Modified BPI Subscale, Pain Right Now, Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Mean Change From Baseline to Endpoint of Modified BPI Subscale, Relief From Pain, Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Mean Change From Baseline to Endpoint of Modified Brief Pain Inventory (BPI) Subscale, Interference With Daily Functions, Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01496365 (13) [back to overview]Short-Form McGill Pain Questionnaire (SF-MPQ) Present Pain Intensity Change From Baseline to Endpoint Following Treatment With DS-5565 Compared to Pregabalin and Placebo
NCT01504412 (2) [back to overview]Mean Change in Average Daily Pain Score From Baseline Among Participants Who Received DS5565 for Pain Associated With Diabetic Peripheral Neuropathy
NCT01504412 (2) [back to overview]Mean Change in Short Form-McGill Pain Questionnaire From Baseline Among Participants Who Received DS5565 for Pain Associated With Diabetic Peripheral Neuropathy
NCT01511640 (1) [back to overview]Number of Self-administered Puffs of Smoked Cannabis Containing Active THC Concentrations Compared to Placebo Under Controlled Laboratory Conditions
NCT01524796 (10) [back to overview]Change From Baseline In Least Pain Level At Month 3 Telephonic Interview
NCT01524796 (10) [back to overview]Change From Baseline In Average Pain Level At Month 3 Telephonic Interview
NCT01524796 (10) [back to overview]Sleep Interference Scale Score
NCT01524796 (10) [back to overview]Pregabalin Dose
NCT01524796 (10) [back to overview]Number of Participants With Categorical Scores On Patient Global Impression of Change (PGI-C)
NCT01524796 (10) [back to overview]Number of Participants Using Other Pharmacological Pain Treatments For Peripheral Neuropathic Pain Before Baseline, Month 1, 2, 3 Visit
NCT01524796 (10) [back to overview]Work Productivity and Activity Impairment (WPAI) Questionnaire
NCT01524796 (10) [back to overview]Number of Participants Using Other Pharmacological Pain Treatments For Peripheral Neuropathic Pain After Baseline Visit (Concomitant Medication)
NCT01524796 (10) [back to overview]Health-related Quality of Life Scale Score
NCT01524796 (10) [back to overview]Change From Baseline In Worst Pain Level At Month 3 Telephonic Interview
NCT01637077 (11) [back to overview]The Worst Pain Reported at the End of the Week for the Overall Week (Item 2 Appendix V)
NCT01637077 (11) [back to overview]The Percentage of Patients Taking Opioid Medications
NCT01637077 (11) [back to overview]Area Under the Curve Per Assessment (aAUCpa) of Worst, Average and Least Pain (Items 1-3 Appendix IV) for the First Cycle of Treatment.
NCT01637077 (11) [back to overview]Maximum of the Average Pain Scores (Item 3, Appendix IV) Over the Period From Treatment Initiation to Day 7 (for Cycle 1).
NCT01637077 (11) [back to overview]Percentage of Participants With Grade 3 or Higher Adverse Events Considered At Least Possibly Related to Treatment
NCT01637077 (11) [back to overview]The Percentage of Patients Who Report the Development of New Aches/Pains That They Attribute to Paclitaxel
NCT01637077 (11) [back to overview]The Percentage of Patients Who Report, at Week's End, Using Non-prescription Pain Medications
NCT01637077 (11) [back to overview]The Percentage of Patients Who Report, at Week's End, Using Opioids
NCT01637077 (11) [back to overview]The Percentage of Patients Who Use Non-prescription Pain Medications
NCT01637077 (11) [back to overview]Worst of the Pain Scores for the Week Following the First Cycle of Paclitaxel Administration, Paclitaxel-associated Acute Pain Syndrome (P-APS) Pain Score
NCT01637077 (11) [back to overview]Area Under the Curve (AUC) of EORTC Sensory, Autonomic, and Motor Neuropathy Subscales
NCT01701362 (12) [back to overview]Change From Baseline to Endpoint in Quality of Life Using EuroQol (EQ-5D) Health State Profile Scores
NCT01701362 (12) [back to overview]Mean Change From Baseline in the Medical Outcomes Study Sleep Scale (MOS-SS) - Sub-domain Score.
NCT01701362 (12) [back to overview]Change From Baseline in Pain Interference Index (BPI-sf)
NCT01701362 (12) [back to overview]Patient Global Impression of Change (PGIC) at Week 15
NCT01701362 (12) [back to overview]Percentage of Participants in MOS-SS With Optimal Sleep Status.
NCT01701362 (12) [back to overview]Percentage of Responders to Treatment With Pregabalin Measured as Reduction in Mean Pain Score of ≥30%.
NCT01701362 (12) [back to overview]Percentage of Responders to Treatment With Pregabalin Measured as Reduction in Mean Pain Score of ≥50%
NCT01701362 (12) [back to overview]Change From Baseline in Pain Severity Index (Brief Pain Inventory-short Form [BPI-sf])
NCT01701362 (12) [back to overview]Change From Baseline to Week 15 in Weekly Mean Pain Score
NCT01701362 (12) [back to overview]Baseline Mean Pain Score
NCT01701362 (12) [back to overview]Baseline Scores in the Medical Outcomes Study Sleep Scale (MOS-SS) - Sub-domain Score.
NCT01701362 (12) [back to overview]Change From Baseline in Overall Weekly Mean Sleep Interference Score (SIRS)
NCT01727791 (27) [back to overview]Amount Recovered in Urine During the Dosing Interval Tau (Aetauurine)
NCT01727791 (27) [back to overview]Time to Reach Maximum Observed Breast Milk Concentration (Tmax [Breast Milk])
NCT01727791 (27) [back to overview]Terminal Half-Life for Breast Milk (t1/2 [Breast Milk])
NCT01727791 (27) [back to overview]Renal Clearance (CLr)
NCT01727791 (27) [back to overview]Plasma Half-Life (t1/2)
NCT01727791 (27) [back to overview]Percentage of Dose Excreted in Breast Milk During the Dosing Interval Tau (Aetaubm Percent)
NCT01727791 (27) [back to overview]Number of Participants With Treatment-Emergent Adverse Events (AEs) or Serious Adverse Events (SAEs)
NCT01727791 (27) [back to overview]Time to Reach Maximum Observed Plasma Concentration (Tmax)
NCT01727791 (27) [back to overview]Milk to Plasma Ratio for AUCtau (MPAUCtau)
NCT01727791 (27) [back to overview]Percent of Dose Recovered in Urine During the Dosing Interval Tau (Aetauurine Percent)
NCT01727791 (27) [back to overview]Number of Participants With Laboratory Abnormalities
NCT01727791 (27) [back to overview]Milk to Plasma Ratio for Maximum Observed Concentration (MPCmax)
NCT01727791 (27) [back to overview]Number of Participants With Clinically Significant Change From Baseline in Vital Signs
NCT01727791 (27) [back to overview]Minimum Observed Plasma Trough Concentration (Cmin)
NCT01727791 (27) [back to overview]Maximum Observed Plasma Concentration (Cmax)
NCT01727791 (27) [back to overview]Maximum Observed Concentration in Breast Milk (Cmax [Breast Milk])
NCT01727791 (27) [back to overview]Infant Dose Expressed as Percentage of Body Weight Normalized Maternal Dose (BWNIDPCM)
NCT01727791 (27) [back to overview]Daily Amount of Pregabalin Excreted in Breast Milk (Ae24bm)
NCT01727791 (27) [back to overview]Breast Milk Clearance (CLbm)
NCT01727791 (27) [back to overview]Body Weight Normalized Maternal Dose (BWNMD)
NCT01727791 (27) [back to overview]Body Weight Normalized Infant Dose (BWNID)
NCT01727791 (27) [back to overview]Average Plasma Concentration During the Dosing Interval (Cav)
NCT01727791 (27) [back to overview]Average Breast Milk Concentration During the Dosing Interval (Cav)
NCT01727791 (27) [back to overview]Area Under the Curve From Time Zero to End of Dosing Interval for Breast Milk (AUCtau [Breast Milk])
NCT01727791 (27) [back to overview]Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau)
NCT01727791 (27) [back to overview]Apparent Oral Clearance (CL/F)
NCT01727791 (27) [back to overview]Amount Excreted in Breast Milk Over the Dosing Interval Tau (Aetaubm)
NCT01747915 (2) [back to overview]Log-transformed (Log) 28-day Seizure Rate for All Primary Generalized Tonic-Clonic (PGTC) Seizures During 12-Week Double-Blind Treatment Phase
NCT01747915 (2) [back to overview]Percentage of Participants With at Least 50 Percent (%) or Greater Reduction From Baseline in 28-day Primary Generalized Tonic-clonic (PGTC) Seizure Rate During the 12-Week Double-blind Treatment Phase
NCT01773993 (14) [back to overview]Number of Participants With Adverse Drug Reactions Related to Peripheral Edema or Other Edema-related Events
NCT01773993 (14) [back to overview]Number of Participants With Adverse Drug Reactions Related to Vision-related Events
NCT01773993 (14) [back to overview]Percentage of Participants With Adverse Drug Reaction
NCT01773993 (14) [back to overview]Percentage of Participants With Adverse Drug Reaction Unexpected From Japanese Package Insert
NCT01773993 (14) [back to overview]Percentage of Participants With Serious Adverse Drug Reaction
NCT01773993 (14) [back to overview]Patient's Impression (PGIC) at Week 52
NCT01773993 (14) [back to overview]Change From Baseline in the Japanese Version of the Revised Fibromyalgia Impact Questionnaire (JFIQR) at 52 Weeks
NCT01773993 (14) [back to overview]Change From Baseline in Quality of Sleep Score at Week 52
NCT01773993 (14) [back to overview]Number of Participants With Adverse Drug Reactions Related to Dizziness, Somnolence, Loss of Consciousness, Syncope, and Potential for Accidental Injury
NCT01773993 (14) [back to overview]Change From Baseline in Fibromyalgia Activity Score (FAS-31) at 52 Weeks
NCT01773993 (14) [back to overview]Change From Baseline in Health Status of EuroQol 5 Dimension (EQ-5D) at 52 Weeks
NCT01773993 (14) [back to overview]Change From Baseline in Pain Score at Week 52
NCT01773993 (14) [back to overview]Change From Baseline in Patient Health Questionnaire (PHQ-9) Score at Week 52
NCT01773993 (14) [back to overview]Physician's Impression (CGIC) at Week 52
NCT01801189 (2) [back to overview]Length of Stay
NCT01801189 (2) [back to overview]Post-operative Pain Medication Requirements
NCT01838044 (14) [back to overview]Percentage of Participants With PGIC for Each Arm Compared at Week 5 (Visit 4) and at Week 10 (Visit 6)
NCT01838044 (14) [back to overview]Change in the Weekly Mean Pain NRS Score in Arm B, Compared Between Week 5 (Visit 4) and Week 10 (Visit 6).
NCT01838044 (14) [back to overview]Change From Baseline in the Weekly Mean Pain Numeric Rating Scale (NRS) Score at Week 5 (ie, Visit 4) Compared Between the Two Study Arms
NCT01838044 (14) [back to overview]Change From Baseline in the Weekly Mean Pain NRS Score at Week 10 (Visit 6) Compared Between the Two Study Arms
NCT01838044 (14) [back to overview]Patient Global Impression of Change (PGIC) Compared Between Arms at Week 5 (Visit 4) and at Week 10 (Visit 6)
NCT01838044 (14) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale (HADS-A) Anxiety Scores at Week 5 (Visit 4) and Week 10 (Visit 6)
NCT01838044 (14) [back to overview]Change From Baseline in Brief Pain Inventory Short Form (BPI sf) - Pain Severity Index Score at Week 5 and Week 10
NCT01838044 (14) [back to overview]Change From Baseline in Benefit, Satisfaction, and Willingness to Continue Measure Scores Compared Between Arms at Week 5 (Visit 4) and at Week 10 (Visit 6)
NCT01838044 (14) [back to overview]Percentage of Participants With >= 50% Reduction From Baseline in the Weekly Mean Pain NRS Score at Week 5 and Week 10
NCT01838044 (14) [back to overview]Percentage of Days in Mild, Moderate and Severe Pain at Period 1 and Period 2
NCT01838044 (14) [back to overview]Change From Baseline in Weekly Mean of Daily Sleep Interference Rating Scale (SIRS) Compared Between Arms at Week 5 (Visit 4) and at Week 10 (Visit 6)
NCT01838044 (14) [back to overview]Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Sleep Disturbance Subscale at Week 5 and Week 10
NCT01838044 (14) [back to overview]Change From Baseline in Hospital Anxiety and Depression Scale (HADS-D) Depression Scores at Week 5 (Visit 4) and Week 10 (Visit 6)
NCT01838044 (14) [back to overview]Percentage of Participants With >= 30% Reduction From Baseline in the Weekly Mean Pain NRS Score at Week 5 and Week 10
NCT01928381 (2) [back to overview]Brief Pain Index - Item 5, Average Daily Pain Score (Range 0-10) Higher Values Indicate Worse Pain
NCT01928381 (2) [back to overview]Brief Pain Index - Item 5, Average Daily Pain Score (Range 0-10) Higher Score Indicates Worse Pain - Per Protocol
NCT01939366 (1) [back to overview]Change in Average Pain Intensity.
NCT02037165 (9) [back to overview]Weighted Needle (Pain) Threshold (WNT) in the Secondary Flare Area of Capsaicin-irritated Skin
NCT02037165 (9) [back to overview]"Single Peripheral N2-component Amplitudes - Measured in Capsaicin-irritated Skin Type"
NCT02037165 (9) [back to overview]"Single Central P2-component Amplitudes - Measured in UVB-irradiated Skin Type"
NCT02037165 (9) [back to overview]"Single Central P2-component Amplitudes - Measured in Capsaicin-irritated Skin Type"
NCT02037165 (9) [back to overview]"Electronic Visual Analogue Scale (VAS) (100mm VAS Post Laser Pain Scales) - Measured in the UVB-irradiated Skin Type"
NCT02037165 (9) [back to overview]"Electronic Visual Analogue Scale (100mm VAS Post Laser Pain Scales) - Measured in the Capsaicin-irritated Skin Type."
NCT02037165 (9) [back to overview]"Single Peripheral N2-component Amplitudes - Measured in UVB-irradiated Skin Type"
NCT02037165 (9) [back to overview]Overall Peak-to-Peak (PtP) N2/P2-component Amplitude of (LEP) in Capsaicin-irritated Skin
NCT02037165 (9) [back to overview]Overall Peak-to-Peak(PtP) N2/P2-component Amplitude of Laser (Somatosensory/Radiant Heat) Evoked Potentials (LEP) in Ultraviolet B (UVB) -Irradiated Skin
NCT02072824 (10) [back to overview]Percentage of Participants With Abnormal Neurological Examination Findings at Baseline and End of Study
NCT02072824 (10) [back to overview]Percentage of Participants With Abnormal Physical Examination Findings at Screening and End of Study
NCT02072824 (10) [back to overview]Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
NCT02072824 (10) [back to overview]Log Transformed 24-Hour Seizure Rate for All Partial Onset Seizures During the Double-Blind Treatment Phase
NCT02072824 (10) [back to overview]Number of Participants With Electrocardiogram (ECG) Abnormalities
NCT02072824 (10) [back to overview]Number of Participants With Laboratory Test Abnormalities
NCT02072824 (10) [back to overview]Responder Rate: Percentage of Participants With at Least 50 Percent (%) or Greater Reduction From Baseline in 24-Hour Seizure Rate for All Partial Onset Seizures During the Double-Blind Treatment Phase
NCT02072824 (10) [back to overview]Number of Adverse Events by Severity
NCT02072824 (10) [back to overview]Number of Participants With Treatment-Related Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
NCT02072824 (10) [back to overview]Number of Participants With Vital Signs Abnormalities
NCT02146430 (12) [back to overview]Change From Baseline to Week 13 in EuroQol Five Dimensions Questionnaire (EQ-5D) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]"Number of Participants Who Answered Much Improved or Better in Patient Global Impression of Change (PGIC) at Week 13 in Participants Receiving DS-5565, Pregabalin, or Placebo"
NCT02146430 (12) [back to overview]Change From Baseline to Week 13 in Average Daily Sleep Interference in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]Change From Baseline to Week 13 in Multidimensional Fatigue Inventory (MFI-20) General Fatigue Score in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]Change From Baseline in Weekly Average Daily Pain Score (ADPS) at Week 13 in Participants Receiving DS-5565, Pregabalin, Placebo
NCT02146430 (12) [back to overview]Change in Fibromyalgia Index Questionnaire (FIQ) Total Score From Baseline to Week 13 in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]Number of Participants Reporting Optimal Sleep at Week 13 on the Medical Outcomes Study (MOS) Sleep Scale In Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]Proportion of Days a Rescue Medication Was Used Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]Change From Baseline to Week 13 in Hospital Anxiety and Depression Scale (HADS) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]Change From Baseline to Week 13 in Short Form 36 (SF-36) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]Change From Baseline to Week 13 in the Brief Pain Inventory Short Form (BPI-SF) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02146430 (12) [back to overview]Number of Responders at Week 13 Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]The Number of Participants Reporting Optimal Sleep at Week 13 on the Medical Outcomes Study (MOS) Sleep Scale in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Change From Baseline to Week 13 in Hospital Anxiety and Depression Scale (HADS) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Change From Baseline to Week 13 in the Brief Pain Inventory Short Form (BPI-SF) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Number of Responders at Week 13 Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Change From Baseline to Week 13 in Short Form 36 (SF-36) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Change From Baseline to Week 13 in Average Daily Pain Score (ADPS) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]"Number of Participants Who Answered Much Improved or Better on the Patient Global Impression of Change (PGIC) Scale at Week 13 in Participants Receiving DS-5565, Pregabalin, or Placebo"
NCT02187159 (12) [back to overview]Change From Baseline to Week 13 in Average Daily Sleep Interference Score (ADSIS) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Change From Baseline to Week 13 in EuroQol Five Dimensions Questionnaire (EQ-5D) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Change From Baseline to Week 13 in Fibromyalgia Index Questionnaire (FIQ) Total Score in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Change From Baseline to Week 13 in Multidimensional Fatigue Inventory (MFI-20) General Fatigue Score in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187159 (12) [back to overview]Proportion of Days a Rescue Medication Was Used in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Change From Baseline to Week 13 in EuroQol Five Dimensions Questionnaire (EQ-5D) Measure Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Change From Baseline to Week 13 in Average Score on the Fibromyalgia Index Questionnaire (FIQ) in Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Change From Baseline to Week 13 in Average Daily Sleep Interference Score (ADSIS) Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]"Number of Participants Who Answered Much Improved or Better in Patient Global Impression of Change at Week 13 Receiving DS-5565, Pregabalin, or Placebo"
NCT02187471 (12) [back to overview]Change From Baseline to Week 13 in Hospital Anxiety and Depression Scale (HADS) Measure Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Change From Baseline to Week 13 in Average Daily Pain Score (ADPS) Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Number of Participants Classified As Responders at Week 13 Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Change From Baseline to Week 13 in Short Form 36 (SF-36) Measure Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Change From Baseline at Week 13 in the Brief Pain Inventory Short Form (BPI-SF) Measure Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Proportion of Days a Rescue Medication Was Used Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Number of Participants Reporting Optimal Sleep at Week 13 on the Medical Outcomes Study (MOS) Sleep Scale Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02187471 (12) [back to overview]Change From Baseline to Week 13 in Multidimensional Fatigue Inventory (MFI-20) General Fatigue Score Among Participants Receiving DS-5565, Pregabalin, or Placebo
NCT02215252 (18) [back to overview]Fasted Total Cholesterol Values
NCT02215252 (18) [back to overview]Number of Days Participants Take Rescue Medication
NCT02215252 (18) [back to overview]Number of Participants With Laboratory Test Values of Potential Clinical Importance
NCT02215252 (18) [back to overview]Daily Pain Numeric Rating Scale (NRS)
NCT02215252 (18) [back to overview]Daily Sleep Interference Scale Score (DSIS).
NCT02215252 (18) [back to overview]Total Amount of Rescue Medication Per Week
NCT02215252 (18) [back to overview]Fasted Low Density Lipoprotein (LDL) Cholesterol
NCT02215252 (18) [back to overview]Neuropathic Pain Symptom Inventory (NPSI) - Paroxysmal Pain
NCT02215252 (18) [back to overview]Neuropathic Pain Symptom Inventory (NPSI) - Paresthesia/Dysethesia
NCT02215252 (18) [back to overview]Neuropathic Pain Symptom Inventory (NPSI) - Pressing (Deep) Spontaneous Pain
NCT02215252 (18) [back to overview]Neuropathic Pain Symptom Inventory (NPSI) - Evoked Pain
NCT02215252 (18) [back to overview]Responder Rate Based on a 50% Improvement in Mean Pain Response Using the Daily Pain NRS Score
NCT02215252 (18) [back to overview]Neuropathic Pain Symptom Inventory (NPSI) - Burning (Superficial) Spontaneous Pain
NCT02215252 (18) [back to overview]Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and Withdrawals Due to Adverse Events (AEs)
NCT02215252 (18) [back to overview]Responder Rate Based on a 30% Improvement in Mean Pain Response Using the Daily Pain NRS Score
NCT02215252 (18) [back to overview]Plasma Concentration of PF-05089771
NCT02215252 (18) [back to overview]Patient's Global Impression of Change Score (PGIC).
NCT02215252 (18) [back to overview]Neuropathic Pain Symptom Inventory (NPSI) - Total Score
NCT02260388 (4) [back to overview]PROMIS Fatigue Short Form v1.0 8a
NCT02260388 (4) [back to overview]PROMIS Pain Interference Short Form v1.0 8a T Score
NCT02260388 (4) [back to overview]SF12 Health Composite Scores
NCT02260388 (4) [back to overview]PROMIS Sleep Disturbance Short Form v1.0 8a
NCT02277548 (1) [back to overview]Average/Cumulative Opioid Dose
NCT02285010 (4) [back to overview]Numbers of Participants With Adverse Events as a Measure of Safety and Tolerability
NCT02285010 (4) [back to overview]Pain Scores on the Visual Analog Scale
NCT02285010 (4) [back to overview]Time to First Analgesia
NCT02285010 (4) [back to overview]Post Operative Morphine Consumption
NCT02394951 (7) [back to overview]Change in NPSI Outcomes
NCT02394951 (7) [back to overview]Change in BPI Outcomes (SEVERITY)
NCT02394951 (7) [back to overview]Change in BPI Outcomes (INTERFERENCE)
NCT02394951 (7) [back to overview]Absolute Change in Pain Intensity, Measured on 0-10 Numerical Rating Scale (NRS)
NCT02394951 (7) [back to overview]Change in Spontaneous Pain Intensity as a Function of Baseline MPT
NCT02394951 (7) [back to overview]Number of Patients With Significant Pain Reduction
NCT02394951 (7) [back to overview]Change in Sleep Problem Index (SPI) Outcomes
NCT02417935 (10) [back to overview]Change From Baseline to 12 Weeks in the Weekly Mean of the 24-Hour Average Pain Score on the 11-Point Numeric Rating Scale (NRS)
NCT02417935 (10) [back to overview]Change From Baseline to 12 Weeks in the Weekly Mean of the 24-Hour Worst Pain Scores on the 11-Point NRS
NCT02417935 (10) [back to overview]Change From Baseline to 12 Weeks on the Beck Depression Inventory-II (BDI-II) Total Score
NCT02417935 (10) [back to overview]Change From Baseline to 12 Weeks on the EuroQol 5 Dimension (EQ-5D)
NCT02417935 (10) [back to overview]Clinical Global Impression of Improvement (CGI-I) at 12 Weeks
NCT02417935 (10) [back to overview]Change From Baseline to 12 Weeks in the Weekly Mean of Night Pain Scores on the 11-Point NRS
NCT02417935 (10) [back to overview]Number of Participants With a 30% and 50% Reduction in the Weekly Mean of the 24-Hour Average Pain Score on the 11-Point NRS at 12 Weeks
NCT02417935 (10) [back to overview]Change From Baseline to 12 Weeks on the Neuropathic Pain Symptom Inventory (NPSI)
NCT02417935 (10) [back to overview]Change From Baseline to 12 Weeks on the Brief Pain Inventory-Severity and Interference Rating Short Form (BPI-SF)
NCT02417935 (10) [back to overview]Patient Global Impression of Improvement (PGI-I) at 12 Weeks
NCT02607254 (4) [back to overview]Visual Analogue Score for Pain Intensity.
NCT02607254 (4) [back to overview]Sleep Quality as Assessed by Daily Sleep Interference Rating Scale (SIRS);
NCT02607254 (4) [back to overview]Patient Global Impression of Change (PGIC);
NCT02607254 (4) [back to overview]Brief Pain Inventory (BPI sf);
NCT02701764 (8) [back to overview]Tear Evaporation Measured by Tear Break up Time (TBUT)
NCT02701764 (8) [back to overview]Eye Pain as Assessed by the Short Form - McGill Pain Questionnaire (Sf-MPQ) Sensory
NCT02701764 (8) [back to overview]Eye Pain as Assessed by the Numeric Rating Scale (NRS)
NCT02701764 (8) [back to overview]Eye Pain as Assessed by the Short Form - McGill Pain Questionnaire (Sf-MPQ) Affective
NCT02701764 (8) [back to overview]Severity of Dry Eye Symptoms as Assessed by the Dry Eye Questionnaire - 5 (DEQ5)
NCT02701764 (8) [back to overview]Dry Eye Symptoms as Evaluated by the Ocular Surface Disease Index (OSDI)
NCT02701764 (8) [back to overview]Eye Pain as Evaluated by the Neuropathic Pain Symptom Inventory - Eye (NPSI-E)
NCT02701764 (8) [back to overview]Tear Production Measured by Schirmers Score
NCT02782169 (4) [back to overview]Number of Ibuprofen 800mg Tablets Used
NCT02782169 (4) [back to overview]Maximum Pain Score Over Study Period
NCT02782169 (4) [back to overview]Number of Participants Ever Experiencing Different Symptoms During Abortion
NCT02782169 (4) [back to overview]Number of Oxycodone/Acetominophen Tablets (5/325mg) Used
NCT03179345 (12) [back to overview]Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - Detection Task (DET)
NCT03179345 (12) [back to overview]Change From Baseline Between Gralise® and Lyrica® in the Driving Simulator - Standard Deviation of Vehicle Speed (SDVS).
NCT03179345 (12) [back to overview]Change From Baseline Between Gralise® and Neurontin® in the Driving Simulator - Standard Deviation of Vehicle Speed (SDVS).
NCT03179345 (12) [back to overview]"Change From Baseline in the Standard Deviation of the Lateral Position (SDLP) Measured on the Driving Simulator Between Gralise® and Neurontin®"
NCT03179345 (12) [back to overview]"Change From Baseline in the Standard Deviation of the Lateral Position (SDLP) Measured on the Driving Simulator Between Gralise® and Lyrica®"
NCT03179345 (12) [back to overview]To Compare the Relative Safety and Tolerability of Gralise®, Neurontin®, and Lyrica®.
NCT03179345 (12) [back to overview]Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Sedation Evaluation - Portland Neurotoxicity Scale (PNS).
NCT03179345 (12) [back to overview]Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Sedation Evaluation - Karolinska Sleepiness Scale (KSS).
NCT03179345 (12) [back to overview]Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - One Card Learning (OCLT).
NCT03179345 (12) [back to overview]Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - International Shopping List Test (ISL)
NCT03179345 (12) [back to overview]Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - Identification Task (IDN).
NCT03179345 (12) [back to overview]Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - Groton Maze Learning Test (GMLT).
NCT03256253 (1) [back to overview]Maximum Dose of Pregabalin:
NCT03407430 (8) [back to overview]Proportion of Patients Who Have an Increase in Pain Score of ≥ 3 From Baseline Between Pregabalin and Placebo Across the 2 Cycles
NCT03407430 (8) [back to overview]Number of Patients Who Have an Increase in Pain Score of ≥ 3 From Baseline Through the End of Study Medication in Cycle 1
NCT03407430 (8) [back to overview]Number of Days of Breakthrough Analgesic Use Between Pregabalin and Placebo Across the 2 Cycles
NCT03407430 (8) [back to overview]Proportion of Patients With Severe Pain Between Pregabalin and Placebo Across the 2 Cycles
NCT03407430 (8) [back to overview]Proportion of Patients Who Have an Increase in Bone/Joint Pain Score of ≥ 3 From Baseline Through the End of Study Medication in Cycle 1
NCT03407430 (8) [back to overview]Maximum Change in Pain Score From Baseline Between Pregabalin and Placebo Across the 2 Cycles
NCT03407430 (8) [back to overview]Maximum Neuropathic Pain Score Between Pregabalin and Placebo Across the 2 Cycles
NCT03407430 (8) [back to overview]Number of Subjects That Experienced a Grade 2 or Higher Adverse Events When Taking Pregabalin
NCT03472469 (10) [back to overview]Pain as Assessed by Score on the Behavioral Pain Scale (BPS)
NCT03472469 (10) [back to overview]Pain as Assessed by Score on the Numeric Rating Scale (NRS)
NCT03472469 (10) [back to overview]Pharmacy Costs
NCT03472469 (10) [back to overview]Number of Intensive Care Unti (ICU) Days
NCT03472469 (10) [back to overview]Number of Participants With Any Opioid-related Complications
NCT03472469 (10) [back to overview]Number of Hospital Days
NCT03472469 (10) [back to overview]Number of Participants Discharged From the Hospital With an Opioid Prescription
NCT03472469 (10) [back to overview]Number of Ventilator Days
NCT03472469 (10) [back to overview]Opioid Use Per Day
NCT03472469 (10) [back to overview]Overall Costs
NCT03652818 (5) [back to overview]Cumulative Number of Participants With Onset of First Perceptible Relief (FPR) Confirmed at 24 Hours After Dose 2
NCT03652818 (5) [back to overview]Number of Participants With Differing Patient Global Evaluation Scores
NCT03652818 (5) [back to overview]Cumulative Number of Participants With Onset of Meaning Pain Relief (MPR) Confirmed at 24 Hours After Dose 2
NCT03652818 (5) [back to overview]Sum Pain Intensity Difference Scores
NCT03652818 (5) [back to overview]Total Pain Relief Measure
NCT03669081 (6) [back to overview]Cumulative Narcotic Use
NCT03669081 (6) [back to overview]30 Day Mortality
NCT03669081 (6) [back to overview]Serum Creatinine Levels at One Year Post-operatively
NCT03669081 (6) [back to overview]Length of Hospital Stay
NCT03669081 (6) [back to overview]Number of Patients With Urinary Retention
NCT03669081 (6) [back to overview]Bleeding Risk
NCT03927781 (9) [back to overview]Early Post-op Stent Related Symptoms
NCT03927781 (9) [back to overview]Number of Participants Who Were Administered the Study Drug Correctly
NCT03927781 (9) [back to overview]Number of Participants With One or More Adverse Events Related to Study Drug
NCT03927781 (9) [back to overview]Opioid Use
NCT03927781 (9) [back to overview]Patient Satisfaction
NCT03927781 (9) [back to overview]Unplanned Healthcare Contacts
NCT03927781 (9) [back to overview]Early Post-op Opioid Needs
NCT03927781 (9) [back to overview]Amount of Opioid Use
NCT03927781 (9) [back to overview]Respondent Reported Usability of Instruments
NCT04495283 (13) [back to overview]Summed Pain Intensity (SPI) Assessed by Numeric Rating Scale From Hour 0 to Hour 12 (SPI0-12), Hour 12 to Hour 24 (SPI12-24), and Hour 24 to Hour 48 (SPI24-48).
NCT04495283 (13) [back to overview]Summed Pain Intensity (SPI) Assessed by Numeric Rating Scale Over Time
NCT04495283 (13) [back to overview]Total Consumption of Opioid Rescue Medication Through 24 Hours and 48 Hours
NCT04495283 (13) [back to overview]Time to First Use of Rescue Medication From Hour 0
NCT04495283 (13) [back to overview]Total Consumption of Rescue Medication
NCT04495283 (13) [back to overview]Summed Pain Intensity (SPI) Compared Between Group A and Group B
NCT04495283 (13) [back to overview]Summed Pain Intensity (SPI) Between Group A and Group C
NCT04495283 (13) [back to overview]Percentage of Participants Who Used Rescue Medication
NCT04495283 (13) [back to overview]Minimum Observed Concentration for PGB and APAP
NCT04495283 (13) [back to overview]Maximum Observed Concentration for PGB and APAP
NCT04495283 (13) [back to overview]Maximum Observed Concentration for PGB and APAP
NCT04495283 (13) [back to overview]Percentage of Participants Who Were Opioid Free Over Time
NCT04495283 (13) [back to overview]Number of Participants With Treatment-Related Adverse Events (TRAE)
NCT04495374 (6) [back to overview]Number of Doses of Opioids Used as Analgesic Rescue in the Postoperative Period
NCT04495374 (6) [back to overview]Time Required for the Use of the First Dose of Opioid as an Analgesic Rescue in the Postoperative Period
NCT04495374 (6) [back to overview]Postoperative Pain in Rest Assessed 24 Hours After Abdominal Hysterectomy Surgery Using the Visual Analog Scale (VAS)
NCT04495374 (6) [back to overview]Number of Participants With Dizziness Between the Intervention and Control Groups
NCT04495374 (6) [back to overview]Postoperative Pain in Active Movement Assessed 24 Hours After Abdominal Hysterectomy Surgery Using the Visual Analog Scale (VAS)
NCT04495374 (6) [back to overview]Postoperative Pain Assessed 24 Hours After Abdominal Hysterectomy Surgery, Using the McGill Pain Questionnaire
NCT04766996 (2) [back to overview]Total Post-operative Opioid Requirements With Non-opioid Drug Regimen
NCT04766996 (2) [back to overview]Nebraska Interprofessional Education Attitude Scale (NIPEAS) Score for Professional Staff Arm
NCT04987372 (2) [back to overview]Postoperative Pain After Cardiac Surgery
NCT04987372 (2) [back to overview](ICDSC)Delirium After Stop Sedation by Using Intensive Care Delirium Screening Checklist
NCT05053126 (5) [back to overview]"Unipolar VAS for High - Maximum Effect (Emax)"
NCT05053126 (5) [back to overview]"Unipolar VAS for Any Drug Effect"
NCT05053126 (5) [back to overview]"Bipolar Visual Analog Scale (VAS) for Drug Liking Maximum Effect (Emax)."
NCT05053126 (5) [back to overview]"Bipolar VAS for Take Drug Again"
NCT05053126 (5) [back to overview]"Bipolar VAS for Overall Drug Liking"

Medical Outcome Study (MOS) Awaken Short of Breath or Headache

MOS Sleep Scale is a subject-rated questionnaire consisting of 12 items that assess the key constructs of sleep; assesses sleep for the 4 weeks prior to evaluation. The MOS Awaken Short of Breath or with a Headache sub-scale scores range from 0 to 100, lower scores indicate less difficulty. (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin6.90
Placebo9.98

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Daily Pain Rating Scale (DPRS)- Number of 30% Responders (With Respect to Pain Scores)

DPRS consists of an 11-point rating scale ranging from 0 (no pain) to 10 (worst possible pain). A 30% responder at endpoint is a subject who has a 30% or more reduction in mean pain score at endpoint compared to baseline (NCT00141219)
Timeframe: Endpoint- Week 8 or Early Discontinuation

,
Interventionparticipants (Number)
YesNo
Placebo2750
Pregabalin6893

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Hospital Anxiety and Depression Scale- Anxiety (HADS-A) Score

HADS-A consists of 7 items that are assessed by a score of 0 = no anxiety to 3 = severe feeling of anxiety. The anxiety subscale determines a state of generalized anxiety (including anxious mood, restlessness, anxious thoughts, panic attacks). Score range = 0 to 21; higher scores indicate a greater intensity of anxiety (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin6.01
Placebo6.86

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Patient Global Impression of Change (PGIC)

PGIC is a subject-rated instrument that measured change in subject's overall status on a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). Improved = minimally improved, much improved, and very much improved; Worse = minimally worse, much worse, and very much worse. (NCT00141219)
Timeframe: Week 8

,
Interventionparticipants (Number)
ImprovedNo changeWorse
Placebo54129
Pregabalin1182911

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Medical Outcome Study (MOS) Optimal Sleep: Number of Participants With Optimal Sleep

MOS Sleep Scale is a subject-rated questionnaire consisting of 12 items that assess the key constructs of sleep; assesses sleep for the 4 weeks prior to evaluation. The MOS Optimal Sleep sub-scale score is a binary outcome derived from Sleep Quantity (SQ): the response is YES (or 1) if SQ = 7 or 8 hours per night. (NCT00141219)
Timeframe: Week 8

,
Interventionparticipants (Number)
NoYes
Placebo4431
Pregabalin8573

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Mean Sleep Score as Computed by DSIS.

DSIS consists of an 11-point rating scale ranging from 0 = pain did not interfere with sleep to 10 = pain completely interfered with sleep. Overall Comparison= 8-week average. (NCT00141219)
Timeframe: Weeks 1 to 8

,
Interventionscore on scale (Least Squares Mean)
Overall Comparison (Weeks 1 to 8)Week 1 (n= 161, 77)Week 2 (n=156, 75)Week 3 (n=154, 72)Week 4 (n=151, 68)Week 5 (n=146, 66)Week 6 (n=145, 65)Week 7 (n=142, 62)Week 8 (n=138, 62)
Placebo3.974.564.244.133.953.733.743.713.72
Pregabalin3.464.183.743.553.413.293.223.193.10

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Daily Pain Rating Scale (DPRS)- Weekly Mean Pain Score

DPRS is 11-point rating scale (0=no pain to 10=worst possible pain). Subjects instructed to describe pain (upon awakening) during preceding 24 hrs by choosing appropriate number between 0-10. Mean endpoint pain score obtained from last 7 available DPRS scores of daily pain diary while subject on study medication. Overall Comparison=8-week average. (NCT00141219)
Timeframe: Weeks 1 to 8

,
Interventionscore on scale (Least Squares Mean)
Overall Comparison (weeks 1 to 8)Week 1 (n=161, 77)Week 2 (n=156, 75)Week 3 (n=154, 72)Week 4 (n=151, 68)Week 5 (n=146, 66)Week 6 (n=145, 65)Week 7 (n=142, 62)Week 8 (n=138, 62)
Placebo5.296.185.615.425.275.114.934.874.92
Pregabalin4.915.805.305.024.844.694.644.524.47

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Duration Adjusted Average Change (DAAC) of (Unadjusted) Mean Pain Score

DAAC is a score used to assess treatment effects averaged over the entire length of the study. DAAC from baseline to weekly mean pain score was derived by calculating the mean of all post-baseline scores minus baseline mean pain score, and then weighing this according to the proportion of the planned study duration the subject actually completed. (NCT00141219)
Timeframe: Weeks 1 to 8

Interventionscore on scale (Mean)
Pregabalin-1.24
Placebo-0.87

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Euro Quality of Life (EQ-5D) Visual Analog Scale (VAS)

EQ-5D is a subject-completed questionnaire to assess health-related QOL (Health State Profile (HSP) & Visual Analog Scale (VAS)). The VAS is designed to rate the subject's current health state on a scale from 0 to 100 where 0 represents the worst imaginable health state and 100 represents the best imaginable health state. (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin61.53
Placebo58.03

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Euro Quality of Life (QOL) (EQ-5D) Utility Score

EQ-5D, a subject-completed questionnaire, assesses health-related QOL. QOL Health State Profile (HSP) is designed to record subject's level of current health across 5 domains (mobility, self-care, usual activities, pain/discomfort & anxiety/depression); scores are used to calculate EQ-5D Utility Score; range: -0.594 to 1.000 (from worst to best). (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin0.651
Placebo0.626

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Hospital Anxiety and Depression Scale- Depression (HADS-D) Score

"HADS-D consists of 7 items that are assessed by a score of 0 = no depression to 3 = severe feeling of depression. The depression subscale focuses on the state of lost interest and diminished pleasure response (lowering of hedonic tone). Score range = 0 to 21; higher scores indicate a greater intensity of depression" (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin7.54
Placebo7.73

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Medical Outcome Study (MOS) Overall Sleep Problems Index

MOS Sleep Scale is a subject-rated questionnaire consisting of 12 items that assess the key constructs of sleep; assesses sleep for the 4 weeks prior to evaluation. The MOS Overall Sleep Problems Index is a 9-item sub-scale; scores range from 0 to 100, lower scores indicate fewer sleep problems. (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin32.27
Placebo34.40

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Medical Outcome Study (MOS) Sleep Adequacy

MOS Sleep Scale is a subject-rated questionnaire consisting of 12 items that assess the key constructs of sleep; assesses sleep for the 4 weeks prior to evaluation. The MOS Sleep Adequacy sub-scale scores range from 0 to 100, higher scores indicate greater sleep adequacy. (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin48.81
Placebo46.65

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Duration Adjusted Average Change (DAAC) of (Adjusted) Mean Pain Score

DAAC is a score used to assess treatment effects averaged over the entire length of the study. DAAC from baseline to weekly mean pain score was derived by calculating the mean of all post-baseline scores minus baseline mean pain score, and then weighing this according to the proportion of the planned study duration the subject actually completed. (NCT00141219)
Timeframe: Weeks 1 to 8

Interventionscore on scale (Least Squares Mean)
Pregabalin-1.27
Placebo-0.89

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Daily Pain Rating Scale (DPRS)- Mean Pain Scores (Evaluable Population)

DPRS is 11-point rating scale from 0 (no pain) to 10 (worst possible pain). Subjects instructed to describe their pain (daily upon awakening) during preceding 24 hrs by choosing the appropriate number between 0-10. Mean endpoint pain score was obtained from the last 7 available DPRS scores of the daily pain diary while subject on study medication. (NCT00141219)
Timeframe: Endpoint- Week 8 or Early Discontinuation

Interventionscore on scale (Least Squares Mean)
Pregabalin4.47
Placebo4.94

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Daily Pain Rating Scale (DPRS)- Mean Pain Score (ITT Population)

DPRS is 11-point rating scale from 0 (no pain) to 10 (worst possible pain). Subjects instructed to describe their pain (daily upon awakening) during preceding 24 hrs by choosing the appropriate number between 0-10. Mean endpoint pain score was obtained from the last 7 available DPRS scores of the daily pain diary while subject on study medication. (NCT00141219)
Timeframe: Endpoint- Week 8 or Early Discontinuation

Interventionscore on scale (Least Squares Mean)
Pregabalin4.63
Placebo5.13

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Medical Outcome Study (MOS) Sleep Disturbance

MOS Sleep Scale is a subject-rated questionnaire consisting of 12 items that assess the key constructs of sleep; assesses sleep for the 4 weeks prior to evaluation. The MOS Sleep Disturbance sub-scale scores range from 0 to 100, lower scores indicate less disturbance. (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin28.96
Placebo34.58

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Daily Pain Rating Scale (DPRS)- Number of 50% Responders (With Respect to Pain Scores)

DPRS consists of an 11-point rating scale ranging from 0 (no pain) to 10 (worst possible pain). A 50% responder at endpoint is a subject who has a 50% or more reduction in mean pain score at endpoint compared to baseline. (NCT00141219)
Timeframe: Endpoint- Week 8 or Early Discontination

,
Interventionparticipants (Number)
YesNo
Placebo1166
Pregabalin42119

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Medical Outcome Study (MOS) Sleep Quantity

MOS Sleep Scale is a subject-rated questionnaire consisting of 12 items that assess the key constructs of sleep; assesses sleep for the 4 weeks prior to evaluation. The MOS Sleep Quantity sub-scale scores range from 0 to 24 (number of hours slept). (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin6.46
Placebo6.02

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Medical Outcome Study (MOS) Snoring Score

MOS Sleep Scale is a subject-rated questionnaire consisting of 12 items that assess the key constructs of sleep; assesses sleep for the 4 weeks prior to evaluation. The MOS Snoring sub-scale scores range from 0 to 100, lower scores indicate less snoring. (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin34.21
Placebo29.16

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Mean Sleep Interference Score Based on Daily Sleep Interference Scale (DSIS).

DSIS consists of an 11-point rating scale (0 = pain did not interfere with sleep to 10 = completely interfered with sleep). Higher score indicating greater level of sleep disturbance. (NCT00141219)
Timeframe: Endpoint- Week 8 or Early Discontinuation

Interventionscore on scale (Least Squares Mean)
Pregabalin3.26
Placebo3.91

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Medical Outcome Study (MOS) Somnolence

MOS Sleep Scale is a subject-rated questionnaire consisting of 12 items that assess the key constructs of sleep; assesses sleep for the 4 weeks prior to evaluation. The MOS Somnolence sub-scale scores range from 0 to 100, lower scores indicate less somnolence. (NCT00141219)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin34.02
Placebo29.31

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Clinical Global Impression of Change (CGIC)

CGIC is a clinician-rated instrument that assesses the subject's overall global improvement on a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). Improved = minimally improved, much improved, and very much improved; Worse = minimally worse, much worse, and very much worse. (NCT00141219)
Timeframe: Week 8

,
Interventionparticipants (Number)
ImprovedNo changeWorse
Placebo511610
Pregabalin117376

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Change in Euro Quality of Life (EQ-5D) Health State Profile and Visual Analog Scale Components

two components to the EQ-5D: a Health State Profile (scores from five domains are used to calculate the utility score :0 refers to dead and a score of 1 refers to perfect health) and a Visual Analogue Scale (VAS) (0 represents the worst imaginable health state and 100 represents the best imaginable health state) (NCT00219544)
Timeframe: Week 9

,
Interventionscore on scale (Least Squares Mean)
Health State ProfileVisual Analog Scale
Placebo-0.07-2.09
Pregabalin-0.01-0.03

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Change in Hospital Anxiety and Depression Scale Responses

Mean Change from Randomization in Score from Hospital Anxiety and Depression Scale (HADS): 2 subscales, measuring anxiety (HADS-A)and depression (HADS-D). 7 items in each subscale assessed on a scale of 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). which yields the score ranging 0-21. (NCT00219544)
Timeframe: Week 9

,
Interventionscore on scale (Least Squares Mean)
HADS-AHADS-D
Placebo1.20.8
Pregabalin-0.1-0.4

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Change in Modified Brief Pain Inventory (mBPI) for Pain Interference or Pain Severity.

Mean Change from Randomization: score at mBPI observation minus score at randomization. mBPI is extent to which pain interferes with daily activities on a 0 (no interference) to 10 (completely interfered) scale. (NCT00219544)
Timeframe: Week 9

,
Interventionscore on scale (Least Squares Mean)
Pain interferencePain severity
Placebo0.921.06
Pregabalin0.160.29

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Change in Pain Scores During Double Blind Treatment Phase

"Change in Mean Pain score = Mean of last 7 available pain scores from daily pain diary while on single-blind treatment. A Daily Pain Rating Score : 11-point numerical scale ranging from 0 (no pain) to 10 (worst possible pain)." (NCT00219544)
Timeframe: 9 weeks

,
Interventionscore on scale (Least Squares Mean)
Change from randomization to Week 5 (n=70, 64)Change from randomization to Week 6 (n=66, 63)Change from randomization to Week 7 (n=60, 56)Change from randomization to Week 8 (n=63,53)Change from randomization to Week 9 (n=67,58)
Placebo0.711.050.870.830.84
Pregabalin-0.010.08-0.06-0.100.14

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Change in Pain Treatment Satisfaction Scale (PTSS)

"Mean Change: score from observation minus score from randomization: PTSS Impact module of 8-items & Satisfaction module of 6-items; item scores 1-5.~Mean score for each module transformed onto scale 0- 100, where score 0 =worst possible response and score 100~=best possible response: Score =[(5 - mean non-missing items)*100]/4." (NCT00219544)
Timeframe: Week 9

,
Interventionscore on scale (Least Squares Mean)
impact of current pain medicationsatisfaction with current pain medication
Placebo-7.95-8.35
Pregabalin-1.96-1.86

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Change in Sleep Interference Scores During Double Blind Treatment Phase

"Change in Mean SI score: Mean SI score at observation minus mean SI score at week 4. Mean SI Score = mean of last 7 available SI scores from daily SI diary while on single-blind treatment. Daily SI rating scale (DSIS) is 11-point numerical scale : Zero means pain does not interfere with sleep and 10 means pain completely interferes with sleep." (NCT00219544)
Timeframe: 9 weeks

,
Interventionscore on scale (Least Squares Mean)
Change from randomization to Week 5 (n=70, 64)Change from randomization to Week 6 (n=66, 63)Change from randomization to Week 7 (n=60, 56)Change from randomization to Week 8 (n=63,53)Change from randomization to Week 9 (n=67,58)
Placebo0.590.970.780.720.73
Pregabalin0.070.10-0.03-0.13-0.01

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Number of Subjects With >= 30% Reduction in Mean Pain Score During Single-blind Treatment

"Responders = ≥30% reduction in mean pain score at end of single-blind treatment phase compared to weekly mean pain score at baseline. Mean of last 7 available pain scores from daily pain diary while on single-blind treatment. A Daily Pain Rating Score : 11-point numerical scale ranging from 0 (no pain) to 10 (worst possible pain)." (NCT00219544)
Timeframe: Week 4 (end of single-blind treatment phase)

Interventionparticipants (Number)
RespondersNon-Responders
Pregabalin16590

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Patient Global Impression of Change (PGIC) Categories by Number of Subjects

"Number of subjects that responded to PGIC Categories. PGIC is a subject-rated instrument that measures change in the subject's overall status on a 7-point scale. Scores range from~1 (very much improved) to 7 (very much worse)." (NCT00219544)
Timeframe: Week 9

,
Interventionparticipants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Placebo1232177601
Pregabalin2135156010

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Weekly Mean Pain Scores During the Double Blind Treatment Phase

"Mean Pain scores for weeks 4, 5, 6, 7, 8 and 9. Mean of last 7 available pain scores from daily pain diary while on single-blind treatment. A Daily Pain Rating Score : 11-point numerical scale ranging from 0 (no pain) to 10 (worst possible pain)." (NCT00219544)
Timeframe: Week 4 - 9

,
Interventionscore on scale (Mean)
Week 4 (n=73, 70)Week 5 (n=70,64)Week 6 (n=66,63)Week 7 (n=60,56)Week 8 (n=63,53)Week 9 (n=67,58)
Placebo2.493.143.403.203.163.29
Pregabalin2.682.622.752.532.512.80

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Weekly Mean Pain Scores During the Single-blind Treatment Phase

"Pain score at Week 0 and Week 4, end of single-bind treatment. Mean of last 7 available pain scores from daily pain diary while on single-blind treatment. A Daily Pain Rating Score : 11- point numerical scale ranging from 0 (no pain) to 10 (worst possible pain)." (NCT00219544)
Timeframe: 0 and 4 weeks

Interventionscore on scale (Mean)
Week 0 - BaselineWeek 4 - end of single-blind treatment
Pregabalin6.293.79

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Weekly Mean Sleep Interference Scores During the Double Blind Treatment Phase

"Mean Sleep Interference scores for weeks 4, 5, 6, 7, 8 and 9. Mean of last 7 available SI scores from daily SI diary while on single-blind treatment. Daily SI rating scale (DSIS) consists of an 11-point numerical scale : Zero means pain does not interfere with sleep and 10 means pain completely interferes with sleep." (NCT00219544)
Timeframe: Week 9

,
Interventionscore on scale (Mean)
Week 4 (n=73, 70)Week 5 (n=70,64)Week 6 (n=66,63)Week 7 (n=60,56)Week 8 (n=63,53)Week 9 (n=67,58)
Placebo1.622.242.532.382.362.40
Pregabalin1.681.761.851.661.591.66

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Weekly Mean Sleep Interference Scores During the Single-Blind Treatment Phase

"Sleep Interference (SI) score at Week 0 and Week 4, end of single-bind treatment. Mean of last 7 available SI scores from daily SI diary while on single-blind treatment. Daily SI rating scale (DSIS) consists of an 11-point numerical scale : Zero means pain does not interfere with sleep and 10 means pain completely interferes with sleep." (NCT00219544)
Timeframe: 0 and 4 weeks

Interventionscore on scale (Mean)
Week 0 - BaselineWeek 4 - end of single-blind treatment
Pregabalin4.802.72

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Mean Pain Score for Non-responders at End of Single-blind Treatment Phase

"Change from baseline of mean of last 7 available pain scores from daily pain diary while on single-blind treatment. Daily Pain Rating Score:11-point numerical scale 0 (no pain) to 10 (worst possible pain). Non-Responders = <30% reduction in mean pain score at end of single-blind treatment phase compared to weekly mean pain score at baseline." (NCT00219544)
Timeframe: Week 4

Interventionscore on scale (Mean)
Pregabalin-0.49

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Mean Pain Score for Responders at End of Single-blind Treatment Phase. Change From Baseline of Mean of Last 7 Available Pain Scores From Daily Pain Diary While on Single-blind Treatment.

"Daily Pain Rating Score:11-point numerical scale 0 (no pain) to 10 (worst possible pain). Responders = ≥30% reduction in mean pain score at end of single-blind treatment phase compared to weekly mean pain score at baseline." (NCT00219544)
Timeframe: Week 4

Interventionscore on scale (Mean)
Pregabalin-3.60

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Mean Sleep Interference Score

"Mean Sleep Interference (SI) score at end of Double-Blind treatment = mean of last 7 available SI scores from daily SI diary while on Double-Blind treatment. Daily SI rating scale (DSIS) consists of an 11-point numerical scale : Zero means pain does not interfere with sleep and 10 means pain completely interferes with sleep." (NCT00219544)
Timeframe: Week 9

Interventionscore on scale (Least Squares Mean)
Pregabalin1.81
Placebo2.52

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Neuropathic Pain in Subjects With Peripheral Neuropathic Pain Conditions During the Double-blind Phase

"Pain score end of Double-Blind treatment = mean of last 7 available pain scores from daily pain diary while on Double-Blind treatment. A Daily Pain Rating Score : 11- point numerical scale ranging from 0 (no pain) to 10 (worst possible pain)." (NCT00219544)
Timeframe: 9 weeks

Interventionscore on scale (Least Squares Mean)
Pregabalin2.84
Placebo3.62

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Time to Meaningful Increase in Pain During Double-blind Treatment Phase (Number of Participants)

Number of participants who experienced a meaningful increase in pain also includes participants who took rescue medication for pain due to peripheral neuropathic pain or discontinued from the study . (NCT00219544)
Timeframe: Week 9

Interventionparticipants (Number)
Pregabalin28
Placebo28

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Categorized Daily Pain Score

Mean number of days in each pain category. DPRS Daily Pain Rating Score Categories: No pain (score 0), Mild pain (scores 1-3), Moderate pain (scores 4-6), Severe pain (scores 7-10) (NCT00219544)
Timeframe: Week 9

,
Interventiondays (Mean)
No painMild painModerate painSevere pain
Placebo0.917.48.61.7
Pregabalin3.319.57.41.2

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Intensity of Neuropathic Pain -Visual Analog Scale (NeP - VAS)

Change in Scale from randomization to Week 9. Scale to measure Neuropathic Pain -Visual Analog Scale (NeP - VAS): the subject places a mark on the VAS scale (0 to 100) where 0 represents the worst imaginable health state and 100 represents the best imaginable health state. (NCT00219544)
Timeframe: Week 4, Week 9

Interventionscores on a scale (Least Squares Mean)
Pregabalin6.9
Placebo15.9

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Change in Neuropathic Pain Symptom Inventory (NPSI) Subscores and Total Intensity Scores

Change in mean score NPSI, questionnaire evaluates symptoms of neuropathic pain. 10 pain descriptors questions answered on an 11-point scale 0 (no pain)-10 (most intense pain imaginable). 2 items related to temporal pain assessed on 5-point scales. The NPSI derives 5 pain subscores & a total intensity score calculated from the 5 pain subscores (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionscore on scale (Least Squares Mean)
Burning (n=127,126)Pressing (n=125,126)Paroxysmal (n=127,127)Evoked (n=126,128)Paresthesia/dysesthesia (n=126,128)Total score (n=124,126)
Placebo-0.22-0.15-0.17-0.15-0.23-0.01
Pregabalin-0.19-0.17-0.16-0.16-0.19-0.01

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Gracely Pain Scale Score

The modified Gracely Pain Scale is a 13-point verbal rating scale based on sensory pain descriptors ranked by severity from nothing (rank = 0) to extremely intense (rank = 15). Subjects selected the verbal descriptors that best matched their average neuropathic pain during the last 24 hours prior to assessment. (NCT00232141)
Timeframe: Week 14

Interventionscore on scale (Mean)
Pregabalin-2.70
Placebo-2.76

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Change From Baseline for MOS (Medical Outcomes Study)-Sleep Subscales and Sleep Problem Indices

"Change from baseline in MOS-Sleep subscales & Sleep Problem Indices. Twelve item subject-rated questionnaire assessing sleep constructs. Scores range from 0 - 100 and higher scores reflect more impairment. Subscales sleep adequacy, quantity of sleep and optimal sleep low scores reflect impairment." (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionscore on scale (Least Squares Mean)
Disturbances (n=127,125)Quantity (n=123,122)Adequacy (n=126,128)Awaken Short of Breath or w/Headache (n=125,128)Somnolence (n=125,128)Snoring (n=122,126)Sleep problems Index I (n=122,127)Sleep problems Index II (n=122,125)
Placebo-14.710.6510.09-7.93-7.01-5.00-11.18-11.59
Pregabalin-13.170.3910.04-6.52-5.614.34-10.11-10.16

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Change From Baseline for Hospital Anxiety and Depression Scale (HADS) Subscales

Change from Baseline in scale at endpoint: normal (score 0) to severe (score 21). (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionscore on scale (Least Squares Mean)
AnxietyDepression
Placebo-1.59-1.52
Pregabalin-1.33-1.10

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Change From Baseline for Modified Brief Pain Inventory-Short Form (mBPI-sf) Scores

"Change from baseline to endpoint in the mBPI-sf to assess pain severity and pain interference with functional activities: 11-point scale ranging from no pain (0) to pain as bad as you can imagine (10)" (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionscore on scale (Least Squares Mean)
Pain Severity Index (n=148,147)Pain Interference Index (n=146,146)
Placebo-2.56-2.39
Pregabalin-2.42-2.32

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Change in Quantitative Assessment of Neuropathic Pain (QANeP)

Change in a quantitative assessment of the participants' neuropathic pain were on an 11-point scale ranging from 0 (no pain) to 10 (most intense pain imaginable). (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionscore on scale (Least Squares Mean)
Static mechanical allodynia (n=120,119)Dynamic mechanical allodynia (n=120,119)Punctate hyperalgesia testing area (n=118,119)Temporal summation to tactile stimuli (n=120,118)Cold allodynia testing area (n=120,117)Cold hyperalgesia testing area (n=117,112)
Placebo-1.22-0.77-0.68-1.04-0.90-0.93
Pregabalin-1.11-0.99-0.78-1.21-1.19-0.82

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Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Sleep)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=145,147)Week 2 (n=139,142)Week 6 (n=131,134)Week 10 (n=126,128)Week 14 (n=116,120)Endpoint (n=148,147)
Placebo-1.12-1.86-2.68-2.71-2.90-2.74
Pregabalin-1.80-2.22-3.06-3.10-2.65-2.51

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Categorized Patient Global Impression of Change (PGIC)

The PGIC is a participant-rated instrument that measures change in the participants overall status on a 7-point scale. Scores range from 1 (very much improved) to 7 (very much worse). PGIC was evaluated using 3 categories of Improvement (Scores 1-3), No Change (Score 4), and Worsening (Scores 5-7). (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionparticipants (Number)
Improved (scores 1-3)No Change (score 4)Worsened (scores 5-7)
Placebo843210
Pregabalin106175

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Change From Baseline for NRS-Sleep Interference Scores

11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]) (NCT00232141)
Timeframe: Baseline, Week 14

Interventionscore on scale (Least Squares Mean)
Pregabalin-2.53
Placebo-2.34

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Change From Baseline for Numerical Rating Scale (NRS) Pain Scores at Endpoint-LOCF (Last Observation Carried Forward) Relative to Baseline

Change from baseline in mean NRS-Pain scores at endpoint-LOCF. Daily pain scores were assessed on an 11-point numerical rating scale <(NRS)-Pain> ranging from 0 (no pain) to 10 (worst possible pain). (NCT00232141)
Timeframe: Baseline, Week 14

Interventionscore on scale (Least Squares Mean)
Pregabalin-2.88
Placebo-2.63

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Change in Number of Pain Attacks Compared to Baseline - NPSI (Neuropathic Pain Symptom Inventory)

Change from baseline in the number of pain attacks at endpoint. The NPSI includes the temporal item for assessing the numbers of pain attacks. Assessed using a 5-point specific categorical scale and refers to the past 24 hours at endpoint. (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionparticipants (Number)
Improved from baseline to endpointNo change from baseline to endpointWorsened from baseline to endpoint
Placebo663221
Pregabalin653519

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Change in NRS-Sleep Interference Scores

Change in mean Pain-related sleep interference was assessed on an 11-point scale from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). Weekly mean score was the sum of the daily diary scores divided by the number of diary entries during that week. (NCT00232141)
Timeframe: Baseline, Weeks 1-14

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=135, 133)Week 2 (n=123,132)Week 3 (n=117,121)Week 4 (n=117,124)Week 5 (n=115,121)Week 6 (n=110,119)Week 7 (n=110,111)Week 8 (n=109,111)Week 9 (n=105,111)Week 10 (n=104,114)Week 11 (n=100,106)Week 12 (n=94,105)Week 13 (n=94,105)Week 14 (n=90,94)
Placebo-0.68-1.36-1.68-2.01-2.22-2.18-2.28-2.29-2.25-2.32-2.32-2.29-2.28-2.30
Pregabalin-1.04-1.99-2.26-2.34-2.57-2.73-2.89-2.98-2.73-2.79-2.76-2.83-2.95-2.93

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Change in NRS-Pain Scores From Baseline to Endpoint-BOCF (Modified Baseline Observation Carried Forward)

Change from baseline in mean NRS-Pain scores at endpoint-BOCF. Daily pain scores were assessed on an 11-point numerical rating scale <(NRS)-Pain> ranging from 0 (no pain) to 10 (worst possible pain). Change from baseline in mean weekly pain scores was analyzed using longitudinal models assuming data were missing at random (MAR) (NCT00232141)
Timeframe: Baseline, Weeks 1 - 14 and Endpoint-BOCF

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=136,133)Week 2 (n=126,132)Week 3 (n=118,121)Week 4 (n=118,124)Week 5 (n=116,121)Week 6 (n=111,119)Week 7 (n=112,111)Week 8 (n=111,111)Week 9 (n=107,111)Week 10 (n=106,114)Week 11 (n=102,106)Week 12 (n=96,105)Week 13 (n=96, 105)Week 14 (n=92,94)Endpoint BOCF (n=142,140)
Placebo-0.69-1.43-1.83-2.24-2.50-2.45-2.53-2.58-2.56-2.66-2.61-2.59-2.59-2.70-2.64
Pregabalin-1.14-1.92-2.36-2.66-2.79-2.98-3.22-3.33-3.09-2.98-3.05-3.14-3.21-3.19-2.72

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Change in Brief Pain Inventory-short Form (BPI-sf) Scores (The Worst Pain in the Past 24 Hours)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14, Endpoint - LOCF

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=145,147)Week 2 (n=139,143)Week 6 (n=132,134)Week 10 (n=126,128)Week 14 (n=116,120)Endpoint -LOCF (n=148,147)
Placebo-1.09-2.20-2.95-3.03-3.01-2.88
Pregabalin-1.52-2.18-3.08-3.02-2.97-2.82

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Change in Brief Pain Inventory-sf Scores (The Least Pain in the Past 24 Hours)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14, Endpoint-LOCF

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=145,147)Week 2 (n=139,143)Week 6 (n=132,134)Week 10 (n=126,128)Week 14 (n=116,120)Endpoint (n=148,147)
Placebo-0.80-1.44-2.05-2.13-2.41-2.20
Pregabalin-0.84-1.49-2.37-2.32-2.27-2.07

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Change in Brief Pain Inventory-sf Scores (How Much Pain Are You Having Right Now)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=144,147)Week 2 (n=139,143)Week 6 (n=132,134)Week 10 (n=126,128)Week 14 (n=116, 120)Endpoint (n=148,147)
Placebo-1.01-1.98-2.66-2.57-2.72-2.57
Pregabalin-1.56-2.02-2.66-2.72-2.43-2.26

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Duration of Spontaneous Pain-NPSI (Neuropathic Pain Symptom Inventory)

Change from baseline to endpoint in the duration of spontaneous pain. The NPSI includes the temporal item for assessment of duration of spontaneous, ongoing and paroxysmal pain. Assessed using a 5-point specific categorical scale and refers to the past 24 hours at endpoint. (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionparticipants (Number)
Improved from baseline to endpointNo change from baseline to endpointWorsened from baseline to endpoint
Placebo604026
Pregabalin634619

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Patient Global Impression of Change (PGIC) Rating

PGIC is a participant-rated instrument that measures change in the participants overall status on a 7-point scale. Scores range from 1 (very much improved) to 7 (very much worse). (NCT00232141)
Timeframe: Baseline, Week 14, Endpoint-LOCF

,
Interventionparticipants (Number)
Very much improved (score 1)Much improved (score 2)Minimally improved (score 3)No change (score 4)Minimally worse (score 5)Much worse (score 6)Very much worse (score 7)
Placebo27381932550
Pregabalin27413817230

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Quantitative Assessments of Neuropathic Pain (QANeP) Maximum Sensory Thresholds : Shift Table

Shift from baseline in maximum sensory thresholds (in grams representing the force equivalent of various sizes of von Frey filaments) as measured on QANeP. Improved - decrease in the maximum of the 3 trials at endpoint. Worsened - an increase. Note:Sensory Thresholds are the highest values of the 3 trials at baseline (Week=0) and endpoint (Week 14) (NCT00232141)
Timeframe: Baseline-Week 14 (Endpoint)

,
Interventionparticipants (Number)
Weight 2.83 ImprovedWeight 2.83 No ChangeWeight 2.83 WorsenedWeight 3.61 ImprovedWeight 3.61 No ChangeWeight 3.61 WorsenedWeight 4.31 ImprovedWeight 4.31 No ChangeWeight 4.31 WorsenedWeight 4.56 ImprovedWeight 4.56 No ChangeWeight 4.56 WorsenedWeight 5.07 ImprovedWeight 5.07 No ChangeWeight 5.07 WorsenedWeight 6.65 ImprovedWeight 6.65 No ChangeWeight 6.65 WorsenedNot Perceived ImprovedNot Perceived No ChangeNot Perceived Worsened
Placebo0132241213186781535560450
Pregabalin0001394178549108101272380

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Quantitative Assessments of Neuropathic Pain (QANeP) Median Sensory Thresholds : Shift Table

Shift from baseline in median sensory thresholds (designated as Weight) from 3 trials as measured on the QANeP. Improved - a decrease in the median of the three trials at endpoint. Worsened - an increase. Note: Sensory Thresholds are the highest values of the three Trials at both baseline (Week=0) and endpoint (Week 14). (NCT00232141)
Timeframe: Baseline-Week 14 (Endpoint)

,
Interventionparticipants (Number)
Weight 2.83 ImprovedWeight 2.83 No ChangeWeight 2.83 WorsenedWeight 3.61 ImprovedWeight 3.61 No ChangeWeight 3.61 WorsenedWeight 4.31 ImprovedWeight 4.31 No ChangeWeight 4.31 WorsenedWeight 4.56 ImprovedWeight 4.56 No ChangeWeight 4.56 WorsenedWeight 5.07 ImprovedWeight 5.07 No ChangeWeight 5.07 WorsenedWeight 6.65 ImprovedWeight 6.65 No ChangeWeight 6.65 WorsenedNot Perceived ImprovedNot Perceived No ChangeNot Perceived Worsened
Placebo03329131111127871131830340
Pregabalin01501010127986516561020260

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Responders - Decreases of at Least 30% in Mean Weekly Pain Score

Number of subjects that experienced at least 30% decrease in mean weekly pain. (NCT00232141)
Timeframe: Weeks 1-14 endpoint BOCF

,
Interventionparticipants (Number)
Week 1 (n=140,141)Week 2 (n=136,139)Week 3 (n=131,133)Week 4 (n=126,132)Week 5 (n=124,131)Week 6 (n=124,130)Week 7 (n=125,124)Week 8 (n=120,119)Week 9 (n=116,121)Week 10 (n=116,121)Week 11 (n=113,117)Week 12 (n=107,115)Week 13 (n=103,111)Week 14 (n=101,108)Endpoint-BOCF (n=146,147)
Placebo214651606870646265696357625481
Pregabalin335163646563697568646765625877

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Responders- Decreases of at Least 50% in Mean Weekly Pain Score

Number of subjects that experienced at least a 50% decrease in mean weekly pain. (NCT00232141)
Timeframe: Weeks 1-14 Endpoint BOCF (modified baseline observation carried forward)

,
Interventionparticipants (Number)
Week 1 (n=140,141)Week 2 (n=136,139)Week 3 (n=131,133)Week 4 (n=126,132)Week 5 (n=124,131)Week 6 (n=124,130)Week 7 (n=125,124)Week 8 (n=120,119)Week 9 (n=116,121)Week 10 (n=116,121)Week 11 (n=113,117)Week 12 (n=107,115)Week 13 (n=103,111)Week 14 (n=101,108)Endpoint-BOCF (n=146,147)
Placebo62333414747384345494646474462
Pregabalin132835454849535450454345454254

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Shift in Hospital Anxiety and Depression (HADS) Subscales

Anxiety subscale analyzes generalized anxiety (anxious mood,restlessness, anxious thoughts, panic attacks). The depression subscale focuses on the state of lost interest and diminished pleasure response. A score of Normal = 0-7, Mild = 8-10, Moderate = 11-14, Severe = 15-21. (NCT00232141)
Timeframe: Baseline, Week 14

,
Interventionparticipants (Number)
Anxiety-normal (baseline&endpoint)Anxiety-normal (baseline)& mild (endpoint)Anxiety-normal (baseline)& moderate(endpoint)Anxiety-normal(baseline)&severe(endpoint)Anxiety-mild(baseline)& normal(endpoint)Anxiety-mild(baseline)& mild(endpoint)Anxiety-mild(baseline)& moderate(endpoint)Anxiety-mild(baseline)& severe(endpoint)Anxiety-moderate(baseline)& normal(endpoint)Anxiety-moderate(baseline)& mild(endpoint)Anxiety-moderate(baseline)& moderate(endpoint)Anxiety-moderate(baseline)& severe(endpoint)Anxiety-severe(baseline)& normal(endpoint)Anxiety-severe(baseline)& mild(endpoint)Anxiety-severe(baseline)& moderate(endpoint)Anxiety-severe(baseline)&severe(endpoint)Depression-normal (baseline&endpoint)Depression-normal (baseline)&mild (endpoint)Depression-normal (baseline)&moderate (endpoint)Depression-normal (baseline)&severe (endpoint)Depression-mild (baseline)&normal(endpoint)Depression-mild (baseline)&mild(endpoint)Depression-mild (baseline)&moderate(endpoint)Depression-mild (baseline)&severe(endpoint)Depression-moderate (baseline)&normal(endpoint)Depression-moderate (baseline)&mild(endpoint)Depression-moderate (baseline)&moderate(endpoint)Depression-moderate (baseline)&severe(endpoint)Depression-severe (baseline)&normal(endpoint)Depression-severe (baseline)&mild(endpoint)Depression-severe (baseline)&moderate(endpoint)Depression-severe (baseline)&severe(endpoint)
Placebo5562019660895112626972021520117210001
Pregabalin4772023722116830172758211953056210001

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Shift Table in NPSI (Neuropathic Pain Symptom Inventory)- Number of Pain Attacks

Number of subjects reporting pain attacks. The NPSI includes the temporal item for assessing the numbers of pain attacks. Assessed using a 5-point specific categorical scale and refers to the past 24 hours at endpoint. (NCT00232141)
Timeframe: Baseline-Week 14 (Endpoint)

,
Interventionparticipants (Number)
>20 attacks (baseline & endpoint)>20 attacks (baseline), 11-20 attacks (endpoint)>20 attacks (baseline), 6-10 attacks (endpoint)>20 attacks (baseline), 1-5 attacks (endpoint)>20 attacks (baseline), no pain attacks (endpoint)11-20 attacks (baseline), >20 attacks (endpoint)11-20 attacks (baseline), 11-20 attacks (endpoint)11-20 attacks (baseline), 6-10 attacks (endpoint)11-20 attacks (baseline), 1-5 attacks (endpoint)11-20 attacks (baseline), no attacks (endpoint)6-10 attacks (baseline), >20 attacks (endpoint)6-10 attacks (baseline), 11-20 attacks (endpoint)6-10 attacks (baseline), 6-10 attacks (endpoint)6-10 attacks (baseline), 1-5 attacks (endpoint)6-10 attacks (baseline), no attacks (endpoint)1-5 attacks (baseline), >20 attacks (endpoint)1-5 attacks (baseline), 11-20 attacks (endpoint)1-5 attacks (baseline), 6-10 attacks (endpoint)1-5 attacks (baseline), 1-5 attacks (endpoint)1-5 attacks (baseline), no attacks (endpoint)no attacks (baseline), >20 attacks (endpoint)no attacks (baseline), 11-20 attacks (endpoint)no attacks (baseline), 6-10 attacks (endpoint)no attacks (baseline), 1-5 attacks (endpoint)no attacks (baseline), no attacks (endpoint)
Placebo6443202885728174123151120131
Pregabalin42133227109125146337211000013

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Shift Table NPSI (Neuropathic Pain Symptom Inventory) - Duration of Spontaneous Pain

Number of subjects reporting duration of spontaneous pain. The NPSI includes the temporal item for assessment of duration of spontaneous, ongoing and paroxysmal pain. Assessed using a 5-point specific categorical scale and refers to the past 24 hours at endpoint. (NCT00232141)
Timeframe: Baseline-Week 14 (Endpoint)

,
Interventionparticipants (Number)
Permanently (baseline&endpoint)Permanently (baseline), 8-12 hours (endpoint)Permanently (baseline), 4-7 hours (endpoint)Permanently (baseline), 1-3 hours (endpoint)Permanently (baseline), < 1 hr (endpoint)8-12 hours (baseline), permanently (endpoint)8-12 hrs (baseline), 8-12 hrs (endpoint)8-12 hrs (baseline), 4-7 hrs (endpoint)8-12 hrs (baseline), 1-3 hours (endpoint)8-12 hrs (baseline), <1 hr (endpoint)4-7 hrs (baseline), permanently (endpoint)4-7 hrs (baseline), 8-12 hrs (endpoint)4-7 hrs (baseline), 4-7 hrs (endpoint)4-7 hrs (baseline), 1-3 hrs (endpoint)4-7 hrs (baseline), < 1 hr (endpoint)1-3 hrs (baseline), permanently (endpoint)1-3 hrs (baseline), 8-12 hrs (endpoint)1-3 hrs (baseline), 4-7 hrs (endpoint)1-3 hrs (baseline), 1-3 hrs (endpoint)1-3 hrs (baseline), <1 hr (endpoint)Less than 1 hr (baseline), permanently (endpoint)Less than 1 hr (baseline), 8-12 hrs (endpoint)Less than 1 hr (baseline), 4-7 hrs (endpoint)Less than 1 hr (baseline), 1-3 hrs (endpoint)<1 hr (baseline), <1 hr (endpoint)
Placebo21565577945369880253510020
Pregabalin1511844210548379371216902016

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Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Walking Ability)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=144,147)Week 2 (n=139,142)Week 6 (n=132,134)Week 10 (n=125,128)Week 14 (n=115,120)Endpoint (n=148,147)
Placebo-1.23-1.84-2.33-2.33-2.54-2.42
Pregabalin-1.40-1.84-2.44-2.13-2.09-2.11

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Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Mood)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=144,147)Week 2 (n=138,143)Week 6 (n=131,134)Week 10 (n=125,128)Week 14 (n=115,120)Endpoint (n=147,147)
Placebo-1.20-2.06-2.41-2.37-2.76-2.46
Pregabalin-1.58-2.23-2.60-2.52-2.53-2.31

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Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Relations With Other People)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=145,147)Week 2 (n=139,143)Week 6 (n=132,134)Week 10 (n=126,128)Week 14 (n=115,120)Endpoint (n=148,147)
Placebo-0.87-1.39-1.67-1.91-2.10-1.99
Pregabalin-1.06-1.54-1.91-1.84-2.08-2.00

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Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Normal Work Including Both Work Outside the Home and Housework)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=144,147)Week 2 (n=138,143)Week 6 (n=130,134)Week 10 (n=125,128)Week 14 (n=114,120)Endpoint (n=147,147)
Placebo-1.42-1.99-2.45-2.36-2.70-2.61
Pregabalin-1.47-2.10-2.54-2.49-2.21-2.30

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Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your General Activity)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=145,147)Week 2 (n=139,143)Week 6 (n=132,134)Week 10 (n=125,128)Week 14 (n=116,120)Endpoint (n=148,147)
Placebo-1.04-1.87-2.25-2.26-2.46-2.23
Pregabalin-1.35-1.95-2.37-2.32-2.16-2.15

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Change in Brief Pain Inventory-sf Scores (During the Past 24 Hours, How Pain Has Interfered With Your Enjoyment of Life)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=145,146)Week 2 (n=139,141)Week 6 (n=132,131)Week 10 (n=126,127)Week 14 (n=116,119)Endpoint (n=148,146)
Placebo-1.20-2.13-2.64-2.45-2.79-2.60
Pregabalin-1.52-2.20-2.69-2.59-2.78-2.64

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Change in Brief Pain Inventory-sf Scores (Average Level of Pain in the Past 24 Hours)

Change in mean BPI-sf, is a self-administered questionnaire to assess pain severity 0 (no pain to 10 (pain as bad as you can imagine) and pain interference 0 (does not interfere) to 10 (completely interferes) during a 24 hour period. The BPI-sf was used to derive the change from baseline in 4 pain severity questions & 7 pain interference questions. (NCT00232141)
Timeframe: Baseline, Weeks 1,2,6,10,14 and Endpoint

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=145,147)Week 2 (n=139,143)Week 6 (n=132,134)Week 10 (n=126,128)Week 14 (n=116,120)Endpoint (n=148,147)
Placebo-0.90-1.77-2.55-2.61-2.71-2.60
Pregabalin-1.15-1.79-2.64-2.86-2.58-2.37

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Duration Adjusted Average Change From Baseline in NRS Pain Scores

Duration Adjusted Average Change(DAAC) in NRS-Pain score = (mean at observation - mean at baseline)x(proportion of planned study duration that the subject completed). (NCT00232141)
Timeframe: Weekly: Week 1 - Week 14

Interventionscore on scale (Least Squares Mean)
Pregabalin-2.45
Placebo-2.07

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Mean Visual Analogue Scale (VAS) Pain Scores

"Pain scores were assessed on a 100 mm Visual Analogue Scale (VAS); scores range from 0= no pain to 100= worse pain. Subjects assessed their pain during the last week.~Endpoint = last non-missing observation carried forward after Baseline visit." (NCT00264875)
Timeframe: Baseline, Week 4, Week 8, Week 12, and Endpoint

Interventionscore on scale (Mean)
Baseline (n=203)Week 4 (n=204)Week 8 (n=200)Week 12 (n=207)Endpoint (n=217)
Pregabalin38.6130.7530.1628.9529.39

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Exit Due to Any Reason After 4-week Dose Escalation Phase

Number of participants who exited the study due to any reason after the 4-week dose escalation phase. Time in days, from first day of study treatment to day of exit after Day 28 of the study due to any reason (ie, last day on study medication) was inestimable. Participants who did not exit or did not reach this phase were right censored as of the last day on study medication. (NCT00280059)
Timeframe: Week 4 up to Week 56

Interventionparticipants (Number)
Pregabalin78
Lamotrigine58

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Exit Due to Lack of Efficacy After 4-week Dose Escalation Phase

Number of participants who exited the study due to lack of efficacy after the 4-week dose escalation phase. Time in days, from first day of study treatment to day of exit due to lack of efficacy after Day 28 of the escalation phase (ie, last day on study medication) was inestimable. Participants who did not exit or exited for a different reason were right censored as of the last day on study medication. (NCT00280059)
Timeframe: Week 4 up to Week 56

Interventionparticipants (Number)
Pregabalin78
Lamotrigine58

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Exit for Any Reason During the Double-blind Treatment Phase (Including Dose Escalation Phase)

Number of participants who exited the study for any reason during the double blind treatment phase. Time in days, from first day of study treatment to day of exit from the study due to any reason (ie, last day on study medication) was inestimable. Participants who did not exit the study were right censored as of the last day on study medication. (NCT00280059)
Timeframe: Week 0 to Week 56

Interventionparticipants (Number)
Pregabalin94
Lamotrigine80

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Percentage of Participants Who Achieved at Least 6 Consecutive Months of Seizure Freedom (Responders) by Final Dosage Levels and Treatment Group

Responder = participant who achieved at least 6-months of seizure freedom (all seizures) after Week 4, and up to Week 56. Dose Level defined as last total-daily-dose received after Week 4, and up to Week 56. (NCT00280059)
Timeframe: Week 5 up to Week 56

Interventionpercentage of participants (Number)
Pregabalin 150 mg/Day70.5
Pregabalin 300 mg/Day59.7
Pregabalin 450 mg/Day20.4
Pregabalin 600 mg/Day13.0
Lamotrigine 100 mg/Day80.5
Lamotrigine 200 mg/Day67.9
Lamotrigine 400 mg/Day38.2
Lamotrigine 500 mg/Day16.7

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Percentage of Seizure-free Participants (Responders) During Efficacy Assessment Phase

Responders = participants who achieved any 6 consecutive months (>182 days) of seizure-freedom (absence of partial seizures, generalized seizures and unclassified epileptic seizures) during the 52 week efficacy assessment phase. (NCT00280059)
Timeframe: Week 5 up to Week 56

Interventionpercentage of participants (Number)
Pregabalin51.6
Lamotrigine67.9

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Time to First Seizure After the 4-Week Dose Escalation Phase

Time in days, from first day of study treatment to the day of first seizure after Day 28 of the escalation phase (ie, last day on study medication). Participants who did not reach this phase or who did not have a seizure after Day 28 were right censored from the analysis as of the last day on study medication. (NCT00280059)
Timeframe: Week 4 up to Week 56

Interventiondays (Median)
Pregabalin85
Lamotrigine211

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Mean Monthy Seizure Frequency of Responders for the Months After Achieving 6 Consecutive Months of Seizure Freedom: All Partial Seizures

All partial seizures include complex partial seizures, simple partial seizures, and partial seizures evolving to secondarily generalized seizures. Seizure frequency based on 28-day seizure rate: number (#) of seizures in period (month) divided by # days in period minus # of missing diary days in period * 28. Responder = participant who achieved at least 6 months of seizure freedom after Week 4 and up to Week 56. Monthly seizure frequency measured from day of achievement of 6 months of seizure freedom. (NCT00280059)
Timeframe: Month 1 through Month 9 (after 6 months seizure freedom achieved)

,
Intervention28-day seizure rate (Mean)
Month 1 (n=162, 208)Month 2 (n=155, 194)Month 3 (n=147, 184)Month 4 (n=139, 173)Month 5 (n=127, 158)Month 6 (n=122, 152)Month 7 (n=105, 136)Month 8 (n=1, 5)Month 9 (n=0, 1)
Lamotrigine0.040.030.070.050.100.030.280.006.00
Pregabalin0.190.280.050.090.150.020.000.00NA

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Mean Monthy Seizure Frequency of Responders for the Months After Achieving 6 Consecutive Months of Seizure Freedom: All Seizures

Seizure frequency based on 28-day seizure rate: number (#) of seizures in period (month) divided by # days in period minus # of missing diary days in period * 28. Responder = participant who achieved at least 6 months of seizure freedom after Week 4 and up to Week 56. Monthly seizure frequency measured from day of achievement of 6 months of seizure freedom. (NCT00280059)
Timeframe: Month 1 through Month 9 (after 6 months seizure freedom achieved)

,
Intervention28-day seizure rate (Mean)
Month 1 (n=162, 208)Month 2 (n=155, 194)Month 3 (n=147, 184)Month 4 (n=139, 173)Month 5 (n=127, 158)Month 6 (n=122, 152)Month 7 (n=105, 136)Month 8 (n=1, 5)Month 9 (n=0, 1)
Lamotrigine0.050.030.070.050.100.030.290.006.00
Pregabalin0.190.280.070.090.180.020.000.00NA

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Mean Monthy Seizure Frequency: All Partial Seizures

All partial seizures include complex partial seizures, simple partial seizures, and partial seizures evolving to secondarily generalized seizures. Seizure frequency based on 28-day seizure rate: number (#) of seizures in period (month) divided by # days in period minus # of missing diary days in period * 28. Month of time = number of months after Week 4 (Dose Escalation). (NCT00280059)
Timeframe: Baseline up to Week 60

,
Interventionseizures/28 days (Mean)
Dose escalation phase (n=329, 330)Month 1 (n=314, 308)Month 2 (n=300, 295)Month 3 (n=287, 288)Month 4 (n=279, 278)Month 5 (n=274, 276)Month 6 (n=266, 272)Month 7 (n=260, 270)Month 8 (n=256, 266)Month 9 (n=253, 262)Month 10 (n=250, 257)Month 11 (n=242, 254)Month 12 (n=238, 252)Month 13 (n=210, 227)Taper (n=71, 45)
Lamotrigine5.084.213.213.541.671.581.411.501.361.381.331.411.672.1119.97
Pregabalin2.562.231.180.940.890.780.820.780.770.711.050.790.940.652.13

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Mean Monthy Seizure Frequency: All Seizures

Seizure frequency based on 28-day seizure rate: number (#) of seizures in period (month) divided by # days in period minus # of missing diary days in period * 28. Month of time = number of months after Week 4 (Dose Escalation). (NCT00280059)
Timeframe: Baseline up to Week 60

,
Interventionseizures/28 days (Mean)
Dose-escalation phase (n=329, 330)Month 1 (n=314, 308)Month 2 (n=300, 295)Month 3 (n=287, 288)Month 4 (n=279, 278)Month 5 (n=274, 276)Month 6 (n=266, 272)Month 7 (n=260, 270)Month 8 (n=256, 266)Month 9 (n=253, 262)Month 10 (n=250, 257)Month 11 (n=242, 254)Month 12 (n=238, 252)Month 13 (n=210, 227)Taper (n=71, 45)
Lamotrigine5.104.243.223.571.681.591.411.501.371.381.331.411.672.1219.97
Pregabalin2.742.311.531.021.060.870.890.830.820.781.060.810.960.652.13

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Time to 6 Consecutive Months of Seizure-freedom After 4-week Dose Escalation Phase: All Seizures

Time in days, from first day of study medication to the first 6 months of seizure freedom after Day 28. Participants who did not achieve 6 months seizure freedom after Day 28 were censored from analysis. (NCT00280059)
Timeframe: Week 4 up to Week 56

Interventiondays (Median)
Pregabalin254
Lamotrigine183

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Median Monthy Seizure Frequency of Responders for the Months After Achieving 6 Consecutive Months of Seizure Freedom: All Partial Seizures

All partial seizures include complex partial seizures, simple partial seizures, and partial seizures evolving to secondarily generalized seizures. Seizure frequency based on 28-day seizure rate: number (#) of seizures in period (month) divided by # days in period minus # of missing diary days in period * 28. Responder = participant who achieved at least 6 months of seizure freedom after Week 4 and up to Week 56. Monthly seizure frequency measured from day of achievement of 6 months of seizure freedom. (NCT00280059)
Timeframe: Month 1 through Month 9 (after 6 months seizure freedom achieved)

,
Interventionseizures/28 days (Median)
Month 1 (n=162, 208)Month 2 (n=155, 194)Month 3 (n=147, 184)Month 4 (n=139, 173)Month 5 (n=127, 158)Month 6 (n=122, 152)Month 7 (n=105, 136)Month 8 (n=1, 5)Month 9 (n=0, 1)
Lamotrigine0.00.00.00.00.00.00.00.06.0
Pregabalin0.00.00.00.00.00.00.00.0NA

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Exit Due to Adverse Events During the Double-blind Treatment Phase (Including Dose Escalation Phase)

Number of participants who exited the study due to adverse events during the double-blind treatment period. Time in days, from first day of study treatment to day of exit from the study due to an adverse event (ie, last day on study medication) during the double blind treatment period (including dose escalation phase) was inestimable. Observations with other reasons for exiting or participants who did not exit the study were right censored as of the last day on study medication. (NCT00280059)
Timeframe: Week 0 to Week 56

Interventionparticipants (Number)
Pregabalin33
Lamotrigine31

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Change From Baseline to Week 56 in Hospital Anxiety and Depression Scale (HADS)

Participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items; range: 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of symptoms. Scores relative to start of randomized treatment. (NCT00280059)
Timeframe: Baseline to Week 56

,
Interventionscores on scale (Least Squares Mean)
AnxietyDepression
Lamotrigine-1.1-0.7
Pregabalin-0.3-0.1

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Median Monthy Seizure Frequency: All Seizures

Seizure frequency based on 28-day seizure rate: number (#) of seizures in period (month) divided by # days in period minus # of missing diary days in period * 28. Month of time = number of months after Week 4 (Dose Escalation). (NCT00280059)
Timeframe: Baseline up to Week 60

,
Interventionseizures/28 days (Median)
Dose-escalation phase (Weeks 1 - 4)(n=329, 330)Month 1 (n=314, 308)Month 2 (n=300, 295)Month 3 (n=287, 288)Month 4 (n=279, 278)Month 5 (n=274, 276)Month 6 (n=266, 272)Month 7 (n=260, 270)Month 8 (n=256, 266)Month 9 (n=253, 262)Month 10 (n=250, 257)Month 11 (n=242, 254)Month 12 (n=238, 252)Month 13 (n=210, 227)Taper (Week 57 to Week 60) (n=71, 45)
Lamotrigine0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Pregabalin0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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Median Monthy Seizure Frequency: All Partial Seizures

All partial seizures include complex partial seizures, simple partial seizures, and partial seizures evolving to secondarily generalized seizures. Seizure frequency based on 28-day seizure rate: number (#) of seizures in period (month) divided by # days in period minus # of missing diary days in period * 28. Month of time = number of months after Week 4 (Dose Escalation). (NCT00280059)
Timeframe: Baseline up to Week 60

,
Interventionseizures/28 days (Median)
Dose-escalation phase (Weeks 1 - 4) (n=329, 330)Month 1 (n=314, 308)Month 2 (n=300, 295)Month 3 (n=287, 288)Month 4 (n=279, 278)Month 5 (n=274, 276)Month 6 (n=266, 272)Month 7 (n=260, 270)Month 8 (n=256, 266)Month 9 (n=253, 262)Month 10 (n=250, 257)Month 11 (n=242, 254)Month 12 (n=238, 252)Month 13 (n=210, 227)Taper (Week 57 to Week 60) (n=71, 45)
Lamotrigine0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Pregabalin0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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Median Monthy Seizure Frequency of Responders for the Months After Achieving 6 Consecutive Months of Seizure Freedom: All Seizures

Seizure frequency based on 28-day seizure rate: number (#) of seizures in period (month) divided by # days in period minus # of missing diary days in period * 28. Responder = participant who achieved at least 6 months of seizure freedom after Week 4 and up to Week 56. Monthly seizure frequency measured from day of achievement of 6 months of seizure freedom. (NCT00280059)
Timeframe: Month 1 through Month 9 (after 6 months seizure freedom achieved)

,
Interventionseizures/28 days (Median)
Month 1 (n=162, 208)Month 2 (n=155, 194)Month 3 (n=147, 184)Month 4 (n=139, 173)Month 5 (n=127, 158)Month 6 (n=122, 152)Month 7 (n=105, 136)Month 8 (n=1, 5)Month 9 (n=0, 1)
Lamotrigine0.00.00.00.00.00.00.00.06.0
Pregabalin0.00.00.00.00.00.00.00.0NA

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Medical Outcomes Study Sleep Scale (MOS-SS): Optimal Sleep Subscale

MOS-SS: subject-rated instrument used to assess the key constructs of sleep over the past week; assesses sleep quantity and quality and is comprised 12 items yielding 7 subscale scores and 2 composite index scores. Optimal Sleep subscale is derived from sleep quantity average hours of sleep each night during the past week. Number of subjects with response Optimal if sleep quantity was 7 or 8 hours of sleep per night, and Non-optimal if average sleep was less than or greater than 7 to 8 hours per night. Analysis assesses the MOS-Sleep scale relative to the start of randomized treatment. (NCT00280059)
Timeframe: Week 8, Week 32, and Week 56

,
Interventionparticipants (Number)
Week 8: Optimal sleepWeek 8: Non-optimal sleepWeek 32: Optimal sleepWeek 32: Non-optimal sleepWeek 56: Optimal sleepWeek 56: Non-optimal sleep
Lamotrigine17312615510314590
Pregabalin1951031679715282

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Number of Subjects With a Weight Gain at End of Treatment of at Least 7% Relative to Baseline

Count of subjects with a weight gain of at least 7 percent relative to baseline. (NCT00288639)
Timeframe: Baseline, End of 21-week treatment

Interventionparticipants (Number)
Weight gain ≥7% to <10%Weight gain ≥10% to <15%Weight gain ≥15% to <20%Weight gain ≥20%
Pregabalin8221

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Percentage Change in Partial Seizure Frequency (All Partial Seizure Types) Between the 8 Week Baseline Period and 4 Week Intervals During the 21 Week Open-label Treatment Period.

Percentage change from baseline = [(4 week seizure frequency minus 8 week baseline) / (8 week baseline seizure frequency)] x 100. Negative mean R-Ratios and associated 95% CIs that do not include zero indicate reduction in partial seizure frequency. (NCT00288639)
Timeframe: 8 week baseline period and 21 week treatment period

Interventionpercentage change of events (Median)
1-28 Days29-56 Days57-84 Days85-112 Days113-140 Days>140 Days
Pregabalin-28.12-22.50-25.00-40.00-58.72-85.42

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Reduction in Partial Seizure Frequency Between Baseline and the Final 4 Weeks of the Observation Period.

Number of subjects with at least a 50% or 75% reduction in partial seizure frequency between baseline and treatment period. (NCT00288639)
Timeframe: 8 week baseline observation period & last 4 weeks of observation period

Interventionparticipants (Number)
>= 50% reduction>= 75% reduction
Pregabalin4233

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Subjects Achieving Seizure Freedom During Observation Period

Number of subjects achieving seizure freedom (no seizures) during last 4 weeks or duration of 12 week observation period. (NCT00288639)
Timeframe: Day 147 from the first dose of study drug

Interventionparticipants (Number)
seizure-free during last 4 weeksseizure-free during 12 weeks
Pregabalin3018

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Subjects Assessment of Optimal Sleep

Number of subjects that responded optimal or non-optimal sleep in Optimal Sleep subscale of Medical Outcomes Study (MOS) Sleep scale. (NCT00288639)
Timeframe: Baseline, End of 21-week treatment

Interventionparticipants (Number)
Optimal Sleep Baseline, Optimal Sleep Wk21Optimal Sleep Baseline, Non-Optimal Sleep Wk21Non-Optimal Sleep Baseline, Optimal Sleep Wk21Non-Optimal Sleep Baseline, Non-Optimal Sleep Wk21
Pregabalin2181225

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Subjects With Categorical Impression of Change in Overall Status Using the Clinical Global Impression of Change (CGIC)

The CGIC is a clinician's judgment of the overall change in the patient's condition over a defined period on a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). (NCT00288639)
Timeframe: End of 21-week treatment

Interventionpartcipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much WorseMissing / Not Done
Pregabalin153524114202

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Change From Baseline in Hospital Anxiety and Depression Scale(HADS) Depression and Anxiety Symptoms Subscales Between Baseline and Week 21.

Change in total HADS score between Baseline and Week 21. Each of the 14 items is scored 0, 1, 2 or 3 where a score of 3 corresponds to the most anxious/depressed. 7-item depression and 7-item anxiety subscales are summed; each resulting in a total score of 0-21. (NCT00288639)
Timeframe: Baseline, End of 21-week treatment

Interventionscore on scale (Mean)
HADS Depression Subscale (n=76)HADS Anxiety Subscale (n=76)
Pregabalin-0.59-1.68

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Percentage Change in Partial Seizure Frequency (All Partial Seizure Types) Between Baseline and the 12 Week Observation Period

Percentage change from baseline=[(12 week treatment observation period seizure frequency rate minus 8 week baseline period seizure frequency rate)/ 8 week baseline period seizure frequency rate] x 100. Seizure frequencies per 28-day period: = (total # of partial seizures in period x 28 / (total # of days in period). (NCT00288639)
Timeframe: 8 week baseline period & 12 week treatment observation period

Interventionpercentage change in events (Median)
Pregabalin-33.33

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Percentage Change in Partial Seizure Frequency (All Partial Seizure Types) Between Baseline and the Whole 21 Week Open-label Treatment Period.

Percentage change from baseline = ((21 weeks-8 weeks)/8 weeks)*100. Negative mean R-Ratios and associated 95% CIs that do not include zero indicate reduction in partial seizure frequency. (NCT00288639)
Timeframe: 8 week baseline period and 21 week treatment period

Interventionpercentage change in events (Median)
Pregabalin-29.39

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Change in Partial Seizure Frequency (All Partial Seizure Types) Between Baseline and the 12 Week Observation Period Categorized by Baseline Seizure Frequency

Percentage change from baseline = ((12 weeks - 8 weeks)/8 weeks)*100. Negative mean R-Ratios and associated 95% CIs that do not include zero indicate reduction in partial seizure frequency. (NCT00288639)
Timeframe: 8 week baseline observation period & 12 week treatment observation period

Interventionpercentage change in events (Median)
Baseline seizure frequency ≤3 per 28 days (n=43)Baseline seizure frequency >3 per 28 days (n=49)
Pregabalin-33.33-21.99

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Change in Partial Seizure Frequency by Type Between the 8 Week Baseline Period and During the 12 Week Observation Period.

Change from baseline = 12 week treatment observation period seizure frequency rate minus 8 week baseline period seizure frequency rate. (NCT00288639)
Timeframe: 8 week baseline period & 12 week treatment observation period

Interventionchange in median partial seizures (Median)
Simple Partial Seizures (n=47)Complex Partial Seizures (n=76)Evolve to Secondary Generalized (n=30)
Pregabalin0.000.000.00

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Changes From Baseline in Medical Outcomes Study (MOS) Sleep Scale Scores

Subjects recall sleep related activities over the previous 4 weeks. Low scores reflect greater impairment (except sleep adequacy, optimal sleep, &quantity). Range = 0 - 100 for Sleep Disturbance, Snoring, Awaken Short of Breath, Sleep Adequacy, Somnolence, & Sleep Problems Index. Quantity of Sleep Range = 0 - 24. Optimal Sleep Range 0 - 1. (NCT00288639)
Timeframe: Baseline, end of 21-week treatment

Interventionscore on scale (Mean)
Sleep Disturbance (n=72)Snoring (n=76)Awaken Short of Breath (n=77)Quantity of Sleep (n=66)Sleep Adequacy (n=77)Somnolence (n=77)Sleep Problems Index (n=72)
Pregabalin-3.957.89-1.820.054.290.52-2.81

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Impression of Change in Overall Status Using the Patient Global Impression of Change (PGIC)

The PGIC is a patient-rated instrument that measures change in patient's overall status on a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). (NCT00288639)
Timeframe: End of 21-week treatment

Interventionparticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much WorseMissing / Not Done
Pregabalin143617931013

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Number of Subjects Seizure-free

Count of subjects seizure free during the period. (NCT00288639)
Timeframe: last 4 weeks & whole 12 week treatment observation period

Interventionparticipants (Number)
During 12 week Observation period (n=84)During the last 4 weeks of Obs. period (n=86)
Pregabalin1830

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Davidson Trauma Scale (DTS): Severity

Self-rated instrument to measure symptom severity and treatment outcome in post traumatic stress disorder (PTSD). Scale of 17 PTSD symptoms over previous week; frequency scale: 0 (not at all) to 4 (every day), and severity 0 (not at all distressing) to 4(extremely distressing). The total Davidson Trauma Scale score ranges from 0 to 136. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionscore on a scale (Mean)
Baseline (n=116, 118)Week 8 (n=112, 113)
Placebo17.8315.43
Pregabalin15.5511.71

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Clinical Global Impression of Change (CGIC)

Clinical Global Impression of Change (CGIC): clinician's judgment of overall change in the patient's condition over a defined period on a 7-point scale; range: 1 Very Much Improved to 7 Very Much Worse. (NCT00292188)
Timeframe: Week 8

,
Interventionparticipants (Number)
very much improvedmuch improvedminimally improvedno changeminimally worsemuch worsevery much worse
Placebo6182661931
Pregabalin11333633541

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Hospital Anxiety and Depression Scale (HADS) Anxiety Score - FAS Subset With Moderate/Severe Baseline Scores

Hospital Anxiety and Depression Scale Anxiety Score (HADS-A) consists of 7 items that are assessed by a score of 0 = no anxiety to 3 = severe feeling of anxiety. The anxiety subscale determines a state of generalized anxiety (including anxious mood, restlessness, anxious thoughts, panic attacks). Score range = 0 to 21; higher scores indicate a greater intensity of anxiety. (NCT00292188)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin9.94
Placebo11.63

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Hospital Anxiety and Depression Scale (HADS) Anxiety Score

Hospital Anxiety and Depression Scale Anxiety Score (HADS-A) consists of 7 items that are assessed by a score of 0 = no anxiety to 3 = severe feeling of anxiety. The anxiety subscale determines a state of generalized anxiety (including anxious mood, restlessness, anxious thoughts, panic attacks). Score range = 0 to 21; higher scores indicate a greater intensity of anxiety (NCT00292188)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin6.52
Placebo7.36

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Weekly Mean Pain Score at End of Treatment (Week 8) From Daily Pain Diary

Daily Pain Diary scale : mean score from 11-point numerical scale of pain; range: 0 (no pain) to 10 (worst possible pain). Endpoint weekly mean pain score: mean of the last 7 available pain scores from a daily pain diary during double blind treatment. (NCT00292188)
Timeframe: each day of Week 8

Interventionscore on a scale (Least Squares Mean)
Pregabalin4.61
Placebo5.23

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Weekly Mean Pain Score From Daily Pain Diary

Daily Pain Diary scale : mean score from 11-point numerical scale of pain; range:0 (no pain) to 10 (worst possible pain). Mean of scores available for each week. (NCT00292188)
Timeframe: Baseline through Week 8

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=125, 125)Week 2 (n=121, 119)Week 3 (n=113, 116)Week 4 (n=108, 108)Week 5 (n=106, 104)Week 6 (n=104, 101)Week 7 (n=99, 99)Week 8 (n=97, 97)
Placebo5.795.645.445.275.265.345.265.24
Pregabalin5.545.374.914.954.804.764.744.64

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Patient Global Impression of Change (PGIC)

Patient Global Impression of Change (PGIC): a patient-rated instrument that measures change in patient's overall status on a 7-point scale; range: 1 Very Much Improved to 7 Very Much Worse. (NCT00292188)
Timeframe: Week 8

,
Interventionparticipants (Number)
very much improvedmuch improvedminimally improvedno changeminimally worsemuch worsevery much worse
Placebo62226521072
Pregabalin13274130333

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Number of Subjects With 30% and 50% Response in Weekly Mean Daily Pain Rating Score (DPRS) From Baseline Until Endpoint (Week 8)

Based on weekly mean daily pain rating score (DPRS), responders were defined as subjects with a >= 30% and >=50% reduction in weekly mean scores from baseline until endpoint (Week 8). Endpoint was calculated as the mean of the last 7 available pain scores from the daily pain diary while in the double-blind treatment phase. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionparticipants (Number)
30% Responder50% Responder
Placebo3218
Pregabalin5030

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Pain Treatment Satisfaction Scale (PTSS): Satisfaction With Current Pain Medication

Pain Treatment Satisfaction Scale (PTSS); Satisfaction with Current Pain Medication: measure of patient satisfaction with treatment for acute or chronic pain. Response range:1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00292188)
Timeframe: Screening, Week 8

,
Interventionscore on scale (Mean)
Screening (n=112, 110)Week 8 (n=122, 121)
Placebo51.0554.15
Pregabalin50.3362.36

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Pain Treatment Satisfaction Scale (PTSS): Medication Characteristics

Pain Treatment Satisfaction Scale (PTSS); Medication Characteristics: measure of patient satisfaction with treatment for acute or chronic pain. Response range: 1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00292188)
Timeframe: Screening, Week 8

,
Interventionscore on scale (Mean)
Screening (n=112, 110)End of Treatment (Week 8) (n=122, 121)
Placebo59.3970.39
Pregabalin57.4471.52

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Pain Treatment Satisfaction Scale (PTSS): Impact of Current Pain Medication

Pain Treatment Satisfaction Scale (PTSS); Impact of Current Pain Medication: measure of patient satisfaction with treatment for acute or chronic pain. Response range: 1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00292188)
Timeframe: Screening, Week 8

,
Interventionscore on a scale (Mean)
Screening (n=113, 113)End of Treatment (Week 8) (n=122, 121)
Placebo53.6042.56
Pregabalin54.5352.64

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Pain Treatment Satisfaction Scale (PTSS): Efficacy

Pain Treatment Satisfaction Scale (PTSS); Efficacy: measure of patient satisfaction with treatment for acute or chronic pain. Response range: 1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00292188)
Timeframe: Screening, Week 8

,
Interventionscore on scale (Mean)
Screening (n=112, 110)End of Treatment (Week 8) (n=122, 121)
Placebo42.7337.88
Pregabalin43.2353.21

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Modified Brief Pain Inventory Short Form (m-BPI-sf)

Modified Brief Pain Inventory Short Form (m-BPI-sf): self-administered questionnaire to assess severity of pain (measured by 4 items)and impact of pain on daily functions (measured by 7 items)in past 24 hours. Items are rated on an 11-point scale ranging from 0 to 10, with higher scores indicating greater pain and/or interference due to pain. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionscore on a scale (Mean)
pain interference index Baseline (n=125, 126)pain interference index Week 8 (n=120, 121)pain severity index Baseline (n= 122, 125)pain severity index Week 8 (n=120, 120)
Placebo4.694.175.725.21
Pregabalin4.573.315.364.20

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Medical Outcome Study (MOS) Sleep Subscales

Medical Outcome Study (MOS) is a patient-rated questionnaire consisting of 12 items that assess key constructs of sleep (7 subscales as well as a 9-item overall sleep problems index. MOS-Sleep Scale is scored from 0 to 100. A higher score indicates more disturbance. (NCT00292188)
Timeframe: Week 8

,
Interventionscore on a scale (Least Squares Mean)
Sleep Disturbance (n=117, 118)Snoring (n=111, 118)Awaken Short of Breath/Headache (n= 118, 117)Sleep Quantity (n=117, 118)Sleep Adequacy (n=119, 119)Somnolence (n=116, 114)Sleep Problems Index-6 (n=112, 111)Sleep problems Index-9 (n=111, 107)
Placebo46.4537.8720.666.4844.6132.3351.7242.98
Pregabalin35.7338.9214.716.3955.2534.6442.2035.43

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Medical Outcome Study Cognitive Subscale (MOS-Cog); Attention

The number of subjects' responses to each of the 6 questions on the Medical Outcome Study Cognitive (MOS-Cog) subscale were summarized at baseline and Week 8. Category range: all of the time to none of the time. No formal statistical modeling was used. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionparticipants (Number)
Baseline: All of the TimeBaseline: Most of the TimeBaseline: A Good Bit of TimeBaseline: Some of the TimeBaseline: A Little of the TimeBaseline: None of the TimeWeek 8: All of the TimeWeek 8: Most of the TimeWeek 8: A Good Bit of TimeWeek 8: Some of the TimeWeek 8: A Little of the TimeWeek 8: None of the Time
Placebo316142323475713263436
Pregabalin53132439424108223442

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Medical Outcome Study Cognitive Subscale (MOS-Cog); Concentration

The number of subjects' responses to each of the 6 questions on the Medical Outcome Study Cognitive (MOS-Cog) subscale were summarized at baseline and Week 8. Category range: all of the time to none of the time. No formal statistical modeling was used. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionparticipants (Number)
Baseline: All of the TimeBaseline: Most of the TimeBaseline: A Good Bit of the TimeBaseline: Some of the TimeBaseline: A Little of the TimeBaseline: None of the TimeWeek 8: All of the TimeWeek 8: Most of the TimeWeek 8: A Good Bit of the TimeWeek 8: Some of the TimeWeek 8: A Little of the TimeWeek 8: None of the Time
Placebo414142926397516273333
Pregabalin481327334131214262738

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Medical Outcome Study Cognitive Subscale (MOS-Cog); Confusion

The number of subjects' responses to each of the 6 questions on the Medical Outcome Study Cognitive (MOS-Cog) subscale were summarized at baseline and Week 8. Category range: all of the time to none of the time. No formal statistical modeling was used. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionparticpants (Number)
Baseline: All of the TimeBaseline: Most of the TimeBaseline: A Good Bit of the TimeBaseline: Some of the TimeBaseline: A Little of the TimeBaseline: None of the TimeWeek 8: All of the TimeWeek 8: Most of the TimeWeek 8: A Good Bit of the TimeWeek 8: Some of the TimeWeek 8: A Little of the TimeWeek 8: None of the Time
Placebo61271535513116232751
Pregabalin286222364199262252

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Medical Outcome Study Cognitive Subscale (MOS-Cog); Memory

The number of subjects' responses to each of the 6 questions on the Medical Outcome Study Cognitive (MOS-Cog) subscale were summarized at baseline and Week 8. Category range: all of the time to none of the time. No formal statistical modeling was used. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionparticipants (Number)
Baseline: All of the TimeBaseline: Most of the TimeBaseline: A Good Bit of the TimeBaseline: Some of the TimeBaseline: A Little of the TimeBaseline: None of the TimeWeek 8: All of the TimeWeek 8: Most of the TimeWeek 8: A Good Bit of TimeWeek 8: Some of the TimeWeek 8: A Little of the TimeWeek 8: None of the Time
Placebo101482333389711313528
Pregabalin77640303631113283629

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Medical Outcome Study Cognitive Subscale (MOS-Cog); Reasoning

The number of subjects' responses to each of the 6 questions on the Medical Outcome Study Cognitive (MOS-Cog) subscale were summarized at baseline and Week 8. Category range: all of the time to none of the time. No formal statistical modeling was used. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionparticipants (Number)
Baseline: All of the TimeBaseline: Most of the TimeBaseline: A Good Bit of the TimeBaseline: Some of the TimeBaseline: A Little of the TimeBaseline: None of the TimeWeek 8: All of the TimeWeek 8: Most of the TimeWeek 8: A Good Bit of the TimeWeek 8: Some of the TimeWeek 8: A Little of the TimeWeek 8: None of the Time
Placebo115152527434513273042
Pregabalin56520424831011233241

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Medical Outcome Study Cognitive Subscale (MOS-Cog); Thinking

The number of subjects' responses to each of the 6 questions on the Medical Outcome Study Cognitive (MOS-Cog) subscale were summarized at baseline and Week 8. Category range: all of the time to none of the time. No formal statistical modeling was used. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionparticipants (Number)
Baseline: All of the TimeBaseline: Most of the TimeBaseline: A Good Bit of TimeBaseline: Some of the TimeBaseline: A Little of the TimeBaseline: None of the TimeWeek 8: All of the TimeWeek 8: Most of the TimeWeek 8: A Good Bit of TimeWeek 8: Some of the TimeWeek 8: A Little of the TimeWeek 8: None of the Time
Placebo196273645696223147
Pregabalin2633133514612283139

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Weekly Mean Sleep Interference Score

11-point numerical scale with which the patient describes pain interference with sleep over past 24 hours; range: 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep). Endpoint weekly mean score: mean of last 7 available scores from daily sleep interference diary during double-blind treatment. (NCT00292188)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin2.93
Placebo3.73

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Neuropathic Pain Symptom Inventory (NPSI) Total Intensity Score

Neuropathic Pain Symptom Inventory (NPSI) includes 10 descriptors (scale 0-10) of different pain symptoms & 2 temporal items assessing the duration of spontaneous ongoing and paroxysmal pain. A total intensity score is calculated by sub grouping the questions into five pain dimensions, summing the five sub groups, and converting into a percentage. (NCT00292188)
Timeframe: Week 8

Interventionpercentage score on scale (Least Squares Mean)
Pregabalin33.29
Placebo37.12

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Medical Outcome Study (MOS) Optimal Sleep

Number of subjects responding to have had optimal sleep. Optimal sleep is 1 item in the Medical Outcome Study (MOS)sleep scale, a patient-reported measure consisting of twelve items that assess the key constructs of sleep. Subjects were asked to recall sleep-related activities over the past week. (NCT00292188)
Timeframe: Week 8

Interventionparticipants (Number)
Pregabalin58
Placebo45

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Davidson Trauma Scale (DTS): Total Score

Self-rated instrument to measure symptom severity and treatment outcome in post traumatic stress disorder (PTSD). Scale of 17 PTSD symptoms over previous week; frequency scale: 0 (not at all) to 4 (every day), and severity 0 (not at all distressing) to 4(extremely distressing). The total Davidson Trauma Scale score ranges from 0 to 136. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionscore on scale (Mean)
Baseline (n=116, 118)Week 8 (n=112, 113)
Placebo38.7633.62
Pregabalin34.5726.18

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Hospital Anxiety and Depression Scale (HADS) Depression Score - FAS Subset With Moderate/Severe Baseline Scores

Hospital Anxiety and Depression Scale (HADS-D) consists of 7 items that are assessed by a score of 0 = no depression to 3 = severe feeling of depression. The depression subscale focuses on the state of lost interest and diminished pleasure response (lowering of hedonic tone). Score range = 0 to 21; higher scores indicate a greater intensity of depression (NCT00292188)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin12.04
Placebo11.80

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Hospital Anxiety and Depression Scale (HADS) Depression Score

"Hospital Anxiety and Depression Scale Depression Score (HADS-D) consists of 7 items that are assessed by a score of 0 = no depression to 3 = severe feeling of depression. The depression subscale focuses on the state of lost interest and diminished pleasure response (lowering of hedonic tone). Score range = 0 to 21; higher scores indicate a greater intensity of depression" (NCT00292188)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Pregabalin5.23
Placebo6.20

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Davidson Trauma Scale (DTS): Frequency

Self-rated instrument to measure symptom severity and treatment outcome in post traumatic stress disorder (PTSD). Scale of 17 PTSD symptoms over previous week; frequency scale: 0 (not at all) to 4 (every day), and severity 0 (not at all distressing) to 4(extremely distressing). The total Davidson Trauma Scale score ranges from 0 to 136. (NCT00292188)
Timeframe: Baseline, Week 8

,
Interventionscore on scale (Mean)
Baseline (n=124, 124)Week 8 (n=118, 120)
Placebo20.9018.47
Pregabalin18.2714.16

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Improved Sleep Scores

Absolute Improvement in Sleep by assessing Mean Daily sleep interference scores as measured weekly starting at baseline and reported weekly through week 12 excluding the first week. This score is an 11 point scale the documents the pain interference in sleep in the preceding 24 hours. 0 is no interference and 10 is pain completely disrupted sleep in the previous 24 hours. During the study patients recorded a daily sleep interference score based on 11 point scale (0-10) with the higher number being the most sleep interference (NCT00310765)
Timeframe: Baseline and week 2 through week 12

,
Interventionunits on a scale (Mean)
baselineweek 2week 3week 4week 5week 6week 7week 8 open label no study medicationweek 9 open labelweek 10 open labelweek 11 open labelweek 12 open label
Placebo4.663.43.263.543.062.743.183.301.701.251.180.56
Pregabalin3.942.201.601.681.681.551.61.821.311.371.391.01

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Absolute Adhesional Abdominal Pain Score Assessed at Baseline Through Week 12 in Patients Treated With Pregabalin 150-300 mg Daily Compared With Patients Given Look Alike Placebo

Patients were randomized to pregabalin or placebo 75 mg twice a day. Patients were allowed to double the dose on day 3 if adequate pain relief was not obtained. Abdominal pain reduction was measured on a Likert scale. A Likert scale assumes the intensity of pain is linear on a continuum from no pain at level 0 to severe pain at level 10. Patients were required to complete a daily dairy recording pain using the Likert 11-point numeric scale. The primary end point was a positive change in the daily pain diary of 2 points from each patient's baseline at weeks 8 after the completion of the blinded study and at week 12 during the open label portion of the study. After 7 weeks all patients are randomized to study drug pregabalin 150 to 300 mg daily for 4 additional weeks after a one week wash out with no medication. (NCT00310765)
Timeframe: Baseline and week 2 through week 12

,
Interventionunits on a scale (Mean)
baseline pain scoreweek 2week 3week 4week 5week 6week 7week 8 open label with no study medicationweek 9 open labelweek 10 open labelweek 11 open labelweek 12 open label
Patients Treated With Placebo5.85.224.644.844.323.883.924.132.212.272.231.13
Patients Treated With Pregabalin6.152.871.883.312.722.492.532.462.061.841.461.68

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Euro Quality of Life (EQ-5D)- Health State Profile Utility Score

"EQ-5D: subject rated questionnaire to assess health-related quality of life in terms of a single utility score. Health State Profile component assesses level of current health for 5 domains: mobility, self-care, usual activities, pain and discomfort, and anxiety and depression; 1 indicates better health state (no problems); 3 indicates worst health state (eg, confined to bed). Scoring formula developed by EuroQol Group assigns a utility value for each domain in the profile. Score is transformed and results in a total score range -0.594 to 1.000; higher score indicates a better health state." (NCT00313820)
Timeframe: Week 12

Interventionscores on scale (Least Squares Mean)
Pregabalin0.5
Placebo0.5

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Quantitative Assessment of Neuropathic Pain (QANeP) - Sensory Threshold

"QANeP: assessment of sensory threshold: subject responds yes when monofilament stimulus is felt on area of maximum pain: 1 (lowest/softest 0.07 gram [g]) to 6 (highest 300 g) or 7 (not perceived); rated by lowest/softest filament felt when in contact with the skin. Summarized as change from baseline (mean at observation minus mean at baseline)." (NCT00313820)
Timeframe: Baseline, Week 12

Interventionscores on scale (Mean)
Pregabalin0.0
Placebo-0.1

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Short Form-McGill Pain Questionnaire (SF-MPQ Visual Analog Scale [VAS]) - Part B Only

SF-MPQ Part B VAS consists of a line 0 to 100 millimeters (mm) in length; range is (no pain) to 100 mm (worst possible pain). Subjects placed a mark indicating the intensity of their pain. Distance from left-hand end of line was measured and entered on Case Report Form (CRF) as score in mm. Higher score indicates greater level of pain. (NCT00313820)
Timeframe: Week 12

Interventionmillimeters (Least Squares Mean)
Pregabalin48.5
Placebo49.5

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Weekly Mean Sleep Interference Score From Daily Sleep Diary (Daily Sleep Interference Scale [DSIS])

DSIS: subject rated 11-point numeric scale ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep) during past 24-hour period. Higher score indicates a greater level of sleep disturbance. Self-assessment performed daily on awakening prior to taking study medication. Endpoint calculated as mean of last 7 available scores. (NCT00313820)
Timeframe: Week 1, Week 2, Week 3, Week 6, Week 9, and Week 12

,
Interventionscores on scale (Least Squares Mean)
Week 1 (n=108, 108)Week 2 (n=104, 106)Week 3 (n=102, 105)Week 6 (n=98, 102)Week 9 (n=98, 97)Week 12 (n=92, 92)Endpoint [Week 12 or ET] (n=108, 108)
Placebo4.24.03.93.73.43.23.1
Pregabalin3.63.53.23.03.03.13.0

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QANeP - Pain Rating Scales

Subject rated pain scale: static mechanical allodynia (SMA) gentle constant mechanical pressure; dynamic mechanical allodynia (DMA) gentle stroking with foam brush; punctate hyperalgesia (PH) pinprick; cold allodynia (CA) touch with cool metal rod 13-17° celsius (C); cold hyperalgesia (CH) touch with cold metal rod 4° C; temporal summation to tactile stimuli (TSTS) repeated touching/tapping. 11-point numeric scale; range 0 (no pain) to 10 (worst possible pain). Reference area=mirror image of pain site (test area). Summarized as change from baseline (mean at observation minus mean at baseline). (NCT00313820)
Timeframe: Baseline, Week 12

,
Interventionscores on scale (Mean)
SMA (n=108, 107)DMA (n=108, 107)PH reference area (n=108, 107)PH test area (n=108, 107)TSTS (n=108, 106)CA (n=108, 106)CH reference area (n=107, 107)CH test area (n=107, 106)
Placebo-0.5-0.6-0.2-0.0-0.5-0.3-0.2-0.9
Pregabalin-0.7-0.8-0.2-0.7-1.0-1.10.0-0.9

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Pain Score as Measured by DPRS

Weekly mean pain score measured by DPRS: subject rated 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain. Self-assessment performed daily on awakening prior to taking study medication. (NCT00313820)
Timeframe: Week 1, Week 2, Week 3, Week 6, Week 9, and Week 12

,
Interventionscores on scale (Least Squares Mean)
Week 1 (n=108, 108)Week 2 (n=104, 106)Week 3 (n=102, 105)Week 6 (n=97, 102)Week 9 (n=98, 97)Week 12 [ET] (n=92, 92)
Placebo6.05.85.65.45.24.9
Pregabalin5.65.35.14.94.84.7

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Medical Outcome Study (MOS) Sleep Scale

MOS: subject rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00313820)
Timeframe: Week 12

,
Interventionscores on scale (Least Squares Mean)
Sleep disturbance (n=100, 97)Snoring score (n=98, 97)Awaken SOB or headache (n=99, 97)Sleep quantity (100, 97)Sleep adequacy (n=99, 97)Somnolence (n=99, 97)Overall sleep problems index (n=100, 97)
Placebo31.932.915.06.658.937.832.4
Pregabalin27.140.611.37.067.539.928.2

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Neuropathic Pain Symptom Inventory (NPSI)

NPSI: subject rated questionnaire to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each of the relevant dimensions and a total score (0 to 100). Higher score indicates a greater intensity of pain. (NCT00313820)
Timeframe: Week 12

,
Interventionscores on scale (Least Squares Mean)
Burning Pain (n=108, 108)Pressing Pain (n=108, 107)Paroxysmal Pain (n=108, 108)Evoked Pain (n=108, 108)P/D (n=108, 108)Total Score (n=108, 107)
Placebo2.92.62.13.23.128.5
Pregabalin2.62.71.92.82.725.7

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Number of Subjects With at Least a 30% Reduction From Baseline in Mean Pain Score at Endpoint

30% Responder Yes = number of subjects with 30% reduction in mean pain score from baseline to observation; 30% reduction calculated as [(T minus B) divided by B multiplied by 100] < = negative 30. T = endpoint mean pain score (obtained from last 7 available scores from DPRS); B = baseline mean pain score (obtained from average of last 7 daily scores from DPRS). 30% Responder No indicates number of subjects that did not reach 30% reduction in mean pain score. (NCT00313820)
Timeframe: Baseline, Week 12

,
Interventionparticipants (Number)
30% Responders Yes30% Responders No
Placebo3573
Pregabalin4860

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Number of Subjects With Yes or No Response for Medical Outcome Study (MOS) Sleep Scale - Optimal Sleep

MOS: subject rated questionnaire to assess sleep quality and quantity. Optimal sleep component is derived from Sleep Quantity average hours of sleep each night during the past 4 weeks. Number of subjects with response = YES if sleep quantity is 7 or 8 hours per night or response = NO if sleep quantity is < 7 hours per night. (NCT00313820)
Timeframe: Week 12

,
Interventionparticipants (Number)
Optimal sleep = YesOptimal sleep = No
Placebo4255
Pregabalin5149

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Number of Subjects With at Least a 50% Reduction From Baseline in Mean Pain Score at Endpoint

50% Responder Yes = number of subjects with 50% reduction in mean pain score from baseline to observation; 50% reduction calculated as [(T minus B) divided by B multiplied by 100] < = negative 50. T = endpoint mean pain score (obtained from last 7 available scores from DPRS); B = baseline mean pain score (obtained from average of last 7 daily scores from DPRS). 50% Responder No indicates number of subjects that did not reach 50% reduction in mean pain score. (NCT00313820)
Timeframe: Baseline, Week 12

,
Interventionparticipants (Number)
50 % Responders Yes50 % Responders No
Placebo2286
Pregabalin2682

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Mean Pain Score at Endpoint as Measured by Daily Pain Rating Scale (DPRS)

Mean pain score obtained from last 7 available DPRS scores up to and including day of Week 12 visit or early termination (ET) equivalent. DPRS: subject rated 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain. Self-assessment performed daily on awakening prior to taking study medication. (NCT00313820)
Timeframe: Up to Week 12

Interventionscores on scale (Least Squares Mean)
Pregabalin4.8
Placebo5.0

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Patient Global Impression of Change (PGIC)

PGIC: subject rated instrument to measure subject's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). (NCT00313820)
Timeframe: Week 12

Interventionscores on scale (Least Squares Mean)
Pregabalin2.9
Placebo3.1

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EQ-5D - VAS

EQ-5D: subject rated questionnaire to assess health-related quality of life in terms of a single index value. The VAS component rates current health state on a scale from 0 (worst imaginable health state) to 100 (best imaginable health state); higher scores indicate a better health state. (NCT00313820)
Timeframe: Week 12

Interventionscores on scale (Least Squares Mean)
Pregabalin65.7
Placebo62.7

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Hospital Anxiety and Depression Scale (HADS) - ITT Population

HADS is subject rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT00313820)
Timeframe: Week 12

,
Interventionscores on scale (Least Squares Mean)
Week 12 [LOCF] Anxiety scoreWeek 12 [LOCF] Depression score
Placebo6.56.5
Pregabalin5.56.7

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Clinical Global Impression of Change (CGIC)

CGIC: clinician rated instrument that measures change in a subject's ovall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). (NCT00313820)
Timeframe: Week 12

Interventionscores on scale (Least Squares Mean)
Pregabalin2.8
Placebo3.1

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Change From Baseline in Weekly Mean Sleep Quality Score

Daily quality of sleep diary consists of 11-point NRS ranging from 0(best possible sleep) to 10(worst possible sleep). Participants rated their quality of sleep during past 24 hours, self-assessment done daily upon awakening. Baseline=Last 7 available scores before taking study medication up to and including Day 1. The weekly mean quality of sleep score was based on LS Means using mixed model repeated measures ANCOVA, with treatment, center, week, and treatment-by-week interaction in the model and the baseline mean sleep score used as the covariate. Weekly mean sleep quality score is defined as the mean of the last 7 daily sleep diary entries. (NCT00333866)
Timeframe: Baseline, Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14

,,,
InterventionUnits on a scale (Least Squares Mean)
Week 1 (n=183,179,174,178)Week 2 (n=180,172,168,174)Week 3 (n=174, 164, 159,163)Week 4 (n=165,157,155,156)Week 5 (n=163, 150, 152,148)Week 6 (n=159,145,148,144)Week 7 (n=155,140,144,133)Week 8 (n=149,133,142,127)Week 9 (n=146,128,141,126)Week 10 (n=144,125,139,126)Week 11 (n=143,123,137,121)Week 12 (n=141,121,135,119)Week 13 (n=140,120,133,118)Week 14 (n=134,115,128,111)Overall (n=183,179,174,178)
Placebo-0.38-0.62-0.75-0.73-0.82-0.84-0.91-0.99-1.11-1.14-1.09-1.22-1.05-1.08-0.91
Pregabalin 300 mg-1.20-1.48-1.42-1.52-1.67-1.56-1.50-1.60-1.64-1.75-1.65-1.62-1.66-1.73-1.57
Pregabalin 450 mg-1.08-1.43-1.56-1.67-1.69-1.76-1.83-1.95-1.94-2.03-1.92-1.95-1.93-1.95-1.76
Pregabalin 600 mg-1.23-1.59-1.90-2.01-1.99-2.15-2.20-2.25-2.24-2.34-2.24-2.29-2.26-2.29-2.07

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Change From Baseline in Short Form-36 (SF-36) Health Survey at Week 14

SF-36 is a standardized survey evaluating 8 aspects of functional health and well being: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role emotional and mental health. The score for a section is an average of the individual question scores, which are scaled 0-100 (100=highest level of functioning) and is reported as 2 summary scores; Physical Component Score and Mental Component Score. Total score range for the summary scores = 0- 100, where higher score represents higher level of functioning. (NCT00333866)
Timeframe: Baseline, Week 14

,,,
InterventionUnits on a scale (Least Squares Mean)
Physical Functioning (n=184,184,177,186)Physical Role Limitations (n=183,183,177,185)Emotional Role Limitations (n=183,183,177,185)Social Functioning (n=183,184,178,186)Mental Health (n=183,184,178,186)Bodily Pain (n=183,184,178,186)Vitality (n=183,184,178,186)General Health Perception (n=183,184,177,186)Mental Component Score (n=182,183,176,184)Physical Component Score (n=182,183,176,184)
Placebo4.644.01-2.310.75-1.674.954.150.94-1.272.47
Pregabalin 300 mg5.224.401.444.101.657.774.892.760.872.60
Pregabalin 450 mg6.635.503.935.764.2510.329.253.672.393.01
Pregabalin 600 mg4.135.031.563.602.417.537.292.211.352.34

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Change From Baseline in Medical Outcomes Study (MOS): Sub-scales at Week 14

Participant-rated 12 item questionnaire assess constructs of sleep over past week.7 subscales: sleep disturbance, snoring, awakened short of breath, sleep adequacy, somnolence (range:0-100); sleep quantity(range:0-24), optimal sleep(yes or no), as well as a 9-item overall sleep problems index. Except Adequacy, Optimal, Quantity of sleep, higher scores=more impairment. Scores transformed(actual raw score minus lowest possible score divided by possible raw score range*100);total score range:0-100,higher score=more intensity of attribute. (NCT00333866)
Timeframe: Baseline, Week 14

,,,
InterventionUnits on a scale (Least Squares Mean)
Sleep Disturbance (n=183,183,177,185)Snoring (n=172,174,174,177)Shortness of Breath, Headache (n=182,182,177,184)Quantity of Sleep (n=182,182,175,182)Sleep Adequacy (n=183,183,179,185)Somnolence (n=182,182,177,184)Overall Sleep Problem Index (n=181,181,174,184)
Placebo-5.99-0.03-0.670.417.62-0.10-4.83
Pregabalin 300 mg-13.181.17-9.620.6110.190.67-9.19
Pregabalin 450 mg-19.264.89-12.590.9116.760.61-13.07
Pregabalin 600 mg-18.705.87-9.910.7611.971.92-11.72

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Change From Baseline in Hospital Anxiety and Depression Scale (HADS) at Week 14

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT00333866)
Timeframe: Baseline, Week 14

,,,
InterventionUnits on a scale (Least Squares Mean)
HADS Anxiety (HADS-A) TotalHADS Depression (HADS-D) Total
Placebo-0.31-0.11
Pregabalin 300 mg-0.42-0.33
Pregabalin 450 mg-0.81-0.70
Pregabalin 600 mg-0.900.04

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) Subscale Scores at Week 14

FIQ: 20-item self-administered questionnaire designed to assess areas such as health status, progress, and outcomes in participants with fibromyalgia. 11 items related to physical functioning, other items assess pain, fatigue, stiffness, difficulty working, and symptoms of anxiousness and depression. FIQ contains 10 sub-scales scored from 0 to 10, with higher scores indicating more impairment in the subscale attribute. Total score range from 0 to 100 with higher scores indicating more impairment. (NCT00333866)
Timeframe: Baseline, Week 14

,,,
InterventionUnits on a scale (Least Squares Mean)
FIQ Physical Impairment (n=183,184,179,186)FIQ Feel Good (n=182,184,178,183)FIQ Work Missed (n=182,181,178,184)FIQ Do Work (n=182,183,179,185)FIQ Pain (n=183,184,179,185)FIQ Fatigue (n=183,184,179,184)FIQ Rested (n=183,184,179,185)FIQ Stiffness (n=183,184,179,185)FIQ Anxiety (n=183,184,179,185)FIQ Depression (n=181,184,179,184)
Placebo-0.09-1.15-0.13-0.90-0.97-0.81-0.94-1.06-0.48-0.22
Pregabalin 300 mg-0.26-1.11-0.29-1.04-1.18-0.86-1.17-1.02-0.66-0.56
Pregabalin 450 mg-0.35-1.77-0.75-1.60-1.72-1.36-1.47-1.28-1.12-1.19
Pregabalin 600 mg-0.26-1.26-0.27-0.98-1.10-1.05-1.40-0.94-0.68-0.43

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Percentage of Participants With Optimal Sleep Assessed Using MOS-SS

Participant-rated 12 item questionnaire assess constructs of sleep over past week.7 subscales: sleep disturbance, snoring, awakened short of breath, sleep adequacy, somnolence (range:0-100); sleep quantity(range:0-24), optimal sleep(yes or no), as well as a 9-item overall sleep problems index. Except Adequacy, Optimal, Quantity of sleep, higher scores=more impairment. Scores transformed(actual raw score minus lowest possible score divided by possible raw score range*100);total score range:0-100,higher score=more disturbance. (NCT00333866)
Timeframe: Baseline, Week 14

InterventionPercentage of participants (Number)
Placebo30.8
Pregabalin 300 mg33.5
Pregabalin 450 mg44.0
Pregabalin 600 mg32.4

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Change From Baseline in Pain Visual Analogue Scale (VAS) Scores at Week 14

Pain visual analog scale (VAS): Participants assessed the severity of their pain using a 100 mm visual analog scale (VAS). The scale ranged from 0 (no pain) to 100 (worst possible pain), measurement on a scale corresponds to the magnitude of their pain. (NCT00333866)
Timeframe: Baseline, Week 14

Interventionmm (Least Squares Mean)
Placebo-10.30
Pregabalin 300 mg-12.86
Pregabalin 450 mg-17.75
Pregabalin 600 mg-11.74

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Change From Baseline in Mean Sleep Quality Score at Endpoint (Up to Week 14)

Daily quality of sleep diary consists of 11-point NRS ranging from 0(best possible sleep) to 10(worst possible sleep). Participants rated their quality of sleep during past 24 hours, self-assessment done daily upon awakening. Baseline=Last 7 available scores before taking study medication up to and including Day 1. The endpoint (up to week 14) mean quality of sleep score was based on Least Squares (LS) Means using ANCOVA, with treatment group and center in the model and the baseline mean sleep score used as the covariate. Final weekly (endpoint) mean sleep quality score is defined as the mean sleep quality score from the last 7 sleep diary entries in the study while the participant was on study medication. (NCT00333866)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Placebo-0.94
Pregabalin 300 mg-1.42
Pregabalin 450 mg-1.72
Pregabalin 600 mg-1.95

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) Total Scores at Week 14

FIQ: 20-item self-administered questionnaire designed to assess areas such as health status, progress, and outcomes in participants with fibromyalgia. 11 items related to physical functioning, other items assess pain, fatigue, stiffness, difficulty working, and symptoms of anxiousness and depression. FIQ contains 10 sub-scales scored from 0 to 10, with higher scores indicating more impairment in the subscale attribute. Total score range from 0 to 100 with higher scores indicating more impairment. (NCT00333866)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Placebo-6.94
Pregabalin 300 mg-8.11
Pregabalin 450 mg-12.79
Pregabalin 600 mg-8.38

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Change From Baseline in Mean Pain Score at Endpoint (Up to Week 14)

Daily pain diary consists of 11-point NRS ranging from 0(no pain) to 10(worst possible pain). Participants rated their pain during past 24 hours, self-assessment done daily at awakening. Baseline=Last 7 available pain scores before taking study medication up to and including Day 1. Final weekly (endpoint) mean pain score is defined as the mean pain score from the last 7 pain diary entries in the study while the participant was on study medication. (NCT00333866)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Placebo-0.73
Pregabalin 300 mg-1.06
Pregabalin 450 mg-1.29
Pregabalin 600 mg-0.96

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Total Daily Acetaminophen Dose

Acetaminophen (up to 4 gram/day as needed for pain relief) was an allowable concomitant medication as a rescue therapy. The total daily acetaminophen dose taken during double-blind treatment was calculated for each participant as: (total acetaminophen dose during the study) divided by (total number of study days). (NCT00333866)
Timeframe: Week 14

Interventionmg/day (Least Squares Mean)
Placebo460.65
Pregabalin 300 mg449.14
Pregabalin 450 mg508.53
Pregabalin 600 mg724.42

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Change From Baseline in Multidimensional Assessment of Fatigue (MAF) at Week 14

MAF is a 16-item self-administered questionnaire that yields a Global Fatigue Index (GFI), measures 4 dimensions of fatigue: degree and severity, amount of distress it causes, its timing and degree to which fatigue interferes with activities of daily living. Only 15 items are used to calculate the GFI. GFI score range from 1 (no fatigue) to 50 (severe fatigue). (NCT00333866)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Placebo-1.91
Pregabalin 300 mg-2.78
Pregabalin 450 mg-3.32
Pregabalin 600 mg-2.19

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Patient Global Impression of Change (PGIC)

Number of participants with categorical change in overall status. PGIC: a participant-rated instrument assessing change in participant's overall status from baseline, on a scale ranging from 1 (very much improved) to 7 (very much worse). (NCT00333866)
Timeframe: Week 14

,,,
Interventionparticipants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Placebo743454311173
Pregabalin 300 mg134550289145
Pregabalin 450 mg16505527782
Pregabalin 600 mg2046412510103

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Change From Baseline to Week 12 in Pain Visual Analog Scale (VAS) Score

"Mean Change: Observation VAS score minus Baseline score. Pain VAS is a 100mm horizontal line used to rate (score) pain by subject from 0 no pain to 100 worst possible pain. Baseline=value @ double-blind screening if randomized to pregabalin during double-blind OR value @ last visit from double-blind if randomized to placebo during double-blind." (NCT00346034)
Timeframe: Week 12 (end of treatment)

Interventionmm (Mean)
Pregabalin-20.1

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Change From Baseline to Week 4 in Pain Visual Analog Scale (VAS) Score

"Mean Change: Observation VAS score minus Baseline score. Pain VAS: 100 mm horizontal line to rate (score) pain from 0 no pain to 100 worst possible pain. Baseline = value @ double-blind screening if randomized to pregabalin during double-blind or value @ last visit from double-blind if randomized to placebo during double-blind." (NCT00346034)
Timeframe: Week 4

Interventionmm (Mean)
Pregabalin-18.1

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Change From Baseline in Mean Deviation Score From Humphrey Threshold Test at Week 12 or Early Termination

Mean deviation (MD) is a global index of visual field depression. The MD ranges from 0 decibels (no defect) to about -32 decibels (end-stage damage), higher scores indicate worse condition. It is derived from the Humphrey 24-2 SITA standard visual field analyzer. Change in mean deviation score from baseline to Week 12 or termination was computed for each participant. As planned, for each participant, the worst eye (eye with the greatest decrease in mean deviation) was used in the analysis and data is reported for same. (NCT00351611)
Timeframe: Baseline, Week 12 or Early Termination (any time up to Week 12)

InterventionDecibels (Least Squares Mean)
Pregabalin-0.339
Placebo-0.214

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Change From Baseline in Visual Acuity at Week 12 or Early Termination

Visual acuity best-corrected (with glasses or best possible glasses prescription) was measured using early treatment diabetic retinopathy study (ETDRS) charts. There were 2 ETDRS charts. The letters on chart A were read using the right eye and on chart B using the left eye. The participants started from the top of the chart to down. The participants read down the chart until they reached a row where a minimum of 3 letters on a line could not be read. The participants were scored by number of letters identified correctly. Range was from 0 to 70, with higher scores indicate better visual acuity. As planned, for each participant, the worst eye (eye with the greatest decrease in visual acuity) was used in the analysis and data is reported for same. (NCT00351611)
Timeframe: Baseline, Week 12 or Early Termination (any time up to Week 12)

InterventionLetters identified correctly (Least Squares Mean)
Pregabalin-1.890
Placebo-0.990

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Percentage of Participants With a Decrease (p<0.05) From Baseline in Threshold Value in Any 5 or More Points in Humphrey 24-2 Swedish Interactive Threshold Algorithm (SITA) Standard Testing at Week 12 or Early Termination

In this primary outcome measure, percentage of participants is reported, with a decrease in the threshold value from baseline to Week 12 or termination in any 5 or more points (in either eye) at the p<0.05 level repeated in the same 5 points on subsequent computerized automated perimetry testing (Humphrey 24-2 SITA standard). It was derived from the Humphrey 24-2 SITA standard visual field analyzer. For each eye there were 52 test points. For each test point, the Humphrey analyzer determined the threshold value for sensitivity to light by the participant. In addition, for each of the 52 points, the test provided probabilities (p<0.05, p<0.02, etc.) that a participant with normal vision of the same age would have the same result, i.e., that the measured value at that point was at or below the respective percentile of the age-specific empiric distribution at that position of the field for normal participants. (NCT00351611)
Timeframe: Baseline, Week 12 or Early Termination (any time up to Week 12)

InterventionPercentage of participants (Number)
Pregabalin3.8
Placebo5.6

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Mean VAS Pain (Visual Analogue Scale)at Rest (0-100 mm)

The visual analogue scale (VAS) was used for registration of the pain intensity at rest. The score ranges from 0-100, where 0 means no pain and 100 means maximal pain. Higher values represent a worse outcome. (NCT00353704)
Timeframe: 120 minutes after surgery

InterventionUnits on a scale (Mean)
Pregabalin11.7
Placebo22.5

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Morphine (Opioid) Consumption Cumulated

"Patients were equipped with a morphine PCA (patient controlled analgesia) for 24 hours after surgery. So they could administrate morphine intravenously by pressing a button. The sum of morphine was registered as cumulated opioid consumption (milligram)" (NCT00353704)
Timeframe: 240 minutes

Interventionmg (Mean)
Pregabalin7.3
Placebo16.0

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Mean Change From Baseline in Digit Symbol Substitution Test (DSST) Scores

DSST: subject-rated; evaluates aspects of cognition (includes attending to directions, processing speed, sustained attention, visual-motor integration, learning and psychomotor speed). Subject matches symbol (1 to 9) with corresponding number key (1 to 9); number of correct symbol-number pairs completed by subject over a 90-second test period determines DSST score. Change: mean at observation minus mean at baseline. Data summarized as change from baseline to endpoint. (NCT00368745)
Timeframe: Baseline, Endpoint (AF Week 6 )

Interventionscores on scale (Least Squares Mean)
Pregabalin 75 mg to 300 mg PO BID13.10
Placebo 75 mg to 300 mg PO BID13.47

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Number of Subjects at Endpoint (Post Alprazolam Free Week 6 or Last Observation Carried Forward [LOCF] Post Alprazolam Free Week 1) Who Are Benzodiazepine Free

Number of subjects benzodiazepine free: < 2 doses rescue medication; negative urine benzodiazepine psychoactive toxicology assay (each visit Alprazolam Free phase); negative serum benzodiazepine alcohol assay (endpoint or LOCF). (NCT00368745)
Timeframe: Endpoint (Post Alprazolam Free Week 6 or LOCF Post Alprazolam Free Week 1)

Interventionparticipants (Number)
Pregabalin 75 mg to 300 mg PO BID20
Placebo 75 mg to 300 mg PO BID10

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Number of Subjects in Relapse Free State at 6-week Benzodiazepine-free Endpoint (Alprazolam Free Week 6)

Number of subjects benzodiazepine free: < 2 doses rescue medication; negative urine toxicology assay (each visit Alprazolam Free phase), negative urine alcohol assay (Alprazolam Free Week 6 = endpoint or LOCF). Relapse: > = 2 intakes rescue medication, positive urine and /or alcohol assays, unable to tolerate alprazolam taper, or discontinuation. (NCT00368745)
Timeframe: Alprazolam Free Week 6

Interventionparticipants (Number)
Pregabalin 75 mg to 300 mg PO BID21
Placebo 75 mg to 300 mg PO BID12

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Time to Discontinuation

The 25th percentile estimate of time until discontinuation is based on Kaplan-Meier estimates. Event day is the study day when the subject discontinued from study. (NCT00368745)
Timeframe: Baseline, Week 13 (Final Visit/Early Termination)

Interventiondays (Number)
Pregabalin 75 mg to 300 mg PO BID51
Placebo 75 mg to 300 mg PO BID33

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Time to First Use of Rescue Medication

The 25th percentile estimate of time until first use of rescue medication is based on Kaplan-Meier estimates. Event day is the study day when the subject first used rescue medication. Rescue medication: packet with 2 doses alprazolam to take only in the event subject experiences severe symptoms of benzodiazepine withdrawal or rebound anxiety. (NCT00368745)
Timeframe: Baseline, Week 13 (Final Visit/Early Termination)

Interventiondays (Number)
Pregabalin 75 mg to 300 mg PO BID63
Placebo 75 mg to 300 mg PO BID30

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Mean Change From Baseline in Clinical Global Impression Severity (CGI-S) Scale Scores.

CGI-S: 7-point scale to assess global change in subject condition compared to baseline; range 1 (no evidence of illness) to 7 (among the most severely ill); higher score = more affected. Change from baseline: mean at observation minus mean at baseline. (NCT00368745)
Timeframe: Baseline, Alprazolam Taper Weeks 1 through 6, Alprazolam Free Weeks 1 through 6, and Endpoint (AF Week 6 )

,
Interventionscores on scale (Least Squares Mean)
Alprazolam Taper (AT) Week 1 (n=45, 40)AT Week 2 (n=44, 37)AT Week 3 (n=32, 27)AT Week 4 (n=17, 11)AT Week 5 (n=7, 5)AT Week 6 (n=16, 9)Alprazolam Free (AF) Week 1 (n=38, 28)AF Week 2 (n=34, 24)AF Week 3 (n=30, 26)AF Week 4 (n=30, 19)AF Week 5 (n=26, 18)AF Week 6 (n=21, 15)Endpoint [LOCF] (n=45, 41)
Placebo 75 mg to 300 mg PO BID0.220.41-0.10-0.04-0.050.080.23-0.48-0.32-0.84-0.75-1.020.31
Pregabalin 75 mg to 300 mg PO BID-0.23-0.33-0.60-0.41-0.77-0.63-0.46-0.98-0.88-0.87-0.82-1.33-0.45

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Mean Change From Baseline in Hamilton Anxiety Scale (HAM-A) Scores

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); lower score indicates less affected. Change from baseline: mean at observation minus mean at baseline. (NCT00368745)
Timeframe: Baseline, Alprazolam Taper Weeks 1 through 6, Alprazolam Free Weeks 1 through 6, and Endpoint (Alprazolam Free [AF] Week 6)

,
Interventionscores on scale (Least Squares Mean)
Alprazolam Taper (AT) Week 1 (n=46, 40)AT Week 2 (n=45, 37)AT Week 3 (n=33, 26)AT Week 4 (n=18, 11)AT Week 5 (n=8, 5)AT Week 6 (n=17, 9)Alprazolam Free (AF) Week 1 (n=39, 28)AF Week 2 (n=35, 24)AF Week 3 (n=31, 26)AF Week 4 (n=31, 19)AF Week 5 (n=27, 18)AF Week 6 (n=22, 15)Endpoint [LOCF] (n=46, 41)
Placebo 75 mg to 300 mg PO BID0.672.17-0.211.912.862.412.40-1.14-2.47-3.58-3.34-4.772.77
Pregabalin 75 mg to 300 mg PO BID-0.82-1.72-2.59-1.47-2.36-1.26-0.43-2.15-3.46-3.58-3.85-5.62-2.01

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Mean Scores for Clinical Global Impression-Improvement (CGI-I) Scale

CGI-I: 7-point scale to assess global change in subject condition compared to baseline; range 1 (very much improved) to 7 (very much worse); higher score = more affected. (NCT00368745)
Timeframe: Alprazolam Taper Weeks 1 through 6, Alprazolam Free Weeks 1 through 6, and Endpoint (AF Week 6 )

,
Interventionscores on scale (Least Squares Mean)
Alprazolam Taper (AT) Week 1 (n=46, 39)AT Week 2 (n=45, 37)AT Week 3 (n=33, 27)AT Week 4 (n=18, 11)AT Week 5 (n=8, 5)AT Week 6 (n=17, 9)Alprazolam Free (AF) Week 1 (n=39, 28)AF Week 2 (n=35, 24)AF Week 3 (n=30, 26)AF Week 4 (n=31, 19)AF Week 5 (n=27, 18)AF Week 6 (n=22, 15)Endpoint [LOCF] (n= 46, 41)
Placebo 75 mg to 300 mg PO BID3.903.983.473.013.443.863.903.272.932.462.772.183.52
Pregabalin 75 mg to 300 mg PO BID3.523.172.883.092.633.002.932.392.152.202.291.522.57

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Mean Scores for Patient Global Impression-Improvement (PGI-I)

PGI-I: subject rated 7-point scale measures change in overall status; range 1 (very much improved) to 7 (very much worse). (NCT00368745)
Timeframe: Alprazolam Taper Weeks 1 through 6, Alprazolam Free Weeks 1 through 6, and Endpoint (AF Week 6 )

,
Interventionscores on scale (Least Squares Mean)
Alprazolam Taper (AT) Week 1 (n=46, 40)AT Week 2 (n= 45, 37)AT Week 3 (n=33, 26)AT Week 4 (n=18, 11)AT Week 5 (n=8, 5)AT Week 6 (n=17, 9)Alprazolam Free (AF) Week 1 (n=39, 28)AF Week 2 (n=35, 24)AF Week 3 (n=31, 26)AF Week 4 (n=30, 19)AF Week 5 (n=27, 18)AF Week 6 (n=22, 14)Endpoint [LOCF] (n=46, 41)
Placebo 75 mg to 300 mg PO BID3.824.033.312.983.753.383.452.942.922.732.702.483.74
Pregabalin 75 mg to 300 mg PO BID3.163.132.933.122.912.932.952.342.282.432.321.532.71

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Mean Scores Physician's Withdrawal Checklist (PWC)

Mean scores at each visit for PWC: 20-item physician-rated interview measures presence of anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception, and cognition); range 0 (not present) to 3 (severe). Total score: 0 to 60; higher score = more affected. Mean scores entered as post-hoc analysis as Mean change from baseline in PWS scores not analyzed: PWS not measured at baseline. (NCT00368745)
Timeframe: Baseline, Alprazolam Taper Weeks 1 through 6, Alprazolam Free Weeks 1 through 6, Endpoint (AF Week 6 )

,
Interventionscores on scale (Least Squares Mean)
Alprazolam Taper (AT) Week 1 (n=43, 40)AT Week 2 (n=44,37)AT Week 3 (n=33, 26)AT Week 4 (n=18, 11)AT Week 5 (n=7, 5)AT Week 6 (n=17, 9)Alprazolam Free (AF) Week 1 (n=39, 28)AF Week 2 (n=33, 24)AF Week 3 (n=30, 26)AF Week 4 (n=30, 19)AF Week 5 (n=27, 18)AF Week 6 (n=22, 15)Endpoint [LOCF] (n=46, 41)
Placebo 75 mg to 300 mg PO BID8.5010.009.419.049.5812.5510.706.437.166.998.255.5110.28
Pregabalin 75 mg to 300 mg PO BID6.326.376.565.637.306.826.784.716.867.437.872.406.48

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Mean Number of Seizures

Seizures were episodes of disturbed brain activity that cause changes in attention or behavior. The different types of seizures observed were complex partial, secondarily generalized tonic-clonic, simple partial and others. Mean number of seizures were calculated between each study visit. (NCT00372528)
Timeframe: Month 6 thereafter every 6 months up to Month 54 or End of Study (EOS) and follow-up (30 days after last dose)

InterventionSeizures (Mean)
Month 6 to Month 12 (n = 20)Month 12 to Month 18 (n = 18)Month 18 to Month 24 (n = 19)Month 24 to Month 30 (n = 18)Month 30 to Month 36 (n = 18)Month 36 to Month 42 (n = 17)Month 42 to Month 48 (n = 11)Month 54 or EOS (n = 19)Follow-up (n = 14)
Pregabalin35.1029.7027.8032.5029.3028.7024.8022.906.40

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Number of Participants With Treatment-Emergent Adverse Events (AEs) or Serious Adverse Events (SAEs)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pretreatment state. (NCT00372528)
Timeframe: Baseline up to Year 5 and follow-up (30 days after last dose)

InterventionParticipants (Number)
AEsSAEs
Pregabalin213

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Duration Adjusted Average Change (DAAC) of Paresthesia From the Onset of Chemotherapy Measured by Numeric Rating Scale (NRS)

Least squares mean of change: mean at cycle minus mean at Baseline. Paresthetic duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of paresthesia (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint is defined as the Area Under Curve (AUC) of the collected NRS over time, divided by the collection time period (up to 10 days). (NCT00380874)
Timeframe: Period of 10 days from the onset of chemotherapy to the last cycle: Last Observation Carried Forward (LOCF)

Interventionscore on scale (Least Squares Mean)
Pregabalin1.11
Placebo1.27

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Number of Participants With Persistent Paresthesic, Dysesthesic, and Pain Symptoms

Number of participants with persistent paresthesic, dyesthesic, and pain symptoms at chemotherapy Cycle 9 and last observation carried forward (LOCF) endpoint. Numeric rating scale of symptoms: >=1: mild symptoms to >=4: moderate severe symptoms. Subjects rated their average severity of symptoms over the last 24 hours every evening before bedtime. (NCT00380874)
Timeframe: Cycle 9 and Last Observation Carried Forward (LOCF) cycle endpoint

,
Interventionparticipants (Number)
Paresthesia Cycle 9 (n=19,19) (>or=1)Paresthesia LOCF endpoint (n=30,29) (>or=1)Paresthesia Cycle 9 (n=19,19) (>or=2)Paresthesia LOCF endpoint (n=30,29) (>or=2)Paresthesia Cycle 9 (n=19,19) (>or=3)Paresthesia LOCF endpoint (n=30,29) (>or=3)Paresthesia Cycle 9 (n=19,19) (>or=4)Paresthesia LOCF endpoint (n=30,29) (>or=4)Dysesthesia Cycle 9 (n=19,19) (>or=1)Dysesthesia LOCF endpoint (n=30,29) (>or=1)Dysesthesia Cycle 9 (n=19,19) (>or=2)Dysesthesia LOCF endpoint (n=30,29) (>or=2)Dysesthesia Cycle 9 (n=19,19) (>or=3)Dysesthesia LOCF endpoint (n=30,29) (>or=3)Dysesthesia Cycle 9 (n=19,19) (>or=4)Dysesthesia LOCF endpoint (n=30,29 (>or=4)Pain Cycle 9 (n=19,19) (>or=1)Pain LOCF endpoint (n=30,29;) (>or=1)Pain Cycle 9 (n=19,19) (>or=2)Pain LOCF endpoint (n=30,29) (>or=2)Pain Cycle 9 (n=19,19) (>or=3)Pain LOCF endpoint (n=30,29) (>or=3)Pain Cycle 9 (n=19,19) (>or=4)Pain LOCF endpoint (n=30,29) (>or=4)
Placebo673311114534121223121212
Pregabalin78452312101156341266221100

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Duration Adjusted Average Change (DAAC) of Paresthesic Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)

Least squares mean of change: mean at cycle minus mean at Baseline. Paresthetic Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of paresthesia (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint is defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days). (NCT00380874)
Timeframe: Baseline to Cycle 9

,
Interventionscore on scale (Least Squares Mean)
Cycle 1 (n=25, 27)Cycle 2 (n=26, 26)Cycle 3 (n=24, 23)Cycle 4 (n=25, 23)Cycle 5 (n=24, 22)Cycle 6 (n=21, 21)Cycle 7 (n=17, 22)Cycle 8 (n=16, 19)Cycle 9 (n=16, 18)
Placebo0.130.220.370.400.530.640.961.031.65
Pregabalin0.030.350.530.641.030.740.930.830.92

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Duration Adjusted Average Change (DAAC) of Pain Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)

Least squares (LS) mean of change: mean at cycle minus mean at Baseline. Pain Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of pain (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint was defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days). (NCT00380874)
Timeframe: Baseline to Cycle 9, LOCF cycle endpoint

,
Interventionscore on scale (Least Squares Mean)
Cycle 1 (n=25,27)Cycle 2 (n=25,26)Cycle 3 (n=23,23)Cycle 4 (n=25,23)Cycle 5 (n=24,22)Cycle 6 (n=21,21)Cycle 7 (17,22)Cycle 8 (n=16,19)Cycle 9 (n=16, 18)LOCF endpoint (n=26, 27)
Placebo0.070.160.260.270.310.580.600.600.970.78
Pregabalin0.020.290.470.620.850.540.920.920.860.65

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Duration Adjusted Average Change (DAAC) of Dysesthesia Symptom Score Within Each Cycle of Chemotherapy Measured by Numeric Rating Scale (NRS)

Least squares (LS) mean of change: mean at cycle minus mean at Baseline. Dysesthesic Duration Adjusted Average Change (DAAC) endpoint was computed based on Numeric Rating Scale (NRS) of dysesthesis (collected 0=no pain; 1-3=mild pain; 4-6=moderate pain; 7-10=severe pain). DAAC endpoint was defined as the Area Under Curve (AUC) of the collected NRS over time, divided by collection time period (up to 10 days). (NCT00380874)
Timeframe: Baseline to Cycle 9, LOCF cycle endpoint

,
Interventionscore on scale (Least Squares Mean)
Cycle 1 (n=25,27)Cycle 2 (n=26,26)Cycle 3 (n=24,23)Cycle 4 (n=25,23)Cycle 5 (n=24,22)Cycle 6 (n=21,21)Cycle 7 (n=17,22)Cycle 8 (n=16,19)Cycle 9 (n=16, 18)LOCF endpoint (n=26, 27)
Placebo0.130.380.650.710.800.931.171.061.751.33
Pregabalin0.090.750.911.011.540.881.171.331.241.36

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Change in Pain Scores Rated on Neuropathic Pain Symptom Inventory (NPSI) Subscales From Baseline Cycle

Least squares (LS) mean of change: mean at cycle minus mean at Baseline. Neuropathic Pain Symptom Inventory (NPSI) = questionnaire designed to evaluate symptoms of neuropathic pain. 11-point numeric rating scale, range: 0 (no pain) to 10 (worst pain imaginable) best describing their average pain for last 24 hours. (NCT00380874)
Timeframe: Baseline to Cycle 9, Last Observation Carried Forward (LOCF) cycle endpoint

,
Interventionscore on scale (Least Squares Mean)
Burning spontaneous pain Cycle 3 (n=27,27)Burning spontaneous pain Cycle 4 (n=28,23)Burning spontaneous pain Cycle 5 (n=26,24)Burning spontaneous pain Cycle 6 (n=24,24)Burning spontaneous pain Cycle 7 (n=21,23)Burning spontaneous pain Cycle 8 (n=19,21)Burning spontaneous pain Cycle 9 (n=19,20)Burning spontaneous pain LOCF endpoint (n=29,27)Pressing spontaneous pain Cycle 2 (n=28,27)Pressing spontaneous pain Cycle 3 (n=28,24)Pressing spontaneous pain Cycle 4 (n=28,23)Pressing spontaneous pain Cycle 5 (n=26,24)Pressing spontaneous pain Cycle 6 (n=24,24)Pressing spontaneous pain Cycle 7 (n=32,29)Pressing spontaneous pain Cycle 8 (n=19,21)Pressing spontaneous pain Cycle 9 (n=19,20Pressing spontaneous pain LOCF endpoint (n=29,27)Paroxysmal pain Cycle 3 (n=27,24)Paroxysmal pain Cycle 4 (n=28,24)Paroxysmal pain Cycle 5 (n=25,24)Paroxysmal pain Cycle 6 (n=22,23)Paroxysmal pain Cycle 7(n=19,23)Paroxysmal pain Cycle 8 (n=18,21)Paroxysmal pain Cycle 9 (n=18,20)Paroxysmal pain LOCF endpoint (n=28,27)Evoke pain Cycle 2 (n=28,27)Evoke pain Cycle 3 (n=28,23)Evoke pain Cycle 4 (n=28,24)Evoke pain Cycle 5 (n=26,24)Evoke pain Cycle 6 (n=24,24)Evoke pain Cycle 7 (n=21,22)Evoke pain Cycle 8 (n=19,20)Evoke pain Cycle 9 (n=19,20)Evoke pain LOCF endpoint (n=29,27)Paresthesia/dysesthesia pain Cycle 2 (n=28,27)Paresthesia/dysesthesia pain Cycle 3(n=28,23)Paresthesia/dysesthesia pain Cycle 4 (n=28,24)Paresthesia/dysesthesia pain Cycle 5(n=26,24)Paresthesia/dysesthesia pain Cycle 6 (n=24,23)Paresthesia/dysesthesia pain Cycle 7 (n=21,22)Paresthesia/dysesthesia pain Cycle 8 (n=19,21)Paresthesia/dyesthesia pain Cycle 9 (n=18,20)Paresthesia/dyesthesia pain LOCF endpt (n=29,27)Total Score Cycle 2 (n=27,27)Total Score Cycle 3 (n=27,24)Total Score Cycle 4(n=27,23)Total Score Cycle 5 (n=25,24)Total Score Cycle 6(n=22,23)Total Score Cycle 7 (n=18,23)Total Score Cycle 8(n=18,20)Total Score Cycle 9 (n=17,20)Total Score Cycle LOCF Endpoint (n=28,27)
Placebo-0.020.150.190.140.400.230.590.350.050.010.200.060.090.300.120.140.080.020.130.0170.210.350.320.380.200.040.070.280.290.660.400.360.590.43-0.000.140.060.200.320.480.580.850.520.000.000.010.010.020.020.020.030.02
Pregabalin0.090.020.060.280.420.530.540.33-0.010.050.030.060.090.260.390.250.150.000.060.060.080.360.630.180.110.040.170.150.180.490.991.050.740.469.250.340.430.600.680.781.091.170.830.000.010.010.010.020.030.040.030.02

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DAAC From Baseline in Daily Worst Pain, Day 1 to End of Dose Adjustment

DAAC from baseline in the daily worst pain based on the NRS Worst Pain at Reference Site score collected from participant's daily diary. Pain rated on an 11 point scale ranged from 0 (no pain) to 10 (worst possible pain). DAAC defined as AUC of daily worst pain score divided by pain measurement duration. Change was week x minus baseline. (NCT00381095)
Timeframe: Baseline, Day 1 to End of Dose Adjustment or ET

InterventionUnits on a scale (Mean)
Pregabalin-0.72
Placebo-0.53

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DAAC From Baseline in Daily Worst Pain, Days 1 Through 28

DAAC from baseline in the daily worst pain based on the NRS Worst Pain at Reference Site score collected from participant's daily diary. Pain rated on an 11 point scale ranged from 0 (no pain) to 10 (worst possible pain). DAAC defined as AUC of daily worst pain score divided by pain measurement duration. Change was week x minus baseline. (NCT00381095)
Timeframe: Baseline, Days 1 through 28 or ET

InterventionUnits on a scale (Mean)
Pregabalin-1.27
Placebo-1.03

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Change From Baseline in Hospital Anxiety and Depression Scale (HADS) at Week 4

HADS: participant rated questionnaire with 2 subscales. HADS-Anxiety assessed generalized anxiety (anxious mood/ restlessness/ anxious thoughts/panic attacks); HADS-Depression assessed lost interest/diminished pleasure response (lowering of hedonic tone). Each subscale has 7 items which ranged from 0 (no presence of anxiety or depression) to 3 (severe feeling anxiety/depression). Total 0-21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. Change was week x minus baseline. (NCT00381095)
Timeframe: Baseline, Week 4 or ET

,
InterventionUnits on a scale (Mean)
Anxiety Baseline (n= 72, 78)Anxiety Change at Week 4 (n= 60, 60)Anxiety Change at Week 4/LOCF (n=64, 65)Depression Baseline (n= 72, 78)Depression Change at Week 4 (n= 60, 60)Depression Change at Week 4/LOCF (n=64, 65)
Placebo11.600.800.7110.15-0.57-0.57
Pregabalin11.610.980.809.330.200.22

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Change From Baseline in mBPI-sf Interference Index Score at Week 4

m-BPI-sf: participant-rated 11 point Likert rating scale ranging from 0 (does not interfere) to 10 (completely intereres) with functional activities (general activity, mood, walking ability, relations with other people, sleep, normal work, and enjoyment of life) in past 24 hours. Change was score at each observation minus baseline score. (NCT00381095)
Timeframe: Baseline, Week 4 or ET

,
InterventionUnits on a scale (Mean)
Baseline (n=71, 76)Change at Week 4 (n=59, 58)Change at Week 4/LOCF(n=64, 62)
Placebo5.27-1.50-1.48
Pregabalin4.92-1.83-1.66

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Change From Baseline in Modified Brief Pain Inventory (mBPI-sf) Pain Severity Index Score at Week 4

m-BPI-sf: participant rated 11-point Likert rating scale ranging from 0 (no pain) to 10 (worst pain possible). Pain severity index was the mean of item scores 1, 2, 3, and 4 (worst, least, average and current pain scores). Change was scores at observation minus scores at baseline. (NCT00381095)
Timeframe: Baseline, Week 4 or ET

,
InterventionUnits on a scale (Mean)
Baseline (n=71, 77)Change at Week 4 (n=59, 59)Change at Week 4/LOCF (n=64, 63)
Placebo5.03-1.41-1.35
Pregabalin5.18-2.06-1.94

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Patient Global Impression of Change (PGIC)

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). (NCT00381095)
Timeframe: Weeks 2 and 4 or ET

,
InterventionUnits on a scale (Mean)
Week 2 (n=66,68)Week 4 (n=59, 60)LOCF/ET (n=69, 74)
Placebo3.092.872.99
Pregabalin2.972.732.88

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DAAC From Baseline in Daily Worst Pain 14 Days After Fixed Dosing Date Up to Day 28

DAAC from baseline in the daily worst pain based on the NRS Worst Pain at Reference Site score collected from participant's daily diary 14 days after dosing stabilized (fixed dosing date) up to Day 28. Pain rated on an 11 point scale ranged from 0 (no pain) to 10 (worst possible pain). DAAC defined as AUC of daily worst pain score divided by pain measurement duration. Change was week x minus baseline. (NCT00381095)
Timeframe: Baseline, 14 Days After Fixed Dosing Date up to Day 28 or ET

InterventionUnits on a scale (Mean)
Pregabalin-1.47
Placebo-1.15

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Duration Adjusted Average Change (DAAC) From Baseline in Daily Worst Pain, Fixed Dosing Date to Day 28

DAAC from baseline based on Numeric Rating Scale (NRS) score for Worst Pain at Reference site from the last day dose adjustment was needed (fixed dosing date) to day 28. DAAC defined as area under the curve (AUC) of change in worst pain divided by pain measurement duration. Pain rated on an 11 point scale ranged from 0 (no pain) to 10 (worst possible pain). Change was week x minus baseline. (NCT00381095)
Timeframe: Baseline, Fixed Dosing Date to Day 28 or Early Termination (ET)

,
InterventionUnits on a scale (Mean)
Baseline (n=72, 79)Change at Day 28 (n=72, 77)
Placebo6.47-1.23
Pregabalin6.28-1.53

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Number of Participants With Treatment-Emergent Elevated Heart Rate

Elevated heart rate: >=100 beats per minute (bpm) + an increase of >=10 bpm if baseline <100 bpm. (NCT00385671)
Timeframe: baseline through 12 weeks

Interventionparticipants (Number)
Pregabalin2
Duloxetine9
Gabapentin + Duloxetine6

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Number of Participants With a ≥ 2-points Reduction on the Weekly Average of the Daily 24-hour Average Pain Scale at 12 Weeks

This is a nominal outcome reflecting whether or not a clinically-important efficacy outcome was achieved at endpoint. It is based on a comparison between baseline and endpoint scores on an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Used were the weekly mean of the scores of the average pain severity over the last 24 hours. The weekly averages were based on daily assessments recorded by patients in their diaries. (NCT00385671)
Timeframe: baseline, 12 weeks

Interventionparticipants (Number)
Pregabalin59
Duloxetine64
Gabapentin + Duloxetine68

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Number of Participants With ≥ 30% Reduction in the Weekly Mean 24 Hour Average Pain Score at 12 Weeks

This is a nominal outcome reflecting whether or not a clinically-important efficacy outcome was achieved at endpoint. It is based on a comparison between baseline and endpoint scores on an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Used were the weekly mean of the scores of the average pain severity over the last 24 hours. The weekly averages were based on daily assessments recorded by patients in their diaries. (NCT00385671)
Timeframe: baseline, 12 weeks

Interventionparticipants (Number)
Pregabalin65
Duloxetine68
Gabapentin + Duloxetine72

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Mean Change From Baseline to 12 Weeks in Weekly Mean of the Daily Worst Pain Severity Score

This is an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Data presented represent the weekly mean of the scores of the daily worst pain severity over the last 24 hours. Scores are based on daily assessments recorded by patients in their diaries. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.59
Duloxetine-3.08
Gabapentin + Duloxetine-2.86

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Mean Change From Baseline to 12 Weeks in Weekly Mean of Nighttime Pain Severity

This is an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Data presented represent the weekly mean of the scores of the daily nighttime pain severity over the last 24 hours. Scores are based on daily assessments recorded by patients in their diaries. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.30
Duloxetine-2.71
Gabapentin + Duloxetine-2.49

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Mean Change From Baseline to 12 Weeks in Weekly Mean of Daily 24 Hour Average Pain Score, Pregabalin Compared With Duloxetine

This is an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Data presented represent the weekly mean of the scores of the average pain severity over the last 24 hours. Scores are based on daily assessments recorded by patients in their diaries. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.12
Duloxetine-2.62

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Mean Change From Baseline to 12 Weeks in Weekly Mean of Daily 24 Hour Average Pain Score, Duloxetine Compared With Duloxetine+Gabapentin

This is an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Data presented represent the weekly mean of the scores of the average pain severity over the last 24 hours. Scores are based on daily assessments recorded by patients in their diaries. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

Interventionunits on a scale (Least Squares Mean)
Gabapentin + Duloxetine-2.39
Duloxetine-2.62

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Mean Change From Baseline to 12 Weeks in Heart Rate

Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline through 12 weeks

Interventionbeats per minute (Least Squares Mean)
Pregabalin-1.30
Duloxetine0.80
Gabapentin + Duloxetine1.05

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Mean Change From Baseline to 12 Weeks in Body Weight

Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline through 12 weeks

Interventionkilogram (Least Squares Mean)
Pregabalin1.00
Duloxetine-2.39
Gabapentin + Duloxetine-1.06

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Time to First ≥ 30% Reduction in Weekly Mean 24 Hour Average Pain Score

This is the number of days required to first achieve a nominal outcome reflecting whether or not a clinically-important efficacy outcome was achieved. It is based on a comparison between baseline and post-baseline scores on an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Used were the weekly mean of the scores of the average pain severity over the last 24 hours. The weekly averages were based on daily assessments recorded by patients in their diaries. (NCT00385671)
Timeframe: baseline through 12 weeks

Interventiondays (Median)
Pregabalin35.0
Duloxetine28.0
Gabapentin + Duloxetine28.0

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Normal Work

A self-reported scale that measures the interference of pain in the past 24 hours on normal work. The Interference scores range from 0 (does not interfere) to 10 (completely interferes). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine4.98-1.86
Gabapentin + Duloxetine5.15-1.88
Pregabalin4.61-1.63

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Mean Change From Baseline to 12 Weeks in Beck Depression Inventory II (BDI-II) Total Score

A 21-item, patient-completed questionnaire to assess characteristics of depression. Each of the 21 items corresponding to a symptom of depression is summed to give a single score. There is a four-point scale for each item ranging from 0 to 3. Total score of 0-13 is considered minimal range, 14-19 is mild, 20-28 is moderate, and 29-63 is severe. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.57
Duloxetine-3.13
Gabapentin + Duloxetine-2.54

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Weekly Mean Change in 24 Hour Average Pain Severity by Week by Gabapentin Exposure Subgroup (de Novo Versus Prior Use)

This is an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Data presented represent the weekly mean of the scores of the average pain severity over the last 24 hours. Scores are based on daily assessments recorded by patients in their diaries. De novo: use of gabapentin for <56 contiguous days prior to randomization. Prior use: use of gabapentin for >=56 contiguous days prior to randomization. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 1 week, 2 weeks, 3 weeks, 4 weeks, 5 weeks, 6 weeks, 7 weeks, 8 weeks, 9 weeks, 10 weeks, 11 weeks, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
de novo, baselinede novo, week 1de novo, week 2de novo, week 3de novo, week 4de novo, week 5de novo, week 6de novo, week 7de novo, week 8de novo, week 9de novo, week 10de novo, week 11de novo, week 12prior use, baselineprior use, week 1prior use, week 2prior use, week 3prior use, week 4prior use, week 5prior use, week 6prior use, week 7prior use, week 8prior use, week 9prior use, week 10prior use, week 11prior use, week 12
Duloxetine5.39-0.71-1.22-1.83-2.35-2.65-2.64-2.73-2.78-2.89-2.86-2.98-3.085.99-0.48-0.99-1.32-1.61-1.95-2.03-2.14-2.16-2.38-2.45-2.46-2.46
Gabapentin + Duloxetine5.49-0.38-1.10-1.62-1.67-1.81-1.88-2.07-2.06-2.10-1.92-2.09-2.105.92-0.65-1.28-1.68-1.75-1.96-1.98-2.17-2.31-2.37-2.44-2.41-2.53
Pregabalin5.24-0.22-0.39-0.71-0.84-0.95-1.09-1.08-1.26-1.21-1.42-1.48-1.625.91-0.30-0.70-1.18-1.64-1.72-1.92-1.93-1.89-2.04-2.14-2.27-2.39

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Summary of Adverse Events and Serious Adverse Events Leading to Discontinuation

(NCT00385671)
Timeframe: baseline through 12 weeks

,,
Interventionparticipants (Number)
NauseaPeripheral OedemaInsomniaSomnolenceAnxietyDizzinessDysuriaHeadacheHyperhidrosisSedationAllergic OedemaAnorgasmiaIncreased Blood CreatineIncreased Blood GlucoseBruxismCerebrovascular AccidentChest DiscomfortDepressionDermatitisDiarrhoeaDry mouthEnterovirus InfectionFatigueGeneralized OedemaFacial HypoaesthesiaLacunar InfarctionLoss of ConsciousnessLymphomaMental ImpairmentMuscular WeaknessMyoclonusPollakiuriaPulomnary EmbolismRashSleep DisorderUrticariaVomiting
Duloxetine4042102210010011011010100010001000101
Gabapentin + Duloxetine4000120011001000100101000001010111000
Pregabalin0501000001100100000000011100100000010

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Path Analysis of Improvement in Pain Through Improvement in Depressive Symptoms

Contribution to reduction in pain directly by treatment and indirectly by treatment through the reduction of depressive symptoms using path analysis. The direct treatment effect estimates the mean drug difference in pain reduction directly through treatment; the indirect treatment effect estimates the contribution that treatment plays to the mean drug difference in pain reduction indirectly through the reduction in mood symptoms; the total effect estimates the drug difference in reducing pain in sum through the specified path of direct and indirect treatment effects. (NCT00385671)
Timeframe: baseline through 12 weeks

Interventioncoefficient (Number)
Direct Treatment EffectIndirect Treatment EffectTotal Treatment Effect
Ordinary Coefficient-0.4490.014-0.435

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Number of Patients With Treatment-Emergent Elevated Laboratory Analytes

Treatment-emergent: within range at baseline, out of range after baseline. Ranges in Units/Liter (U/L). Aspartate Aminotransferase (AST): female (f): >34, male (m): >36. Alanine Aminotransferase (ALT): f:<69 years (yr) >34, ≥69yr >32; m: <69yr >43, ≥69yr >35. Total Bilirubin (TBili): >21. Gamma Glutamyl Transferase (GGT): f: <59yr >49, ≥59yr >50; m: <59yr >61, ≥59yr >50. Fasting Plasma Glucose (FPG): <59yr >6.4, ≥59yr >6.7. Hemoglobin A1C (HbA1C) >6%. Alkaline Phosphatase (AlkPhos): f: 18-50yr >106, 50-70yr >123, 70-80yr >164, ≥80yr >221; m: 18-50yr >129, 50-70yr >131, 70-80yr >156, ≥80yr >187 (NCT00385671)
Timeframe: baseline through 12 weeks

,,
Interventionparticipants (Number)
AST, n=113, n=116, n=109ALT, n=111, n=104, n=110TBili, n=119, n=121, n=116GGT, n=102, n=105, n=96FPG, n=33, n=30, n=36HbA1C, n=17, n=18, n=29AlkPhos, n=112, n=114, n=113
Duloxetine66061123
Gabapentin + Duloxetine4100618104
Pregabalin4322764

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Number of Participants With Treatment-emergent Elevated Blood Pressure

"Elevated systolic blood pressure: >=130 millimeter mercury (mm Hg) + an increase of >=10 mm Hg if baseline <130 mm Hg.~Elevated diastolic blood pressure: >=85 mm Hg + an increase of >=10 mm Hg if baseline <85 mm Hg." (NCT00385671)
Timeframe: baseline through 12 weeks

,,
Interventionparticipants (Number)
diastolic, n=94, n=98, n=100systolic, n=42, n=39, n=56
Duloxetine1215
Gabapentin + Duloxetine1316
Pregabalin1120

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Number of Participants With Treatment-Emergent Changes in Body Weight

"Treatment-emergent high body weight: weight at last visit >=107% of baseline weight.~Treatment-emergent low body weight: weight at last visit <=93% of baseline weight." (NCT00385671)
Timeframe: baseline through 12 weeks

,,
Interventionparticipants (Number)
highlow
Duloxetine110
Gabapentin + Duloxetine38
Pregabalin62

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Mean Change From Baseline to 12 Weeks in Total Bilirubin

(NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionmicromole/liter (Mean)
baselinechange
Duloxetine8.07-0.28
Gabapentin + Duloxetine8.23-0.42
Pregabalin8.43-0.51

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Mean Change From Baseline to 12 Weeks in Sheehan Disability Scale (SDS) - Total Score and Scores for Items 1 to 3

The SDS is completed by the patient and is used to assess the effect of the patient's symptoms on their work/social/family life. Total scores range from 0 to 30, higher values indicate greater disruption in the patient's life. Item 1 assesses the effect of the patient's symptoms on their work/school schedule, Item 2 on their social life/leisure activities, and Item 3 on their family life/home responsibilities. Subscales scores range: 0-10, higher values indicate greater disruption in the patient's life. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
TotalItem 1Item 2Item 3
Duloxetine-3.47-1.21-1.12-1.17
Gabapentin + Duloxetine-4.54-1.95-1.53-1.54
Pregabalin-4.96-1.96-1.64-1.70

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Mean Change From Baseline to 12 Weeks in Sexual Functioning Questionnaire (CSFQ) Total Score and Subscale Scores

14-item subject-rated scale assessing medication related changes in sexual activity + functioning. Structured interview/questionnaire. It measures five dimensions of sexual behavior: pleasure; desire/frequency; desire/interest; arousal; and orgasm. The total score is obtained across all 5 dimensions, ranging from 14 to 70. Subscale score ranges: desire/frequency=2-10; desire/interest=3-15; pleasure=1-5; arousal=3-15; orgasm=3-15. Higher scores = better sexual functioning. Least-squares means: adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
male, total; n=62, n=67, n=66female, total; n=39; n=42, n=43male, pleasure; n=64, n=67, n=69female, pleasure; n=40, n=42, n=43male, desire/frequency; n=65, n=67, n=69female, desire/frequency; n=42, n=42, n=43male, desire/interest; n=65, n=67, n=70female, desire/interest; n=42, n=42, n=45male, arousal; n=65, n=67, n=70female, arousal; n=40, n=42, n=45male, orgasm; n=64, n=67, n=69female, orgasm; n=40, n=42, n=43
Duloxetine0.481.12-0.060.470.060.26-0.190.340.520.070.18-0.05
Gabapentin + Duloxetine1.29-0.610.13-0.090.160.300.050.010.52-0.300.17-0.85
Pregabalin-0.53-0.010.080.15-0.020.21-0.27-0.170.17-0.11-0.390.31

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Mean Change From Baseline to 12 Weeks in Portland Neurotoxicity Scale - Total Score and Subscale Scores

The Portland Neurotoxicity Scale is a 15-item, patient-completed questionnaire designed to assess the degree of impact of anti-epileptic drug therapy on a number of cognitive and somatomotor parameters. The total score ranges from 15-135 with higher scores indicating more toxicity. The cognitive toxicity score ranges from 10-90 and the somatomotor toxicity score ranges from 5-45, for both higher scores indicate more toxicity. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
total, n=122, n=126, n=128cognitive toxicity, n=126, n=129, n=128somatomotor toxicity, n=122, n=126, n=129
Duloxetine-8.92-6.23-2.58
Gabapentin + Duloxetine-7.29-5.29-1.91
Pregabalin-6.27-5.12-1.36

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Mean Change From Baseline to 12 Weeks in Leeds Sleep Evaluation Questionnaire (LSEQ) Subscales of Ease of Going to Sleep (GTS), Awakening (AFS), and Behavior Following Wakefulness (BFW), Quality of Sleep (QOS)

The LSEQ assesses the effects of psychoactive compounds on sleep and early morning behavior. Participants mark a series of 100 mm line analogue scales, indicating the direction and magnitude of any changes in behavioral state they experience following administration of the drug. Scores are represented in millimeters, higher scores indicate better sleep and better early morning behavior. Subscale score ranges: GTS=0-300, QOS=0-200, AFS=0-200, BFW=0-300. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
GTS, n=122, n=119, n=118QOS, n=121, n=118, n=118AFS, n=122, n=118, n=118BFW, n=124, n=115, n=118
Duloxetine17.407.398.1421.04
Gabapentin + Duloxetine14.759.6411.8614.33
Pregabalin10.969.3210.0219.67

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Mean Change From Baseline to 12 Weeks in Hepatic Enzyme Serum Levels

Aspartate aminotransferase = AST Alanine aminotransferase = ALT Gamma glutamyl transferase = GGT Alkaline phosphatase = AlkPhos (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits/liter (Mean)
baseline, AST, n=119, n=121, n=118change, AST, n=119, n=121, n=118baseline, ALT, n=120, n=122, n=120change, ALT, n=120, n=122, n=120baseline, GGT, n=121, n=123, n=120change, GGT, n=121, n=123, n=120baseline, AlkPhos, n=121, n=123, n=120change, AlkPhos, n=121, n=123, n=120
Duloxetine22.84-0.5225.04-0.1634.29-3.0383.740.55
Gabapentin + Duloxetine23.42-0.4824.390.0343.93-2.5582.181.78
Pregabalin22.551.1223.88-0.1340.801.1784.972.80

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Mean Change From Baseline to 12 Weeks in Hemoglobin A1C

(NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionpercent (Mean)
baselinechange
Duloxetine7.51-0.01
Gabapentin + Duloxetine7.160.07
Pregabalin7.57-0.12

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Mean Change From Baseline to 12 Weeks in Fasting Plasma Glucose

(NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionmillimole/liter (Mean)
baselinechange
Duloxetine8.450.19
Gabapentin + Duloxetine7.990.67
Pregabalin8.240.16

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Mean Change From Baseline to 12 Weeks in Clinical Global Impression of Severity Scale (CGI Severity)

Measures severity of illness at the time of assessment compared with start of treatment. Scores range from 1 (normal, not at all ill) to 7 (among the most extremely ill patients). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine4.47-1.16
Gabapentin + Duloxetine4.40-1.13
Pregabalin4.27-1.06

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Severity: Worst Pain

A self-reported scale that measures the severity of pain based on the worst pain experienced over the past 24-hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 Weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine6.87-3.02
Gabapentin + Duloxetine7.00-2.64
Pregabalin6.73-2.34

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Severity: Pain Right Now

A self-reported scale that measures the severity of pain based on the pain right now. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine5.03-2.24
Gabapentin + Duloxetine5.36-2.19
Pregabalin4.98-1.77

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Severity: Least Pain

A self-reported scale that measures the severity of pain based on the least pain experienced over the past 24-hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine4.18-1.55
Gabapentin + Duloxetine4.07-1.54
Pregabalin4.23-1.27

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Severity: 24-hour Average Pain

A self-reported scale that measures the severity of pain based on the average pain over the past 24-hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine5.65-2.44
Gabapentin + Duloxetine5.75-2.29
Pregabalin5.53-1.80

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Mean Interference Score

The Interference scores range from 0 (does not interfere) to 10 (completely interferes). There are 7 questions assessing the interference of pain in the past 24 hours for general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life. Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine4.61-2.00
Gabapentin + Duloxetine4.83-1.90
Pregabalin4.25-1.62

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference: With General Activity

A self-reported scale that measures the interference of pain in the past 24 hours on general activity. The Interference scores range from 0 (does not interfere) to 10 (completely interferes). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine5.03-2.38
Gabapentin + Duloxetine5.03-1.86
Pregabalin4.24-1.51

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Walking Ability

A self-reported scale that measures the interference of pain in the past 24 hours on walking ability. The Interference scores range from 0 (does not interfere) to 10 (completely interferes). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine5.52-2.56
Gabapentin + Duloxetine5.79-2.09
Pregabalin5.25-1.88

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Sleep

A self-reported scale that measures the interference of pain in the past 24 hours on sleep. The Interference scores range from 0 (does not interfere) to 10 (completely interferes). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine4.97-2.12
Gabapentin + Duloxetine5.40-2.50
Pregabalin4.91-2.29

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Relations With Other People

A self-reported scale that measures the interference of pain in the past 24 hours on relations with other people. The Interference scores range from 0 (does not interfere) to 10 (completely interferes). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine3.08-1.27
Gabapentin + Duloxetine3.29-1.17
Pregabalin2.96-0.97

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Mood

A self-reported scale that measures the interference of pain in the past 24 hours on mood. The Interference scores range from 0 (does not interfere) to 10 (completely interferes). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine4.08-1.85
Gabapentin + Duloxetine4.10-1.43
Pregabalin3.42-1.46

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Mean Change From Baseline to 12 Weeks in Brief Pain Inventory (BPI) - Interference With Enjoyment of Life

A self-reported scale that measures the interference of pain in the past 24 hours on enjoyment of life. The Interference scores range from 0 (does not interfere) to 10 (completely interferes). Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine4.63-2.09
Gabapentin + Duloxetine5.02-2.33
Pregabalin4.38-1.82

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Mean Change From Baseline to 12 Weeks in Blood Pressure

Least-squares means represent adjustment due to baseline severity and investigative site. (NCT00385671)
Timeframe: baseline through 12 weeks

,,
Interventionmillimeter mercury (Least Squares Mean)
DiastolicSystolic
Duloxetine2.24-3.08
Gabapentin + Duloxetine-0.79-2.08
Pregabalin0.18-3.31

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Discontinuations for Abnormal Laboratory Analytes, Vital Signs, Overall and for Each Measure

Presented are numbers of participants who discontinued due to a change from baseline in laboratory analytes or vital signs. (NCT00385671)
Timeframe: baseline through 12 weeks

,,
Interventionparticipants (Number)
Increased blood creatinineIncreased blood glucose
Duloxetine00
Gabapentin + Duloxetine10
Pregabalin01

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Categorical Change From Baseline to 12 Weeks in Sexual Functioning Questionnaire (CSFQ) Total Score and Subscale Scores

14-item subject-rated scale assessing changes in sexual activity and functioning; structured interview/questionnaire, designed to measure medication related changes in sexual functioning. 5 dimensions of sexual behavior: pleasure; desire/frequency; desire/interest; arousal; orgasm. Total score: obtained across all 5 dimensions, ranges from 14 to 70. Subscale scores: desire/frequency=2-10; desire/interest=3-15; pleasure=1-5; arousal=3-15; orgasm=3-15. Higher scores = better sexual functioning. Categories: better=positive change in score; same=no change in score; worse=negative change in score. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionparticipants (Number)
male, total, better; n=62, n=67, n=66male, total, same; n=62, n=67, n=66male, total, worse; n=62, n=67, n=66female, total, better; n=39, n=42, n=43female, total, same; n=39, n=42, n=43female, total, worse; n=39, n=42, n=43male, pleasure, better; n=64, n=67, n=69male, pleasure, same; n=64, n=67, n=69male, pleasure, worse; n=64, n=67, n=69female, pleasure, better; n=40, n=42, n=43female, pleasure, same; n=40, n=42, n=43female, pleasure, worse; n=40, n=42, n=43male, desire/frequency, better; n=65, n=67, n=69male, desire/frequency, same; n=65, n=67, n=69male, desire/frequency, worse; n=65, n=67, n=69female, desire/frequency, better; n=42, n=42, n=43female, desire/frequency, same; n=42, n=42, n=43female, desire/frequency, worse; n=42, n=42, n=43male, desire/interest, better; n=65, n=67, n=70male, desire/interest, same; n=65, n=67, n=70male, desire/interest, worse; n=65, n=67, n=70female, desire/interest, better; n=42, n=42, n=45female, desire/interest, same; n=42, n=42, n=45female, desire/interest, worse; n=42, n=42, n=45male, arousal, better; n=65, n=67, n=70male, arousal, same; n=65, n=67, n=70male, arousal, worse; n=65, n=67, n=70female, arousal, better; n=40, n=42, n=45female, arousal, same; n=40, n=42, n=45female, arousal, worse; n=40, n=42, n=45male, orgasm, better; n=64, n=67, n=69male, orgasm, same; n=64, n=67, n=69male, orgasm, worse; n=64, n=67, n=69female, orgasm, better; n=40, n=42, n=43female, orgasm, same; n=40, n=42, n=43female, orgasm, worse; n=40, n=42, n=43
Duloxetine26932235141140161621520291812219181930181410242914181014183118171312
Gabapentin + Duloxetine31112418718213216632524232212247261727161712233314151614172923111616
Pregabalin249291352113391210237123617112110201926131217202817111415122923151312

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Categorical Change From Baseline to 12 Weeks in Number of Patients Using Health Care as Measured by the Resource Utilization Scale

The Resource Utilization Scale measures direct and indirect costs (collected only for US sites). Direct costs include inpatient and outpatient costs, while indirect costs include lost days of work and caregiver time spent with patients. Inpatient costs include costs associated with hospitalizations and time spent in emergency rooms and psychiatric rooms. Outpatient costs include costs associated with visits to various health care providers, home health care by health care providers, and partial care. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionparticipants (Number)
hours worked, greater, n=86, n=90, n=83hours worked, same, n=86, n=90, n=83hours worked, lower, n=86, n=90, n=83hours volunteered, greater, n=86, n=91, n=82hours volunteered, same, n=86, n=91, n=82hours volunteered, lower, n=86, n=91, n=82psychiatric visits, greater, n=92, n=93, n=90psychiatric visits, same, n=92, n=93, n=90psychiatric visits, lower, n=92, n=93, n=90outpatient group visits, greater, n=91, n=92, n=91outpatient group visits, same, n=91, n=92, n=91outpatient group visits, lower, n=91, n=92, n=91outpatient ind. visits, greater, n=91, n=88, n=90outpatient ind. visits, same, n=91, n=88, n=90outpatient ind. visits, lower, n=91, n=88, n=90days of partial care, greater, n=93, n=95, n=90days of partial care, same, n=93, n=95, n=90days of partial care, lower, n=93, n=95, n=90nights of partial care, greater, n=92, n=95, n=91nights of partial care, same, n=92, n=95, n=91nights of partial care, lower, n=92, n=95, n=91ER visits-psychiatric, greater, n=93, n=94, n=91ER visits-psychiatric, same, n=93, n=94, n=91ER visits-psychiatric, lower, n=93, n=94, n=91ER visits-nonpsychiatric, greater,n=91, n=95, n=88ER visits-nonpsychiatric, same,n=91, n=95, n=88ER visits-nonpsychiatric, lower,n=91, n=95, n=88phone mental health, greater,n=94, n=95, n=90phone mental health, same,n=94, n=95, n=90phone mental health, lower,n=94, n=95, n=90nonpsychiatric visits, greater, n=89, n=94, n=83nonpsychiatric visits, same, n=89, n=94, n=83nonpsychiatric visits, lower, n=89, n=94, n=83unpaid care, greater, n=84, n=87, n=86unpaid care, same, n=84, n=87, n=86unpaid care, lower, n=84, n=87, n=86missed work caregiver, greater, n=6, n=9, n=5missed work caregiver, same, n=6, n=9, n=5missed work caregiver, lower, n=6, n=9, n=5paid care, greater, n=60, n=58, n=58paid care, same, n=60, n=58, n=58paid care, less, n=60, n=58, n=58
Duloxetine12661287760912092018431940194009404856193120462808700810580
Gabapentin + Duloxetine135911106662844189148152871289009104786287118452008510500580
Pregabalin106511766132882090138442910191009123835192124442128200600600

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Categorial Change From Baseline to 12 Weeks in Portland Neurotoxicity Scale - Total Score and Subscale Scores

The Portland Neurotoxicity Scale is a 15-item, patient-completed questionnaire designed to assess the degree of impact of anti-epileptic drug therapy on a number of cognitive and somatomotor parameters. Categories: better=negative change in score; same=no change in score; worse=positive change in score. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionparticipants (Number)
better, total; n=122, n=126, n=128same, total; n=122, n=126, n=128worse, total; n=122, n=126, n=128better, cognitive toxicity; n=126, n=129, n=128same, cognitive toxicity; n=126, n=129, n=128worse, cognitive toxicity; n=126, n=129, n=128better, somatomotor toxicity; n=122, n=126, n=129same, somatomotor toxicity; n=122, n=126, n=129worse, somatomotor toxicity; n=122, n=126, n=129
Duloxetine8453780643741933
Gabapentin + Duloxetine8643882541741936
Pregabalin6884675942601547

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Weekly Mean Change From Baseline to 12 Weeks in 24 Hour Average Pain Severity - Only Participants Who Adhered to Key Protocol Requirements (Per-Protocol Population)

Ordinal scale: 0=no pain, 10=worst possible pain. Data=weekly mean of scores of average pain severity over last 24 hours (h). Scores: daily assessments recorded by patients in diaries. Only patients adhering to key protocol criteria included: baseline Weekly Mean 24h Average Pain Score ≥4; 80-120% compliant with study Drug, each visit; baseline Michigan Neuropathy Screening Instrument Physical Assessment Total Score ≥3; gabapentin taper ≤14 days, no HbA1c ≥12% post randomization; no contraindicated medications used. Least-squares means=adjustment due to baseline severity + investigative site. (NCT00385671)
Timeframe: baseline, 12 weeks

,,
Interventionunits on a scale (Least Squares Mean)
baselinechange
Duloxetine6.02-2.58
Gabapentin + Duloxetine5.74-2.40
Pregabalin5.74-2.12

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Time to First ≥ 2 Points Reduction in Weekly Mean 24 Hour Average Pain Score

This is the number of days required to first achieve a nominal outcome reflecting whether or not a clinically-important efficacy outcome was achieved. It is based on a comparison between baseline and post-baseline scores on an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Used were the weekly mean of the scores of the average pain severity over the last 24 hours. The weekly averages were based on daily assessments recorded by patients in their diaries. (NCT00385671)
Timeframe: baseline through 12 weeks

Interventiondays (Median)
Pregabalin56.0
Duloxetine35.0
Gabapentin + Duloxetine28.0

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Summary of Number of Participants Who Discontinued

Number of participants who discontinued. The reasons for discontinuation are presented in the participant flow. (NCT00385671)
Timeframe: baseline through 12 weeks

Interventionparticipants (Number)
Pregabalin38
Duloxetine51
Gabapentin + Duloxetine36

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Patient's Global Impression of Improvement Scale (PGI - Improvement) at 12 Weeks

A scale that measures the patient's perception of improvement at the time of assessment compared with the start of treatment. The score ranges from 1 (very much better) to 7 (very much worse). (NCT00385671)
Timeframe: 12 weeks

Interventionunits on a scale (Mean)
Pregabalin3.03
Duloxetine3.01
Gabapentin + Duloxetine2.83

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Number of Patients With a Reduction of ≥ 50% in Weekly Mean of 24 Hour Average Pain Score

This is a nominal outcome reflecting whether or not a clinically-important efficacy outcome was achieved at endpoint. It is based on a comparison between baseline and endpoint scores on an ordinal scale with scores from 0 (no pain) to 10 (worst possible pain). Used were the weekly mean of the scores of the average pain severity over the last 24 hours. The weekly averages were based on daily assessments recorded by patients in their diaries. (NCT00385671)
Timeframe: baseline, 12 weeks

Interventionparticipants (Number)
Pregabalin48
Duloxetine50
Gabapentin + Duloxetine47

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Endpoint Medical Outcomes Study Sleep Scale Scores:Awaken Short of Breath or With Headache

Score range for awaken short of breath or with headache is 0-100. Higher scores indicate more of the attribute. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo5.99
Pregabalin 150 mg/Day6.70
Pregabalin 300 mg/Day6.70
Pregabalin 600 mg/Day4.95

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Endpoint Medical Outcomes Study Sleep Scale Scores:Overall Sleep Problem Index

Score range for overall sleep problem index is 0-100. Higher scores indicate more of the attribute. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo29.22
Pregabalin 150 mg/Day25.19
Pregabalin 300 mg/Day26.03
Pregabalin 600 mg/Day26.78

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Endpoint Medical Outcomes Study Sleep Scale Scores:Quantity of Sleep

Sleep Quantity subscale is scored from 0-24 indicating the number of hours of sleep. Higher scores indicate more of the attribute named in the subscale. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo6.58
Pregabalin 150 mg/Day6.59
Pregabalin 300 mg/Day6.85
Pregabalin 600 mg/Day6.79

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Endpoint Medical Outcomes Study Sleep Scale Scores:Sleep Adequacy

Score range for sleep adequacy is 0-100. Higher scores indicate more of the attribute. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo63.37
Pregabalin 150 mg/Day67.38
Pregabalin 300 mg/Day73.67
Pregabalin 600 mg/Day69.37

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Endpoint Medical Outcomes Study Sleep Scale Scores:Sleep Disturbance

Score range for sleep disturbance is 0-100.Higher scores indicate more of the attribute. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo31.99
Pregabalin 150 mg/Day23.09
Pregabalin 300 mg/Day23.75
Pregabalin 600 mg/Day20.65

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Endpoint Medical Outcomes Study Sleep Scale Scores:Snoring

Score range for snoring is 0-100.Higher scores indicate more of the attribute. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo22.28
Pregabalin 150 mg/Day26.58
Pregabalin 300 mg/Day25.24
Pregabalin 600 mg/Day31.99

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Endpoint Medical Outcomes Study Sleep Scale Scores:Somnolence

Score range for Somnolence is 0-100. Higher scores indicate more of the attribute. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo30.23
Pregabalin 150 mg/Day34.16
Pregabalin 300 mg/Day41.45
Pregabalin 600 mg/Day44.46

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Endpoint Medical Outcomes Study Sleep Scale: Number of Participants With Optimal Sleep

Number of participants who reported Optimal Sleep (NCT00394901)
Timeframe: Week13/discontinuation

Interventionparticipants (Number)
Placebo37
Pregabalin 150 mg/Day26
Pregabalin 300 mg/Day48
Pregabalin 600 mg/Day44

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Endpoint Patient Global Impression Change

Patient Global Impression Change is scaled from 1 to 7. 1=very much improved, 7=very much worse. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Mean)
Placebo3.6
Pregabalin 150 mg/Day3.3
Pregabalin 300 mg/Day2.9
Pregabalin 600 mg/Day3.0

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Endpoint Present Pain Intensity Scores of the Short-Form McGill Pain Questionnaire

Present pain intensity score range from 0-5. Higher scores indicate more severe pain. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo2.21
Pregabalin 150 mg/Day2.01
Pregabalin 300 mg/Day1.78
Pregabalin 600 mg/Day1.90

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Endpoint Short-Form 36-Item Health Survey Scores: Bodily Pain

Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo47.47
Pregabalin 150 mg/Day48.09
Pregabalin 300 mg/Day54.54
Pregabalin 600 mg/Day52.50

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Endpoint Sensory Scores of the Short-Form McGill Pain Questionnaire

Sensory score range from 0-33. Higher scores indicate more severe pain. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo8.97
Pregabalin 150 mg/Day8.42
Pregabalin 300 mg/Day7.11
Pregabalin 600 mg/Day6.97

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Number of Responders

A responder is defined as a subject with a 50% reduction in weekly mean pain score from baseline to endpoint. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionparticipants (Number)
Placebo15
Pregabalin 150 mg/Day21
Pregabalin 300 mg/Day32
Pregabalin 600 mg/Day30

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Number of Patients Not Reporting Hyperalgesia

Participants not reporting hyperalgesia. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionparticipants (Number)
Placebo66
Pregabalin 150 mg/Day55
Pregabalin 300 mg/Day66
Pregabalin 600 mg/Day65

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Number of Patients Not Reporting Allodynia

Participants not reporting allodynia. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionparticipants (Number)
Placebo65
Pregabalin 150 mg/Day52
Pregabalin 300 mg/Day63
Pregabalin 600 mg/Day66

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Endpoint Affective Scores of the Short-Form McGill Pain Questionnaire

Affective score range from 0-12. Higher scores indicate more severe pain. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo2.43
Pregabalin 150 mg/Day2.14
Pregabalin 300 mg/Day1.72
Pregabalin 600 mg/Day1.82

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Mean Sleep Interference Scores at Week 9

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 9

Interventionscore on scale (Least Squares Mean)
Placebo3.17
Pregabalin 150 mg/Day2.44
Pregabalin 300 mg/Day2.38
Pregabalin 600 mg/Day2.22

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Mean Pain Scores at Week 10

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 10

Interventionscore on scale (Least Squares Mean)
Placebo5.08
Pregabalin 150 mg/Day4.86
Pregabalin 300 mg/Day4.18
Pregabalin 600 mg/Day4.56

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Mean Sleep Interference Scores at Week 11

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 11

Interventionscore on scale (Least Squares Mean)
Placebo3.16
Pregabalin 150 mg/Day2.43
Pregabalin 300 mg/Day2.37
Pregabalin 600 mg/Day2.27

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Mean Sleep Interference Scores at Week 8

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 8

Interventionscore on scale (Least Squares Mean)
Placebo3.10
Pregabalin 150 mg/Day2.49
Pregabalin 300 mg/Day2.30
Pregabalin 600 mg/Day2.14

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Mean Sleep Interference Scores at Week 7

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 7

Interventionscore on scale (Least Squares Mean)
Placebo3.19
Pregabalin 150 mg/Day2.55
Pregabalin 300 mg/Day2.36
Pregabalin 600 mg/Day2.21

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Mean Sleep Interference Scores at Week 6

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 6

Interventionscore on scale (Least Squares Mean)
Placebo3.24
Pregabalin 150 mg/Day2.63
Pregabalin 300 mg/Day2.37
Pregabalin 600 mg/Day2.33

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Mean Sleep Interference Scores at Week 5

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 5

Interventionscore on scale (Least Squares Mean)
Placebo3.26
Pregabalin 150 mg/Day2.74
Pregabalin 300 mg/Day2.39
Pregabalin 600 mg/Day2.41

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Mean Sleep Interference Scores at Week 4

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 4

Interventionscore on scale (Least Squares Mean)
Placebo3.35
Pregabalin 150 mg/Day2.79
Pregabalin 300 mg/Day2.54
Pregabalin 600 mg/Day2.36

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Mean Sleep Interference Scores at Week 10

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 10

Interventionscore on scale (Least Squares Mean)
Placebo3.16
Pregabalin 150 mg/Day2.46
Pregabalin 300 mg/Day2.39
Pregabalin 600 mg/Day2.28

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Mean Sleep Interference Scores at Endpoint

Scores range from 0-10. Higher scores indicate more severe interference with sleep. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo3.20
Pregabalin 150 mg/Day2.44
Pregabalin 300 mg/Day2.39
Pregabalin 600 mg/Day2.26

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Mean Pain Scores at Week 9

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 9

Interventionscore on scale (Least Squares Mean)
Placebo5.08
Pregabalin 150 mg/Day4.87
Pregabalin 300 mg/Day4.22
Pregabalin 600 mg/Day4.50

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Mean Pain Scores at Week 8

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 8

Interventionscore on scale (Least Squares Mean)
Placebo5.04
Pregabalin 150 mg/Day4.89
Pregabalin 300 mg/Day4.23
Pregabalin 600 mg/Day4.47

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Mean Pain Scores at Week 7

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 7

Interventionscore on scale (Least Squares Mean)
Placebo5.14
Pregabalin 150 mg/Day4.90
Pregabalin 300 mg/Day4.24
Pregabalin 600 mg/Day4.48

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Mean Pain Scores at Week 6

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 6

Interventionscore on scale (Least Squares Mean)
Placebo5.29
Pregabalin 150 mg/Day5.02
Pregabalin 300 mg/Day4.31
Pregabalin 600 mg/Day4.54

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Mean Pain Scores at Week 5

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 5

Interventionscore on scale (Least Squares Mean)
Placebo5.29
Pregabalin 150 mg/Day5.15
Pregabalin 300 mg/Day4.42
Pregabalin 600 mg/Day4.55

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Mean Pain Scores at Week 4

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week4

Interventionscore on scale (Least Squares Mean)
Placebo5.43
Pregabalin 150 mg/Day5.14
Pregabalin 300 mg/Day4.57
Pregabalin 600 mg/Day4.50

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Mean Sleep Interference Scores at Week 3

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 3

Interventionscore on scale (Least Squares Mean)
Placebo3.50
Pregabalin 150 mg/Day2.81
Pregabalin 300 mg/Day2.60
Pregabalin 600 mg/Day2.43

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Mean Sleep Interference Scores at Week 2

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 2

Interventionscore on scale (Least Squares Mean)
Placebo3.56
Pregabalin 150 mg/Day2.89
Pregabalin 300 mg/Day2.76
Pregabalin 600 mg/Day2.49

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Mean Sleep Interference Scores at Week 13

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 13

Interventionscore on scale (Least Squares Mean)
Placebo3.08
Pregabalin 150 mg/Day2.33
Pregabalin 300 mg/Day2.27
Pregabalin 600 mg/Day2.19

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Mean Sleep Interference Scores at Week 12

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 12

Interventionscore on scale (Least Squares Mean)
Placebo3.06
Pregabalin 150 mg/Day2.36
Pregabalin 300 mg/Day2.28
Pregabalin 600 mg/Day2.21

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Endpoint Clinical Global Impression Change

Clinical Global Impression Change is scaled from 1 to 7. 1=very much improved, 7=very much worse. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Mean)
Placebo3.3
Pregabalin 150 mg/Day3.1
Pregabalin 300 mg/Day2.7
Pregabalin 600 mg/Day2.7

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Mean Pain Scores at Week 3

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 3

Interventionscore on scale (Least Squares Mean)
Placebo5.59
Pregabalin 150 mg/Day5.18
Pregabalin 300 mg/Day4.63
Pregabalin 600 mg/Day4.60

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Mean Pain Scores at Week 2

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 2

Interventionscore on scale (Least Squares Mean)
Placebo5.75
Pregabalin 150 mg/Day5.27
Pregabalin 300 mg/Day4.76
Pregabalin 600 mg/Day4.73

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Mean Pain Scores at Week 13

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 13

Interventionscore on scale (Least Squares Mean)
Placebo4.97
Pregabalin 150 mg/Day4.70
Pregabalin 300 mg/Day4.16
Pregabalin 600 mg/Day4.36

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Mean Pain Scores at Week 12

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 12

Interventionscore on scale (Least Squares Mean)
Placebo5.00
Pregabalin 150 mg/Day4.71
Pregabalin 300 mg/Day4.15
Pregabalin 600 mg/Day4.37

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Mean Pain Scores at Week 11

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 11

Interventionscore on scale (Least Squares Mean)
Placebo5.12
Pregabalin 150 mg/Day4.88
Pregabalin 300 mg/Day4.18
Pregabalin 600 mg/Day4.47

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Mean Pain Scores at Week 1

Weekly mean pain score is defined as the mean of the last 7 daily diary pain ratings. Scores range from 0-10 (11 points ordinal)with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week 1

Interventionscore on scale (Least Squares Mean)
Placebo5.96
Pregabalin 150 mg/Day5.45
Pregabalin 300 mg/Day5.21
Pregabalin 600 mg/Day5.23

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Mean Pain Scores at Endpoint

Endpoint mean pain score is defined as the mean of the last 7 daily pain diary rating while taking the study medication, up to and including day after last dose. Scores range from 0-10 (11 points ordinal) with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo5.12
Pregabalin 150 mg/Day4.81
Pregabalin 300 mg/Day4.26
Pregabalin 600 mg/Day4.49

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Mean Pain Score at Endpoint by Groups of Subjects With Expected Similar Plasma Concentrations

Endpoint mean pain score is defined as the mean of the last 7 daily pain diary rating while taking the study medication, up to and including day after last dose. Scores range from 0-10 (11 points ordinal) with higher scores indicating increased pain. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo4.99
Expected Pregabalin Exposure of 300 mg/Day4.35
Expected Pregabalin Exposure of 600 mg/Day4.34

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Mean Sleep Interference Scores at Week 1

Weekly mean sleep interference scores is defined as the mean of the last 7 daily diary interference with sleep ratings. Scores range from 0-10 (11 points ordinal) with higher scores indicating more severe interference with sleep. (NCT00394901)
Timeframe: week 1

Interventionscore on scale (Least Squares Mean)
Placebo3.79
Pregabalin 150 mg/Day3.00
Pregabalin 300 mg/Day2.97
Pregabalin 600 mg/Day2.81

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Endpoint Visual Analogue Scale Scores of the Short-Form McGill Pain Questionnaire

Visual Analogue Scale Score range from 0-100mm. Higher scores indicate more severe pain. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionmm (Least Squares Mean)
Placebo50.02
Pregabalin 150 mg/Day47.80
Pregabalin 300 mg/Day41.99
Pregabalin 600 mg/Day42.59

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Endpoint Total Scores of the Short-Form McGill Pain Questionnaire

Total score range from 0-45. Higher scores indicate more severe pain. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo11.39
Pregabalin 150 mg/Day10.56
Pregabalin 300 mg/Day8.84
Pregabalin 600 mg/Day8.78

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Endpoint Short-Form 36-Item Health Survey Scores: Vitality

Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo54.16
Pregabalin 150 mg/Day59.80
Pregabalin 300 mg/Day61.58
Pregabalin 600 mg/Day58.31

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Endpoint Short-Form 36-Item Health Survey Scores: Social Functioning

Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo75.28
Pregabalin 150 mg/Day77.71
Pregabalin 300 mg/Day82.69
Pregabalin 600 mg/Day77.11

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Endpoint Short-Form 36-Item Health Survey Scores: Role Limitations-Physical

Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo67.96
Pregabalin 150 mg/Day77.35
Pregabalin 300 mg/Day74.63
Pregabalin 600 mg/Day69.42

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Endpoint Short-Form 36-Item Health Survey Scores: Role Limitations-Emotional

Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo69.99
Pregabalin 150 mg/Day76.14
Pregabalin 300 mg/Day75.41
Pregabalin 600 mg/Day73.02

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Endpoint Short-Form 36-Item Health Survey Scores: Physical Functioning

Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo76.16
Pregabalin 150 mg/Day79.68
Pregabalin 300 mg/Day76.93
Pregabalin 600 mg/Day77.20

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Endpoint Short-Form 36-Item Health Survey Scores: Mental Health

Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo61.91
Pregabalin 150 mg/Day65.90
Pregabalin 300 mg/Day68.90
Pregabalin 600 mg/Day66.67

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Endpoint Short-Form 36-Item Health Survey Scores: General Health Perception

Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00394901)
Timeframe: Week13/discontinuation

Interventionscore on scale (Least Squares Mean)
Placebo52.36
Pregabalin 150 mg/Day57.66
Pregabalin 300 mg/Day56.19
Pregabalin 600 mg/Day56.30

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Change From Baseline in Modified Brief Pain Inventory-Short Form (m-BPI-sf): Pain Interference Index Scores

Self-administered questionnaire: change from Baseline in mean pain interference with functional activities (general activity, mood, walking ability, relations with other people, sleep, normal work, and enjoyment of life) in past 24 hours. 11-point scale from 0 (does not interfere) to 10 (completely interferes). Change = observation mean minus Baseline mean. (NCT00407511)
Timeframe: Baseline, Week 8, Week 12, End of Treatment/Last Observation Carried Forward (EOT/LOCF)

Interventionscores on scale (Mean)
Week 8 (n=102)Week 12 (n=98)EOT/LOCF (n=102)
Pregabalin-3.8-4.2-4.0

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Change From Baseline in Mean Pain Score on the Daily Pain Rating Scale (DPRS)

11 point Likert scale; range: 0 to 10 (no pain to worst possible pain) over past 24 hours. Baseline score = mean score of preceding 7 days (including Visit 2). Weekly pain score = mean pain score from last 7 post-Baseline days preceding observation visit or last 7 days on study drug for early termination. Change = mean at observation minus mean at Baseline. (NCT00407511)
Timeframe: Week 4, Week 8, Week 12

Interventionscores on scale (Mean)
Week 4 (n=110)Week 8 (n=100)Week 12 (n=96)
Pregabalin-3.2-3.9-4.2

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Change From Baseline in Mean Daily Sleep Interference Score (DSIS)

Daily sleep interference measured on an 11-point Likert scale. Range: 0 (pain did not interfere with sleep) to 10 (pain completely interfered with sleep). Change = mean at observation minus mean at Baseline. Evaluations recorded in patient's daily sleep diaries. (NCT00407511)
Timeframe: Baseline, Week 1, Week 2, Week 3, Week 4, Week 5, Week 6, Week 7, Week 8, Week 9, Week 10, Week 11, Week 12, EOT/LOCF

Interventionscores on scale (Mean)
Week 1 (n=120)Week 2 (n=118)Week 3 (n=114)Week 4 (n=110)Week 5 (n=104Week 6 (n=103)Week 7 (n=100)Week 8 (n=100)Week 9 (n=97)Week 10 (n=99)Week 11 (n=98)Week 12 (n=96)EOT/LOCF (n=120)
Pregabalin-1.0-1.8-2.5-2.8-3.0-3.1-3.3-3.4-3.5-3.5-3.5-3.4-3.1

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Change From Baseline in Global Anxiety Visual Analogue Scale (GA-VAS)

100-mm line (Visual Analog Scale) marked by the subject to measure their degree of anxiety over past 24 hours. Range: 0 = not at all anxious to 100 = extremely anxious. Change = mean score at observation minus mean score at Baseline. (NCT00407511)
Timeframe: Baseline, Week 8, Week 12, EOT/LOCF

Interventionscores on scale (Mean)
Week 8 (n=99)Week 12 (n=97)EOT/LOCF (n=101)
Pregabalin-39.2-41.4-40.5

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Change From Baseline (BL) in Modified Brief Pain Inventory-Short Form (m-BPI-sf): Pain Severity Index Scores

Self-administered questionnaire: change from Baseline in mean pain severity index over past 24 hours; 11-point numeric rating scale ranging from 0 (no pain) to 10 (worst pain possible). Pain severity index is the mean of item scores 2, 3, and 4 (pain right now, worst pain, and average pain level). Change = mean score at observation minus mean score at Baseline. (NCT00407511)
Timeframe: Baseline, Week 8, Week 12, EOT/LOCF

Interventionscores on scale (Mean)
Week 8 (n=102)Week 12 (n=98)EOT/LOCF (n=102)
Pregabalin-4.2-4.7-4.6

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Change From Baseline to End of Treatment (EOT) in Weekly Mean Pain Score on the Daily Pain Rating Scale (DPRS)

11 point Likert scale: range 0 to 10 (no pain to worst possible pain) over past 24 hours. Baseline score = mean score of preceding 7 days (including Visit 2). Final end of treatment (EOT) pain score = mean pain score from last 7 post-Baseline days preceding Visit 8 (Week 12) or last 7 days on study drug for those who did not complete the study. Change = mean at EOT minus mean at Baseline. (NCT00407511)
Timeframe: Baseline, End of Treatment

Interventionscores on scale (Mean)
Pregabalin-3.8

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Pain Treatment Satisfaction Scale (PTSS): Satisfaction With Current Pain Medication

Satisfaction with current pain medication response scale: 0 (worst possible response) to 100 (best possible response). Score=[(5-mean of non-missing items)*100]/4. (NCT00407511)
Timeframe: Baseline, Week 8, Week 12, EOT/LOCF

Interventionscores on scale (Mean)
Baseline (n=78)Week 8 (n=100)Week 12 (n=97)EOT/LOCF (n=105)
Pregabalin52.5685.9288.5688.08

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Pain Treatment Satisfaction Scale (PTSS): Impact of Current Pain Medication

Impact of current pain medication response scale: 0 (worst possible response) to 100 (best possible response). Score=[(5-mean of non-missing items)*100]/4. (NCT00407511)
Timeframe: Baseline, Week 8, Week 12, EOT/LOCF

Interventionscores on scale (Mean)
Baseline (n=78)Week 8 (n=100)Week 12 (n=97)EOT/LOCF (n=105)
Pregabalin62.3490.3891.6691.40

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Clinical Global Impression of Change (CGIC)

7-point investigator rating scale of change in participant's status since beginning study medication. Range: 1 (very much improved) to 7 (very much worse). (NCT00407511)
Timeframe: End of Treatment/ Last Observation Carried Forward (Week 12 or last post-baseline assessment)

Interventionparticipants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch WorseVery much worse
Pregabalin415552000

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Patient Global Impression of Change (PGIC)

7-point participant rating scale for change observed in their overall status since beginning of study medication. Range: 1 (very much improved) to 7 (very much worse) (NCT00407511)
Timeframe: End of Treatment/ Last Observation Carried Forward (Week 12 or last post-baseline assessment)

Interventionparticipants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Pregabalin3753121000

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Change From Baseline in Visual Analogue Scale for Pain (VAS-pain)

100 mm line (Visual Analog Scale) marked by subject; Intensity of pain range (over past week): 0 = no pain to 100 = worst possible pain. Change = observation mean minus Baseline mean. (NCT00407511)
Timeframe: Baseline, Week 1, Week 2, Week 3, Week 4, Week 8, Week 12, EOT/LOCF

Interventionscores on scale (Mean)
Week 1 (n = 120)Week 2 (n = 116)Week 3 (n = 116)Week 4 (n = 109)Week 8 (n = 102)Week 12 (n = 98)EOT/LOCF (n = 120)
Pregabalin-18.8-28.5-34.9-41.0-46.6-49.0-45.9

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - 12 Items Total Intensity Score

Participant rated questionnaire used to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each of the relevant dimensions and a total score of 0-100. Higher score indicates a greater intensity of pain. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 104, 106)Change from baseline at endpoint (n = 99, 99)
Placebo0.4-0.1
Pregabalin0.4-0.1

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Burning Spontaneous Pain

Participant rated questionnaire used to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each of the relevant dimensions and a total score of 0-100. Higher score indicates a greater intensity of pain. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
BaselineChange from baseline at endpoint (n = 100, 99)
Placebo0.5-0.1
Pregabalin0.5-0.1

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Evoked Pain

Participant rated questionnaire used to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each of the relevant dimensions and a total score of 0-100. Higher score indicates a greater intensity of pain. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
BaselineChange from baseline at endpoint (n = 100, 99)
Placebo0.4-0.1
Pregabalin0.4-0.1

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Individual Item (1, 2, 3, 5, 6, 8, 9, 10, 11, 12) Score

Participant rated questionnaire used to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each of the relevant dimensions and a total score of 0-100. Higher score indicates a greater intensity of pain. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
1- Burning pain (n = 100, 99)2- Squeezing pain (n = 100, 99)3- Pain like pressure (n = 100, 99)5- Electric shocks (n = 100, 99)6- Stabbing pain (n = 100, 99)8- By light touching (n = 100, 99)9- By pressure (n = 100, 99)10- By something cold (n = 100, 99)11- Pins and needles (n = 99, 99)12- Tingling (n = 99, 99)
Placebo-1.00-0.41-0.20-0.68-0.52-0.94-1.10-0.52-0.62-0.83
Pregabalin-1.39-1.04-0.73-1.77-1.13-0.78-1.22-0.89-1.01-0.99

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Paresthesia/Dysesthesia

Participant rated questionnaire used to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each of the relevant dimensions and a total score of 0-100. Higher score indicates a greater intensity of pain. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 104, 106)Change from baseline at endpoint (n = 99, 99)
Placebo0.5-0.1
Pregabalin0.5-0.1

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Paroxysmal Pain

Participant rated questionnaire used to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each of the relevant dimensions and a total score of 0-100. Higher score indicates a greater intensity of pain. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
BaselineChange from baseline at endpoint (n = 100, 99)
Placebo0.3-0.1
Pregabalin0.4-0.1

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) - Pressing Spontaneous Pain

Participant rated questionnaire used to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each of the relevant dimensions and a total score of 0-100. Higher score indicates a greater intensity of pain. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
BaselineChange from baseline at endpoint (n = 100, 99)
Placebo0.4-0.0
Pregabalin0.4-0.1

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Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP) - Dynamic Mechanical Allodynia

Participant rated pain scale. The pain produced by the applied stimulus (dynamic mechanical allodynia - gentle stroking with foam brush) was rated on an 11 point numerical rating scale (0=no pain, 10=worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 83, 82)Change from baseline at endpoint (n = 79, 75)
Placebo2.3-0.3
Pregabalin2.7-0.6

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Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP) - Static Mechanical Allodynia

Participant rated pain scale. The pain produced by the applied stimulus (static mechanical allodynia - gentle constant mechanical pressure) was rated on an 11 point numerical rating scale (0=no pain, 10=worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 83, 82)Change from baseline at endpoint (n = 79, 75)
Placebo2.6-0.3
Pregabalin2.9-1.0

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Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP)- Cold Allodynia

Participant rated pain scale. The pain produced by the applied stimulus (Cold allodynia - touch with cool metal rod 13-17 degrees celsius was rated on an 11 point numerical rating scale (0=no pain, 10=worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 83, 82)Change from baseline at endpoint (n = 79, 72)
Placebo2.70.4
Pregabalin2.5-0.1

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Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP)- Cold Hyperalgesia Subscales

Participant rated pain scale. The pain produced by the applied stimulus (Cold hyperalgesia - touch with cold metal rod 4 degrees celsius) was rated on an 11 point numerical rating scale (0=no pain, 10=worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 83, 82)Change from baseline at endpoint (n = 79, 72)
Placebo2.80.4
Pregabalin2.8-0.1

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Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP)- Punctata Hyperalgesia

Participant rated pain scale. The pain produced by the applied stimulus (Punctata hyperalgesia - pinprick) was rated on an 11 point numerical rating scale (0=no pain, 10=worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n=83,82)Change from baseline at endpoint (n=79,75)
Placebo3.4-0.4
Pregabalin3.9-1.0

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Change From Baseline in Quantitative Assessment of Neuropathic Pain (QANeP)- Temporal Summation to Tactile Stimuli

Participant rated pain scale. The pain produced by the applied stimulus (Temporal summation to tactile stimuli - repeated touching/tapping) was rated on an 11 point numerical rating scale (0=no pain, 10=worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 83, 82)Change from baseline at endpoint (n = 79, 75)
Placebo3.9-0.8
Pregabalin4.1-0.5

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Change From Baseline in Weekly Mean Pain Score

Mean weekly score was calculated as the average of the available daily diary pain score values for the week. Pain score was measured on an 11-point numeric rating scale (NRS): 0 (no pain) to 10 (worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
BaselineChange from baseline at endpoint
Placebo6.5-1.2
Pregabalin6.5-1.9

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Change From Baseline in Weekly Mean Pain Score by Week

Mean weekly score was calculated as the average of the available daily diary pain score values for the week. Pain score was measured on an 11-point numeric rating scale (NRS): 0 (no pain) to 10 (worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 1 through16

,
Interventionscore on scale (Mean)
Baseline (n = 111, 108)Change at Week 1 (n = 111, 107)Change at Week 2 (n = 110, 105)Change at Week 3 (n = 107, 105)Change at Week 4 (n = 107, 103)Change at Week 5 (n = 105, 101)Change at Week 6 (n = 105, 99)Change at Week 7 (n = 103, 98)Change at Week 8 (n = 101, 97)Change at Week 9 (n = 98, 97)Change at Week 10 (n = 97, 91)Change at Week 11 (n = 96, 90)Change at Week 12 (n = 96, 91)Change at Week 13 (n = 93, 91)Change at Week 14 (n = 93, 92)Change at Week 15 (n = 93, 92)Change at Week 16 (n = 89, 90)
Placebo6.51-0.38-0.62-0.86-1.03-1.07-1.22-1.34-1.32-1.37-1.32-1.43-1.44-1.39-1.34-1.41-1.36
Pregabalin6.44-0.85-1.26-1.35-1.64-1.87-1.89-2.02-1.96-1.99-2.03-2.04-1.90-2.02-2.00-2.09-2.17

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Change From Baseline in Weekly Mean Sleep Interference Score

Pain-related sleep interference was assessed on an 11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 105, 105)Change from baseline at endpoint (n = 105, 104)
Placebo5.2-1.0
Pregabalin4.9-2.0

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Change From Baseline in Weekly Mean Sleep Interference Score by Week

Pain related sleep interference was assessed on an 11 point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). (NCT00407745)
Timeframe: Baseline, Week 1 through 16

,
Interventionscore on scale (Mean)
Baseline (n = 111, 107)Change at Week 1 (n = 111, 106)Change at Week 2 (n = 110, 104)Change at Week 3 (n = 107, 104)Change at Week 4 (n = 107, 102)Change at Week 5 (n = 105, 100)Change at Week 6 (n = 105, 98)Change at Week 7 (n = 103, 97)Change at Week 8 (n = 101, 96)Change at Week 9 (n = 98, 96)Change at Week 10 (n = 97, 90)Change at Week 11 (n = 96, 89)Change at Week 12 (n = 96, 90)Change at Week 13 (n = 93, 90)Change at Week 14 (n = 93, 91)Change at Week 15 (n = 93, 91)Change at Week 16 (n = 89, 89)
Placebo5.18-0.26-0.49-0.61-0.90-0.91-0.99-1.10-1.11-1.11-1.12-1.20-1.20-1.19-1.18-1.11-1.17
Pregabalin4.86-0.96-1.29-1.36-1.59-1.81-1.86-1.98-1.97-2.03-2.18-2.08-2.07-2.08-2.09-2.15-2.25

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Number of Participants With Categorical Scores on the Patient Global Impression of Change (PGIC) (Full Scale)

The PGIC is a participant-rated instrument measuring change in the participant's overall status on a 7-point scale: 1=very much improved, 2=much improved, 3=minimally improved, 4=no change, 5=minimally worse, 6=much worse, 7=very much worse. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionparticipants (Number)
1-Very much improved2-Much improved3-Minimally improved4-No change5-Minimally worse6-Much worse7-Very much worse
Placebo2252440530
Pregabalin7333819201

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Disturbance

Participant rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 105, 104)Change from baseline at endpoint (n = 100, 97)
Placebo51.2-8.0
Pregabalin51.9-17.3

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Duration Adjusted Average Change (DAAC) of Mean Pain Score

DAAC was derived from participant's daily pain diary, where pain was measured on an 11-point Numerical Rating Scale (NRS-Pain)ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). The DAAC was calculated as the mean of all daily pain diary rating post baseline minus the baseline score then multiplied by the proportion of the planned study duration completed by the participant. (NCT00407745)
Timeframe: Baseline, Week 16

Interventionscore on scale (Least Squares Mean)
Pregabalin-1.66
Placebo-1.07

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Number of Participants Having Optimal Sleep Based on Medical Outcomes Study Sleep Scale (MOS-SS)

Participant rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00407745)
Timeframe: Baseline, Week 16

Interventionparticipants (Number)
Pregabalin49
Placebo30

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Number of Participants With >=30% Reduction in Weekly Mean Pain Score From Baseline

Mean weekly score was calculated as the average of the available daily diary pain score values for the week. Pain score was measured on an 11-point numeric rating scale (NRS): 0 (no pain) to 10 (worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

Interventionparticipants (Number)
Pregabalin48
Placebo33

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Number of Participants With >=50% Reduction in Weekly Mean Pain Score From Baseline

Mean weekly score was calculated as the average of the available daily diary pain score values for the week. Pain score was measured on an 11-point numeric rating scale (NRS): 0 (no pain) to 10 (worst possible pain). (NCT00407745)
Timeframe: Baseline, Week 16

Interventionparticipants (Number)
Pregabalin31
Placebo16

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Number of Participants With Improved Duration of Brief Pain Attacks Based on NPSI - Duration (Item 4)

NPSI - Temporal item which assesses the duration (number of hours during the last 24 hours) of spontaneous ongoing pain. Improved duration would be a decrease in the number of hours of spontaneous ongoing pain during the last 24 hours compared to baseline. (NCT00407745)
Timeframe: Baseline, Week 16

Interventionparticipants (Number)
Pregabalin39
Placebo28

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Number of Participants With Improvement in the Number of Attacks Based on NPSI - Number of Attacks (Item 7)

NPSI - Temporal item which assesses the paroxysmal pain (number of pain attacks during the last 24 hours). Improvement in the number of attacks would be a decrease in the number of paroxysms during the last 24 hours compared to baseline. (NCT00407745)
Timeframe: Baseline, Week 16

Interventionparticipants (Number)
Pregabalin48
Placebo38

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Change From Baseline in Hospital and Anxiety Depression Scale (HADS) - Anxiety

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
BaselineChange from baseline at endpoint (n = 100, 99)
Placebo6.9-0.8
Pregabalin6.7-1.4

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Change From Baseline in Hospital and Anxiety Depression Scale (HADS) - Depression

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
BaselineChange from baseline at endpoint (n = 100, 99)
Placebo6.3-0.5
Pregabalin5.2-1.0

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Awaken Short of Breath or With a Headache

Participant rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 105, 105)Change from baseline at endpoint (n = 100, 98)
Placebo12.8-0.2
Pregabalin15.0-6.2

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Adequacy

Participant rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 105, 104)Change from baseline at endpoint (n = 100, 97)
Placebo43.85.7
Pregabalin42.311.6

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Quantity

Participant rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 104,105)Change from baseline at endpoint (n = 100, 98)
Placebo6.20.2
Pregabalin5.90.6

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Snoring

Participant rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 105, 104)Change from baseline at endpoint (n = 100, 97)
Placebo35.6-4.7
Pregabalin31.22.2

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Somnolence

Participant rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 105, 105)Change from baseline at endpoint (n = 100, 97)
Placebo39.7-4.9
Pregabalin36.3-0.8

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS)- 9-Item Overall Sleep Problems Index

Participant rated questionnaire to assess sleep quality and quantity. Consists of a 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
Baseline (n = 105, 103)Change from baseline at endpoint (n = 100, 95)
Placebo45.9-5.8
Pregabalin45.7-10.8

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Change From Baseline in Modified Brief Pain Inventory Interference Scale (10-Item) (mBPI-10) Total Score

"The Modified Brief Pain Inventory (mBPI-10) Interference Scale is a self administered questionnaire that assessed pain interference with functional activities over the past week. The items were measured on an 11 point scale, ranging from does not interfere (0) to completely interferes (10). A composite score, the pain interference index, was calculated by averaging the 10 items that comprised the scale." (NCT00407745)
Timeframe: Baseline, Week 16

,
Interventionscore on scale (Mean)
BaselineChange from baseline at endpoint (n = 100, 99)
Placebo4.9-1.1
Pregabalin4.7-1.6

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Percent Change From Baseline in Seizure Frequency in Participants Who Had <=6 Seizures and >6 Seizures During the Baseline Period

Negative values indicate a decrease in seizure frequency; positive values reflect an increase in seizure frequency. (NCT00407797)
Timeframe: Week 9 to Week 21 or End of Treatment (early termination)

Interventionpercent change (Mean)
<= 6 seizures at Baseline (n=50)> 6 seizures at Baseline (n=71)
Pregabalin-57.9-46.5

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Percent Change From Baseline in 28 Day Partial Seizure Rate During Treatment Observation Phase

28-day seizure rate (at observation period [obs]) = [(number of seizures obs ) divided by (duration of period based on observed last dosing date and Visit 3 [Week 9] date)] * 28. Percent change = [(28-day seizure rate obs minus 28-day seizure rate at baseline [b]) divided by 28-day seizure rate b] * 100. Negative values indicate a decrease in seizure frequency and positive values reflect an increase in seizure frequency. (NCT00407797)
Timeframe: Week 9 to Week 21 or End of Treatment (early termination)

Interventionpercent change (Mean)
Pregabalin-51.2

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Percent Change From Baseline in 28-Day Partial Seizure Frequency at Week 21

Percent change from Baseline = [(28-day seizure rate at 21 weeks minus 28-day seizure rate at baseline [b]) divided by (28-day seizure rate b) * 100. Negative values indicate a decrease in seizure frequency, positive values reflect an increase in seizure frequency. (NCT00407797)
Timeframe: Week 21 or End of Treatment (early termination)

Interventionpercent change (Mean)
Pregabalin-36.0

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Percent of Participants With >=50% Reduction in Seizure Frequency (28-day Seizure Rate) Between Baseline and Final 4 Weeks of the Treatment Observation Period

(NCT00407797)
Timeframe: Week 17 to Week 21 (or Last 4 Weeks of Treatment after Week 9)

Interventionpercent of participants (Number)
Pregabalin63.6

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Percent of Participants With >=75% Reduction in Seizure Frequency (28-day Seizure Rate) Between Baseline and Final 4 Weeks of the Treatment Observation Period

(NCT00407797)
Timeframe: Week 17 through Week 21 (or Last 4 Weeks of Treatment after Week 9)

Interventionpercent of participants (Number)
Pregabalin48.8

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Percent of Seizure Free Participants During the Last 4 Weeks of the Treatment Observation Period

Seizure-free = no seizures during last 4 weeks of observation period (100 percent reduction in seizures from baseline). (NCT00407797)
Timeframe: Week 17 to Week 21 (or Last 4 Weeks of Treatment after Week 9)

Interventionpercent of participants (Number)
Pregabalin40.5

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Percent of Seizure- Free Participants During the Treatment Observation Period

Seizure-free = no seizures during observation period (100 percent reduction in seizures from baseline). (NCT00407797)
Timeframe: Week 9 to Week 21 or Early Termination (end of treatment)

Interventionpercent of participants (Number)
Pregabalin20.7

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Response Ratio (RR)

Response ratio (RR) = comparison between baseline 28-seizure frequency with the 12 week observation phase. RR = [(28-day seizure rate in observation period [obs] minus 28-day seizure rate at baseline [b] ) divided by (28-day seizure rate obs plus 28-day seizure rate b)] * 100. Range: -100 to 100; negative values for the RR indicate reductions in seizures. (NCT00407797)
Timeframe: Week 9 to Week 21 or End of Treatment (early termination)

Interventionratio (Mean)
Pregabalin-45.1

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Change From Baseline in Hospital Anxiety and Depression Scale (HADS)

Participant rated questionnaire with 2 subscales: HADS-A assesses generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D: state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale has 7 items; range: 0 (no anxiety or depression) to 3 (severe anxiety or depression). Total score 0 to 21 for each subscale; higher score = greater severity of symptoms. Negative value = reduction from baseline (b), positive value = increase from b. Change = (HADS score at observation period minus HADS score at b) divided by HADS score b. (NCT00407797)
Timeframe: Week 21, LOCF

Interventionscores on scale (Mean)
Week 21: AnxietyLOCF: AnxietyWeek 21: DepressionLOCF: Depression
Pregabalin-1.4-1.4-0.8-0.7

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Change From Baseline in Sleep Interference: Medical Outcome Sleep Scale (MOS)

Participant rated questionnaire to assess sleep quality and quantity; 9-item overall sleep problems index and 7 subscales. Sleep disturbance, snoring, awaken short of breath, somnolence, and adequacy subscale scores (s) rated 1 (all the time) to 6 (none of the time); transformed s; total range (r): 0 to 100; higher s = greater intensity of attribute; negative values (v) = reduction from baseline (b), positive v = increase from b. Sleep Quantity score r: 0-24 hours. Higher s = greater quantity of sleep. Change = (MOS score at observation period minus MOS score at b) divided by MOS score b. (NCT00407797)
Timeframe: Week 21, LOCF

Interventionscores on scale (Mean)
Week 21: Sleep DisturbanceLOCF: Sleep DisturbanceWeek 21: SnoringLOCF: SnoringWeek 21: Awaken Short of BreathLOCF: Awaken Short of BreathWeek 21: AdequacyLOCF: AdequacyWeek 21: SomnolenceLOCF: SomnolenceWeek 21: 9-Item Overall Sleep Problem IndexLOCF: 9-Item Overall Sleep Problem IndexWeek 21: Sleep QuantityLOCF: Sleep Quantity
Pregabalin-3.8-4.01.42.20.70.34.24.00.4-0.8-2.2-2.50.40.4

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Change From Baseline in Sleep Interference: Medical Outcome Sleep Scale (MOS): Optimal Sleep Subscale

Optimal Sleep subscale of the MOS subject rated questionnaire to assess sleep quality and quantity. Optimal Sleep (1 of 7 subscales) was derived from sleep quantity: average hours of sleep each night during the past week. Number of subjects with response: YES=1 (optimal sleep: quantity of sleep was 7 or 8 hours per night) or No= 0 (no optimal sleep). Negative value indicates a decrease in attribute; positive value indicates an increase in attribute. Change = (MOS score at observation period minus MOS score at baseline [b]) divided by MOS score b. (NCT00407797)
Timeframe: Week 21, LOCF

Interventionscores on scale (Mean)
Week 21LOCF
Pregabalin0.10.1

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Treatment Satisfaction: Patient General Impression to Change (PGIC)

Patient General Impression to Change (PGIC): participant rated instrument to measure participant's change in overall status since beginning study medication on a 7-point scale; range: 1 (very much improved) to 7 (very much worse). Not done = participant did not complete the PGIC. (NCT00407797)
Timeframe: Week 21, LOCF

Interventionpercent of participants (Number)
Week 21: Very Much ImprovedWeek 21: Much ImprovedWeek 21: Minimally ImprovedWeek 21: No ChangeWeek 21: Minimally WorseWeek 21: Much WorseWeek 21: Very Much WorseWeek 21: Not DoneLOCF: Very Much ImprovedLOCF: Much ImprovedLOCF: Minimally ImprovedLOCF: No ChangeLOCF: Minimally WorseLOCF: Much WorseLOCF: Very Much WorseLOCF: Not Done
Pregabalin22.452.613.84.31.71.70.92.620.751.112.64.41.51.50.77.4

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Change in HAM-A Total Score at Weekly Visits

Change: score at each study week minus score at baseline. HAM-A, a clinician-rated interview, measures presence of anxiety-related symptoms in 14 areas including anxiety, tension, depressed mood, palpitations, breathing difficulties, sleep disturbances, & restlessness. Total score ranges from 0 to 56; higher score indicates greater anxiety. (NCT00413010)
Timeframe: Baseline, Weeks 1 through Week 8

,
Interventionscore on scale (Least Squares Mean)
Week 1 (n=164;n=169)Week 2 (n=166;n=163)Week 3 (n=157;n=160)Week 4 (n=153;n=150)Week 5 (n=135;n=130)Week 6 (n=122;n=125)Week 8 (n=126;n=127)
Placebo-3.1-5.2-5.5-7.0-7.6-8.0-8.0
Pregabalin-4.4-6.3-7.0-8.3-8.4-9.2-9.3

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Change in Hamilton Depression Rating Scale (HAM-D) Total Score

Change: score at each study week minus score at baseline. HAM-D, clinician-rated interview, measures presence of depressive symptoms in 17 areas (symptoms such as depressed mood, guilty feelings, suicide, sleep disturbances, anxiety levels, & weight loss). Total score ranges from 0 to 52; higher scores indicate more depression. (NCT00413010)
Timeframe: Weeks 1 through Week 8

,
Interventionscore on scale (Least Squares Mean)
Week 1 n=165,168Week 2 n=165,164Week 3 n=156,160Week 4 n=153, 149Week 5 n=135, 130Week 6 n=122, 125Week 8 n= 126, 127
Placebo-1.3-2.4-2.8-3.3-3.9-3.8-3.8
Pregabalin-2.1-3.1-3.5-4.7-4.3-4.7-4.8

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Clinical Global Impression of Severity (CGI-S) Score

CGI-S is a clinician-rated instrument measuring the severity of a subject's symptoms on a 7-point categorical scale. Scores range from 1 (not at all ill) to 7 (among the most extremely ill patients). Higher score indicates that the subject is more ill. (NCT00413010)
Timeframe: Week 8

,
Interventionparticipants (Number)
Normal, not ill at allBorderline, mentally illMildly illModerately illMarkedly illSeverely illAmong the most extremely illNot assessed
Placebo183763488101
Pregabalin284949462200

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Number of Responders Using Hamilton Anxiety Rating Scale (HAM-A)

Responders = YES if subjects achieved a >= 50% decrease in HAM-A total score from Baseline to respective study week. HAM-A is a clinician-rated interview measuring the presence of anxiety-related symptoms in 14 areas. Total score ranges from 0 to 56; higher score indicates greater anxiety. (NCT00413010)
Timeframe: Weeks 1 through Week 8

,
Interventionparticipants (Number)
Week 1 Responder: YesWeek 1 Responder: NoWeek 2 Responder: YesWeek 2 Responder: NoWeek 3 Responder: YesWeek 3 Responder: NoWeek 4 Responder: YesWeek 4 Responder: NoWeek 5 Responder: YesWeek 5 Responder: NoWeek 6 Responder: YesWeek 6 Responder: NoWeek 8 Responder: YesWeek 8 Responder: NoWeek 8 (LOCF) Responder: YesWeek 8 (LOCF) Responder: No
Placebo816126137231374610446844877478062114
Pregabalin21143391275110664895877576563638493

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Number of Responders Using Clinical Global Impression of Improvement (CGI-I) Score

Responders = YES using CGI-I if score indicated much improved or very much improved at the last study week. CGI-I is a clinician-rated instrument that measures change in subject's overall status on a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). (NCT00413010)
Timeframe: Week 1 through Week 8

,
Interventionparticipants (Number)
Week 1: YesWeek 1: NoWeek 2: YesWeek 2: NoWeek 3: YesWeek 3: NoWeek 4: YesWeek 4: NoWeek 5: YesWeek 5: NoWeek 6: YesWeek 6: NoWeek 8: YesWeek 8: NoWeek 8 (LOCF): YesWeek 8 (LOCF): No
Placebo4912074897686886181507649824511066
Pregabalin6210194729362975589458338804311361

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Subjects in Remission Using Hamilton Anxiety Rating Scale (HAM-A) Total Score

Participant in remission defined as HAM-A total score of <= 7. HAM-A=clinician-rated interview measuring presence of anxiety-related symptoms in 14 areas including anxiety, tension, depressed mood, palpitations, breathing difficulties, sleep disturbances, & restlessness. Total score ranges 0 - 56; higher score indicates greater anxiety. (NCT00413010)
Timeframe: Week 1 through Week 8

,
Interventionparticipants (Number)
Week 1 Remission: YesWeek 1 Remission: NoWeek 2 Remission: YesWeek 2 Remission: NoWeek 3 Remission: YesWeek 3 Remission: NoWeek 4 Remission: YesWeek 4 Remission: NoWeek 5 Remission: YesWeek 5 Remission: NoWeek 6 Remission: YesWeek 6 Remission: NoWeek 8 Remission: YesWeek 8 Remission: NoWeek 8 (LOCF) Remission: YesWeek 8 (LOCF) Remission: No
Placebo5164151481814229121301003293319642134
Pregabalin1215222144321254311039963785408655122

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Change in Hamilton Anxiety Rating Scale (HAM-A) Total Scores

Change from baseline: average across visit weeks using mixed model. HAM-A=clinician-rated interview measuring presence of anxiety-related symptoms in 14 areas including anxiety, tension, depressed mood, palpitations, breathing difficulties, sleep disturbances, & restlessness. Total score ranges from 0 to 56; higher score indicates greater anxiety. (NCT00413010)
Timeframe: Baseline, 8 weeks

Interventionscore on scale (Least Squares Mean)
Pregabalin-7.6
Placebo-6.4

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Time to Onset of Sustained Hamilton Anxiety Rating Scale (HAM-A) Improvement

Time to sustained improvement was defined as time to 50% or greater reduction in HAM-A total score from Baseline, which was sustained for the remainder of the study. HAM-A is a clinician-rated interview measuring the presence of anxiety-related symptoms in 14 areas. Total score ranges from 0 to 56; a higher score indicates greater anxiety. (NCT00413010)
Timeframe: Week 8

Interventiondays (Median)
Pregabalin57

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Summary of Adverse Events

Number of subjects with all causality adverse events, serious adverse events, severe adverse events, adverse events resulted in discontinuation, dose reduced or temporary discontinuation. Subjects are counted only once per treatment in each row. (NCT00424372)
Timeframe: 52 weeks

Interventionsubjects (Number)
Subjects with adverse eventsSubjects with serious adverse eventsSubjects with severe adverse eventsSubjects discontinued due to adverse eventsDose reduced or temporary discontinuation
Pregabalin1241451734

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Short-Form McGill Pain Questionnaire the Efficacy of Change: Visual Analog Scale

Ranges: 0-100 mm. Larger scale indicate more severe pain. Baseline: The last evaluation on or before Day 1 of double-blind for subjects that took pregabalin in double-blind and last visit <= Day 1 of open-label for subjects that took placebo in double-blind. Endpoint: The last evaluation during dose adjustment/maintenance step of open-label. (NCT00424372)
Timeframe: 52 weeks

Interventionmm (Mean)
BaselineWeek 52EndpointChange from Baseline to Endpoint
Pregabalin62.028.333.7-28.3

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Short-Form McGill Pain Questionnaire the Efficacy of Change: Total Score

Score ranges: 0-45. Higher scores indicate more severe pain. Baseline: The last evaluation on or before Day 1 of double-blind for subjects that took pregabalin in double-blind and last visit <= Day 1 of open-label for subjects that took placebo in double-blind. Endpoint: The last evaluation during dose adjustment/maintenance step of open-label. (NCT00424372)
Timeframe: 52 weeks

Interventionscore on scale (Mean)
BaselineWeek 52EndpointChange from Baseline to Endpoint
Pregabalin14.76.18.2-6.5

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Short-Form McGill Pain Questionnaire the Efficacy of Change: Sensory Score

Score ranges: 0-33. Higher scores indicate more severe pain. Baseline: The last evaluation on or before Day 1 of double-blind for subjects that took pregabalin in double-blind and last visit <= Day 1 of open-label for subjects that took placebo in double-blind. Endpoint: The last evaluation during dose adjustment/maintenance step of open-label. (NCT00424372)
Timeframe: 52 weeks

Interventionscore on scale (Mean)
BaselineWeek 52EndpointChange from Baseline to Endpoint
Pregabalin11.35.16.7-4.8

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Short-Form McGill Pain Questionnaire the Efficacy of Change: Present Pain Intensity

Score ranges: 0-5. Higher scores indicate more severe pain. Baseline: The last evaluation on or before Day 1 of double-blind for subjects that took pregabalin in double-blind and last visit <= Day 1 of open-label for subjects that took placebo in double-blind. Endpoint: The last evaluation during dose adjustment/maintenance step of open-label. (NCT00424372)
Timeframe: 52 weeks

Interventionscore on scale (Mean)
BaselineWeek 52EndpointChange from Baseline to Endpoint
Pregabalin2.81.41.7-1.1

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Short-Form McGill Pain Questionnaire the Efficacy of Change: Affective Score

Score ranges: 0-12. Higher scores indicate more severe pain. Baseline: The last evaluation on or before Day 1 of double-blind for subjects that took pregabalin in double-blind and last visit <= Day 1 of open-label for subjects that took placebo in double-blind. Endpoint: The last evaluation during dose adjustment/maintenance step of open-label. (NCT00424372)
Timeframe: 52 weeks

Interventionscore on scale (Mean)
BaselineWeek 52EndpointChange from Baseline to Endpoint
Pregabalin3.41.01.7-1.8

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Time to Reach Maximum Observed Plasma Concentration (Tmax): Single-Dose Analysis

Tmax for participants who received matching placebo from Day 1 to Day 7 and pregabalin on Day 8 morning is reported (single-dose participants). (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

Interventionhours (Median)
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 1 to 23 Months)1.00
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 1 to 23 Months)0.967
Placebo, Pregabalin 5 mg/kg (Age Cohort: 1 to 23 Months)1.13
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 1 to 23 Months)1.00
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 2 to 6 Years)0.450
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 2 to 6 Years)1.00
Placebo, Pregabalin 5 mg/kg (Age Cohort: 2 to 6 Years)1.00
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 2 to 6 Years)1.98
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 7 to 11 Years)1.00
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 7 to 11 Years)0.583
Placebo, Pregabalin 5 mg/kg (Age Cohort: 7 to 11 Years)2.00
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 7 to 11 Years)4.00
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 12 to 16 Years)4.05
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 12 to 16 Years)1.00

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Plasma Decay Half-Life (t1/2): Single-Dose Analysis

Plasma decay half-life is the time measured for the plasma concentration to decrease by one half. t1/2 for participants who received matching placebo from Day 1 to Day 7 and pregabalin on Day 8 morning is reported (single-dose participants). (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

Interventionhours (Mean)
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 1 to 23 Months)2.64
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 1 to 23 Months)3.78
Placebo, Pregabalin 5 mg/kg (Age Cohort: 1 to 23 Months)3.76
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 1 to 23 Months)3.22
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 2 to 6 Years)3.88
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 2 to 6 Years)2.70
Placebo, Pregabalin 5 mg/kg (Age Cohort: 2 to 6 Years)3.83
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 2 to 6 Years)3.08
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 7 to 11 Years)4.77
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 7 to 11 Years)4.02
Placebo, Pregabalin 5 mg/kg (Age Cohort: 7 to 11 Years)3.13
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 7 to 11 Years)6.54
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 12 to 16 Years)5.80
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 12 to 16 Years)3.85

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Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau): Multiple-Dose Analysis

Area under the curve from time zero to the end of dosing interval (AUCtau), where dosing interval was 12 hours, for participants who received pregabalin from Day 1 to Day 8 morning is reported (multiple-dose participants). Results are normalized to individual participant's Day 8 dose. (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12 hours post-dose on Day 8

Intervention(microgram*hour/milliliter)/(mg/kg) (Geometric Mean)
Pregabalin 2.5 mg/kg/Day (Age Cohort: 1 to 23 Months)7.614
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)7.563
Pregabalin 10 mg/kg/Day (Age Cohort: 1 to 23 Months)7.595
Pregabalin 15 mg/kg/Day (Age Cohort: 1 to 23 Months)NA
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)7.962
Pregabalin 5 mg/kg/Day (Age Cohort: 2 to 6 Years)NA
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)NA
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)8.203
Pregabalin 2.5 mg/kg/Day (Age Cohort: 7 to 11 Years)11.64
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)9.571
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)7.59
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)NA
Pregabalin 2.5 mg/kg/Day (Age Cohort: 12 to 16 Years)10.20
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)13.07
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)9.642
Pregabalin 15 mg/kg/Day (Age Cohort: 12 to 16 Years)14.4

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Apparent Oral Clearance (CL/F): Multiple-Dose Analysis

Clearance (CL) of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed (F). Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood. CL/F for participants who received pregabalin from Day 1 to Day 8 morning is reported (multiple-dose participants). (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

Interventionmilliliter/minute (mL/min) (Geometric Mean)
Pregabalin 2.5 mg/kg/Day (Age Cohort: 1 to 23 Months)19.00
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)17.70
Pregabalin 10 mg/kg/Day (Age Cohort: 1 to 23 Months)18.54
Pregabalin 15 mg/kg/Day (Age Cohort: 1 to 23 Months)NA
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)34.18
Pregabalin 5 mg/kg/Day (Age Cohort: 2 to 6 Years)NA
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)NA
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)30.49
Pregabalin 2.5 mg/kg/Day (Age Cohort: 7 to 11 Years)58.23
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)49.49
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)63.7
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)NA
Pregabalin 2.5 mg/kg/Day (Age Cohort: 12 to 16 Years)90.56
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)78.38
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)85.87
Pregabalin 15 mg/kg/Day (Age Cohort: 12 to 16 Years)73.1

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Plasma Decay Half-Life (t1/2): Multiple-Dose Analysis

Plasma decay half-life is the time measured for the plasma concentration to decrease by one half. t1/2 for participants who received pregabalin from Day 1 to Day 8 morning is reported (multiple-dose participants). (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

Interventionhours (Mean)
Pregabalin 2.5 mg/kg/Day (Age Cohort: 1 to 23 Months)4.433
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)3.397
Pregabalin 10 mg/kg/Day (Age Cohort: 1 to 23 Months)3.263
Pregabalin 15 mg/kg/Day (Age Cohort: 1 to 23 Months)NA
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)3.90
Pregabalin 5 mg/kg/Day (Age Cohort: 2 to 6 Years)NA
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)3.523
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)3.520
Pregabalin 2.5 mg/kg/Day (Age Cohort: 7 to 11 Years)4.287
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)4.113
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)NA
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)NA
Pregabalin 2.5 mg/kg/Day (Age Cohort: 12 to 16 Years)4.960
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)3.953
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)5.643
Pregabalin 15 mg/kg/Day (Age Cohort: 12 to 16 Years)6.61

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Number of Participants With Clinically Significant Change in Physical and Neurological Findings

Full physical examination included examination of the abdomen, breasts, lungs, lymph nodes, mouth, genitourinary, musculoskeletal and neurological systems, skin, extremities, head, heart, ears, eyes, neck, nose, ocular fundi, throat and thyroid gland. The neurological exam was performed by a pediatric neurologist or qualified investigator. (NCT00437281)
Timeframe: Baseline up to 7 days post-last dose of study medication

Interventionparticipants (Number)
Pregabalin 2.5 mg/kg/Day (Age Cohort: 1 to 23 Months)0
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)0
Pregabalin 10 mg/kg/Day (Age Cohort: 1 to 23 Months)0
Pregabalin 15 mg/kg/Day (Age Cohort: 1 to 23 Months)0
Placebo (Age Cohort: 1 to 23 Months)0
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)1
Pregabalin 5 mg/kg/Day (Age Cohort: 2 to 6 Years)0
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)0
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)0
Placebo (Age Cohort: 2 to 6 Years)1
Pregabalin 2.5 mg/kg/Day (Age Cohort: 7 to 11 Years)0
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)0
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)1
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)1
Placebo (Age Cohort: 7 to 11 Years)0
Pregabalin 2.5 mg/kg/Day (Age Cohort: 12 to 16 Years)0
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)0
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)1
Pregabalin 15 mg/kg/Day (Age Cohort: 12 to 16 Years)0
Placebo (Age Cohort: 12 to 16 Years)0

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Maximum Observed Plasma Concentration (Cmax): Single-Dose Analysis

Cmax for participants who received matching placebo from Day 1 to Day 7 and pregabalin on Day 8 morning is reported (single-dose participants). Results are normalized to individual participant's Day 8 dose. (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

Intervention(microgram/milliliter)/(mg/kg) (Geometric Mean)
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 1 to 23 Months)1.51
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 1 to 23 Months)1.81
Placebo, Pregabalin 5 mg/kg (Age Cohort: 1 to 23 Months)1.18
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 1 to 23 Months)1.52
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 2 to 6 Years)1.93
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 2 to 6 Years)1.50
Placebo, Pregabalin 5 mg/kg (Age Cohort: 2 to 6 Years)1.70
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 2 to 6 Years)1.54
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 7 to 11 Years)1.31
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 7 to 11 Years)2.29
Placebo, Pregabalin 5 mg/kg (Age Cohort: 7 to 11 Years)1.24
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 7 to 11 Years)1.28
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 12 to 16 Years)1.81
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 12 to 16 Years)1.79

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Maximum Observed Plasma Concentration (Cmax): Multiple-Dose Analysis

Cmax for participants who received pregabalin from Day 1 to Day 8 morning is reported (multiple-dose participants). Results are normalized to individual participant's Day 8 dose. (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

Intervention(microgram/milliliter)/(mg/kg) (Geometric Mean)
Pregabalin 2.5 mg/kg/Day (Age Cohort: 1 to 23 Months)1.468
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)1.577
Pregabalin 10 mg/kg/Day (Age Cohort: 1 to 23 Months)1.496
Pregabalin 15 mg/kg/Day (Age Cohort: 1 to 23 Months)NA
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)1.601
Pregabalin 5 mg/kg/Day (Age Cohort: 2 to 6 Years)NA
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)NA
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)1.856
Pregabalin 2.5 mg/kg/Day (Age Cohort: 7 to 11 Years)2.350
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)1.660
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)0.945
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)NA
Pregabalin 2.5 mg/kg/Day (Age Cohort: 12 to 16 Years)1.762
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)2.538
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)1.355
Pregabalin 15 mg/kg/Day (Age Cohort: 12 to 16 Years)1.94

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Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - ∞)]: Single-Dose Analysis

AUC (0 - ∞)= Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0 - ∞). It is obtained from AUC (0 - t) plus AUC (t - ∞). AUC (0 - ∞) for participants who received matching placebo from Day 1 to Day 7 and pregabalin on Day 8 morning is reported (single-dose participants). Results are normalized to individual participant's Day 8 dose. (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

Intervention(microgram*hour/milliliter)/(mg/kg) (Geometric Mean)
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 1 to 23 Months)6.70
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 1 to 23 Months)8.10
Placebo, Pregabalin 5 mg/kg (Age Cohort: 1 to 23 Months)7.05
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 1 to 23 Months)7.02
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 2 to 6 Years)8.30
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 2 to 6 Years)6.38
Placebo, Pregabalin 5 mg/kg (Age Cohort: 2 to 6 Years)8.76
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 2 to 6 Years)9.16
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 7 to 11 Years)10.0
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 7 to 11 Years)10.1
Placebo, Pregabalin 5 mg/kg (Age Cohort: 7 to 11 Years)8.00
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 7 to 11 Years)15.9
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 12 to 16 Years)13.8
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 12 to 16 Years)10.6

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Apparent Oral Clearance (CL/F): Single-Dose Analysis

Clearance (CL) of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed (F). Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood. CL/F for participants who received matching placebo from Day 1 to Day 7 and pregabalin on Day 8 morning is reported (single-dose participants). (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

InterventionmL/min (Geometric Mean)
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 1 to 23 Months)31.5
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 1 to 23 Months)24.7
Placebo, Pregabalin 5 mg/kg (Age Cohort: 1 to 23 Months)20.1
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 1 to 23 Months)28.0
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 2 to 6 Years)32.3
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 2 to 6 Years)60.1
Placebo, Pregabalin 5 mg/kg (Age Cohort: 2 to 6 Years)38.8
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 2 to 6 Years)45.5
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 7 to 11 Years)58.2
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 7 to 11 Years)45.8
Placebo, Pregabalin 5 mg/kg (Age Cohort: 7 to 11 Years)64.8
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 7 to 11 Years)54.3
Placebo, Pregabalin 1.25 mg/kg (Age Cohort: 12 to 16 Years)99.6
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 12 to 16 Years)90.0

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Number of Treatment-Emergent Adverse Events (AEs) by Severity: Open-label Treatment

Analysis for severity of AEs was performed separately for double-blind and open-label treatment. AE = any untoward medical occurrence in participant who received study drug without regard to possibility of causal relationship. AEs were classified as mild, moderate and severe based on severity assessment: Mild = no interference with participant's usual function; Moderate = some interference with participant's usual function; Severe = significant interference with participant's usual function. Treatment-emergent events for open-label treatment included events between Day 8 and 28 days after the open-label dose that were absent before treatment or that worsened relative to pretreatment state. Participants may experience more than 1 AE. (NCT00437281)
Timeframe: Day 8 up to 28 days after open-label dose of study medication

,,,,,,,,,,,,,,,,,,,
Interventionadverse events (Number)
MildModerateSevere
Placebo (Age Cohort: 1 to 23 Months)210
Placebo (Age Cohort: 12 to 16 Years)000
Placebo (Age Cohort: 2 to 6 Years)110
Placebo (Age Cohort: 7 to 11 Years)011
Pregabalin 10 mg/kg/Day (Age Cohort: 1 to 23 Months)000
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)000
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)000
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)100
Pregabalin 15 mg/kg/Day (Age Cohort: 1 to 23 Months)100
Pregabalin 15 mg/kg/Day (Age Cohort: 12 to 16 Years)000
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)010
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)000
Pregabalin 2.5 mg/kg/Day (Age Cohort: 1 to 23 Months)000
Pregabalin 2.5 mg/kg/Day (Age Cohort: 12 to 16 Years)000
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)000
Pregabalin 2.5 mg/kg/Day (Age Cohort: 7 to 11 Years)000
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)000
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)011
Pregabalin 5 mg/kg/Day (Age Cohort: 2 to 6 Years)000
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)000

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Number of Treatment-Emergent Adverse Events (AEs) by Severity: Double-blind Treatment

Analysis for severity of AEs was performed separately for double-blind and open-label treatment. AE = any untoward medical occurrence in participant who received study drug without regard to possibility of causal relationship. AEs were classified as mild, moderate and severe based on severity assessment: Mild = no interference with participant's usual function; Moderate = some interference with participant's usual function; Severe = significant interference with participant's usual function. Treatment-emergent events for double-blind treatment included events between baseline and Day 7 that were absent before treatment or that worsened relative to pretreatment state. Participants may experience more than 1 AE. (NCT00437281)
Timeframe: Baseline to Day 7

,,,,,,,,,,,,,,,,,,,
Interventionadverse events (Number)
MildModerateSevere
Placebo (Age Cohort: 1 to 23 Months)110
Placebo (Age Cohort: 12 to 16 Years)000
Placebo (Age Cohort: 2 to 6 Years)1330
Placebo (Age Cohort: 7 to 11 Years)200
Pregabalin 10 mg/kg/Day (Age Cohort: 1 to 23 Months)200
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)1140
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)500
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)300
Pregabalin 15 mg/kg/Day (Age Cohort: 1 to 23 Months)411
Pregabalin 15 mg/kg/Day (Age Cohort: 12 to 16 Years)230
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)500
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)523
Pregabalin 2.5 mg/kg/Day (Age Cohort: 1 to 23 Months)010
Pregabalin 2.5 mg/kg/Day (Age Cohort: 12 to 16 Years)010
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)120
Pregabalin 2.5 mg/kg/Day (Age Cohort: 7 to 11 Years)020
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)210
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)211
Pregabalin 5 mg/kg/Day (Age Cohort: 2 to 6 Years)400
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)300

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Time to Reach Maximum Observed Plasma Concentration (Tmax): Multiple-Dose Analysis

Tmax for participants who received pregabalin from Day 1 to Day 8 morning is reported (multiple-dose participants). (NCT00437281)
Timeframe: Pre-dose, 0.5, 1, 2, 4, 8, 12, 24 hours post-dose on Day 8

Interventionhours (Median)
Pregabalin 2.5 mg/kg/Day (Age Cohort: 1 to 23 Months)0.617
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)1.05
Pregabalin 10 mg/kg/Day (Age Cohort: 1 to 23 Months)1.12
Pregabalin 15 mg/kg/Day (Age Cohort: 1 to 23 Months)2.49
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)0.500
Pregabalin 5 mg/kg/Day (Age Cohort: 2 to 6 Years)1.67
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)2.62
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)1.00
Pregabalin 2.5 mg/kg/Day (Age Cohort: 7 to 11 Years)0.583
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)1.00
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)4.00
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)0.790
Pregabalin 2.5 mg/kg/Day (Age Cohort: 12 to 16 Years)0.500
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)0.583
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)2.09
Pregabalin 15 mg/kg/Day (Age Cohort: 12 to 16 Years)2.15

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Renal Clearance (CLr): Single-Dose Analysis

Renal clearance is the volume of plasma from which the drug is completely removed by the kidney in a given amount of time. CLr for participants who received matching placebo from Day 1 to Day 7 and pregabalin on Day 8 morning was to be reported (single-dose participants). (NCT00437281)
Timeframe: 0 to 12 hours post-dose, 12 to 24 hours post-dose on Day 8

InterventionmL/min (Geometric Mean)
Placebo, Pregabalin 7.5 mg/kg (Age Cohort: 7 to 11 Years)42.6
Placebo, Pregabalin 2.5 mg/kg (Age Cohort: 12 to 16 Years)73.8

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Renal Clearance (CLr): Multiple-Dose Analysis

Renal clearance is the volume of plasma from which the drug is completely removed by the kidney in a given amount of time. CLr for participants who received pregabalin from Day 1 to Day 8 morning is reported (multiple-dose participants). (NCT00437281)
Timeframe: 0 to 12 hours post-dose, 12 to 24 hours post-dose on Day 8

InterventionmL/min (Geometric Mean)
Pregabalin 5 mg/kg/Day (Age Cohort: 1 to 23 Months)21.0
Pregabalin 2.5 mg/kg/Day (Age Cohort: 2 to 6 Years)8.77
Pregabalin 10 mg/kg/Day (Age Cohort: 2 to 6 Years)48.4
Pregabalin 15 mg/kg/Day (Age Cohort: 2 to 6 Years)11.5
Pregabalin 5 mg/kg/Day (Age Cohort: 7 to 11 Years)24.75
Pregabalin 10 mg/kg/Day (Age Cohort: 7 to 11 Years)55.9
Pregabalin 15 mg/kg/Day (Age Cohort: 7 to 11 Years)36.9
Pregabalin 5 mg/kg/Day (Age Cohort: 12 to 16 Years)NA
Pregabalin 10 mg/kg/Day (Age Cohort: 12 to 16 Years)69.16

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Change From Baseline in Visual Analogue Scale for Anxiety (VAS-Anxiety) Score Prior to Surgery

VAS-Anxiety was administered to measure pre-operative anxiety. Score: 0 = no anxiety to 100 = worst imaginable anxiety. (NCT00442546)
Timeframe: Day 1, 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, and 6 hours prior to surgery

,,
Interventionscores on a scale (Least Squares Mean)
Day 1 (n=83, 79, 78)1 hour (n=68, 67, 59)2 hours (n=75, 76, 63)3 hours (n=52, 58, 63)4 hours (n=19, 17, 20)5 hours (n=3, 4, 8)
Placebo6.9926.0856.4547.31310.133-15.145
Pregabalin (150 mg)6.1336.9743.7927.4778.21871.190
Pregabalin (300 mg)7.1033.2726.8187.5880.10929.819

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Cumulative Total Amount of Opioids Used During the Entire Hospital Stay

Total cumulative dose calculated as mg of oral morphine equivalent and included opioids given by any route (patient controlled analgesia [PCA] pump, parenteral bolus or oral). Results for daily total not including pregabalin (not an opioid). Statistical model included main effect of treatment group and center. 1 subject at 144 h, 300 mg=non-missing data. Due to small sample size (N=1, 300 mg; N=5, other groups) and large opioid consumption for another subject in same center, least squares mean (300 mg, 144 h) is negative. (NCT00442546)
Timeframe: 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 168 hours, 192 hours, 216 hours

,,
Interventionmg of oral morphine equivalent (Least Squares Mean)
24 hours (n=85, 86, 84)48 hours (n=82, 81, 83)72 hours (n=60, 60, 60)96 hours (n=32, 39, 35)120 hours (n=12, 6, 13)144 hours (n=5, 1, 5)
Placebo167.854122.83052.89535.33227.55973.956
Pregabalin (150 mg)151.79086.40255.65431.97627.52033.956
Pregabalin (300 mg)152.30693.84648.71324.75814.235-64.544

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Current Pain During the Hospital Stay Assessed by the Pain NRS

"Subject rated scale for average pain intensity over the last 24 hours. Pain was assessed using the question How much pain do you have right now? Scores range from 0 (no pain) to 10 (most possible pain)." (NCT00442546)
Timeframe: 4, 8, 12, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, 136, 144, 152, 160, 168, 176, 184, and 192 hours during the hospital stay

,,
Interventionscores on a scale (Least Squares Mean)
4 hours (n=84, 84, 78)8 hours (n=82, 79, 75)12 hours (n=66, 68, 64)24 hours (n=87, 88, 82)32 hours (n=79, 78, 69)40 hours (n=62, 55, 55)48 hours (n=78, 72, 70)56 hours (n=62, 56, 57)64 hours (n=46, 37, 45)72 hours (n=51, 45, 45)80 hours (n=19, 24, 24)88 hours (n=16, 13, 20)96 hours (n=16, 14, 20)104 hours (n=7, 3, 7)
Placebo4.3635.1194.7844.8364.3453.9023.7853.7604.5783.8264.2853.9142.6581.829
Pregabalin (150 mg)4.9405.0834.7794.5004.4503.7204.0954.0154.2203.9715.3124.2653.5253.501
Pregabalin (300 mg)3.5544.5294.0684.5454.5073.8214.0693.3583.4923.2712.4032.7672.5322.680

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Daily and Weekly Average Pain During the Hospital Stay and Post Discharge Assessed by the Pain NRS

Subject rated scale for average pain intensity over the last 24 hours. Scores range from 0 (no pain) to 10 (pain as bad as you can imagine). Weekly mean scores were calculated post-discharge. (NCT00442546)
Timeframe: 12 hours, 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 168 hours, and 192 hours during the hospital stay, Week 2, Week 4, Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
12 hours (n=29, 28, 28)24 hours (n=81, 79, 74)48 hours (n=78, 82, 75)72 hours (n=56, 51, 55)96 hours (n=20, 21, 26)120 hours (n=5, 3, 9)Week 2 (n=79, 72, 71)Week 4 (n=76, 65, 67)Week 6/ET (n=60, 54, 59)
Placebo6.7484.9184.5154.1864.7414.2873.9873.1632.389
Pregabalin (150 mg)5.7124.9614.5184.2814.8424.2113.6912.9562.374
Pregabalin (300 mg)4.8454.6144.3093.7403.1262.9403.9742.8452.385

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Daily and Weekly Worst Pain During the Hospital Stay and Post Discharge Assessed by the Pain Numerical Rating Scale (NRS)

Subject rated scale for worst pain over the last 24 hours. Scores ranged from 0 (no pain) to 10 (pain as bad as you can imagine). Weekly mean scores were calculated post-discharge. (NCT00442546)
Timeframe: 12 hours, 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, 144 hours, 168 hours, and 192 hours during the hospital stay, Week 2, Week 4, Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
12 hours (n=29, 28, 28)24 hours (n=82, 79, 74)48 hours (n=78, 82, 75)72 hours (n=56, 52, 55)96 hours (n=20, 21, 26)120 hours (n=5, 3, 9)Week 2 (n=79, 72, 72)Week 4 (n=76, 65, 67)Week 6/ET (n=61, 55, 59)
Placebo8.7707.2017.0795.9646.5567.0565.3964.2803.350
Pregabalin (150 mg)7.2177.4777.0416.3226.7035.9155.2554.1343.455
Pregabalin (300 mg)7.0027.2906.7405.9774.7114.3465.5924.0433.425

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Neuropathic Pain Symptom Inventory (NPSI)

NPSI: subject rated questionnaire to evaluate 5 dimensions of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia). Includes 10 descriptors ranging from 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each relevant dimension. Total score is calculated as the sum of scores of the 10 descriptors, range: 0-100. Higher score indicates greater intensity of pain. (NCT00442546)
Timeframe: Month 3, Month 6 (phone call)

,,
Interventionscores on a scale (Mean)
Burning Spontaneous Pain, Month 3, (n=23, 24, 29)Burning Spontaneous Pain, Month 6, (n=22, 15, 15)Pressing Spontaneous Pain, Month 3, (n=23, 24, 29)Pressing Spontaneous Pain, Month 6, (n=22, 15, 15)Paroxysmal Pain, Month 3, (n=23, 24, 29)Paroxysmal Pain, Month 6, (n=22, 15, 15)Evoked Pain, Month 3, (n=23, 24, 29)Evoked Pain, Month 6, (n=22, 15, 15)Paresthesia/Dysesthesia, Month 3, (n=23, 24, 29)Paresthesia/Dysesthesia, Month 6, (n=22, 15, 15)Total Score, Month 3, (n=23, 24, 29)Total Score, Month 6, (n=22, 15, 15)
Placebo0.8280.6670.9480.6331.0860.5330.9310.7110.6900.0330.0450.027
Pregabalin (150 mg)1.3481.0911.4571.4090.8041.2051.1740.6360.8480.7730.0580.051
Pregabalin (300 mg)0.7921.4000.9581.3331.6881.1331.3191.6670.6040.5000.0550.061

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Number of Subjects With Global Evaluation of Study Medication Scores

The Global Evaluation of Study Medication is a subject-administered single item instrument that records the subject's overall impression (global evaluation) of the study medication by asking the following question: how would you rate the study medication you received for pain? The subject chooses based on a scale of 1 (poor), 2 (fair), 3 (good), or 4 (excellent). (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, and Week 6/ET

,,
Interventionparticipants (Number)
Discharge, Excellent (n=85, 84, 78)Discharge, Good (n=85, 84, 78)Discharge, Fair (n=85, 84, 78)Discharge, Poor (n=85, 84, 78)Week 2, Excellent (n=22, 20, 18)Week 2, Good (n=22, 20, 18)Week 2, Fair (n=22, 20, 18)Week 2, Poor (n=22, 20, 18)Week 4, Excellent (n=30, 27, 19)Week 4, Good (n=30, 27, 19)Week 4, Fair (n=30, 27, 19)Week 4, Poor (n=30, 27, 19)Week 6/ET, Excellent (n=32, 31, 40)Week 6/ET, Good (n=32, 31, 40)Week 6/ET, Fair (n=32, 31, 40)Week 6/ET, Poor (n=32, 31, 40)
Placebo19391285913783151979
Pregabalin (150 mg)31311496113213114231766
Pregabalin (300 mg)274665104429123379510

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Pain-Related Sleep Interference Post Surgery

The NRS-Sleep: subject rated 11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]) rating how pain has interfered with sleep during the past 24 hours. Weekly mean scores were calculated post hospital discharge. (NCT00442546)
Timeframe: 24 hours, 48 hours, 72 hours, 96 hours 120 hours, 144 hours, 168 hours, and 192 hours post-surgery, Week 2, Week 4, Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
24 hours (n=86, 86, 81)48 hours (n=82, 82, 77)72 hours (n=59, 58, 59)96 hours (n=20, 21, 24)120 hours (n=6, 4, 7)Week 2 (n=80, 73, 71)Week 4 (n=76, 65, 67)Week 6/ET (n=61, 56, 57)
Placebo5.4814.0273.6453.2131.3284.2563.5322.748
Pregabalin (150 mg)4.4523.8302.9264.0873.1943.8373.1812.484
Pregabalin (300 mg)3.6713.4082.6091.6457.2374.1283.0422.592

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Pain Interference With Sleep as Measured by the m-BPI-sf

m-BPI-sf questionnaire (7-items) assessed pain interference with functional activities during the past 24 hours. Q5F: Subject response to 'how, during the past 24 hours, pain has interfered with your sleep'. Scale: 0 = does not interfere to 10 = completely interferes. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET, Month 3, Month 6

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=83, 80, 74)Week 2 (n=86, 78, 80)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 67, 71)Month 3 (n=30, 32, 35)Month 6 (n=31, 25, 27)
Placebo3.3073.5872.6682.0701.4990.778
Pregabalin (150 mg)2.6963.1392.4781.8471.2761.963
Pregabalin (300 mg)2.6423.0152.1661.7010.9411.005

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Pain Interference With Relations With People as Measured by the m-BPI-sf

m-BPI-sf questionnaire (7-items) assessed pain interference with functional activities during the past 24 hours. Q5E: Subject response to 'how, during the past 24 hours, pain has interfered with your relations with other people'. Scale: 0 = does not interfere to 10 = completely interferes. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET, Month 3, Month 6

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=83, 80, 74)Week 2 (n=86, 78, 80)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 67, 71)Month 3 (n=30, 32, 35)Month 6 (n=31, 25, 27)
Placebo2.6241.6711.1870.8981.3640.626
Pregabalin (150 mg)1.8371.5661.0040.5440.2530.802
Pregabalin (300 mg)1.7161.3701.1620.8450.8611.060

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Time From End of Surgery to Meet Hospital Discharge Criteria

The analysis was performed by Kaplan-Meier method with log-rank test. (NCT00442546)
Timeframe: time from end of surgery up to 192 hours post surgery

Interventionhours (Mean)
Pregabalin (150 mg)106.802
Pregabalin (300 mg)112.966
Placebo95.531

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Analgesics Used Post Discharge (Acetylsalicylic Acid [Week 2] and Paracetamol [Weeks 2, 4, and 6]

Weeks 2, 4, and 6 total daily doses were calculated by adding the cumulative doses during the 2 week period prior to the visit and dividing them by the number of days in the period. (NCT00442546)
Timeframe: Week 2, Week 4, Week 6/ET

,,
Interventionmg (Least Squares Mean)
Acetylsalicylic Acid, Week 2 (n=6, 1, 2)Paracetamol, Week 2 (n=7, 13, 7)Paracetamol, Week 4 (n=5, 12, 6)Paracetamol, Week 6/ET (n=6, 14, 5)
Placebo992.613630.787593.4981385.873
Pregabalin (150 mg)498.613603.496792.4341128.952
Pregabalin (300 mg)797.463665.574779.2261098.840

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Pain Interference With Normal Work as Measured by the m-BPI-sf

m-BPI-sf questionnaire (7-items) assessed pain interference with functional activities during the past 24 hours. Q5D: Subject response to 'how, during the past 24 hours, pain has interfered with your normal work (work outside the home and housework)'. Scale: 0 = does not interfere to 10 = completely interferes. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET, Month 3, Month 6

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=82, 77, 72)Week 2 (n=86, 78, 79)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 67, 71)Month 3 (n=30, 32, 35)Month 6 (n=31, 25, 27)
Placebo4.8733.8312.8952.0402.2641.029
Pregabalin (150 mg)4.8794.0102.8332.1331.7971.627
Pregabalin (300 mg)4.7383.5392.5002.1521.7311.349

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Pain Interference With Mood as Measured by the m-BPI-sf

m-BPI-sf questionnaire (7-items) assessed pain interference with functional activities during the past 24 hours. Q5B: Subject response to 'how, during the past 24 hours, pain has interfered with your mood'. Scale: 0 = does not interfere to 10 = completely interferes. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET, Month 3, Month 6

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=83, 80, 74)Week 2 (n=86, 78, 80)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 67, 71)Month 3 (n=30, 32, 35)Month 6 (n=31, 25, 27)
Placebo3.3542.5541.5301.3251.3340.369
Pregabalin (150 mg)2.5882.6401.5901.0530.6321.201
Pregabalin (300 mg)2.4182.1151.5111.1710.9560.832

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Time From End of Surgery to Actual Discharge

The analysis was performed by Kaplan-Meier method with log-rank test. (NCT00442546)
Timeframe: time from end of surgery up to 192 hours post surgery

Interventionhours (Mean)
Pregabalin (150 mg)75.709
Pregabalin (300 mg)73.906
Placebo78.451

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Pain Interference With General Activity as Measured by the m-BPI-sf

m-BPI-sf questionnaire (7-items) assessed pain interference with functional activities during the past 24 hours. Q5A: Subject response to 'how, during the past 24 hours, pain has interfered with your general activity. Scale: 0 = does not interfere to 10 = completely interferes. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET, Month 3, Month 6

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=83, 80, 74)Week 2 (n=86, 78, 80)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 67, 71)Month 3 (n=30, 32, 35)Month 6 (n=31, 25, 27)
Placebo4.7643.5242.4272.0281.9691.410
Pregabalin (150 mg)3.7943.2542.4702.1091.8611.738
Pregabalin (300 mg)4.4993.5262.4171.9021.5471.717

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Total Clinically Meaningful Event (CME) Score

CMEs were defined using OR-SDS (assesses subject-reported levels of severity concerning 10 symptoms associated with opioid medication usage: fatigue, drowsiness, inability to concentrate, nausea, dizziness, constipation, itching, difficulty with urination, confusion and retching/vomiting). CME = any symptom rated as severe or very severe, with the exception of confusion. Confusion was defined as a CME if the severity score was at least moderate. Total score = the sum of CMEs across symptoms. Each CME = 1 point. Total CME score ranges from 0 to 9. (NCT00442546)
Timeframe: 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, Discharge, Week 2, Week 4, and Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
24 hours (n=72, 69, 69)48 hours (n=83, 86, 87)72 hours (n=81, 77, 73)96 hours (n=49, 53, 54)120 hours (n=19, 17, 23)Discharge (n=86, 85, 82)Week 2 (n=87, 78, 79)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 66, 71)
Placebo0.7720.7890.6130.2840.2460.3520.1710.0320.051
Pregabalin (150 mg)0.8220.8140.6470.4400.1780.4290.3280.1160.059
Pregabalin (300 mg)0.8170.8340.5700.4890.3500.5020.3110.2360.260

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Timed Up-and-Go (TUG)

TUG: time taken in seconds to rise from a standard arm chair, walk to a line on the floor 3 meters away, turn, return and sit down again. (NCT00442546)
Timeframe: 24 hours, 48 hours, 72 hours, 96 hours, 120 hours, Week 2, Week 4, Week 6/ET

,,
Interventionseconds (Least Squares Mean)
24 hours (n=45, 47, 46)48 hours (n=69, 70, 64)72 hours (n=46, 46, 46)96 hours (n=14, 14, 22)120 hours (n=5, 2, 5)Week 2 (n=78, 71, 72)Week 4 (n=73, 65, 63)Week 6/ET (n=75, 60, 63)
Placebo82.96486.84280.14270.27134.07821.67816.53513.813
Pregabalin (150 mg)76.15380.02766.228110.78052.59122.32218.07212.694
Pregabalin (300 mg)79.97379.54868.37343.021NA21.33218.14515.140

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Analgesics Used During the Hospital Stay (Acetylsalicylic Acid, Ketorolac, and Paracetamol)

Total dose for in-hospital visits was the total dose for the day. (NCT00442546)
Timeframe: 24 hours, 48 hours, 72 hours

,,
Interventionmg (Least Squares Mean)
Acetylsalicylic Acid, 72 hours (n=3, 1, 1)Ketorolac, 24 hours, (n=1, 4, 3)Ketorolac, 48 hours, (n=2, 8, 4)Paracetamol, 24 hours (n=14, 20, 16)Paracetamol, 48 hours (n=22, 25, 17)Paracetamol, 72 hours (n=12, 13, 16)
Placebo1425.82527.18923.4731380.4811263.3371128.355
Pregabalin (150 mg)235.17532.96120.5531311.2461357.030446.050
Pregabalin (300 mg)1442.02553.43221.8631363.0861368.880877.916

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Satisfaction With Medication Efficacy Measured by the PTSS

Measure of subject satisfaction with treatment for acute or chronic pain. Response range: 1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=84, 84, 80)Week 2 (n=22, 20, 18)Week 4 (n=30, 27, 19)Week 6/ET (n=32, 31, 40)
Placebo73.57775.71378.82367.015
Pregabalin (150 mg)74.15678.66978.72366.887
Pregabalin (300 mg)75.70582.72478.88669.367

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Satisfaction With Medication Characteristics Measured by the PTSS

Measure of subject satisfaction with treatment for acute or chronic pain. Response range: 1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=84, 84, 80)Week 2 (n=22, 20, 18)Week 4 (n=30, 27, 19)Week 6/ET (n=32, 31, 40)
Placebo81.55684.58384.32376.908
Pregabalin (150 mg)85.73391.88088.49282.339
Pregabalin (300 mg)85.73287.86990.57184.571

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Satisfaction With Current Pain Medication Measured by the Pain Treatment Satisfaction Scale (PTSS)

Measure of subject satisfaction with treatment for acute or chronic pain. Response range: 1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=84, 84, 80)Week 2 (n=22, 20, 18)Week 4 (n=30, 27, 19)Week 6/ET (n=32, 31, 40)
Placebo77.55080.14881.57271.962
Pregabalin (150 mg)79.89785.27483.60874.618
Pregabalin (300 mg)80.70685.29484.72876.925

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ROM Assessment of the Passive Flexion of the Surgical Knee

The degree of passive (movement of the knee with the aid of physical therapist or designee) knee flexion and extension tolerated by each subject was recorded. Passive ROM in the sitting position was assessed with a goniometer. (NCT00442546)
Timeframe: 24 hours, 48 hours, 72 hours, 96 hours, and 120 hours post surgery, Week 2, Week 4, Week 6/ET

,,
Interventiondegrees (Least Squares Mean)
24 hours (n=81, 76, 73)48 hours (n=78, 80, 70)72 hours (n=53, 50, 53)96 hours (n=17, 17, 24)120 hours (n=5, 3, 6)Week 2 (n=79, 71, 73)Week 4 (n=72, 62, 65)Week 6/ET (n=74, 60, 66)
Placebo64.99176.81380.98480.28779.21893.642101.932108.944
Pregabalin (150 mg)66.72077.71484.15486.47192.16094.767104.548110.318
Pregabalin (300 mg)71.52381.32288.11991.46097.16096.973107.703111.348

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Range of Motion (ROM) Assessment of the Active Flexion of the Surgical Knee

The degree of active (patient moving the knee) knee flexion and extension tolerated by each subject was recorded. Active ROM in the sitting position was assessed with a goniometer. (NCT00442546)
Timeframe: 24 hours, 48 hours, 72 hours, 96 hours, and 120 hours post surgery, Week 2, Week 4, Week 6/ET

,,
Interventiondegrees (Least Squares Mean)
24 hours (n=74, 71, 68)48 hours (n=76, 78, 67)72 hours (n=52, 52, 50)96 hours (n=17, 17, 24)120 hours (n=6, 3, 6)Week 2 (n=73, 67, 69)Week 4 (n=65, 63, 62)Week 6/ET (n=67, 54, 63)
Placebo55.73869.17875.58874.19481.76587.99296.921103.980
Pregabalin (150 mg)54.87769.98176.51678.62480.69489.91798.883105.352
Pregabalin (300 mg)60.74473.37079.53579.50072.69490.332102.237106.252

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Pain Interference With Walking Ability as Measured by the m-BPI-sf

m-BPI-sf questionnaire (7-items) assessed pain interference with functional activities during the past 24 hours. Q5C: Subject response to 'how, during the past 24 hours, pain has interfered with your walking ability'. Scale: 0 = does not interfere to 10 = completely interferes. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET, Month 3, Month 6

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=83, 80, 74)Week 2 (n=86, 78, 80)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 67, 71)Month 3 (n=30, 32, 35)Month 6 (n=31, 25, 27)
Placebo4.9823.4252.4421.7421.9281.126
Pregabalin (150 mg)4.9183.2972.6462.0041.4391.573
Pregabalin (300 mg)4.7283.3442.1081.8861.9071.391

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Pain Interference With Enjoyment of Life as Measured by the m-BPI-sf

m-BPI-sf questionnaire (7-items) assessed pain interference with functional activities during the past 24 hours. Q5G: Subject response to 'how, during the past 24 hours, pain has interfered with your enjoyment of life'. Scale: 0 = does not interfere to 10 = completely interferes. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET, Month 3, Month 6

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=83, 80, 74)Week 2 (n=86, 78, 80)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 67, 71)Month 3 (n=30, 32, 35)Month 6 (n=31, 25, 27)
Placebo3.7442.9531.7681.6961.3680.663
Pregabalin (150 mg)3.4872.9452.1521.5350.9441.657
Pregabalin (300 mg)3.7692.8022.0421.7201.4671.658

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Pain Interference Index Score as Measured by the m-BPI-sf

m-BPI-sf questionnaire (7-items) assessed pain interference with functional activities during the past 24 hours. Pain interference index = average of pain interference question (Q) 5A to 5G. Questions were asked as follows: how, during the past 24 hours, has pain interfered with general activity (Q5A), mood (Q5B), walking ability (Q5C), normal work (outside home and housework) (Q5D), relations with other people (Q5E), sleep (Q5F), enjoyment of life (Q5G). Scale: 0=does not interfere to 10=completely interferes. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, Week 6/ET, Month 3, Month 6

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=83, 80, 74)Week 2 (n=86, 78, 80)Week 4 (n=77, 69, 67)Week 6/ET (n=78, 67, 71)Month 3 (n=30, 32, 35)Month 6 (n=31, 25, 27)
Placebo3.8873.0372.0941.6621.6290.852
Pregabalin (150 mg)3.4272.9692.1621.5971.1391.513
Pregabalin (300 mg)3.4882.8141.9961.6371.3351.300

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Overall Satisfaction Measured by the PTSS

Measure of subject satisfaction with treatment for acute or chronic pain. Response range: 1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, and Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=12, 17, 15)Week 2 (n=6, 4, 4)Week 4 (n=4, 3, 4)Week 6/ET (n=2, 5, 6)
Placebo1.8211.8332.4783.878
Pregabalin (150 mg)1.8452.3331.1491.526
Pregabalin (300 mg)1.6541.6672.4334.174

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Overall Pain Relief Measured by the PTSS

Measure of subject satisfaction with treatment for acute or chronic pain. Response range: 1 (strongly agree) to 5 (strongly disagree). Mean scores were calculated and transformed onto a scale of 0-100, range: 0 = worst possible satisfaction to 100 = best possible satisfaction with pain treatment. (NCT00442546)
Timeframe: Discharge, Week 2, Week 4, and Week 6/ET

,,
Interventionscores on a scale (Least Squares Mean)
Discharge (n=12, 17, 15)Week 2 (n=6, 4, 4)Week 4 (n=4, 3, 4)Week 6/ET (n=2, 5, 6)
Placebo2.0511.8332.5373.900
Pregabalin (150 mg)2.2602.3331.4182.067
Pregabalin (300 mg)1.6961.6672.6124.233

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Opioids Used Post Discharge

The amount of opioid use was calculated as mg of oral morphine equivalent and included opioids administered by any route (PCA pump, parenteral bolus, or oral). Weeks 2, 4, and 6 total daily doses were calculated by adding the cumulative doses during the 2 week period prior to the visit and dividing them by the number of days in the period. This outcome measure does not include pregabalin as it is not an opioid. (NCT00442546)
Timeframe: Week 2, Week 4, Week 6/Early Termination (ET)

,,
Interventionmg of oral morphine equivalent (Least Squares Mean)
Week 2 (n=41, 40, 36)Week 4 (n=33, 33, 30)Week 6/ET (n=24, 28, 22)
Placebo26.11934.27135.036
Pregabalin (150 mg)30.25537.13038.686
Pregabalin (300 mg)27.69237.50735.945

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Number of Subjects With Persistent Pain Based on 11-Point Verbal Rating Scale (VRS)

"The presence of persistent pain was evaluated on the 11-point VRS. The subject answered the question: how much pain did you experience in the last 24 hours in your operated knee? A zero score of VRS was the only number considered as a no. Any positive score (1-10) of VRS was consider as yes." (NCT00442546)
Timeframe: Month 3, Month 6 (phone call)

,,
Interventionparticipants (Number)
Month 3, Yes (n=65, 59, 61)Month 3, No (n=65, 59, 61)Month 6, Yes (n=64, 62, 61)Month 6, No (n=64, 62, 61)
Placebo27341447
Pregabalin (150 mg)22431945
Pregabalin (300 mg)22371547

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Analgesics Used Post Discharge (Acetylsalicylic Acid) for the Pregabalin 150 mg and Placebo Treatment Groups at Week 4

Week 4 total daily dose was calculated by adding the cumulative doses during the 2 week period prior to the visit and dividing them by the number of days in the period. (NCT00442546)
Timeframe: Week 4

Interventionmg (Median)
Pregabalin (150 mg)650.000
Placebo22.100

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Analgesics Used Post Discharge (Acetylsalicylic Acid) for the Pregabalin 150 mg and Placebo Treatment Groups at Week 6/ET

Week 6 total daily dose was calculated by adding the cumulative doses during the 2 week period prior to the visit and dividing them by the number of days in the period. (NCT00442546)
Timeframe: Week 6/ET

Interventionmg (Least Squares Mean)
Pregabalin (150 mg)513.163

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Analgesics Used Post Discharge (Ibuprofen) for the Pregabalin 150 mg and Placebo Treatment Groups

Weeks 2, 4, and 6 total daily doses were calculated by adding the cumulative doses during the 2 week period prior to the visit and dividing them by the number of days in the period. (NCT00442546)
Timeframe: Week 2, Week 4, Week 6/ET

Interventionmg (Least Squares Mean)
Pregabalin (150 mg)862.350
Placebo983.850

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Subject Reported Worst Pain Score in Daily Diaries Using the Worst Pain Item of the Modified Brief Pain Inventory - Short Form (m-BPI-sf)

"The mBPI-SF is a self administered questionnaire developed to assess pain severity and pain interference with functional activities during a 24-hour period prior to evaluation. For the Worst Pain item of the m-BPI-sf scale (11 point Likert scale; range: 0 [no pain] to 10 [pain as bad as you can imagine]), subjects were asked to rate their pain by marking an X in one of the ten boxes that best described their pain at its worst in the last 24 hours post surgery and at least 12 hours after discontinuation of the peripheral nerve block or neuroaxial block." (NCT00442546)
Timeframe: 48 hours after surgery

Interventionscores on a scale (Least Squares Mean)
Pregabalin (150 mg)7.041
Pregabalin (300 mg)6.740
Placebo7.079

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Number of Participants With Significant Change in Supine Heart Rate (HR) at Post Baseline Visits (Visit 1 to 12 Months).

Participants with significant heart rate values with the criteria > 1.5 times ULN or < 0.9 times LLN were identified and recorded. The categorical summary of Post-Baseline supine HR data are presented below. (NCT00448916)
Timeframe: Visit 1 to 12 Months

,,,
InterventionParticipants (Number)
> 1.5 * ULN< 0.9 * LLN
Pregabalin: 1-23 Months05
Pregabalin: 12-16 Years00
Pregabalin: 2-6 Years02
Pregabalin: 7-11 Years01

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Number of Participants With Hematotolgical Abnormalities.

Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Some of the values are: platelets (10*3/mm*3): <0.5 LLN or >1.75 ULN; white blood cell (WBC) count (X10E9/L): <0.6 LLN or >1.5 ULN; lymphocytes-Abs (10*3/mm*3): <0.8 LLN or >1.2 ULN; total neutrophils-Abs (10*3/mm*3): <0.8 LLN or >1.2 ULN; and eosinophils-Abs: >1.2 ULN. (NCT00448916)
Timeframe: 12 Months

,,,
InterventionParticipants (Number)
Platelets: <0.5xLLN (N=16,15,12,11)Platelets: >1.75xULN (N=16,15,12,11)WBC count: <0.6xLLN (N=15,15,12,11)WBC count: >1.5xULN (N=15,15,12,11)Lymphocytes-Abs: <0.8xLLN (N=15,15,12,11)Lymphocytes-Abs: >1.2xULN (N=15,15,12,11)Total neutrophils-Abs: <0.8xLLN (N=15,15,12,11)Total neutrophils-Abs: >1.2xULN (N=15,15,12,11)Eosinophils-Abs: >1.2xULN (N=15,15,12,11)Hemoglobin: <0.8xLLN(N=15,15,12,11)Hematocrit: <0.8xLLN (N=15,15,12,11)Red blood cell count: <0.8xLLN (N=15,15,12,11)Basophils: >1.2xULN (N=15,15,12,11)Monocytes: >1.2xULN (N=15,15,12,11)
Pregabalin: 1-23 Months11100131300000
Pregabalin: 12-16 Years00000230000000
Pregabalin: 2-6 Years10200041100000
Pregabalin: 7-11 Years00000030100000

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Number of Participants With Changes in Electrocardiogram (ECG) Data Post-Baseline Visits (Week 1 to 12 Months).

"Based on the criteria for safety values of potential clinical concern, the PR interval (≥200 msec; ≥25% increase from Baseline; ≥50% increase from Baseline), QRS complex (≥200 msec; ≥25% increase from Baseline), QT (≥500 msec), maximum QTcB interval (450-<480; 480-<500; ≥500 msec) and maximum QTcF interval (450-<480; 480-<500; ≥500 msec) values were calculated.~Baseline was defined as Day 1 of the parent study A0081074 (NCT00437281). Categorical data of the Post-Baseline vists are represented below." (NCT00448916)
Timeframe: Week 1 to 12 Months

,,,
InterventionParticipants (Number)
PR interval: ≥ 200 msecPR interval: ≥50% increase from BaselinePR interval: ≥25% increase from BaselineQRS interval: ≥ 200 msecQRS interval: ≥25% increase from BaselineQT interval: ≥ 500 msecQTcB interval: 450-<480 msecQTcB interval: 480-<500 msecQTcB interval: ≥ 500 msecQTcF interval: 450-<480 msecQTcF interval: 480-<500 msecQTcF interval: ≥ 500 msec
Pregabalin: 1-23 Months001000100000
Pregabalin: 12-16 Years000000200000
Pregabalin: 2-6 Years000000100000
Pregabalin: 7-11 Years001000100000

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Seizure Frequency.

Twenty-eight-day seizure frequencies were to be calculated from the seizure diaries and were to be reviewed. However, due to the nature of the data collection and due to unability to clearly differentiate no seizures versus seizures, accurate computation of this data was not performed. Hence, the seizure data was reported as AE. (NCT00448916)
Timeframe: 28 Days

InterventionParticipants (Number)
Pregabalin: 1-23 MonthsNA
Pregabalin: 2-6 YearsNA
Pregabalin: 7-11 YearsNA
Pregabalin: 12-16 YearsNA

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Change From Baseline in Body Weight at Day 9, Week 1, Month 1, Month 2, Month 4, Month 6, Month 9, Month 12/Early Termination and Follow-up.

Weight was recorded in kilograms and weight change from Baseline was reported. (NCT00448916)
Timeframe: Baseline, Day 9, Week 1, Month 1, Month 2, Month 4, Month 6, Month 9, Month 12/Early Termination and Follow-up

,,,
InterventionKg (Mean)
Day 9 (N=16,14,12,11)Week 1 (N=16,13,11,10)Month 1 (N=14,13,10,10)Month 2 (N=11,12,8,9)Month 4 (N=11,10,7,9)Month 6 (N=11,10,6,7)Month 9 (N=9,10,6,5)Month 12/Early Termination (N=15,12,11,8)
Pregabalin: 1-23 Months0.10.30.41.01.31.82.41.8
Pregabalin: 12-16 Years0.41.22.43.04.15.97.36.6
Pregabalin: 2-6 Years0.10.40.81.21.31.42.32.4
Pregabalin: 7-11 Years-0.11.52.13.85.25.96.36.0

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Number of Participants With Abnormalities in Creatine Kinase.

Based on criteria for safety values of potential clinical concern, the participants with abnormal values in creatine kinase (>2.0 times upper limit of the reference range) (u/L) were noted. (NCT00448916)
Timeframe: 12 Months

InterventionParticipants (Number)
Pregabalin: 1-23 Months0
Pregabalin: 2-6 Years1
Pregabalin: 7-11 Years1
Pregabalin: 12-16 Years4

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Number of Participants With Significant Change in Supine Diastolic Blood Pressure (BP) at Post-Baseline Visits (Visit 1 to 12 Months).

Participants with significant supine diastolic BP values with the criteria ≥ 20% increase from Baseline or ≥ 20% decrease from Baseline or > 1.25 times upper limit of normal (ULN) or < 0.9 times lower limit of normal (LLN) were identified and recorded. The categorical summary of Post-Baseline supine diastolic BP data are presented below. (NCT00448916)
Timeframe: Visit 1 to 12 Months

,,,
InterventionParticipants (Number)
≥ 20% increase from Baseline≥ 20% decrease from Baseline> 1.25 * ULN< 0.9 * LLN
Pregabalin: 1-23 Months12510
Pregabalin: 12-16 Years3300
Pregabalin: 2-6 Years5710
Pregabalin: 7-11 Years8303

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Number of Participants With Abnormalities in Chemistry (Including Liver Function, Renal Function, Lipids, Electrolytes, Glucose, Insulin Like Growth Factor (IGF) and IGF Binding Protein).

Based on criteria for safety values of potential clinical concern, the participants with abnormal values in liver function tests, renal function tests, lipid profile, electrolytes, glucose, Insulin like growth factor (IGF) and IGF binding protein were noted and reported in this section. (NCT00448916)
Timeframe: 12 Months

,,,
InterventionParticipants (Number)
Alanine Aminotransferase: >3.0xULN (N=15,15,12,11)Blood Urea Nitrogen: >1.3xULNAlbumin: <0.8xLLN (N=15,15,12,11)Albumin: >1.2xULN (N=15,15,12,11)Potassium: <0.9xLLN (N=15,15,12,11)Potassium: >1.1xULN (N=15,15,12,11)Magnesium: <0.9xLLN (N=15,15,12,11)Magnesium: >1.1xULN (N=15,15,12,11)Phosphate: <0.8xLLN (N=15,15,12,11)Phosphate: >1.2xULN (N=15,15,12,11)Bicarbonate (venous): <0.9xLLN (N=15,15,12,11)Bicarbonate (venous): >1.1xULN (N=15,15,12,11)Glucose: <0.6xLLN (N=15,15,12,11)Glucose: >1.5xULN (N=15,15,12,11)Insulin-like GrowthFactor:<0.9xLLN(N=12,13,11,10)Insulin-like GrowthFactor:>1.1xULN(N=12,13,11,10)IGF Binding Protein: <0.9xLLN (N=12,13,11,10)IGF Binding Protein: >1.1xULN (N=12,13,11,10)Lipid profile cholesterol/triglycerides(N=1,4,0,1)
Pregabalin: 1-23 Months0202010100901005040
Pregabalin: 12-16 Years0000000100300006000
Pregabalin: 2-6 Years15000002011101008020
Pregabalin: 7-11 Years1100010001700014050

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Number of Participants With Abnormalities in Endocrine Panel (Hormones).

Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Some of the criteria are: Free thyroxine (T4 free) (ng/dL): <0.8 LLN or >1.2 ULN and Thyroid-stimulating hormone (TSH) (mu/L): <0.8 LLN or >1.2 ULN. (NCT00448916)
Timeframe: 12 Months

,,,
InterventionParticipants (Number)
T4 (free): <0.8xLLN (N=13,13,11,10)T4 (free): >1.2xULN (N=13,13,11,10)TSH: <0.8xLLN (N=14,12,11,10)TSH: >1.2xULN (N=14,12,11,10)
Pregabalin: 1-23 Months0010
Pregabalin: 12-16 Years0000
Pregabalin: 2-6 Years1000
Pregabalin: 7-11 Years0000

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Number of Participants With Adverse Events (AE).

An AE is any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event need not necessarily have a causal relationship with the treatment or usage. A serious adverse event (SAE) is any untoward medical occurrence at any dose that: results in death; is life-threatening (immediate risk of death); requires inpatient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; results in congenital anomaly/birth defect. (NCT00448916)
Timeframe: 12 Months

,,,
InterventionParticipants (Number)
Participants with AEsParticipants with serious AEsParticipants with severe AEs
Pregabalin: 1-23 Months1487
Pregabalin: 12-16 Years911
Pregabalin: 2-6 Years1334
Pregabalin: 7-11 Years1100

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Height at Month 12/Early Termination.

Height was recorded in centimeters. (NCT00448916)
Timeframe: Month 12/Early Termination

Interventioncm (Mean)
Pregabalin: 1-23 Months83.3
Pregabalin: 2-6 Years109.9
Pregabalin: 7-11 Years145.6
Pregabalin: 12-16 Years167.3

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Number of Participants With Abnormalities in Urinalysis (Dipstick/Microscopy).

Based on criteria for safety values of potential clinical concern, the participants with abnormal values were noted. Participants with Urine Protein (mg/dL) abnormalities (≥1) were noted based on urinalysis (dipstick). No participants with abnormalities in urinalysis (microscopy) were noted. (NCT00448916)
Timeframe: 12 Months

InterventionParticipants (Number)
Pregabalin: 1-23 Months1
Pregabalin: 2-6 Years1
Pregabalin: 7-11 Years0
Pregabalin: 12-16 Years1

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Derived Body Mass Index Data (BMI) at Month 12/Early Termination.

BMI was calculated from height and weight measured at Month 12 visit using the formula: weight(kg)/height(m)2. (NCT00448916)
Timeframe: Month 12/Early Termination

InterventionKg/m^2 (Mean)
Pregabalin: 1-23 Months16.2
Pregabalin: 2-6 Years18.0
Pregabalin: 7-11 Years20.6
Pregabalin: 12-16 Years24.8

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Number of Participants With Significant Change in Supine Systolic BP at Post Baseline Visits (Visit 1 to 12 Months).

Participants with significant supine systolic BP values with the criteria ≥ 30% increase from Baseline or ≥ 30% decrease from Baseline or > 1.25 times ULN or < 0.9 times LLN were identified and recorded. The categorical summary of Post-Baseline supine systolic BP data are presented below. (NCT00448916)
Timeframe: Visit 1 to 12 Months

,,,
InterventionParticipants (Number)
≥ 30% increase from Baseline≥ 30% decrease from Baseline> 1.25 * ULN< 0.9 * LLN
Pregabalin: 1-23 Months2200
Pregabalin: 12-16 Years1000
Pregabalin: 2-6 Years3100
Pregabalin: 7-11 Years1001

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Brief Pain Inventory-Short Form (m-BPI-sf): Pain Severity Index Scores

"m-BPI-sf: participant rated 11-point Likert rating scale ranging from 0 (no pain) to 10 (worst pain possible). Pain severity index is the mean of item scores 2, 3, and 4 (pain right now, worst pain, and average pain level).~LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata." (NCT00468845)
Timeframe: Baseline, Discharge (day 3 up to day 7 PS), Day 7, 14, 28 PS

,,
InterventionUnits on a scale (Least Squares Mean)
Baseline (n=149, 147, 155)Discharge (n=140, 141, 138)Day 7 (n=122, 121, 125)Day 14 (n=129, 124, 130)Day 28 (n=141, 142, 143)
Placebo02.532.201.610.83
Pregabalin 150mg02.622.051.190.79
Pregabalin 300 mg02.602.161.630.98

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Worst Daily Pain

Post-discharge worst pain as measured in daily participant diaries NRS an 11 point Likert scale that ranged from 0 (no pain) to 10 (pain as bad as you can imagine). LS Means from ANOVA model with terms of treatment, pooled center, salpingo-oophorectomy strata and baseline worst pain score. (NCT00468845)
Timeframe: Discharge (day 3 up to day 7 PS), Day 7, 14, 28 PS

,,
InterventionUnits on a scale (Mean)
Discharge (n=140, 143, 138)Day 7 (n=123, 121, 125)Day 14 (n=129, 125, 130)Day 28 (n=141, 142, 143)
Placebo4.23.52.51.4
Pregabalin 150mg4.33.21.81.2
Pregabalin 300 mg4.43.42.41.7

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Current Pain - Pain With Movement Caused by Sitting

Participant sat upright from supine position, followed by 120 second (sec) rest period, during which participant asked to rate pain with movement. Assessment performed 3 times each day of hospital stay, with 1 daily assessment at 24 (+/- 2) hour interval from end of surgery. Current pain reported on 11 point Likert scale 0 (no pain) to 10 (worst pain imaginable). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Day 1 (day of surgery), up to 7 days PS, Discharge, 2 and 4 weeks PS

,,
InterventionUnits on a scale (Least Squares Mean)
24 Hours PS (n=147, 141, 149)48 Hours PS (n=142, 141, 142)72 Hours PS (n=83, 90, 75)96 Hours PS (n=29, 31, 26)120 Hours PS (n=14, 15, 12)144 Hours PS (n=2, 5, 5)Discharge (n=141, 135, 144)Day 14 (n=126, 120, 128)Day 28 (n=138, 138, 142)
Placebo5.283.673.203.202.362.002.421.300.76
Pregabalin 150mg5.213.572.802.312.891.862.671.080.70
Pregabalin 300 mg5.533.713.043.202.841.262.991.370.91

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Current Pain at Rest

Pain reported by participants at rest (numeric rating scale (NRS) - Current Pain) on an 11 point Likert scale 0 (no pain) - 10 (worst pain). Pain at rest during the hospital stay was assessed just before each Pain with Movement assessment. Assessment performed 3 times each day of hospital stay, with 1 of daily assessments at 24 (+/- 2 ) hour intervals from end of surgery. LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: 8, 16, 24, 32, 40, 48 hours PS

,,
InterventionUnits on a scale (Least Squares Mean)
8 Hours PS (n=123, 125, 126)16 Hours PS (n=94, 88, 107)24 Hours PS (n=151, 147, 154)32 Hours PS (n=127, 127, 136)40 Hours PS (n=93, 97, 100)48 Hours PS (n=142, 143, 140)
Placebo5.474.303.933.552.982.65
Pregabalin 150mg5.134.063.793.372.972.60
Pregabalin 300 mg5.394.553.763.312.712.26

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Incidence of Chronic Post-operative Pain

Chronic post-operative pain as a result of abdominal hysterectomy as reported by participants on PS questionaire of pain within last 24 hours in area affected by surgery. (NCT00468845)
Timeframe: 3 and 6 Months PS

,,
InterventionPercentage of participants (Number)
Months 3 PS (n =136, 127, 138)Months 6 PS (n =138, 127, 141)
Placebo10.14.3
Pregabalin 150mg12.56.5
Pregabalin 300 mg17.36.3

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Integrated Analgesic Score

The integrated analgesic score (a combination of opioid use and either worst pain, or pain at rest, or pain caused by sitting, or pain caused by forced expiration as defined by Silverman et al 1993) was the sum of percent differences from mean rank for pain and opioids and ranged from -200 to 200 where lower values represent improvement. LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: 0-24, 24-48, 48-72 hours PS

,,
InterventionUnits on a scale (Least Squares Mean)
0-24 Hours PS (n=150, 145, 151)24-48 Hours PS (n=141, 142, 139)48-72 Hours PS (n=81, 89, 74)
Placebo3.365.4819.85
Pregabalin 150mg-6.58-5.513.23
Pregabalin 300 mg-11.66-18.84-6.93

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Neuropathic Pain Symptom Inventory (NPSI)

Pain characteristics in participants who reported pain (mBPI-sf, NPSI); NPSI a participant rated questionnaire to evaluate different symptoms of neuropathic pain, burning spontaneous pain, pressing spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dysesthesia at discharge. NPSI Total Score ranged from 0 to 0.5; NPSI subscales pain ranged from 0 (no pain) to 10 (worst pain). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Discharge (day 3 up to day 7 PS)

,,
InterventionUnits on a scale (Least Squares Mean)
Total subscale(n=132, 131, 136)Burning Spontaneous subscale (n=139, 145, 143)Pressing Spontaneous subscale (n=139, 145, 143)Paroxysmal pain subscale (n=138, 140, 143)Evoked Pain subscale (n=134, 135, 142)Paresthesia/dysesthesia (n=136, 140, 141)
Placebo0.0761.751.571.182.270.91
Pregabalin 150mg0.0731.861.741.082.140.46
Pregabalin 300 mg0.0701.801.600.952.270.67

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Non-opioid Rescue Medication - Ibuprofen

The amounts of non-opioid rescue medications, ibuprofen, used by the participants during the study, including anti-emetic medications. (NCT00468845)
Timeframe: 24, 48, 72 hours PS, Discharge (day 3 up to day 7 PS), Week 1, 2, 3, 4 PS

,,
InterventionGrams (g) (Mean)
24 Hours PS (n=150, 147, 155)48 Hours PS (n=150, 147, 154)72 Hours PS (n=150, 147, 149)1st Week PS (n=142, 142, 145)2nd Week PS (n=140, 135, 143)3rd Week PS (n=132, 124, 134)4th Week PS (n=95, 94, 103)Till Discharge (n=147, 143, 147)
Placebo0.010.120.240.971.882.833.840.26
Pregabalin 150mg0.010.080.140.511.221.952.420.18
Pregabalin 300 mg0.030.150.270.871.942.994.300.38

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Non-opioid Rescue Medication - Paracetamol

The amounts of non-opioid rescue medications, paracetamol, used by the participants during the study, including anti-emetic medications. (NCT00468845)
Timeframe: 24, 48, 72 hours PS, Discharge (day 3 up to day 7 PS), Week 1, 2, 3, 4 PS,

,,
InterventionGrams (g) (Mean)
24 Hours PS (n=150, 147, 155)48 Hours PS (n=150, 147, 154)72 Hours PS (n=150, 147,149)1st Week PS (n=142, 142, 145)2nd Week PS (n=139, 135, 143)3rd Week PS (n=131, 124, 134)4th Week PS (n=95, 94, 103)Till Discharge (n=147, 143, 147)
Placebo1.223.555.6812.6319.7024.3525.636.05
Pregabalin 150mg1.163.235.0710.7617.8923.5627.105.45
Pregabalin 300 mg1.213.205.0810.5716.7922.1225.625.78

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Pain Treatment Satisfaction Scale (PTSS): Impact of Current Pain Medication

Impact of current pain medication response scale: 0 (worst possible response) to 100 (best possible response). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Discharge (day 3 up to day 7 PS), Day 28 PS

,,
InterventionUnits on a scale (Least Squares Mean)
Discharge (n=139, 141, 140)Day 28 (n=133, 135, 141)
Placebo72.8269.05
Pregabalin 150mg72.7376.41
Pregabalin 300 mg66.2869.53

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Pain Treatment Satisfaction Scale (PTSS): Satisfaction With Current Pain Medication

Satisfaction with current pain medication ranged from 0 (worst possible response) to100 (best possible response). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Discharge (day 3 up to day 7 PS), Day 28 PS

,,
InterventionUnits on a scale (Least Squares Mean)
Medication Subscale/Discharge (n=138, 137, 139)Medication Subscale/Day 28 (n=133, 134, 137)Characteristic Subscale/Discharge (n=138,136,138)Characteristic Subscale/Day 28 (n=133, 133, 137)Efficacy Subscale/Discharge (n=138, 137, 139)Efficacy Subscale/Day 28 (n=133, 134, 136)
Placebo76.7178.2679.5881.6973.7774.82
Pregabalin 150mg79.4382.5282.1584.8276.6880.20
Pregabalin 300 mg78.4580.1681.8883.1675.0476.92

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Participant Satisfaction With Study Medication - Day 1 PS

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 1 PS

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo16.245.530.57.8
Pregabalin 150mg13.356.026.74.0
Pregabalin 300 mg17.647.329.16.1

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Participant Satisfaction With Study Medication - Day 14 PS

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 14 PS

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo31.333.624.410.7
Pregabalin 150mg40.042.311.56.2
Pregabalin 300 mg42.937.316.73.2

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Participant Satisfaction With Study Medication - Day 2 PS

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 2 PS

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo16.247.029.17.7
Pregabalin 150mg21.949.125.43.5
Pregabalin 300 mg17.654.621.85.9

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Participant Satisfaction With Study Medication - Day 28 PS

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 28 PS

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo34.335.023.87.0
Pregabalin 150mg42.441.79.46.5
Pregabalin 300 mg40.134.516.29.2

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Participant Satisfaction With Study Medication - Day 3 PS

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 3 PS

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo17.650.029.42.9
Pregabalin 150mg15.952.331.80
Pregabalin 300 mg17.547.530.05.0

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Participant Satisfaction With Study Medication - Day 4 PS

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 4 PS

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo14.342.928.614.3
Pregabalin 150mg17.652.929.40
Pregabalin 300 mg5.357.931.65.3

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Participant Satisfaction With Study Medication - Day 5 PS

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 5 PS

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo14.342.928.614.3
Pregabalin 150mg071.428.60
Pregabalin 300 mg7.753.838.50

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Participant Satisfaction With Study Medication - Day 7 PS

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 7 PS

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo25.239.426.09.4
Pregabalin 150mg36.638.215.49.8
Pregabalin 300 mg36.937.717.28.2

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Percentage of Participants With Wound Healing Complications - Day 28 PS

Pre-specified adverse events of wound healing complications based on Center for Disease Control and Prevention, 1999, guidelines for prevention of surgical site infection (SSI) wound healing complications included: superficial incisional SSI, deep incisional SSI, organ/space SSI or non-infections wound healing complication. (NCT00468845)
Timeframe: Day 28 PS

,,
InterventionPercentage of participants (Number)
Superficial Incision SSIDeep Incision SSIOrgan/space SSINon-infectious Wound Healing
Placebo1.200.60
Pregabalin 150mg1.9002.5
Pregabalin 300 mg1.9002.5

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Percentage of Participants With Wound Healing Complications - Day 14 PS

Pre-specified adverse events of wound healing complications based on Center for Disease Control and Prevention, 1999, guidelines for prevention of surgical site infection (SSI) wound healing complications included: superficial incisional SSI, deep incisional SSI, organ/space SSI or non-infections wound healing complication. (NCT00468845)
Timeframe: Day 14 PS

,,
InterventionPercentage of participants (Number)
Superficial Incision SSIDeep Incision SSIOrgan/space SSINon-infectious Wound Healing
Placebo2.4000.6
Pregabalin 150mg5.00.60.64.4
Pregabalin 300 mg2.5002.5

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Area Under the Curve (AUC) Pain - Pain With Movement Caused by Peak Expiratory Flow (PEF) Test

Time-normalized AUC of pain reported by participants with movement caused by PEF test. Pain reported by participant on 11 point Likert scale 0 (no pain) to 10 (worst pain). PEF test performed 3 times, with 120sec rest periods in between. At beginning of each rest period, participant asked to rate pain caused by forced expiration. LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: 48 +/- 4 hours PS

InterventionUnits on a scale (Least Squares Mean)
Pregabalin 150mg4.45
Pregabalin 300 mg4.64
Placebo4.61

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Area Under the Curve (AUC) Pain - Pain With Movement Caused by Sitting

Time-normalized AUC of pain with movement caused by sitting reported by participants. Participant sat upright from supine position, followed by a 120sec rest period, during which the participant asked to rate pain with movement. Assessment performed 3 times each day of hospital stay, with 1 daily assessment at 24 (+/- 2) hour interval from end of surgery. Current pain reported on 11 point Likert scale 0 (no pain) to 10 (worst pain imaginable). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: 48 +/- 4 hours PS

InterventionUnits on a scale (Least Squares Mean)
Pregabalin 150mg4.87
Pregabalin 300 mg5.01
Placebo4.87

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Incision Length Correlated With Worst Pain

Incision length (cm) correlated with worst pain. Worst pain ranged from 0 (no pain) to 10 (worst pain imaginable). LS Means adjusted for treatment, pooled center, salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Day 1

InterventionCentimeter (cm) (Least Squares Mean)
Pregabalin 150mg7.1074
Pregabalin 300 mg7.2324
Placebo7.4437

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Time to Actual Discharge

Mean time from end of surgery to actual hospital discharge. Participant was expected to remain at the hospital for a minimum of 2 days following surgery. (NCT00468845)
Timeframe: Day 1 up to Day 7 PS

InterventionHours (Mean)
Pregabalin 150mg79.339
Pregabalin 300 mg85.221
Placebo78.740

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Time to Meet Hospital Discharge Criteria

Mean time from end of surgery to meet protocol defined hospital discharge criteria: participant no longer received parental opioids, was able to dress and mobilize without assistance, and had normal intake of food and fluids. (NCT00468845)
Timeframe: Day 1 up to Day 7 PS

InterventionHours (Mean)
Pregabalin 150mg57.670
Pregabalin 300 mg60.751
Placebo58.745

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Worst Pain Using the Modified Brief Pain Inventory - Short Form (m-BPI-sf)

"Modified Brief Pain Inventory - Short Form (m-BPI-sf): participant rated 11-point Likert rating scale ranged from 0 (no pain) to 10 (worst pain imaginable).~Least Square (LS) Means adjusted for treatment, pooled center and salpingo-oophorectomy strata." (NCT00468845)
Timeframe: Day 2 (24 hours post surgery [PS])

InterventionUnits on a scale (Least Squares Mean)
Pregabalin 150mg7.1
Pregabalin 300 mg7.2
Placebo7.4

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Anxiety Before and After Surgery

Participant anxiety reported on Visual Anxiety Scale (VAS), 0 (not at all anxious) to 100 (extremely anxious). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata (NCT00468845)
Timeframe: Surgery day before first dose and 1 hour after first dose, Day 1, 2, 3, 4, 5 PS and Discharge (day 3 up to day 7 PS)

,,
InterventionUnits on a scale (Least Squares Mean)
Surgery Day (prior to first dose)(n=149, 144, 151)Surgery Day (1 hour after dosing)(n=138, 139, 146)Day 1 PS (n=150, 149, 154)Day 2 PS (n=112, 120, 118)Day 3 PS (n=44, 40, 35)Day 4 PS (n=17, 20, 15)Day 5 PS (n=7, 13, 7)Discharge (n=143, 144, 148)
Placebo33.330.918.613.813.99.315.18.8
Pregabalin 150mg31.929.515.612.617.29.011.610.2
Pregabalin 300 mg28.429.716.113.411.24.24.58.3

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Average Daily Pain

Post-discharge average pain as measured in daily participant diaries NRS an 11 point Likert scale ranged from 0 (no pain) to 10 (worst pain). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Day 2, 3, 4, 5, 6, 7, PS; week 2, 3, 4 PS

,,
InterventionUnits on a scale (Least Squares Mean)
Day 2 PS (n=29, 21, 25)Day 3 PS (n=97, 94, 98)Day 4 PS (n=126, 114, 125)Day 5 PS (n=133, 117, 133)Day 6 PS (n=133, 125, 138)Day 7 PS (n=132, 130, 135)2nd Week PS (Average) (n=134, 131, 139)3rd Week PS (Average) (n=114, 110, 114)4th Week PS (Average) (n=87, 87, 82)
Placebo3.12.82.82.62.42.21.71.31.2
Pregabalin 150mg3.93.02.72.52.32.11.71.31.2
Pregabalin 300 mg4.33.22.92.62.52.32.01.71.6

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Brief Pain Inventory-Short Form (m-BPI-sf): Pain Interference Index Scores

m-BPI-sf: participant-rated 11 point Likert rating scale ranging from 0 (does not interfere) to 10 (completely interferes) with functional activities (general activity, mood, walking ability, relations with other people, sleep, normal work, and enjoyment of life) in past 24 hours. LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Baseline, Discharge (day 3 up to day 7 PS), Day 7, 14, 28 PS

,,
InterventionUnits on a scale (Least Squares Mean)
Baseline (n=149, 147, 154)Discharge (n=133, 131, 130)Day 7 (n=121, 119, 123)Day 28 (n=140, 141, 142)Day 14 (n=129, 123, 126)
Placebo02.902.521.071.68
Pregabalin 150mg02.571.960.851.20
Pregabalin 300 mg02.622.091.011.41

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Percent Change From Baseline in Peak Expiratory Flow

Change from baseline= PEF at x hours minus PEF at baseline; possible values ranged from 0-900 liters/minute (higher values indicated better lung function). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Baseline, every 8 hours (up to 232 hours) PS, and Discharge (Day 3-7 PS flexible)

,,
InterventionL/min (Least Squares Mean)
Baseline (n=116, 114, 121)8 Hours PS (n=84, 79, 83)16 Hours PS (n=72, 62, 76)24 Hours PS (n=115, 112, 117)32 Hours PS (n=104, 105, 106)40 Hours PS (n=70, 73, 79)48 Hours PS (n=108, 112, 111)56 Hours PS (n=78, 85, 82)64 Hours PS (n=52, 51, 54)72 Hours PS (n=61, 68, 60)80 Hours PS (n=30, 24, 24)88 Hours PS (n=18, 15, 19)96 Hours PS (n=20, 22, 21)104 Hours PS (n=9, 12, 12)112 Hours PS (n=5, 10, 9)120 Hours PS (n=10, 12, 10)128 Hours PS (n=4, 9, 7)
Placebo0-41.29-36.48-29.46-28.92-25.07-21.70-21.12-17.18-20.81-8.17-9.712.36-4.94-11.61-6.98-14.32
Pregabalin 150mg0-39.25-37.37-28.92-24.53-24.18-16.71-17.11-15.04-18.12-17.23-10.08-1.45-12.79-15.61-12.36-6.72
Pregabalin 300 mg0-35.35-36.49-26.53-25.66-25.70-13.62-15.40-14.20-12.97-3.01-2.305.260.698.49-8.14-4.76

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Current Pain - Pain With Movement Caused by Peak Expiratory (PEF) Test

Current pain with movement caused by peak expiratory flow (PEF) test as reported by participant on 11 point Likert scale 0 (no pain) to 10 (worst pain). Assessment performed 3 times each day of hospital stay, with 1 daily assessment at 24 (+/- 2) hour interval from end of surgery. PEF test performed 3 times, with 120sec rest periods in between. At beginning of each rest period, participant asked to rate pain caused by forced expiration. LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Day 1, up to 7 days PS, 2 and 4 weeks PS

,,
InterventionUnits on a scale (Least Squares Mean)
24 hours PS (n=146, 142, 148)48 hours PS (n=141, 143, 140)72 hours PS (n=83, 90, 74)96 hours PS (n=28, 31, 25)120 hours PS (n=13, 14, 11)144 hours PS (n=2, 5, 3)
Placebo4.973.463.043.281.451.67
Pregabalin 150mg4.833.222.621.881.973.67
Pregabalin 300 mg4.923.472.693.052.100.67

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Area Under the Curve (AUC) of Pain at Rest During the First Two Days of Hospital Stay

Time-normalized AUC of pain reported by participants on 11 point Likert scale 0 (no pain) to 10 (worst pain). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: 48 +/- 4 hours PS

InterventionUnits on a scale (Least Squares Mean)
Pregabalin 150mg3.62
Pregabalin 300 mg3.58
Placebo3.76

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Percentage of Participants With Wound Healing Complications - Day 7 PS

Pre-specified adverse events of wound healing complications based on Center for Disease Control and Prevention, 1999, guidelines for prevention of surgical site infection (SSI) wound healing complications included: superficial incisional SSI, deep incisional SSI, organ/space SSI or non-infections wound healing complication. (NCT00468845)
Timeframe: Day 7 PS

,,
InterventionPercentage of participants (Number)
Superficial Incision SSIDeep Incision SSIOrgan/space SSINon-infectious Wound Healing
Placebo0.6000.6
Pregabalin 150mg1.90.603.8
Pregabalin 300 mg2.5001.9

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Percentage of Participants With Wound Healing Complications - Discharge

Pre-specified adverse events of wound healing complications based on Center for Disease Control and Prevention, 1999, guidelines for prevention of surgical site infection (SSI) wound healing complications included: superficial incisional SSI, deep incisional SSI, organ/space SSI or non-infections wound healing complication. (NCT00468845)
Timeframe: Discharge (day 3 up to day 7 PS)

,,
InterventionPercentage of participants (Number)
Superficial Incision SSIDeep Incision SSIOrgan/space SSINon-infectious Wound Healing
Placebo0.6000
Pregabalin 150mg3.1000
Pregabalin 300 mg1.2001.2

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Participant Satisfaction With Study Medication - Surgery Day

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Day 1

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo20.035.030.015.0
Pregabalin 150mg14.342.939.33.6
Pregabalin 300 mg3.162.531.33.1

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Participant Satisfaction With Study Medication - Discharge

Participant satisfaction with study medication using the Global Evaluation of Study Medication questionaire. Participants overall impression (global evaluation) of the study medication was recorded by the participant by answering the following question: How would you rate the study medication you received for pain? Excellent 4; Good 3; Fair 2; Poor 1. (NCT00468845)
Timeframe: Discharge (day 3 up to day 7 PS)

,,
InterventionPercentage of participants (Number)
ExcellentGoodFairPoor
Placebo26.439.925.08.8
Pregabalin 150mg29.648.616.94.9
Pregabalin 300 mg26.251.017.94.8

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Percentage of Participants With Wound Healing Complications - End of Treatment

Pre-specified adverse events of wound healing complications based on Center for Disease Control and Prevention, 1999, guidelines for prevention of surgical site infection (SSI) wound healing complications included: superficial incisional SSI, deep incisional SSI, organ/space SSI or non-infections wound healing complication. (NCT00468845)
Timeframe: Day 1 up to Day 28 PS

,,
InterventionPercentage of participants (Number)
Superficial Incision SSIDeep Incision SSIOrgan/space SSINon-infectious Wound Healing
Placebo0000
Pregabalin 150mg0000
Pregabalin 300 mg1.2000

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Quality of Life Using EuroQol (EQ-5D) Health State Profile

"Participant rated questionnaire assessed current health for 6 domains: mobility/self-care/ usual activities/pain/discomfort/anxiety and depression. Scoring developed by EuroQol Group assigned a utility value for each domain in the profile. Scores ranged from 1 better health (no problems) to 3 worst health (eg, confined to bed). Score transformed and resulted in a total score range -0.594 to 1.000; higher score=better health state. Health profile scores estimated using Dolan computational algorithms 1997 and 2001. LS Means adjusted for treatment/pooled center/salpingo-oophorectomy strata." (NCT00468845)
Timeframe: Discharge (day 3 up to day 7 PS) and day 28 PS

,,
InterventionUnits on a scale (Least Squares Mean)
EQ-5D 1997, Discharge (n=138, 141, 138)EQ-5D 1997, Day 28 (n=140, 143, 142)EQ-5D 2001, Discharge (n=138, 141, 138)EQ-5D 2001, Day 28 (n=140, 143, 142)
Placebo0.580.780.600.78
Pregabalin 150mg0.570.810.590.81
Pregabalin 300 mg0.610.780.620.78

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Sleep Interference

Sleep interference post surgery measured daily in participant diaries; NRS of how pain interfered with sleep during the last 24 hours, ranged from 0 (does not interfere) to 10 (completely interferes). LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Daily post hospital discharge ( Day 2-7 PS), Week 2, 3, 4 PS

,,
InterventionUnits on a scale (Least Squares Mean)
Day 2 PS (n=21, 18, 20)Day 3 PS (n=88, 89, 87)Day 4 PS (n=122, 111, 119)Day 5 PS (n=133, 117, 132)Day 6 PS (n=133, 127, 138)Day 7 PS (n=132, 131, 138)2nd Week PS (Average) (n=134, 131, 139)3rd Week PS (Average) (n=115, 112, 113)4th Week PS (Average) (n=87, 87, 81)
Placebo3.22.62.52.52.12.11.51.00.9
Pregabalin 150mg2.42.62.32.11.71.71.31.01.0
Pregabalin 300 mg3.62.32.52.21.92.01.71.31.4

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Timed Up-and-Go (TUG)

Functional mobility test performed once a day at 24 hour intervals from surgery after the pain with movement assessment. LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Day 1, 2, 3, 4, 5 PS and Discharge (day 3 up to day 7 PS)

,,
InterventionSeconds (Least Squares Mean)
Day 1 PS (n=85, 85, 93)Day 2 PS (n=107, 105, 105)Day 3 PS (n=43, 35, 31)Day 4 PS (n=16, 18, 13)Day 5 PS (n=7, 10, 7)Discharge (n=130, 134, 134)
Placebo38.5429.2531.3840.4332.1826.40
Pregabalin 150mg39.7731.8234.0742.2631.2728.11
Pregabalin 300 mg42.7933.0633.4837.3123.0630.05

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Total Clinically Meaningful Event (CME) Score

Total CME score calculated by summing the number of Clinically Meaningful Events (CMEs) across symptoms. CME for each symptom will be defined using the Opioid-Related Symptom Distress Scale (OR-SDS) a participant rated scale of symptoms within the last 24 hours. Total CME score could range from 0 to 9. LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: Surgery Day, Day 1, 2, 3, 4, 5 PS, Discharge (day 3 up to day 7 PS), Day 7, 14, 28 PS

,,
InterventionUnits on a scale (Least Squares Mean)
Surgery Day (n=26, 25, 32)Day 1 PS (n=148, 147, 154)Day 2 PS (n=108, 116, 114)Day 3 PS (n=38, 36, 32)Day 4 PS (n=14, 16, 11)Day 5 PS (n=5, 9, 6)Discharge (n=133, 132, 133)Day 7 PS (n=119, 117, 120)Day 14 PS (n=119, 116, 124)Day 28 PS (n=129, 135, 136)
Placebo0.91.20.70.30.30.30.30.20.10.2
Pregabalin 150mg0.91.10.60.50.00.40.40.20.10.0
Pregabalin 300 mg0.81.10.60.70.40.10.40.40.20.2

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Total Cumulative Dose of Opioids Following Surgery

Total cumulative dose was calculated as milligram (mg) of morphine equivalent and included opioids administered by any route. LS Means adjusted for treatment, pooled center and salpingo-oophorectomy strata. (NCT00468845)
Timeframe: 24, 48 Hours PS, Discharge (day 3 up to day 7 PS)

,,
Interventionmilligram (mg) (Least Squares Mean)
24 hours PS (n=150, 147, 153)48 hours PS (n=150, 147, 151)Till Discharge (n=147, 143, 144)
Placebo124.44168.31195.32
Pregabalin 150mg113.38148.67164.28
Pregabalin 300 mg111.27144.95167.01

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Percentage of Participants Who Met Protocol-Specified Exit Events

Percentage of participants experiencing any of the following (could have had more than 1): 1) episode of SE; 2) SGTC seizure if none had been experienced within 2 years of study entry; 3) 28-day study seizure rate during DBP >2 times the Max 28-day study seizure rate during BLP; 4) 2-day study seizure rate during the DBP >2 times the Max 2-day study seizure rate during BLP; or 5) unacceptable clinically significant increase in frequency/intensity of seizure activity (NCT00524030)
Timeframe: Week 2 up to Week 18

,
InterventionPercentage of Participants (Number)
Status EpilepticusSGTC Seizure (not experienced in previous 2 years)28-Day Seizure Rate >2 times Max Baseline Rate2-Day Seizure Rate >2 times Max Baseline RateIncreased Frequency/Intensity of Seizure ActivityTotal
Pregabalin 150 mg/Day0013.013.017.439.1
Pregabalin 600 mg/Day1.02.910.87.814.728.4

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Mean Time on Pregabalin Monotherapy

(NCT00524030)
Timeframe: Week 2 to Week 20

InterventionDays (Mean)
Pregabalin 150 mg/Day73.8
Pregabalin 600 mg/Day78.0

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Percentage of Participants Completing 20 Weeks of Double-Blind Treatment

(NCT00524030)
Timeframe: Randomization up to Week 20

InterventionPercentage of Participants (Number)
Pregabalin 150 mg/Day53.6
Pregabalin 600 mg/Day58.3

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Percentage of Participants in the Pregabalin 150 mg/Day Treatment Group Discontinuing the Study Due to at Least 1 Pre-Defined Seizure Exit Criteria

Participants who discontinued due to: episode of SE; SGTC seizure if none within 2 years of study entry; 28-day study seizure rate during DBP >2 times Max 28-day study seizure rate during BLP; 2-day study seizure rate during DBP >2 times Max 2-day study seizure rate during BLP; or unacceptable clinically significant increase in frequency/intensity of seizure activity. Determined as exit rate, defined as (1-KM product limit estimate for survival function) * 100% (NCT00524030)
Timeframe: Week 2 up to Week 18

InterventionPercentage of Participants (Number)
Pregabalin 150 mg/Day37.7

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Percentage of Participants in the Pregabalin 600 mg/Day Treatment Group Discontinuing the Study Due to at Least 1 Pre-Defined Seizure Exit Criteria

Participants who discontinued due to: episode of status epilepticus (SE); secondarily generalized tonic-clonic (SGTC) seizure if none within 2 years of study entry; 28-day study seizure rate during double-blind phase (DBP) greater than (>)2 times maximum (Max) 28-day study seizure rate during baseline phase (BLP); 2-day study seizure rate during DBP >2 times Max 2-day study seizure rate during BLP; or unacceptable clinically significant increase in frequency/intensity of seizure activity. Determined as exit rate:(1-Kaplan-Meier [KM] product limit estimate for survival function) * 100% (NCT00524030)
Timeframe: Week 2 up to Week 18

InterventionPercentage of Participants (Number)
Pregabalin 600 mg/Day31.9

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Pregabalin Exposure-Response Analysis

Percentage of participants predicted to exit the study due to any seizure exit criteria at Day 126. The exit rate at Day 126 was predicted using the final model (log normal distribution with respect to treatment group) and the parameter estimates. (NCT00524030)
Timeframe: Day 126

InterventionPercentage of Participants (Number)
Pregabalin 150 mg/Day37.2
Pregabalin 600 mg/Day26.3

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Percentage of Seizure-Free Participants by Study Phase

Percentage of participants who were seizure-free during the last 28 days on double-blind study medication (monotherapy phase, Days 112-140), during the monotherapy portion of the double-blind treatment phase (Days 56-140), and during all of the double-blind treatment phase (Days 1-140) (NCT00524030)
Timeframe: Day 1 up to Day 140

,
InterventionPercentage of Participants (Number)
Last 28 Days of Monotherapy (Days 112-140)Monotherapy (Days 56-140)Entire Double-Blind Treatment (Days 1-140)
Pregabalin 150 mg/Day17.97.10
Pregabalin 600 mg/Day12.56.71.7

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Percent Change From Baseline in 28 Day Seizure Frequency at Week 16

The seizures were recorded by the participants, by a family member, by a caregiver, or by a legal guardian and documented in a daily seizure diary. Participant's 28-day seizure frequency of all partial seizure was assessed during double blind (TP + MP) phase compared with baseline. (NCT00537238)
Timeframe: Baseline, Week 16

Interventionpercent change (Median)
Pregabalin-53.93
Levetiracetam-57.28

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Proportion of Participants With Response to Treatment

Participants who had at least 50% reduction in 28-day seizure rate from baseline to the end of the maintenance phase were considered as responders. The 28-day seizure rate was calculated as number of partial seizures in the period divided by difference of number of days in the period and number of missing diary day entries in the period, multiplied by 28. (NCT00537238)
Timeframe: Baseline up to Week 16

Interventionproportion of participants (Number)
Pregabalin0.59
Levetiracetam0.59

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Medical Outcomes Study Sleep Scale (MOS-SS) Score

Participant-rated 12-item questionnaire to assess constructs of sleep over past week; 7 subscales:sleep disturbance,snoring,awakened short of breath,sleep adequacy,somnolence (range:0-100);sleep quantity (range:0-24),optimal sleep(yes/no), and 9 item index measures of sleep disturbance provide composite scores:sleep problem summary,overall sleep problem. Except adequacy,optimal sleep and quantity, higher scores=more impairment. Scores transformed (actual raw score[RS] minus lowest possible score divided by possible RS range*100);total score range:0-100;higher score=more intensity of attribute. (NCT00537238)
Timeframe: Baseline, Week 16

,
Interventionunits on a scale (Least Squares Mean)
Baseline: Sleep Disturbance (n=253, 253)Baseline: Snoring (n=253, 254)Baseline: Awaken Short of Breath (n=253, 254)Baseline: Quantity of Sleep (n=252, 252)Baseline: Adequacy of Sleep (n=253, 254)Baseline: Somnolence (n=253, 254)Baseline: Sleep Problem Index (9) (n=253, 253)Week 16: Sleep Disturbance (n=230, 241)Week 16: Snoring (n=230, 240)Week 16: Awaken Short of Breath (n=230, 241)Week 16: Quantity of Sleep (n=230, 241)Week 16: Adequacy of Sleep (n=230, 241)Week 16: Somnolence (n=230, 241)Week 16: Sleep Problem Index (9) (n=230, 241)
Levetiracetam28.1032.4217.267.8264.4033.7729.4923.6123.7514.277.7566.4632.2926.00
Pregabalin27.0630.7215.727.7762.9634.8529.6221.9733.7715.157.8963.4631.5626.64

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Change From Baseline in Brief Psychiatric Rating Scale - Anchored (BPRS-A) Total and Core Score at Week 7, 10, 13, 16 and Follow-up

BPRS-A:18-item clinician rated scale assesses somatic concern,anxiety, emotional withdrawal,conceptual disorganization,hallucinatory behavior(HB), guilt feelings,suspiciousness,disorientation,tension,mannerisms and posturing,grandiosity,depressive mood,hostility,motor retardation,uncooperativeness,unusual thought content,blunted affect,excitement. Items rated on 7-point scale 1 (not reported) to 7 (very severe). Total score=sum of items(range 18-126), core score=sum of conceptual disorganization, suspiciousness, HB, unusual thought content(range 4-28). Higher total/core score=more impairment. (NCT00537238)
Timeframe: Baseline, Week 7, 10, 13, 16 and Follow-up (Day 7 of taper phase)

,
Interventionunits on a scale (Least Squares Mean)
Baseline: Total BPRS-A Score (n=253, 254)Baseline: Core BPRS-A Score (n=253, 254)Change at Week 7: Total BPRS-A Score (n=217, 225)Change at Week 7: Core BPRS-A Score (n=216, 225)Change at Week 10: Total BPRS-A Score (n=217, 219)Change at Week 10: Core BPRS-A Score (n=217, 219)Change at Week 13: Total BPRS-A Score (n=209, 214)Change at Week 13: Core BPRS-A Score (n=209, 214)Change at Week 16: Total BPRS-A Score (n=235, 241)Change at Week 16: Core BPRS-A Score (n=235, 241)Change at Follow-up: Total BPRS-A Score(n=178,189)Change at Follow-up: Core BPRS-A Score(n=178,189)
Levetiracetam26.095.01-1.70-0.22-2.42-0.34-2.68-0.38-1.92-0.26-1.42-0.11
Pregabalin27.265.18-2.16-0.34-2.64-0.40-2.99-0.51-2.70-0.40-2.77-0.37

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Change From Baseline in the Proportion of 28-day Secondarily Generalized Tonic-clonic (SGTC) Seizure Rate to 28-day All Partial Seizure Rate at Week 16

Change was calculated as (proportion of SGTC seizure rate divided by all partial seizure rates during double blind phase) minus (proportion of SGTC seizure rate divided by all partial seizure rates at baseline). Negative values indicated reductions in seizures. (NCT00537238)
Timeframe: Baseline, Week 16

,
Interventionpercentage of all partial seizure/28days (Mean)
Baseline (n=107, 111)Change at Week 16 (n=102, 101)
Levetiracetam38.946.33
Pregabalin39.413.93

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Hospital Anxiety and Depression Scale (HADS) Score

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT00537238)
Timeframe: Baseline, Week 16

,
Interventionunits on a scale (Least Squares Mean)
Baseline: HADS-A (n=253, 253)Baseline: HADS-D (n=253, 253)Week 16: HADS-A (n=228, 241)Week 16: HADS-D (n=228, 241)
Levetiracetam7.346.006.065.42
Pregabalin7.256.226.325.41

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Percentage of Participants Without Seizures

Seizure free for 28 days was defined as participants who have not experienced any seizure (simple partial, complex partial and SGTC) for at least 28 consecutive days from their last seizure until the end of the maintenance phase. Same participant could be seizure free for a specific type of seizure but not necessarily for the other types of seizure. (NCT00537238)
Timeframe: Baseline up to Week 16

,
Interventionpercentage of participants (Number)
All Partial SeizureSimple Partial SeizureComplex Partial SeizureSGTC Seizure
Levetiracetam27.666.259.079.0
Pregabalin19.965.749.380.6

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Percentage of Participants With Optimal Sleep Assessed Using Medical Outcomes Study-Sleep Scale (MOS-SS) Score

MOS-SS: participant-rated 12 item questionnaire to assess constructs of sleep over past week. It included 7 subscales: sleep disturbance, snoring, awakened short of breath, sleep adequacy, somnolence, sleep quantity and optimal sleep. Participants responded whether their sleep was optimal or not by choosing yes or no. Percentage of participants with optimal sleep are reported. (NCT00537238)
Timeframe: Baseline, Week 16

,
Interventionpercentage of participants (Number)
Baseline (n=252, 252)Week 16 (n=230, 241)
Levetiracetam55.650.2
Pregabalin56.058.3

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Percentage of Participants Without Seizures.

Seizure free for 28 days was defined as participants who have not experienced any seizure (simple partial, complex partial and SGTC) for at least 28 consecutive days from their last seizure until the end of the MP. Same participant could be seizure free for a specific type of seizure but not necessarily for the other types of seizure. (NCT00537940)
Timeframe: 6 weeks Baseline, 21 weeks through End of MP for 27 weeks

,
Interventionpercentage of participants (Number)
All Partial Seizure (n=189, 182)Simple Partial (n=74, 66)Complex Partial (n=126, 123)SGTC (n=95, 91)
Gabapentin34.136.440.742.9
Pregabalin30.729.737.346.3

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Percentage of Participants With 75% Reduction From Baseline in 28-day Seizure Rate at Week 21.

Participants who had at least 75% reduction in seizure frequency from Baseline to double-blind treatment (TP + MP) were considered as 75% responders. If percent change from baseline <= -75 then 75% responder rate = 1 (yes) otherwise responder rate = 0 (no). Total partial seizure is defined as the total number of (simple partial seizure + complex partial seizure + SGTC). (NCT00537940)
Timeframe: 6 weeks Baseline, 21 weeks through End of MP for 27 weeks

,
InterventionPercentage of participants (Number)
All Partial Seizure (n=238, 240)Simple Partial (n=87, 88)Complex Partial (n=161, 158)SGTC (n=112, 114)
Gabapentin34.233.036.143.9
Pregabalin33.636.837.338.4

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Medical Outcomes Study Sleep Scale (MOS-SS) Score.

Participant-rated 12-item questionnaire to assess constructs of sleep over past week; 7 subscales: sleep disturbance, snoring, awakened short of breath, sleep adequacy, somnolence (range:0-100); sleep quantity (range:0-24), optimal sleep (yes/no), and 9 item index measures of sleep disturbance provide composite scores: sleep problem summary, overall sleep problem. Except adequacy, optimal sleep and quantity, higher scores=more impairment. Scores transformed (actual raw score [RS] minus lowest possible score divided by possible RS range*100); total score range:0-100; higher score=more intensity of attribute. (NCT00537940)
Timeframe: Baseline, Week 21

,
InterventionUnits on a scale (Least Squares Mean)
Baseline: Sleep Disturbance (n=238, 240)Baseline: Snoring (n=238, 240)Baseline: Awaken Short of Breath (n=238, 240)Baseline: Quantity of Sleep (n=238, 240)Baseline: Adequacy of Sleep (n=238, 240)Baseline: Somnolence (n=238, 240)Baseline: Sleep Problem Index (9) (n=238, 240)Week 21: Sleep Disturbance (n=212, 210)Week 21: Snoring (n=212, 210)Week 21: Awaken Short of Breath (n=212, 210)Week 21: Quantity of Sleep (n=212, 210)Week 21: Adequacy of Sleep (n=212, 210)Week 21: Somnolence (n=212, 210)Week 21: Sleep Problem Index (9) (n=212, 210)
Gabapentin26.4328.0919.617.5963.6729.3128.1525.3126.1218.208.7764.5329.9827.54
Pregabalin29.6829.2823.647.5661.3032.2931.6024.9928.0716.268.7963.8732.0427.88

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Percentage of Participants With 50% Reduction From Baseline in 28-day Seizure Rate at Week 21.

Participants who had at least 50% reduction in seizure frequency from Baseline to double-blind treatment (TP + MP) were considered as 50% responders. If percent change from baseline <= -50 then responder rate = 1 (yes) otherwise responder rate = 0 (no). (NCT00537940)
Timeframe: 6 weeks Baseline, 21 weeks through End of MP for 27 weeks

,
InterventionPercentage of participants (Number)
All Partial Seizure (n=238, 240)Simple Partial (n=87, 88)Complex Partial (n=161, 158)SGTC (n=112, 114)
Gabapentin58.353.455.160.5
Pregabalin56.355.256.550.9

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Percentage of Participants With Optimal Sleep Assessed Using Medical Outcomes Study-Sleep Scale (MOS-SS) Score.

MOS-SS: participant-rated 12 item questionnaire to assess constructs of sleep over past week. It included 7 subscales: sleep disturbance, snoring, awakened short of breath, sleep adequacy, somnolence, sleep quantity and optimal sleep. Participants responded whether their sleep was optimal or not by choosing yes or no. Percentage of participants with optimal sleep are reported. (NCT00537940)
Timeframe: Baseline, Week 21

,
Interventionpercentage of participants (Number)
Baseline (n=238, 240)Week 21 (n=212, 210)
Gabapentin58.858.6
Pregabalin49.251.4

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Percent Change From Baseline in 28-day Seizure Frequency at Week 21.

The seizures were recorded by the participants, by a family member, by a caregiver, or by a legal guardian and documented in a daily seizure diary. Participant's 28-day seizure frequency of all partial seizure was assessed during double blind (TP + MP) phase compared with baseline. Total partial seizure is defined as the total number of (simple partial seizure + complex partial seizure + secondary generalized tonic clonic seizure [SGTC]). (NCT00537940)
Timeframe: 6 weeks Baseline, 21 weeks through End of MP for 27 weeks

Interventionpercent change (Median)
Pregabalin-58.65
Gabapentin-57.43

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Hospital Anxiety and Depression Scale (HADS) Score.

HADS: participant rated questionnaire with 2 subscales. Hospital Anxiety and Depression Scale - anxiety (HADS-A) assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); Hospital Anxiety and Depression Scale - depression (HADS-D) assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT00537940)
Timeframe: Baseline, Week 21

,
InterventionUnits on a scale (Least Squares Mean)
Baseline HADS-A (n=238, 240)HADS- A Change at Week 21/ET (n=212, 210)Baseline HADS-D (n=238, 240)HADS-D Change at Week 21/ET (n=212, 210)
Gabapentin7.60-0.835.65-0.42
Pregabalin7.82-0.925.94-0.59

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Change From Baseline in the 28-day Secondarily Generalized Tonic-clonic (SGTC) Seizure Frequency at Week 21.

Change in SGTC = (Proportion of SGTC/All Partial Seizure rate during at the double-blind phase) - (Proportion of SGTC/All Partial Seizure rate at Baseline). Negative values indicate reduction from baseline. (NCT00537940)
Timeframe: 6 weeks Baseline, 21 weeks through End of MP for 27 weeks

,
Interventionpercentage of all partial seizure/28days (Mean)
Baseline (n=114, 114)Change from Baseline at Double Blind (n=104, 98)
Gabapentin59.60-2.17
Pregabalin56.531.59

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Reduction in Proportion of the 28-day SGTC Seizure Rate Over the Total Partial Seizure Rate at Week 21.

SGTC Responder is defined as a participant who shows reduction from Baseline to double-blind phase in proportion of 28-Day SGTC Seizure Rate to 28-Day All Partial Seizure Rate. (NCT00537940)
Timeframe: 6 weeks Baseline, 21 weeks through End of MP for 27 weeks

Interventionpercentage of responders (Number)
Pregabalin30.8
Gabapentin39.8

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Subject Global Evaluation of Study Medication (GESM)

GESM is a self-administered overall impression (global evaluation) of study medication received for pain; 4 categories: poor, fair, good, and excellent. (NCT00551135)
Timeframe: 24 hours (h) post surgery (PS) and End of Treatment (EOT [Day 7 PS or Early Termination])

,,,
Interventionparticipants (Number)
24 h PS: Poor (n=100, 96, 101, 99)24 h PS: Fair (n=100, 96, 101, 99)24 h PS: Good (n=100, 96, 101, 99)24 h PS: Excellent (n=100, 96, 101, 99)EOT: Poor (n=99, 99, 100, 100)EOT: Fair (n=99, 99, 100, 100)EOT: Good (n=99, 99, 100, 100)EOT: Excellent (n=99, 99, 100, 100)
Placebo1532401218193231
Pregabalin 150 mg828461410193733
Pregabalin 300 mg72542276143050
Pregabalin 50 mg102945169144531

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Participants With Physician Contacts Post-discharge

"Number of participants who answered yes to the Post-Surgery Contact question: From the time you were discharged from the hospital, did you have to contact any type of physician because of pain, difficulty getting up and walking about, or difficulty with passing urine?" (NCT00551135)
Timeframe: 24 and 72 hours (h) post surgery (PS)

,,,
Interventionparticipants (Number)
24 h PS72 h PS
Placebo01
Pregabalin 150 mg23
Pregabalin 300 mg11
Pregabalin 50 mg01

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Chronic Postoperative Pain: Total Score and Subscale Scores Using the Neuropathic Pain Symptom Inventory (NPSI)

NPSI: a 12-item self-administered questionnaire to assess the characteristics of neuropathic pain on average in the last 24 hours. 5 subscale scores include: burning spontaneous (spont.) pain, pressing spont. pain, paroxysmal pain, evoked pain, and paresthesia or dysesthesia (paresth/dysesth) (range: 0 [no pain] to 10 [worst pain imaginable]); total score calculated from the 5 pain subscores (range: 0 to 0.5), higher scores meaning worse pain. (NCT00551135)
Timeframe: 1, 3, and 6 months (mo) post surgery (PS)

,,,
Interventionscores on a scale (Mean)
NPSI total score 1 mo PS (n=20, 24, 19, 26)NPSI total score 3 mo PS (n=3, 5, 5, 3)Burning spont. pain 1 mo PS (n=20, 24, 19, 26)Burning spont. pain 3 mo PS (n=3, 5, 5, 3)Pressing spont. pain 1 mo PS (n=20, 24, 19, 26)Pressing spont. pain 3 mo PS (n=3, 5, 5, 3)Paroxysmal pain 1 mo PS (n=20, 24, 19, 26)Paroxysmal pain 3 mo PS (n=3, 5, 5, 3)Evoked pain 1 mo PS (n=20, 24, 19, 26)Evoked pain 3 mo PS (n=3, 5, 5, 3)Paresth/dysesth 1 mo PS (n=20, 24, 19, 26)Paresth/dysesth 3 mo PS (n=3, 5, 5, 3)
Placebo0.040.040.771.000.690.670.711.331.050.440.460.50
Pregabalin 150 mg0.030.021.040.000.500.500.560.200.761.30.350.20
Pregabalin 300 mg0.050.051.110.401.032.301.050.701.441.730.320.10
Pregabalin 50 mg0.030.020.301.000.430.500.950.330.820.220.100.50

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Participants With Wound Healing Complications

Investigator-assigned mutually exclusive categories of: 1) no surgical wound complication, 2) superficial incisional surgical site infection, 3) deep incisional surgical site infection, 4) organ or space surgical site infection, or 5) non-infectious wound healing complication. (NCT00551135)
Timeframe: Day 7 post surgery (PS) and up to 30 days PS

,,,
Interventionparticipants (Number)
No surgical wound complicationSuperficial incisional surgical site infectionDeep incisional surgical site infectionOrgan/space surgical site infectionNon-infectious wound healing complication
Placebo1011001
Pregabalin 150 mg1020001
Pregabalin 300 mg991001
Pregabalin 50 mg1021002

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Numeric Rating Scale (NRS): Current Pain With Movement - Coughing

NRS: a self-administered questionnaire to rate pain. A single item asks to rate pain with movement caused by coughing (coughing two times while sitting); range: 0 (no pain) to 10 (worst pain) (NCT00551135)
Timeframe: Baseline; 2 hours (h) before surgery (BS); 1, 2, and 3 h post surgery (PS); Days 2, 3, 4, 5, 6, and 7 PS; and End of Treatment (EOT [Day 7 PS or Early Termination])

,,,
Interventionscores on scale (Least Squares Mean)
Baseline2 h BS (n=102, 99, 101, 101)1 h PS (n=95, 91, 93, 90)2 h PS (n=96, 93, 99, 97)3 h PS (n=100, 99, 100, 100)Day 2 PS (n=102, 98, 101, 100)Day 3 PS (n=102, 98, 101, 100)Day 4 PS (n=101, 99, 99, 101)Day 5 PS (n=101, 99, 98, 100)Day 6 PS (n=100, 99, 98, 99)Day 7 PS (n=96, 93, 91, 93)EOT (n=101, 99, 100, 100)
Placebo2.11.84.64.33.95.24.53.93.83.22.72.3
Pregabalin 150 mg1.81.54.84.34.15.14.53.63.12.82.52.0
Pregabalin 300 mg2.21.63.73.83.84.54.33.63.22.92.52.3
Pregabalin 50 mg2.41.44.44.13.84.64.33.62.82.62.41.9

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Numeric Rating Scale (NRS): Current Pain With Movement - Sitting

NRS: a self-administered questionnaire to rate pain. A single item asks to rate pain with movement caused by sitting (sitting in a standardized fashion after being in a fully supine position); range: 0 (no pain) to 10 (worst pain). (NCT00551135)
Timeframe: Baseline; 2 hours (h) before surgery (BS); 1, 2, and 3 h post surgery (PS); Days 2, 3, 4, 5, 6, and 7 PS; and End of Treatment (EOT [Day 7 PS or Early Termination])

,,,
Interventionscores on scale (Least Squares Mean)
Baseline2 h BS (n=102, 99, 101, 101)1 h PS (n=92, 91, 91, 91)2 h PS (n=96, 93, 100, 96)3 h PS (n=100, 98, 101, 101)Day 2 PS (n=102, 98, 101, 100)Day 3 PS (n=102, 98, 100, 101)Day 4 PS (n=101, 99, 99, 101)Day 5 PS (n=101, 99, 98, 100)Day 6 PS (n=100, 99, 98, 99)Day 7 PS (n=96, 93, 91, 93)EOT (n=101, 99, 100, 100)
Placebo1.10.94.13.53.13.72.82.32.01.71.51.2
Pregabalin 150 mg1.20.64.13.73.33.63.02.21.81.61.51.3
Pregabalin 300 mg1.00.83.13.22.93.43.02.41.91.81.81.3
Pregabalin 50 mg1.30.73.63.32.73.52.72.21.71.61.51.0

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Numeric Rating Scale (NRS): Current Pain With Movement - Walking

NRS: a self-administered questionnaire to rate pain. A single item asks to rate pain with movement caused by walking (rising from sitting position and walking approximately 5 meters or 16 feet at a moderate pace); range: 0 (no pain) to 10 (worst pain). (NCT00551135)
Timeframe: Baseline; 2 hours (h) before surgery (BS); 1, 2, and 3 h post surgery (PS); Days 2, 3, 4, 5, 6, and 7 PS; and End of Treatment (EOT [Day 7 PS or Early Termination])

,,,
Interventionscores on scale (Least Squares Mean)
Baseline2 h BS (n=102, 98, 101, 101)1 h PS (n=69, 62, 63, 60)2 h PS (n=84, 76, 84, 80)3 h PS (n=96, 91, 93, 94)Day 2 PS (n=102, 98, 101, 100)Day 3 PS (n=102, 98, 100, 101)Day 4 PS (n=101, 99, 99, 101)Day 5 PS (n=101, 99, 98, 100)Day 6 PS (n=100, 99, 98, 99)Day 7 PS (n=96, 93, 91, 93)EOT (n=101, 99, 100, 100)
Placebo2.01.23.73.63.33.92.92.21.91.61.31.2
Pregabalin 150 mg1.61.13.93.43.63.83.02.21.81.61.41.2
Pregabalin 300 mg1.91.22.93.13.03.32.82.11.81.71.51.3
Pregabalin 50 mg1.91.23.23.33.13.32.72.21.71.51.31.1

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Amount of Non-opioid Rescue Medication (Naproxen and Antiemetic Medications) Used During the Study

Total cumulative dose of naproxen calculated in milligrams (mg) from the end of surgery up to and including Day 7 after surgery. (NCT00551135)
Timeframe: End of Surgery through Day 7 post surgery

Interventionmg (Least Squares Mean)
Pregabalin 50 mg3938.81
Pregabalin 150 mg3930.57
Pregabalin 300 mg3892.96
Placebo3770.07

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Numerical Rating Scale (NRS): Current Pain at Rest

NRS: a self-administered questionnaire to rate pain. A single item asks participant to rate current pain at rest (preceding pain with movement); range: 0 (no pain) to 10 (worst pain). (NCT00551135)
Timeframe: 2 hours (h) before surgery (BS); 1, 2, and 3 h post surgery (PS); Days 2, 3, 4, 5, 6, 7, 8, 9, and 10 PS

,,,
Interventionscores on scale (Least Squares Mean)
2 h BS (n=102, 99, 101, 101)1 h PS (n=102, 97, 100, 100)2 h PS (n=102, 99, 101, 101)3 h PS (n=102, 99, 101, 101)Day 2 PS (n=101, 99, 100, 101)Day 3 PS (n=102, 99, 100, 100)Day 4 PS (n=101, 99, 99, 101)Day 5 PS (n=101, 98, 98, 100)Day 6 PS (n=100, 99, 98, 98)Day 7 PS (n=96, 93, 90, 93)Day 8 PS (n=60, 62, 53, 60)Day 9 PS (n=21, 24, 25, 22)Day 10 PS (n=11, 11, 13, 11)
Placebo0.73.83.02.73.32.31.81.71.51.31.11.50.9
Pregabalin 150 mg0.73.73.22.73.32.72.01.81.41.41.21.01.0
Pregabalin 300 mg0.82.92.72.63.32.21.91.81.41.31.20.60.9
Pregabalin 50 mg0.93.33.12.53.22.52.01.41.31.21.30.40.5

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Modified Brief Pain Inventory-Short Form (mBPI-sf): Worst Pain 24 Hours Post Surgery

m-BPI-sf: a self-administered 11-point Likert rating scale to rate pain in the past 24 hours. A single item pertains to worst pain in the past 24 hours: range of 0 (no pain) to 10 (worst imaginable pain). (NCT00551135)
Timeframe: 24 hours post surgery

Interventionscores on scale (Least Squares Mean)
Pregabalin 50 mg5.2
Pregabalin 150 mg5.4
Pregabalin 300 mg4.7
Placebo5.4

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Total Cumulative Dose of Opioids and Tramadol Used During and After Surgery

Total cumulative dose of opioids and tramadol administered by any route during surgery and postoperatively. Dose of tramadol calculated as milligrams (mg) of oral morphine equivalent. (NCT00551135)
Timeframe: 24, 48, and 72 hours (h) post surgery (PS), and Days 4, 5, 6, and 7 PS

,,,
Interventionmg (Least Squares Mean)
24 h PS (n=102, 99, 101, 101)48 h PS (n=102, 99, 101, 101)72 h PS (n=102, 99, 101, 101)Day 4 PS (n=102, 99, 101, 101)Day 5 PS (n=102, 99, 101, 101)Day 6 PS (n=101, 99, 99, 100)Day 7 PS (n=99, 99, 97, 100)
Placebo16.0319.7922.2023.9725.5726.9028.15
Pregabalin 150 mg9.4414.1016.9918.6520.4621.5722.23
Pregabalin 300 mg6.589.7312.3414.1814.6415.8116.16
Pregabalin 50 mg10.2913.1514.5915.3516.0915.9915.88

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Participants With Chronic Postoperative Pain

"Number of participants who reported surgery-related pain at assessment (by answering 'yes' to a single question: In the last 24 hours, have you had pain in the area affected by your surgery?)" (NCT00551135)
Timeframe: 1, 3, and 6 months (mo) post surgery (PS)

,,,
Interventionparticipants (Number)
1 month PS (n=98, 98, 98, 99)3 month PS (n=98, 97, 97, 97)6 month PS (n=98, 97, 97, 97)
Placebo2630
Pregabalin 150 mg2451
Pregabalin 300 mg1951
Pregabalin 50 mg2031

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Numeric Rating Scale (NRS): Current Pain With Movement - Area Under the Curve (AUC) for Sitting, Walking, and Coughing

NRS: a self-administered questionnaire to rate pain. AUC from 1 h PS through 48 h PS for ratings of pain caused by movements of sitting, walking, and coughing; Range: 0 (no pain) to 10 (worst pain). (NCT00551135)
Timeframe: 1 hour through 48 hours post surgery

,,,
Interventionscores on scale (Least Squares Mean)
Sitting (n=100, 99, 101, 101)Walking (n=97, 91, 95, 96)Coughing (n=101, 99, 100, 101)
Placebo155.57161.74220.34
Pregabalin 150 mg158.90162.70219.69
Pregabalin 300 mg148.25143.40199.13
Pregabalin 50 mg146.22143.82202.93

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Numeric Rating Scale (NRS): Average Pain

NRS: a self-administered questionnaire to rate pain. A single item asks participant to rate pain on average in the last 24 hours; range: 0 (no pain) to 10 (worst pain). (NCT00551135)
Timeframe: 2 hours (h) before surgery (BS); 1, 2, and 3 h post surgery (PS); Days 1, 2, 3, 4, 5, 6, and 7 PS

,,,
Interventionscores on scale (Least Squares Mean)
2 h BS (n=102, 99, 101, 101)1 h PS (n=101, 96, 99, 99)2 h PS (n=101, 97, 101, 99)3 h PS (n=102, 99, 101, 101)Day 1 PS (n=101, 99, 101, 99)Day 2 PS (n=102, 99, 99, 100)Day 3 PS (n=102, 98, 98 101)Day 4 PS (n=101, 99, 97, 100)Day 5 PS (n=101, 99, 98, 100)Day 6 PS (n=98, 96, 91, 96)Day 7 PS (n=63, 66, 56, 62)
Placebo1.43.23.13.23.42.92.51.91.81.61.3
Pregabalin 150 mg1.33.03.23.23.43.12.52.01.81.51.5
Pregabalin 300 mg1.32.52.82.92.92.92.42.11.71.71.4
Pregabalin 50 mg1.32.83.02.83.42.92.51.91.61.41.6

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Daily Sleep Interference Rating Scale (DSIRS) Score

DSIRS: self-administered 11-point Likert scale ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep [unable to sleep due to pain]) during past 24-hour period. Higher score indicates a greater level of sleep disturbance. Performed daily on awakening, prior to taking study medication. (NCT00551135)
Timeframe: Days 2, 3, 4, 5, 6, 7, 8, 9, and 10 post surgery (PS)

,,,
Interventionscores on a scale (Least Squares Mean)
Day 2 PS (n=102, 99, 101, 101)Day 3 PS (n=102, 98, 100, 101)Day 4 PS (n=101, 99, 99, 101)Day 5 PS (n=101, 98, 98, 100)Day 6 PS (n=100, 99, 98, 99)Day 7 PS (n=98, 96, 92, 96)Day 8 PS (n=61, 65, 54, 61)Day 9 PS (n=21, 24, 25, 24)Day 10 PS (n=11, 11, 13, 11)
Placebo3.182.111.481.441.131.000.631.010.72
Pregabalin 150 mg2.612.011.401.220.980.900.901.011.16
Pregabalin 300 mg2.171.501.271.090.810.720.590.400.08
Pregabalin 50 mg2.862.131.521.030.941.041.000.140.15

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Chronic Postoperative Pain: Pain Severity Index Score and Pain Interference Index Score on the Modified Brief Pain Inventory-Short Form (mBPI-sf)

m-BPI-sf: a self-administered 11-point Likert rating scale to rate pain in the past 24 hours. Pain interference index score is mean of 7 individual item scores for interference of pain with functional activities (general activity, mood, walking ability, relations with other people, sleep, normal work, and enjoyment of life); range: 0 (does not interfere) to 10 (completely interferes with functional activities). Pain severity index score is mean of 4 individual item scores for pain severity (pain right now, and worst, least, and average pain); range: 0 (no pain) to 10 (worst imaginable pain). (NCT00551135)
Timeframe: 1, 3, and 6 months (mo) post surgery (PS)

,,,
Interventionscores on a scale (Mean)
Pain Severity 1 mo PS (n=20, 24, 19, 26)Pain Severity 3 mo PS (n=3, 5, 5, 3)Pain Interference 1 mo PS (n=20, 24, 19, 26)Pain Interference 3 mo PS (n=3, 5, 5, 3)
Placebo0.760.420.510.00
Pregabalin 150 mg0.810.750.710.20
Pregabalin 300 mg1.431.551.291.34
Pregabalin 50 mg0.860.580.390.14

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Change From Baseline in Pain Catastrophizing Scale (PCS) Total Score and Subscales

The PCS is a self-administered questionnaire with 13 items, each scored from 0 (not at all) to 4 (all the time) for extent to which participant catastrophizes postoperative pain. Total score is sum of scores for all questions (range: 0 to 52); Subscale scores: Rumination (sum of scores for 4 items; range: 0 to 16); Magnification (sum of scores for 3 items; range: 0 to 12); and Helplessness (sum of scores for 6 items; range: 0 to 24); higher scores mean a greater extent of pain catastrophizing. (NCT00551135)
Timeframe: 3 hours (h) post surgery (PS) and End of Treatment (EOT [Day 7 PS or Early Termination])

,,,
Interventionscores on a scale (Least Squares Mean)
Total score change: 3 h PS (n=99, 98, 98, 99)Total score change: EOT (n=97, 96, 98, 96)Rumination change: 3 h PS (n=99, 98, 98, 99)Rumination change: EOT (n=97, 96, 98, 96)Magnification change: 3 h PS (n=99, 98, 99, 99)Magnification change: EOT (n=97, 96, 99, 96)Helplessness change: 3 h PS (n=99, 98, 99, 99)Helplessness change: EOT (n=97, 96, 99, 96)
Placebo-1.5-5.7-0.4-1.9-0.7-1.4-0.5-2.5
Pregabalin 150 mg-2.8-5.8-0.7-1.8-0.9-1.7-1.3-2.3
Pregabalin 300 mg-3.6-6.3-1.1-2.2-1.1-1.6-1.4-2.5
Pregabalin 50 mg-3.5-6.2-1.0-2.3-0.9-1.5-1.5-2.4

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Baseline and Change From Baseline in Short Form Acute Health Survey 12-Item Version (SF-12v2) Physical Component Summary Score (PCSS) and Mental Component Summary Score (MCSS)

PCSS and MCSS are component summary scores from the self-administered SF-12v2 acute health quality of life, norm-based survey. PCSS range: 4.95 to 76.13; MCSS range: -0.79 to 79.69; lowest scores mean very much below and highest scores mean very much above the general population average. (NCT00551135)
Timeframe: Baseline and End of Treatment (EOT [Day 7 post surgery or Early Termination])

,,,
Interventionscores on a scale (Least Squares Mean)
PCSS at baseline (n=101, 99, 100, 100)PCSS change at EOT (n=99, 99, 99, 98)MCSS at baseline (n=101, 99, 100, 100)MCSS change at EOT (n=99, 99, 99, 98)
Placebo44.89-8.2156.181.50
Pregabalin 150 mg48.14-7.0654.582.68
Pregabalin 300 mg46.44-6.9254.813.27
Pregabalin 50 mg46.43-6.8654.482.65

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Baseline and Change From Baseline in EuroQol (EQ-5D) Health State Profile Score

EQ-5D is a self-administered questionnaire to assess health-related quality of life in 5 domains (mobility, self care, usual activities, pain or discomfort, and anxiety or depression). Scores from the 5 domains are used to calculate a single index value: the Health State Profile Score; range: 0.0 (death) to 1.0 (perfect health), higher scores indicating better health state. (NCT00551135)
Timeframe: Baseline and End of Treatment (EOT [Day 7 post surgery or Early Termination])

,,,
Interventionscores on scales (Least Squares Mean)
Baseline (n=101, 99, 100, 100)Change at EOT (n=97, 98, 99, 98)
Placebo0.66-0.04
Pregabalin 150 mg0.68-0.01
Pregabalin 300 mg0.65-0.01
Pregabalin 50 mg0.66-0.01

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Baseline and Change From Baseline in Anxiety Visual Analog Scale (VAS) Score

Anxiety VAS is a single-item self-administered continuous measure of anxiety using a 100-millimeter (mm) line on which the subject is asked to place a mark indicating the intensity of current anxiety. The score is the distance in mm from the left-most point on the line to the subject's mark; range: 0 (Not at all anxious) at the left-most point to 100 (Extremely anxious) at the right-most point. Performed prior to blood draws. (NCT00551135)
Timeframe: Baseline; 2 hours (h) before surgery (BS); 1, 2, and 3 h PS; Days 2, 3, 4, 5, 6, 7, 8, and 9 PS

,,,
Interventionscores on a scale (Least Squares Mean)
Baseline (n=101, 98, 100, 100)2 h BS (n=101, 98, 100, 99)1 h PS (n=100, 96, 99, 99)2 h PS (n=101, 98, 100, 100)3 h PS (n=101, 98, 100, 100)Day 2 PS (n=101, 98, 100, 100)Day 3 PS (n=101, 97, 99, 100)Day 4 PS (n=101, 98, 98, 101)Day 5 PS (n=101, 98, 97, 99)Day 6 PS (n=100, 98, 97, 97)Day 7 PS (n=97, 93, 89, 95)Day 8 PS (n=61, 64, 53, 58)Day 9 PS (n=21, 24, 23, 22)
Placebo16.44.2-3.2-6.1-6.4-5.8-9.3-11.4-12.7-12.8-12.4-14.7-12.8
Pregabalin 150 mg19.43.2-3.5-7.6-8.3-10.4-12.7-15.3-15.0-15.0-15.2-15.4-16.4
Pregabalin 300 mg18.41.4-5.2-7.1-9.0-7.5-11.3-12.1-12.4-13.6-13.3-15.5-14.7
Pregabalin 50 mg20.20.2-6.4-8.4-8.7-7.9-9.1-11.1-12.3-12.5-13.0-13.6-16.6

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Numeric Rating Scale (NRS): Current Pain at Rest - Area Under the Curve (AUC)

NRS: a self-administered questionnaire to rate pain. AUC for a single item asking participant to rate current pain at rest (preceding pain with movement); range: 0 (no pain) to 10 (worst pain). (NCT00551135)
Timeframe: 1 through 48 hours post surgery (PS)

Interventionscore on scale (Least Squares Mean)
Pregabalin 50 mg133.8
Pregabalin 150 mg141.3
Pregabalin 300 mg132.3
Placebo135.1

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Summary of Adverse Events

Number of participants with all causality adverse events, serious adverse events, severe adverse events, adverse events resulted in discontinuation, dose reduced or temporary discontinuation. Participants are counted only once per treatment in each row. (NCT00553280)
Timeframe: 53 weeks

Interventionparticipants (Number)
Participants with adverse eventsParticipants with serious adverse eventsParticipants with severe adverse eventsParticipants discontinued due to adverse eventsDose reduced or temporary discontinuation
Pregabalin1142171743

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Change From Baseline in Short-Form McGill Pain Questionnaire: Affective Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Affective score ranges from 0-12. Higher scores indicate more severe pain. (NCT00553280)
Timeframe: From baseline to 52 weeks or study discontinuation (Study Endpoint)

Interventionscore on scale (Mean)
Pregabalin-1.2

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Change From Baseline in Short-Form McGill Pain Questionnaire: Present Pain Intensity Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Present pain intensity score ranges from 0-5. Higher scores indicate more severe pain. (NCT00553280)
Timeframe: From baseline to 52 weeks or study discontinuation (Study Endpoint)

Interventionscore on scale (Mean)
Pregabalin-0.7

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Change From Baseline in Short-Form McGill Pain Questionnaire: Sensory Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Sensory score ranges from 0-33. Higher scores indicate more severe pain. (NCT00553280)
Timeframe: From baseline to 52 weeks or study discontinuation (Study Endpoint)

Interventionscore on scale (Mean)
Pregabalin-3.5

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Change From Baseline in Short-Form McGill Pain Questionnaire: Visual Analogue Scale Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Visual Analogue Scale Score ranges from 0-100 mm. Higher scores indicate more severe pain. (NCT00553280)
Timeframe: From baseline to 52 weeks or study discontinuation (Study Endpoint)

Interventionmm (Mean)
Pregabalin-25.4

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Change From Baseline in Short-Form McGill Pain Questionnaire: Total Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Total score ranges from 0-45. Higher scores indicate more severe pain. (NCT00553280)
Timeframe: From baseline to 52 weeks or study discontinuation (Study Endpoint)

Interventionscore on scale (Mean)
Pregabalin-4.7

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Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Sleep Disturbance

The mean change from baseline in Medical Outcomes Study - Sleep Scale Scores at study endpoint. Score for sleep disturbance ranges from 0-100. Higher scores indicate more severe pain. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-9.03
Pregabalin 300 mg/Day-15.40
Pregabalin 600 mg/Day-12.81

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Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Sleep Shortness of Breath or Headache

The mean change from baseline in Medical Outcomes Study - Sleep Scale Scores at study endpoint. Score for sleep shortness of breath or headache ranges from 0-100. Higher scores indicate more of the attribute. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-1.63
Pregabalin 300 mg/Day-3.02
Pregabalin 600 mg/Day-4.47

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Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Sleep Adequacy

The mean change from baseline in Medical Outcomes Study - Sleep Scale Scores at study endpoint. Score for sleep adequacy ranges from 0-100. Higher scores indicate more of the attribute. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo12.08
Pregabalin 300 mg/Day17.69
Pregabalin 600 mg/Day21.73

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Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Somnolence

The mean change from baseline in Medical Outcomes Study - Sleep Scale Scores at study endpoint. Score for somnolence ranges from 0-100. Higher scores indicate more of the attribute. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-2.96
Pregabalin 300 mg/Day0.83
Pregabalin 600 mg/Day4.83

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Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Bodily Pain

The mean change from baseline in Short-Form 36-Item Health Survey Scores at study endpoint. Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo10.34
Pregabalin 300 mg/Day11.84
Pregabalin 600 mg/Day12.89

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Change From Baseline in Short Form 36-Item (SF-36) Health Survey: General Health Perception

The mean change from baseline in Short-Form 36-Item Health Survey Scores at study endpoint. Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo2.31
Pregabalin 300 mg/Day3.29
Pregabalin 600 mg/Day4.40

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Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Mental Health

The mean change from baseline in Short-Form 36-Item Health Survey Scores at study endpoint. Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo3.84
Pregabalin 300 mg/Day5.33
Pregabalin 600 mg/Day7.81

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Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Physical Functioning

The mean change from baseline in Short-Form 36-Item Health Survey Scores at study endpoint. Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo2.70
Pregabalin 300 mg/Day2.43
Pregabalin 600 mg/Day3.86

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Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Role Limitations-Emotional

The mean change from baseline in Short-Form 36-Item Health Survey Scores at study endpoint. Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo4.13
Pregabalin 300 mg/Day5.05
Pregabalin 600 mg/Day6.35

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Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Role Limitations-Physical

The mean change from baseline in Short-Form 36-Item Health Survey Scores at study endpoint. Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo4.38
Pregabalin 300 mg/Day2.28
Pregabalin 600 mg/Day3.97

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Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Social Functioning

The mean change from baseline in Short-Form 36-Item Health Survey Scores at study endpoint. Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo3.00
Pregabalin 300 mg/Day8.06
Pregabalin 600 mg/Day11.16

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Change From Baseline in Short Form 36-Item (SF-36) Health Survey: Vitality

The mean change from baseline in Short-Form 36-Item Health Survey Scores at study endpoint. Short-Form 36-Item Health Survey is scored from 0-100 with higher scores reflecting better patient status. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo5.28
Pregabalin 300 mg/Day4.20
Pregabalin 600 mg/Day12.87

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Change From Baseline in Short-Form McGill Pain Questionnaire: Affective Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Affective score ranges from 0-12. Higher scores indicate more severe pain. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-0.83
Pregabalin 300 mg/Day-1.43
Pregabalin 600 mg/Day-1.39

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Change From Baseline in Short-Form McGill Pain Questionnaire: Present Pain Intensity Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Present pain intensity score ranges from 0-5. Higher scores indicate more severe pain. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-0.59
Pregabalin 300 mg/Day-0.80
Pregabalin 600 mg/Day-0.96

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Change From Baseline in Short-Form McGill Pain Questionnaire: Sensory Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Sensory score ranges from 0-33. Higher scores indicate more severe pain. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-2.82
Pregabalin 300 mg/Day-4.60
Pregabalin 600 mg/Day-4.95

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Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Snoring

The mean change from baseline in Medical Outcomes Study - Sleep Scale Scores at study endpoint. Score for snoring ranges from 0-100. Higher scores indicate more of the attribute. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-6.00
Pregabalin 300 mg/Day-5.96
Pregabalin 600 mg/Day-1.56

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Change From Baseline at Week 1 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 1.~Change from baseline: Score at Week 1 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 1

Interventionscore on scale (Least Squares Mean)
Placebo-0.39
Pregabalin 300 mg/Day-0.82
Pregabalin 600 mg/Day-1.14

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Change From Baseline at Week 11 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 11.~Change from baseline: Score at Week 11 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 11

Interventionscore on scale (Least Squares Mean)
Placebo-1.32
Pregabalin 300 mg/Day-1.95
Pregabalin 600 mg/Day-2.09

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Change From Baseline at Week 12 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 12.~Change from baseline: Score at Week 12 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 12

Interventionscore on scale (Least Squares Mean)
Placebo-1.36
Pregabalin 300 mg/Day-2.01
Pregabalin 600 mg/Day-2.13

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Change From Baseline at Week 13 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 13.~Change from baseline: Score at Week 13 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 13

Interventionscore on scale (Least Squares Mean)
Placebo-1.38
Pregabalin 300 mg/Day-2.04
Pregabalin 600 mg/Day-2.12

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Change From Baseline at Week 10 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 10.~Change from baseline: Score at Week 10 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 10

Interventionscore on scale (Least Squares Mean)
Placebo-1.23
Pregabalin 300 mg/Day-1.93
Pregabalin 600 mg/Day-2.10

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Change From Baseline at Week 2 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 2.~Change from baseline: Score at Week 2 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 2

Interventionscore on scale (Least Squares Mean)
Placebo-0.57
Pregabalin 300 mg/Day-1.17
Pregabalin 600 mg/Day-1.80

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Change From Baseline at Week 3 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 3.~Change from baseline: Score at Week 3 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 3

Interventionscore on scale (Least Squares Mean)
Placebo-0.80
Pregabalin 300 mg/Day-1.40
Pregabalin 600 mg/Day-1.93

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Change From Baseline at Week 4 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 4.~Change from baseline: Score at Week 4 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 4

Interventionscore on scale (Least Squares Mean)
Placebo-0.89
Pregabalin 300 mg/Day-1.53
Pregabalin 600 mg/Day-2.00

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Change From Baseline at Week 5 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 5.~Change from baseline: Score at Week 5 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 5

Interventionscore on scale (Least Squares Mean)
Placebo-0.91
Pregabalin 300 mg/Day-1.57
Pregabalin 600 mg/Day-2.07

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Change From Baseline at Week 6 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 6.~Change from baseline: Score at Week 6 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 6

Interventionscore on scale (Least Squares Mean)
Placebo-0.94
Pregabalin 300 mg/Day-1.72
Pregabalin 600 mg/Day-2.06

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Change From Baseline to Study Endpoint in Mean Weekly Pain Scores

Change from baseline: Score at study endpoint minus score at baseline. Study endpoint is defined as the mean of the last seven entries of the daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) while on study medication up to and including day after last dose. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-1.20
Pregabalin 300 mg/Day-1.82
Pregabalin 600 mg/Day-1.94

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Change From Baseline at Week 8 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 8.~Change from baseline: Score at Week 8 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 8

Interventionscore on scale (Least Squares Mean)
Placebo-1.18
Pregabalin 300 mg/Day-1.85
Pregabalin 600 mg/Day-2.12

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Change From Baseline at Week 7 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 7.~Change from baseline: Score at Week 7 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 7

Interventionscore on scale (Least Squares Mean)
Placebo-1.04
Pregabalin 300 mg/Day-1.76
Pregabalin 600 mg/Day-2.13

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Change From Baseline in Short-Form McGill Pain Questionnaire: Total Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Total score ranges from 0-45. Higher scores indicate more severe pain. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-3.68
Pregabalin 300 mg/Day-6.03
Pregabalin 600 mg/Day-6.36

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Change From Baseline in Short-Form McGill Pain Questionnaire: Visual Analogue Scale Scores

The mean change from baseline in Short-Form McGill Pain Questionnaire Scores at study endpoint. Visual Analogue Scale Score ranges from 0-100 mm. Higher scores indicate more severe pain. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionmm (Least Squares Mean)
Placebo-16.92
Pregabalin 300 mg/Day-24.19
Pregabalin 600 mg/Day-24.41

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Change From Baseline to Study Endpoint in Mean Weekly Pain Scores by Groups of Subjects With Expected Similar Plasma Concentrations

Change from baseline: Score at study endpoint minus score at baseline. Study endpoint is defined as the mean of the last seven entries of the daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) while on study medication up to and including day after last dose. Subjects are classified by exposure to pregabalin, which is estimated by creatinine clearance (CLcr). (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-1.27
Expected Exposure Pregabalin 300 mg/Day-1.93
Expected Exposure Pregabalin 600 mg/Day-1.90

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Clinical Global Impression of Change

Clinical Global Impression of Change is a clinician-rated instrument that measures change in patient's overall status on a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). (NCT00553475)
Timeframe: Week 13 or up to discontinuation

Interventionscore on scale (Mean)
Placebo3.3
Pregabalin 300 mg/Day2.9
Pregabalin 600 mg/Day2.7

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Number of Responders

A responder is defined as a subject with a 50% reduction in weekly mean pain score from baseline to study endpoint. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionparticipants (Number)
Placebo29
Pregabalin 300 mg/Day39
Pregabalin 600 mg/Day16

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Patient Global Impression of Change

The Patient Global Impression of Change is a patient-rated instrument that measures change in patient's overall status on a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). (NCT00553475)
Timeframe: Week 13 or up to discontinuation

Interventionscore on scale (Mean)
Placebo3.4
Pregabalin 300 mg/Day3.2
Pregabalin 600 mg/Day2.8

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Change From Baseline at Week 9 in Mean Weekly Pain Scores

"The mean change from baseline in mean weekly pain score from daily pain diary using the 11-point numerical rating scale 0(no pain) to 10(worst possible pain) at Week 9.~Change from baseline: Score at Week 9 minus score at baseline" (NCT00553475)
Timeframe: From baseline to Week 9

Interventionscore on scale (Least Squares Mean)
Placebo-1.20
Pregabalin 300 mg/Day-1.93
Pregabalin 600 mg/Day-2.06

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Change From Baseline in Mean Sleep Interference Scores

The mean change from baseline in the weekly mean sleep interference score at study endpoint. Score range is from 0-10. Higher scores indicate more severe interference with sleep. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-0.74
Pregabalin 300 mg/Day-1.59
Pregabalin 600 mg/Day-1.36

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Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Overall Sleep Problems Index

The mean change from baseline in Medical Outcomes Study - Sleep Scale Scores at study endpoint. Score for overall sleep problems index ranges from 0-100. Higher scores indicate more of the attribute. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo-7.91
Pregabalin 300 mg/Day-11.45
Pregabalin 600 mg/Day-9.73

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Change From Baseline in Medical Outcomes Study (MOS) - Sleep Scale: Quantity of Sleep

The mean change from baseline in Medical Outcomes Study - Sleep Scale Scores at study endpoint. Score for quantity of sleep ranges from 0-24. Higher scores indicate more of the attribute named in the subscale. (NCT00553475)
Timeframe: From baseline to Week 13 or up to study discontinuation (Study Endpoint)

Interventionscore on scale (Least Squares Mean)
Placebo0.37
Pregabalin 300 mg/Day0.69
Pregabalin 600 mg/Day0.54

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Epidural Medication Consumption Rate

Epidural medication consumption was recorded for each 4-h interval from the completion of surgery to the time that the epidural was discontinued (same as the time to achieve hospital discharge criteria). Because the discontinuation time varied from patient to patient (as they achieved physical therapy criteria), the average hourly consumption (total analgesic used divided by the total infusion time) was used as the measure of epidural drug use. (NCT00558753)
Timeframe: 36 h

InterventionmL/h (Mean)
1 Placebo6.40
2 Pregabalin5.77

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Knee Range of Motion (Active Flexion)

(NCT00558753)
Timeframe: 1-30 days

,
InterventionDegrees (Least Squares Mean)
Day 1Day 2Day 3Day 30
1 Placebo75.676.780.4103.0
2 Pregabalin77.881.084.2107.2

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Neuropathic Pain (S-LANSS > 12)

Patients will be evaluated in blinded fashion for lower extremity Complex Regional Pain Syndrome(CRPS) at pre-op, 1, 3, and 6 months postsurgery based initially on telephone interviews. An S-LANSS score of 12 or more was an indication of chronic neuropathic pain. Patients with an Self-report version of the Leeds Assessment of Neuropathic Symptoms and Signs(S-LANSS) score of 12 or more at 6 mo came to the physician's office for a standardized physical examination, which included the S-LANSS examination items (allodynia and hyperalgesia) directly assessed by the physician, plus a pinprick evaluation. (NCT00558753)
Timeframe: 3 and 6 months post-surgery

,
Interventionparticipants (Number)
Neuropathic pain at 3 Month Follow upNeuropathic pain at 6 Month Follow up
1 Placebo106
2 Pregabalin00

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Daily Evening Patient Reported Pain Intensity Scores

Change from mean of last 3 days of maintenance period to last 3 days of double-blind period; Pain Intensity was rated on a 0-10 numeric rating scale (NRS: 0=no pain, 10=worst pain you can imagine) (NCT00570310)
Timeframe: Baseline and 6 Weeks

InterventionUnits on a Scale (Least Squares Mean)
Pregabalin0.14
Placebo1.57

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'Time to Efficacy Failure' During the Randomized Withdrawal Portion of the Study

Time to treatment failure (3 day mean of average 24 hour pain intensity ≥ 4 with at least a 30% increase relative to the last 3 days prior to randomization) (NCT00570310)
Timeframe: 6 Weeks

InterventionDays (Least Squares Mean)
Pregabalin15.54
Placebo7.87

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Assessing the Change in Heart Rate by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.

The LifeShirt System, developed by VivoMetrics, is a lightweight vest with embedded sensors that continuously collect information on a range of cardiopulmonary parameters. It was used to collect and store the respiratory rate, posture, activity level, QRS complexes, and R-R intervals via a 3-axis accelerometer and a 3-lead, single channel electrocardiogram. (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

InterventionBeats Per Minute (Mean)
Placebo-2.94
Pregabalin-3.49

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Assessing the Change of Parameters of Autonomic Nerve Function Such as Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.

Heart rate variability parameters yielded by time domain analysis included the number of N-N intervals that differ by more than 50 milliseconds from adjacent intervals divided by the total number of all N-N intervals (pNN50). (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

InterventionIntervals more than 50 ms (Mean)
Placebo15.97
Pregabalin-2.25

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To Assess the Change of Depressive Symptoms Upon Treatment of Pregabalin in Comparison to Placebo.

The Beck Depression Inventory Scale measures symptoms of depression, score range, 0-63 (higher score=greater severity of depressive symptoms) (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

Interventionunits on a scale (Mean)
Placebo1.21
Pregabalin-1.20

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Assessing the Change in Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.

Heart Rate Variability parameters generated by the frequency domain analysis included: Low Frequency / High Frequency (LF/HF), as well as normalized LF (normalized LF=LF/[total power-VLF]) and normalized HF (normalized HF=HF/[total power-VLF]). (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

,
InterventionRatio (Mean)
Low frequency/High frequencyNormalized low frequencyNormalized high frequency
Placebo0.370.0066-0.038
Pregabalin-1.30-0.0490.039

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Assessing the Change in Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.

Heart rate variability parameters generated by the frequency domain analysis included: total power (area under the curve) over all frequencies, very low frequency (VLF, 0-0.04 Hz),low frequency (LF, 0.04-0.15 Hz), and high frequency (HF,0.15-0.4 Hz). (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

,
InterventionHertz (Hz) (Mean)
Total PowerLow FrequencyHigh Frequency
Placebo45.2932.41-12.19
Pregabalin-140.99-67.06-41.37

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Assessing the Change in Resting Blood Pressure Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.

(NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

,
Interventionmm Hg (Mean)
Systolic Blood Pressure (mm Hg)Diastolic Blood Pressure (mm Hg)
Placebo-7.63-4.41
Pregabalin-8.98-4.93

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Assessing the Change of Parameters of Autonomic Nerve Function Such as Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.

Heart rate variability parameters yielded by time domain analysis included the mean of all R-R intervals (ANN), standard deviation of all R-R intervals (SDNN), root mean square of successive differences (RMSSD), and standard deviation of the averages of R-R intervals for all 5-minute segments within the block (SDANN). (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

,
Interventionmilliseconds (Mean)
ANNSDNNSDANNRMSSD
Placebo21.473.420.680.58
Pregabalin65.44-0.551.38-0.51

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To Assess the Change in Disability Scale Upon Treatment of Pregabalin in Comparison to Placebo.

The Sheehan Disability Scale was used to evaluate functional impairment in work/school, social and family life, score range, 0-10; the 3 items can be summed into a single dimensional measure of global functional impairment that ranges from 0(unimpaired) to 30 (highly impaired). (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

,
Interventionunits on a scale (Mean)
Disability scale - Global functioning scoreDisability scale - Work/school disabilityDisability scale - Social disabilityDisability scale - Family disability
Placebo-1.67-0.42-0.58-0.67
Pregabalin-7.73-2.93-2.13-2.67

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To Assess the Change of Anxiety Symptoms Upon Treatment of Pregabalin in Comparison to Placebo.

Anxiety symptoms were measured using the Spielberger State-Trait Anxiety Inventory Scale (STAI) for symptoms of anxiety. State anxiety: score range, 20-80 (higher score=greater levels of state anxiety). Trait anxiety: score range, 20-80 (higher score=greater levels of trait anxiety). (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

,
Interventionunits on a scale (Mean)
State AnxietyTrait Anxiety
Placebo0.571
Pregabalin1.2-3.67

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To Assess the Change of Pain Symptoms Upon Treatment of Pregabalin in Comparison to Placebo.

Pain severity was evaluated using the Visual Analog Scale, the Modified Brief Pain Inventory-Short Form, and the Neuropathy Pain Scale. The Visual Analog Scale was scored within a range of 0-100 with 0=no pain and 100=the worst imaginable pain. The Brief Pain Inventory is made up of two parts: total pain and pain interference. The total pain score is the sum of most, least, average, and now pain scored within a range of 0-10 with 0=no pain and 10=pain as bad as you can imagine. The pain interference score is the sum of affective and activity interference - how pain interfered with general activity, mood, walking ability, normal work, relationships, sleep, and enjoyment of life. It was scored within a range of 0-10 with 0=pain does not interfere and 10=pain completely interferes. The Neuropathy Pain Scale total is the sum of 10 items -cold, sharp, deep, dull, hot, intense, itchy, sensitive, surface, and unpleasant pain scored within a range of 0-10 with 0=no pain and 10=most pain. (NCT00573261)
Timeframe: baseline and end of 4 week intervention

,
Interventionunits on a scale (Mean)
Visual analog pain ratingBrief pain inventory - Total PainBrief pain inventory - Most PainBrief pain inventory - Least PainBrief pain inventory - Average PainBrief pain inventory - Now painPain interferenceAffective interferenceActivity InterferenceNeuropathy pain scale (total)Cold painSharp painDeep painDull painHot painIntense painItchy painSensitive painSurface painUnpleasant pain
Placebo-21.29-1.36-1.07-0.071-0.640.43-1.43-0.071-1.36-10.31-1.23-0.92-0.230-1.77-1.380-2.31-1.46-1.00
Pregabalin-43.27-9.13-3.33-1.20-2.87-1.73-13.93-5.27-8.67-27.33-2.13-2.53-3.00-2.07-2.53-3.13-4.07-1.60-3.20-3.07

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Assessing the Change of Parameters of Autonomic Nerve Function Such as Heart Rate Variability by Means of the LifeShirt System Upon Treatment of Pregabalin vs. Placebo in Patients With Diabetes and Peripheral Neuropathy.

Heart rate variability parameters yielded by time domain analysis included the number of N-N intervals that differ by more than 50 milliseconds from adjacent intervals divided by the total number of all N-N intervals (pNN50). (NCT00573261)
Timeframe: baseline and at end of a 4-week intervention

InterventionRatio (Mean)
Placebo0.011
Pregabalin0.0015

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Number of Participants With (All Causality) Adverse Events (AEs) and Serious Adverse Events (SAEs)

Counts of participants who had treatment-emergent adverse events (TEAEs), defined as newly occurring or worsening after first dose. Participants with multiple occurrences of an AE within a category were counted once within the category. (NCT00596466)
Timeframe: Baseline up to Week 28

InterventionParticipants (Number)
Non-serious AEsSerious AEs (SAEs)
Pregabalin303

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Number of Participants With Laboratory Test Values of Potential Clinical Importance

Pre-defined criteria were established for each laboratory test (hematology, blood chemistry and urinalysis) to define the values that would be identified as of potential clinical importance. (NCT00596466)
Timeframe: Baseline up to Week 28

InterventionParticipants (Number)
Pregabalin17

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Number of Participants With Clinically Significant Laboratory Abnormalities: Clinical Chemistry

Criteria for clinical chemistry abnormalities included total bilirubin: greater than (>) 1.5*upper limit of normal (ULN); aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase: >3.0*ULN; total protein, albumin: <0.8*LLN or >1.2*ULN; blood urea nitrogen, creatinine: >1.3*ULN; uric acid: >1.2*ULN; sodium: <0.95*LLN or >1.05*ULN; potassium, chloride, calcium: <0.9*LLN or >1.1*ULN; creatine kinase: >2.0*ULN. Clinical significance was judged by investigator. (NCT00599638)
Timeframe: Baseline up to Week 7

InterventionParticipants (Count of Participants)
Pregabalin + PF-004897910
Pregabalin0
Placebo0

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Number of Participants With Clinically Significant Laboratory Abnormalities: Hematology

Criteria for hematology abnormalities included Hemoglobin: <0.8*lower limit of normal (LLN) and hematocrit: <0.8*LLN. Clinical significance was judged by investigator. (NCT00599638)
Timeframe: Baseline up to Week 7

InterventionParticipants (Count of Participants)
Pregabalin + PF-004897910
Pregabalin0
Placebo0

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Number of Participants With Clinically Significant Laboratory Abnormalities: Urinalysis

Urinalysis abnormalities criteria included: urine specific gravity: <1.003 to >1.030; urine pH: <4.5 to >8; urine glucose, urine ketones, urine proteins, urine blood/hemoglobin: >=1. Clinical significance was judged by investigator. (NCT00599638)
Timeframe: Baseline up to Week 7

InterventionParticipants (Count of Participants)
Pregabalin + PF-004897910
Pregabalin0
Placebo0

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Number of Participants With Clinically Significant Vital Signs Abnormalities

Vital signs abnormalities included sitting, standing: systolic, diastolic blood pressure and heart rate. Clinical significance was judged by investigator. (NCT00599638)
Timeframe: Baseline up to Week 7

InterventionParticipants (Count of Participants)
Pregabalin + PF-004897910
Pregabalin2
Placebo1

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Pain Visual Analogue Scale (VAS) at Baseline and Week 4

Participants marked intensity of the pain on a scale, ranging from 0 millimeters (mm) = no pain to 100 mm = worst possible pain, where higher scores indicate more pain. (NCT00599638)
Timeframe: Baseline, Week 4

,,
Interventionmm (Mean)
BaselineWeek 4
Placebo67.9255.92
Pregabalin65.9263.79
Pregabalin + PF-0048979166.4860.88

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Percentage of Participants With Patient Global Impression of Change (PGIC) Score

The PGIC is a participant-rated instrument that measures change in the participants' overall status on a 7-point scale. Scores range from 1 (very much improved) to 7 (very much worse), lower scores indicated more improvement. PGIC was evaluated using 3 categories: improvement (scores 1-3), no change (score 4), and worsening (scores 5-7). In this outcome measure percentage of participants with categories: improved, no change and worsening, based on PGIC score were reported. Cumulative data at end of treatment for both the periods (Period 1 [Week 2] and Period 2 [Week6]) was calculated and reported. (NCT00599638)
Timeframe: End of treatment period (included both Week 2 and Week 6)

,,
Interventionpercentage of participants (Number)
ImprovedNo ChangeWorse
Placebo39.1343.4817.39
Pregabalin77.7818.523.70
Pregabalin + PF-0048979177.4216.136.45

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Mean Pain Score on Daily Pain Rating Scale (DPRS)

"Pain was assessed by using a daily pain rating scale that consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain), higher scores indicate more pain intensity. Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. Self-assessment was performed daily. The mean pain score was defined as the mean of the last 7 daily pain ratings scale scores while taking study medication, at end of each treatment period: Period 1 (Week 2) and Period 2 (Week 6), respectively. Mean pain score had a score range of 0 (no pain) to 10 (worst possible pain), higher scores indicate more pain. Cumulative data of mean pain scores at end of treatment for both the periods was calculated and reported in terms of adjusted mean and standard error." (NCT00599638)
Timeframe: End of treatment period (included both Week 2 and Week 6)

Interventionunits on a scale (Mean)
Pregabalin + PF-004897914.32
Pregabalin4.22
Placebo5.57

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Neuropathic Pain Symptom Inventory (NPSI)

Participant rated 10-item questionnaire to evaluate different symptoms of neuropathic pain (spontaneous pain like [item 1 to 3]: burning, squeezing, pressure; painful attack like [item 4 to 5]: electric shock, stabbing; pain provoked on [item 6 to 8]: light touching, pressure, contact with something cold; abnormal sensations like [item 9 to 10]: pins and needles, tingling). Each item was rated on an 11-point numerical scale range: 0 (absence of pain) to 10 (maximum intensity of pain). Total NPSI scale ranged from 0 (no pain) to 100 (maximum pain). Higher scores indicate a greater intensity of pain. Cumulative data of NPSI scale at end of treatment for both the periods (Period 1 [Week 2] and Period 2 [Week 6]) was calculated and reported in terms of adjusted mean and standard error. (NCT00599638)
Timeframe: End of treatment period (included both Week 2 and Week 6)

Interventionunits on a scale (Mean)
Pregabalin + PF-0048979125.71
Pregabalin25.87
Placebo35.25

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Number of Participants With Clinically Significant Electrocardiogram (ECG) Abnormalities

Criteria for ECG abnormalities: Maximum QTc (corrected QT) interval, QTcB (Bazett's correction formula) and QTcF (Fridericia's correction formula): 450 to less than (<) 480 milliseconds (msec), 480 to <500 msec and greater than equal to (>=) 500 msec; Maximum QTc interval increase from baseline: >=30 to <60 and >=60 (msec); PR interval: >=300 msec and percent change >=25 or 50 percent; QRS complex: percent change >=25 or 50 percent. Clinical significance was judged by investigator. (NCT00599638)
Timeframe: Baseline up to Week 7

InterventionParticipants (Count of Participants)
Pregabalin + PF-004897911
Pregabalin0
Placebo0

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Time to First Request of PCA Hydromorphone

Time (in hours) to first patient controlled analgesic (PCA) pump use after surgery in each of the treatment arms: placebo, pregabalin 300 mg or naproxen 550 mg. (NCT00601458)
Timeframe: First 24 hours following surgery

InterventionHours (Median)
Pregabalin 300 mg7.3
Naproxen Sodium 550 mg9.1
Placebo5.8

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Total Patient Controlled Analgesic (PCA) Hydromorphone Consumption Over the 24 Hours Post-surgery

Total dose (amount) of hydromorphone via patient controlled analgesic (PCA) pump required in the 24 hours post-surgery in each of the treatment arms: placebo, pregabalin 300 mg or naproxen 550 mg. (NCT00601458)
Timeframe: First 24 hours following surgery

Interventionmilligrams (Geometric Mean)
Pregabalin 300 mg2.94
Naproxen Sodium 550 mg2.07
Placebo5.96

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Voxel-wise Blood Oxygen Level Dependent (BOLD) Using fMRI of Brain Activation Signals in Defined Brain Regions in Response to Dynamic Mechanical Allodynia of the Control Side (DMAc)

BOLD brain activation signals in pre-defined ROI. ROI were ACC; AIC_L; AIC_R; MIC_L; MIC_R; PIC_L; PIC_R; Amyg_L; Amyg_R; S1; S2; SensTHAL; MRF; NucCun; PAG. Prior to ROI analysis, a prelimanary anlysis was performed, wherein it was concluded that ROI analysis was to be carried out for DMAa, DMAc amd TH only. In voxel BOLD analysis, signal change is unit less measure but is approximated to percent signal change here by grand scaling (dividing effects by 10000 to get percent signal change). (NCT00610155)
Timeframe: Day 8, 22, 36

,,
Interventionpercent signal change (Least Squares Mean)
ACCAIC_LAIC_RMIC_LMIC_RPIC_LPIC_RAmyg_LAmyg_RS1S2SensTHALMRFNucCunPAG
Placebo0.220.220.29.00.70.86.3-3.4-3.814.613.56.7-1.7-1.8-5.0
Pregabalin-22.3-13.5-10.6-7.6-9.2-14.9-17.2-14.3-10.3-31.6-0.43.91.51.01.6
Tramadol-3.718.210.39.72.8-8.12.41.52.0-4.59.6-2.8-6.6-8.2-12.0

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Voxel-wise Blood Oxygen Level Dependent (BOLD) Using fMRI of Brain Activation Signals in Defined Brain Regions in Response to Thermal Stimulation (TH)

BOLD brain activation signals in pre-defined ROI. ROI were ACC; AIC_L; AIC_R; MIC_L; MIC_R; PIC_L; PIC_R; Amyg_L; Amyg_R; S1; S2; SensTHAL; MRF; NucCun; PAG. Prior to ROI analysis, a prelimanary anlysis was performed, wherein it was concluded that ROI analysis was to be carried out for DMAa, DMAc amd TH only. In voxel BOLD analysis, signal change is unit less measure but is approximated to percent signal change here by grand scaling (dividing effects by 10000 to get percent signal change). (NCT00610155)
Timeframe: Day 8, 22, 36

,,
Interventionpercent signal change (Least Squares Mean)
ACCAIC_LAIC_RMIC_LMIC_RPIC_LPIC_RAmyg_LAmyg_RS1S2SensTHALMRFNucCunPAG
Placebo83.3118.7104.0100.492.034.291.836.467.027.774.510.437.740.544.6
Pregabalin102.292.1121.793.4106.631.275.329.777.5-49.073.619.434.338.763.3
Tramadol92.5103.4104.6105.271.144.695.524.957.237.794.60.825.527.753.6

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Present Pain Intensity Score (PPIS)

"Participants answered: Please rate your pain from 0-10 that best describes the intensity of pain right now. PPIS assessed on 0-10 numeric rating scale (NRS), 0 (no pain) to 10 (worst possible pain)." (NCT00610155)
Timeframe: Day 8, 22, 36

Interventionunits on a scale (Least Squares Mean)
Pregabalin5.54
Tramadol4.13
Placebo5.83

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Daily Pain Score

Daily Pain Score: Day 1 pain intensity over past 24 hours recorded on waking every morning using 0-10 numeric rating scale (NRS): 0 (no pain) to 10 (worst possible pain). The daily pain scores for an average of the last 7 days and an average of last 3 days were calculated. (NCT00610155)
Timeframe: Day -35 through Day 36

,,
Interventionunits on a scale (Least Squares Mean)
Last 7 daysLast 3 days
Placebo6.406.33
Pregabalin5.575.46
Tramadol5.285.10

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Voxel-wise Blood Oxygen Level Dependent (BOLD) Using fMRI of Brain Activation Signals in Defined Brain Regions in Response to Dynamic Mechanical Allodynia of the Affected Side (DMAa)

BOLD brain activation signals in pre-defined region of interest(ROI):anterior cingulate cortex(ACC);left,right anterior cortex([AIC_L ],[AIC_R]);left,right mid-insular cortex([MIC_L],[MIC_R]);left,right posterior insular cortex([PIC_L],[PIC_R]);left,right amygdala([Amyg_L],[Amyg_R]);primary,secondary somatosensory cortex([S1],[S2]);sensory part of thalamus(SensTHAL);midbrain reticular formation(MRF);nucleus cuneiformis(NucCun);periaqueductal gray(PAG). Prior to ROI analysis, a prelimanary anlysis was performed, wherein it was concluded that ROI analysis was to be carried out for DMAa, DMAc amd TH only. In voxel BOLD analysis,signal change is unit less measure but approximated to percent signal change by grand scaling(effects divided by 10000 to get percent signal change). (NCT00610155)
Timeframe: Day 8, 22, 36

,,
Interventionpercent signal change (Least Squares Mean)
ACCAIC_LAIC_RMIC_LMIC_RPIC_LPIC_RAmyg_LAmyg_RS1S2SensTHALMRFNucCunPAG
Placebo7.430.817.130.018.3-0.36.58.521.7-2.910.89.611.712.92.5
Pregabalin-17.38.111.13.88.6-6.8-13.6-5.7-1.4-28.52.58.07.01.1-3.8
Tramadol18.623.321.923.413.4-5.82.95.520.3-4.1-3.216.56.4-0.9-15.3

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Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 2

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 2 post-treatment discontinuation (discontinuation occurred prior to Week 9)

Interventionunits on a scale (Mean)
Pregabalin High Dose-12.0
Pregabalin Low Dose-5.9
Lorazepam-9.7

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Physician's Withdrawal Checklist (PWC) Score for Cohort 3 (6-Month Last Visit)

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Week 1, 2 post-treatment discontinuation (discontinuation occurred after Week 15 to Week 24)

,,,,,
Interventionunits on a scale (Mean)
Discontinuation Week 1 (n=109,30,94,29,99,30)Discontinuation Week 2 (n=106,29,84,26,93,30)
Lorazepam, Lorazepam8.07.1
Lorazepam, Placebo4.64.6
Pregabalin High Dose, Placebo4.94.1
Pregabalin High Dose, Pregabalin High Dose6.87.9
Pregabalin Low Dose, Placebo7.47.1
Pregabalin Low Dose, Pregabalin Low Dose5.15.7

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Hamilton Anxiety Scale (HAM-A) for Cohort 2 (3-Month Last Visit)

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Week 1, 2 post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

,,
Interventionunits on a scale (Mean)
Discontinuation Week 1 (n=58,52,48)Discontinuation Week 2 (n=54,49,44)
Lorazepam8.88.3
Pregabalin High Dose9.69.0
Pregabalin Low Dose9.49.9

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Change From Baseline in Clinical Global Impression - Severity (CGI-S) Score at Week 12

CGI-S: 7-point clinician rated scale to assess severity of participant's current illness state; range: 1 (normal - not ill at all) to 7 (among the most extremely ill patients). Higher score = more affected. (NCT00624780)
Timeframe: Baseline, Week 12

Interventionunits on a scale (Mean)
Pregabalin High Dose-2.3
Pregabalin Low Dose-2.1
Lorazepam-2.1

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Change From Baseline in Clinical Global Impression - Severity (CGI-S) Score at Week 24

CGI-S: 7-point clinician rated scale to assess severity of participant's current illness state; range: 1 (normal - not ill at all) to 7 (among the most extremely ill patients). Higher score = more affected (NCT00624780)
Timeframe: Baseline, Week 24

Interventionunits on a scale (Mean)
Pregabalin High Dose, Pregabalin High Dose-2.4
Pregabalin High Dose, Placebo-2.3
Pregabalin Low Dose, Pregabalin Low Dose-2.4
Pregabalin Low Dose, Placebo-2.0
Lorazepam, Lorazepam-2.5
Lorazepam, Placebo-2.2

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Number of Participants With Rebound Anxiety for Cohort 2 (3-Month Last Visit)

Rebound anxiety was defined as a rapid return of the participant's original symptoms following drug discontinuation, that were worse compared to baseline. This was characterized by a HAM-A score at the Discontinuation Week 1 or Week 2 greater than or equal to the baseline value. (NCT00624780)
Timeframe: 2 weeks post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

Interventionparticipants (Number)
Pregabalin High Dose3
Pregabalin Low Dose1
Lorazepam2

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Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 2 (3-Month Last Visit) at Discontinuation Week 2

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 2 post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

Interventionunits on a scale (Mean)
Pregabalin High Dose-15.6
Pregabalin Low Dose-14.9
Lorazepam-16.0

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Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 3 (6-Month Last Visit) at Discontinuation Week 2

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 2 post-treatment discontinuation (discontinuation occurred after Week 15 to Week 24)

Interventionunits on a scale (Mean)
Pregabalin High Dose, Pregabalin High Dose-16.6
Pregabalin High Dose, Placebo-19.1
Pregabalin Low Dose, Pregabalin Low Dose-18.3
Pregabalin Low Dose, Placebo-16.0
Lorazepam, Lorazepam-16.7
Lorazepam, Placebo-18.7

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Change From Baseline in Hamilton Anxiety Scale (HAM-A) Score at Week 12

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 12

Interventionunits on a scale (Mean)
Pregabalin High Dose-17.4
Pregabalin Low Dose-16.0
Lorazepam-16.7

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Change From Baseline in Hamilton Anxiety Scale (HAM-A) Score at Week 24

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 24

Interventionunits on a scale (Mean)
Pregabalin High Dose, Pregabalin High Dose-18.7
Pregabalin High Dose, Placebo-17.5
Pregabalin Low Dose, Pregabalin Low Dose-18.2
Pregabalin Low Dose, Placebo-14.9
Lorazepam, Lorazepam-19.0
Lorazepam, Placebo-17.5

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Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 2

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 2 post-treatment discontinuation (discontinuation occurred prior to Week 9)

Interventionunits on a scale (Mean)
Pregabalin High Dose-2.0
Pregabalin Low Dose-2.7
Lorazepam-3.2

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Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 2 (3-Month Last Visit) at Discontinuation Week 2

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 2 post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

Interventionunits on a scale (Mean)
Pregabalin High Dose2.1
Pregabalin Low Dose2.0
Lorazepam1.6

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Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 3 (6-Month Last Visit) at Discontinuation Week 2

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 2 post-treatment discontinuation (discontinuation occurred after Week 15 to Week 24)

Interventionunits on a scale (Mean)
Pregabalin High Dose, Pregabalin High Dose2.8
Pregabalin High Dose, Placebo-1.0
Pregabalin Low Dose, Pregabalin Low Dose1.7
Pregabalin Low Dose, Placebo1.8
Lorazepam, Lorazepam2.2
Lorazepam, Placebo-0.1

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Clinical Global Impression - Improvement (CGI-I) Score at the End of Period 1

CGI-I: 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Improvement is defined as a score of 1 (very much improved), 2 (much improved), or 3 (minimally improved) on the scale. (NCT00624780)
Timeframe: Week 12

Interventionunits on a scale (Mean)
Pregabalin High Dose1.9
Pregabalin Low Dose1.9
Lorazepam1.9

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Clinical Global Impression - Improvement (CGI-I) Score at the End of Period 2

CGI-I: 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Improvement is defined as a score of 1 (very much improved), 2 (much improved), or 3 (minimally improved) on the scale. (NCT00624780)
Timeframe: Week 24

Interventionunits on a scale (Mean)
Pregabalin High Dose, Pregabalin High Dose1.7
Pregabalin High Dose, Placebo1.9
Pregabalin Low Dose, Pregabalin Low Dose1.6
Pregabalin Low Dose, Placebo2.3
Lorazepam, Lorazepam1.5
Lorazepam, Placebo2.0

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Number of Participants With Rebound Anxiety for Cohort 1 (Less Than 3-Month Last Visit)

Rebound anxiety was defined as a rapid return of the participant's original symptoms following drug discontinuation, that were worse compared to baseline. This was characterized by a HAM-A score at the Discontinuation Week 1 or Week 2 greater than or equal to the baseline value. (NCT00624780)
Timeframe: 2 weeks post-treatment discontinuation (discontinuation occurred prior to Week 9)

Interventionparticipants (Number)
Pregabalin High Dose1
Pregabalin Low Dose5
Lorazepam1

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Number of Participants With Rebound Anxiety for Cohort 3 (6-Month Last Visit)

Rebound anxiety was defined as a rapid return of the participant's original symptoms following drug discontinuation, that were worse compared to baseline. This was characterized by a HAM-A score at the Discontinuation Week 1 or Week 2 greater than or equal to the baseline value. (NCT00624780)
Timeframe: 2 weeks post-treatment discontinuation (discontinuation occurred after Week 15 to Week 24)

Interventionparticipants (Number)
Pregabalin High Dose, Pregabalin High Dose4
Pregabalin High Dose, Placebo0
Pregabalin Low Dose, Pregabalin Low Dose0
Pregabalin Low Dose, Placebo1
Lorazepam, Lorazepam6
Lorazepam, Placebo0

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Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 1

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 1 post-treatment discontinuation (discontinuation occurred prior to Week 9)

,,
Interventionunits on a scale (Mean)
Baseline (n=15,19,21)Change at Discontinuation Week 1 (n=15,19,18)
Lorazepam24.4-9.9
Pregabalin High Dose25.8-7.7
Pregabalin Low Dose24.9-5.9

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Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 2 (3-Month Last Visit) at Discontinuation Week 1

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 1 post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

,,
Interventionunits on a scale (Mean)
BaselineChange at Discontinuation Week 1
Lorazepam24.6-15.8
Pregabalin High Dose25.0-15.3
Pregabalin Low Dose24.7-15.3

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Change From Baseline in Hamilton Anxiety Scale (HAM-A) for Cohort 3 (6-Month Last Visit) at Discontinuation Week 1

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 1 post-treatment discontinuation (discontinuation occurred after Week 15 to Week 24)

,,,,,
Interventionunits on a scale (Mean)
BaselineChange at Discontinuation Week 1
Lorazepam, Lorazepam24.6-16.2
Lorazepam, Placebo24.9-19.1
Pregabalin High Dose, Placebo24.2-18.7
Pregabalin High Dose, Pregabalin High Dose25.5-17.6
Pregabalin Low Dose, Placebo24.9-16.5
Pregabalin Low Dose, Pregabalin Low Dose24.7-18.4

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Change From Baseline in Physician's Withdrawal Checklist (PWC) Score for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 1 and 2

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Baseline, Week 1, 2 post-treatment discontinuation (discontinuation occurred prior to Week 9)

,,
Interventionunits on a scale (Mean)
Baseline (n=14,19,21)Change at Discontinuation Week 1 (n=14,19,18)Change at Discontinuation Week 2 (n=13,15,16)
Lorazepam16.4-5.9-5.4
Pregabalin High Dose13.6-3.4-4.7
Pregabalin Low Dose17.6-3.3-2.7

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Change From Baseline in Physician's Withdrawal Checklist (PWC) Score for Cohort 2 (3-Month Last Visit) at Discontinuation Week 1 and 2

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Baseline, Week 1, 2 post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

,,
Interventionunits on a scale (Mean)
Baseline (n=57,51,52)Change at Discontinuation Week 1 (n=57,51,49)Change at Discontinuation Week 2 (n=53,48,44)
Lorazepam14.8-7.6-8.0
Pregabalin High Dose17.4-8.5-8.3
Pregabalin Low Dose17.1-9.3-8.7

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Change From Baseline in Physician's Withdrawal Checklist (PWC) Score for Cohort 3 (6-Month Last Visit) at Discontinuation Week 1 and 2

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Baseline, Week 1, 2 post-treatment discontinuation (discontinuation [DC] occurred after Week 15 to Week 24)

,,,,,
Interventionunits on a scale (Mean)
Baseline (n=109,30,94,29,99,30)Change at DC Week 1 (n=109,30,94,29,99,30)Change at DC Week 2 (n=106,29,84,26,92,30)
Lorazepam, Lorazepam16.8-8.7-9.6
Lorazepam, Placebo14.9-10.4-10.3
Pregabalin High Dose, Placebo17.8-12.9-13.8
Pregabalin High Dose, Pregabalin High Dose17.8-11.0-9.8
Pregabalin Low Dose, Placebo17.4-9.9-10.2
Pregabalin Low Dose, Pregabalin Low Dose16.1-11.0-10.8

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Change From Last Visit of Treatment in Hamilton Anxiety Scale (HAM-A) for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 1 and 2

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 1, 2 post-treatment discontinuation (discontinuation occurred prior to Week 9)

,,
Interventionunits on a scale (Mean)
Last visit on treatment (n=15,18,20)Change at Discontinuation Week 1 (n=15,18,18)Change at Discontinuation Week 2 (n=14,15,16)
Lorazepam16.1-2.4-2.2
Pregabalin High Dose16.12.0-2.3
Pregabalin Low Dose21.6-2.3-3.5

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Change From Last Visit of Treatment in Hamilton Anxiety Scale (HAM-A) for Cohort 2 (3-Month Last Visit) at Discontinuation Week 1 and 2

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 1, 2 post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

,,
Interventionunits on a scale (Mean)
Last visit on treatment (n=58,52,50)Change at Discontinuation Week 1 (n=58,52,48)Change at Discontinuation Week 2 (n=54,49,44)
Lorazepam6.72.31.5
Pregabalin High Dose8.01.71.5
Pregabalin Low Dose8.50.91.5

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Change From Last Visit of Treatment in Hamilton Anxiety Scale (HAM-A) for Cohort 3 (6-Month Last Visit) at Discontinuation Week 1 and 2

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 1, 2 post-treatment discontinuation (discontinuation [DC] occurred after Week 15 to Week 24)

,,,,,
Interventionunits on a scale (Mean)
Last visit on treatment (n=109,30,93,29,100,30)Change at DC Week 1 (n=109,30,93,28,99,30)Change at DC Week 2 (n=107,29,84,26,94,30)
Lorazepam, Lorazepam5.63.02.2
Lorazepam, Placebo5.50.30.6
Pregabalin High Dose, Placebo5.5-0.0-0.8
Pregabalin High Dose, Pregabalin High Dose6.31.62.5
Pregabalin Low Dose, Placebo8.30.61.5
Pregabalin Low Dose, Pregabalin Low Dose5.60.71.2

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Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 1 (Less Than 3-Month Last Visit) at Discontinuation Week 1

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 1 post-treatment discontinuation (discontinuation occurred prior to Week 9)

,,
Interventionunits on a scale (Mean)
Last visit on treatment (n=15,18,20)Change at Discontinuation Week 1 (n=15,18,18)
Lorazepam13.1-4.2
Pregabalin High Dose10.10.1
Pregabalin Low Dose16.8-2.8

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Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 2 (3-Month Last Visit) at Discontinuation Week 1

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 1 post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

,,
Interventionunits on a scale (Mean)
Last visit on treatmentChange at Discontinuation Week 1
Lorazepam5.02.3
Pregabalin High Dose7.21.9
Pregabalin Low Dose6.51.4

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Change From Last Visit on Treatment in Physician's Withdrawal Checklist (PWC) Score for Cohort 3 (6-Month Last Visit) at Discontinuation Week 1

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Last visit on treatment, Week 1 post-treatment discontinuation (discontinuation occurred after Week 15 to Week 24)

,,,,,
Interventionunits on a scale (Mean)
Last visit on treatmentChange at Discontinuation Week 1
Lorazepam, Lorazepam5.33.0
Lorazepam, Placebo4.7-0.1
Pregabalin High Dose, Placebo4.90.0
Pregabalin High Dose, Pregabalin High Dose5.21.7
Pregabalin Low Dose, Placebo6.51.0
Pregabalin Low Dose, Pregabalin Low Dose3.91.1

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Clinical Global Impression - Severity (CGI-S) Score for Period 1

CGI-S: 7-point clinician rated scale to assess severity of participant's current illness state; range: 1 (normal - not ill at all) to 7 (among the most extremely ill patients). Higher score = more affected. (NCT00624780)
Timeframe: Baseline, Week 12

,,
Interventionunits on a scale (Mean)
BaselineWeek 12
Lorazepam4.42.3
Pregabalin High Dose4.62.3
Pregabalin Low Dose4.52.5

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Clinical Global Impression - Severity (CGI-S) Score for Period 2

CGI-S: 7-point clinician rated scale to assess severity of participant's current illness state; range: 1 (normal - not ill at all) to 7 (among the most extremely ill patients). Higher score = more affected (NCT00624780)
Timeframe: Baseline, Week 24

,,,,,
Interventionunits on a scale (Mean)
BaselineWeek 24
Lorazepam, Lorazepam4.41.9
Lorazepam, Placebo4.52.4
Pregabalin High Dose, Placebo4.52.2
Pregabalin High Dose, Pregabalin High Dose4.72.3
Pregabalin Low Dose, Placebo4.52.5
Pregabalin Low Dose, Pregabalin Low Dose4.52.1

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Hamilton Anxiety Scale (HAM-A) for Cohort 1 (Less Than 3-Month Last Visit)

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Week 1, 2 post-treatment discontinuation (discontinuation occurred prior to Week 9)

,,
Interventionunits on a scale (Mean)
Discontinuation Week 1 (n=15,19,18)Discontinuation Week 2 (n=14,15,16)
Lorazepam14.114.6
Pregabalin High Dose18.113.9
Pregabalin Low Dose19.018.6

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Hamilton Anxiety Scale (HAM-A) Score for Cohort 3 (6-Month Last Visit)

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Week 1, 2 post-treatment discontinuation (discontinuation [DC] occurred after Week 15 to Week 24)

,,,,,
Interventionunits on a scale (Mean)
Discontinuation Week 1 (n=109,30,94,28,99,30)Discontinuation Week 2 (n=107,29,84,26,94,30)
Lorazepam, Lorazepam8.47.9
Lorazepam, Placebo7.076.1
Pregabalin High Dose, Placebo5.55.0
Pregabalin High Dose, Pregabalin High Dose7.98.9
Pregabalin Low Dose, Placebo8.49.2
Pregabalin Low Dose, Pregabalin Low Dose6.36.5

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Hamilton Anxiety Scale (HAM-A) Score for Period 1

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 12

,,
Interventionunits on a scale (Mean)
BaselineWeek 12
Lorazepam24.57.9
Pregabalin High Dose25.38.0
Pregabalin Low Dose24.98.9

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Hamilton Anxiety Scale (HAM-A) Score for Period 2

HAM-A measures treatment-related changes in generalized anxiety symptoms; 14 item questionnaire scored 0 (not present) to 4 (very severe); total possible range 0 to 56. Lower score indicates less affected. (NCT00624780)
Timeframe: Baseline, Week 24

,,,,,
Interventionunits on a scale (Mean)
BaselineWeek 24
Lorazepam, Lorazepam24.75.7
Lorazepam, Placebo24.16.6
Pregabalin High Dose, Placebo24.67.1
Pregabalin High Dose, Pregabalin High Dose25.67.0
Pregabalin Low Dose, Placebo25.110.2
Pregabalin Low Dose, Pregabalin Low Dose24.86.5

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Number of Participants With Discontinuation-Emergent Signs and Symptoms (DESS) for Cohort 1 (Less Than 3-Month Last Visit)

DESS adverse events, a subset of Treatment Emergent Signs and Symptoms (TESS), were defined as those spontaneously reported adverse events that developed or existed prior to but worsened during Discontinuation Week 1 and 2. (NCT00624780)
Timeframe: 2 weeks post-treatment discontinuation (discontinuation occurred prior to Week 9)

,,
Interventionparticipants (Number)
Newly developed DESSWorsened DESS
Lorazepam30
Pregabalin High Dose60
Pregabalin Low Dose00

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Number of Participants With Discontinuation-Emergent Signs and Symptoms (DESS) for Cohort 2 (3-Month Last Visit)

DESS adverse events, a subset of Treatment Emergent Signs and Symptoms (TESS), were defined as those spontaneously reported adverse events that developed or existed prior to but worsened during Discontinuation Week 1 and 2. (NCT00624780)
Timeframe: 2 weeks post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

,,
Interventionparticipants (Number)
Newly developed DESSWorsened DESS
Lorazepam361
Pregabalin High Dose401
Pregabalin Low Dose382

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Number of Participants With Discontinuation-Emergent Signs and Symptoms (DESS) for Cohort 3 (6-Month Last Visit)

DESS adverse events, a subset of Treatment Emergent Signs and Symptoms (TESS), were defined as those spontaneously reported adverse events that developed or existed prior to but worsened during Discontinuation Week 1 and 2. (NCT00624780)
Timeframe: 2 weeks post-treatment discontinuation (discontinuation occurred after Week 15 to Week 24)

,,,,,
Interventionparticipants (Number)
Newly developed DESSWorsened DESS
Lorazepam, Lorazepam505
Lorazepam, Placebo70
Pregabalin High Dose, Placebo50
Pregabalin High Dose, Pregabalin High Dose782
Pregabalin Low Dose, Placebo171
Pregabalin Low Dose, Pregabalin Low Dose352

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Number of Participants With Treatment-Emergent Adverse Events (AEs)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. Treatment-emergent are events between first dose of study drug and Week 12, for period 1, and between Week 13 and Week 24, for period 2, that were absent before treatment or that worsened relative to pretreatment state. (NCT00624780)
Timeframe: Baseline up to Week 12 (period 1), Week 13 up to Week 24 (period 2)

,,,,,
Interventionparticipants (Number)
Period 1 (n=154,52,154,52,153,50)Period 2 (n=121,39,112,38,114,39)
Lorazepam, Lorazepam9552
Lorazepam, Placebo3520
Pregabalin High Dose, Placebo3726
Pregabalin High Dose, Pregabalin High Dose10362
Pregabalin Low Dose, Placebo4018
Pregabalin Low Dose, Pregabalin Low Dose10062

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Physician's Withdrawal Checklist (PWC) Score for Cohort 1 (Less Than 3-Month Last Visit)

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Week 1, 2 post-treatment discontinuation (discontinuation occurred prior to Week 9)

,,
Interventionunits on a scale (Mean)
Discontinuation Week 1 (n=15,19,18)Discontinuation Week 2 (n=14,15,16)
Lorazepam9.110.6
Pregabalin High Dose10.28.2
Pregabalin Low Dose14.314.1

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Physician's Withdrawal Checklist (PWC) Score for Cohort 2 (3-Month Last Visit)

PWC: 20 item physician rated interview measuring anxiolytic drug withdrawal-related signs and symptoms (gastrointestinal, mood, sleep, motor, somatic, perception and cognition); range 0 (not present) to 3 (severe); total score range: 0 to 60; higher score = more affected. (NCT00624780)
Timeframe: Week 1, 2 post-treatment discontinuation (discontinuation occurred from Week 9 to Week 15)

,,
Interventionunits on a scale (Mean)
Discontinuation Week 1 (n=58,52,49)Discontinuation Week 2 (n=54,49,44)
Lorazepam7.36.9
Pregabalin High Dose9.18.9
Pregabalin Low Dose8.08.3

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Change From Baseline in Sperm Motility to Week 12

Mean sperm motility (percent motility representing grade a+b) was average of 2 samples collected at that visit. Normal value is ≥50% motility measured within 60 minutes of collection; higher values=greater percentage of sperm with motility. Week 12 was average of last 2 values within window of 2 to 133 days from Study Day 1 and at least 1 of the 2 values was non-missing. If there was only 1 assessment date within the stated window, then Week 12 was the value of that single assessment. If all the values within the window were missing, then the records were not to be used for Week 12 analysis. (NCT00631696)
Timeframe: Baseline, Week 12 (last observation in the Week 12 window)

,
Interventionpercent motility (Mean)
BaselineChange to Week 12
Placebo61.38-2.71
Pregabalin61.95-3.94

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Change From Baseline in Follicle Stimulating Hormone (FSH) to Week 12

FSH minimum normal range 1.4 IU/L to maximum normal range 18.1 IU/L. Week 12 was the last non-missing value within 2 to 133 days from Study Day 1. If there were multiple observations between the stated study days (all non-missing or a combination of missing and non-missing), then the latest non-missing value was selected for analysis. If all the values within the stated window were missing, then the records were not to be used for Week 12 analysis. (NCT00631696)
Timeframe: Baseline, Week 12 (last observation in the Week 12 window)

,
InterventionIU/L (Mean)
BaselineChange to Week 12
Placebo3.680.08
Pregabalin3.17-0.05

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Percentage of Participants With a 50 Percent (%) or More Reduction in Sperm Concentration From Baseline (Bsl) to End of Study (EOS)

Baseline is the average of sperm concentrations from semen samples collected on or before Study Day 1. End of study is average of sperm concentrations from semen samples collected at end of washout period (Week 26) following 12 weeks of double-blind treatment. Mean sperm concentration (MSC) of a visit is average of the 2 sperm concentration samples collected at that visit. If sperm concentration was not assessed at Week 26, then the last assessment on or after Week 12 (end of treatment) was used instead. Confidence intervals (CI) based on exact distribution. (NCT00631696)
Timeframe: Baseline, End of Study (last observation at Week 26 or last assessment on or after Week 12 if no data at Week 26)

Interventionpercentage of participants (Number)
Pregabalin9.2
Placebo3.2

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Change From Baseline in Follicle Stimulating Hormone (FSH) to End of Study (EOS)

FSH minimum normal range 1.4 International units per liter (IU/L) to maximum normal range 18.1 IU/L. End of study was the end of the washout period (Week 26) following 12 weeks of double-blind treatment. If the semen parameter was not assessed at Week 26, then the last assessment on or after Week 12 (end of treatment) was used instead. (NCT00631696)
Timeframe: Baseline, End of Study (last observation at Week 26 or last assessment on or after Week 12 if no data at Week 26)

,
InterventionIU/L (Mean)
BaselineChange to EOS
Placebo3.680.22
Pregabalin3.170.14

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Change From Baseline in Follicle Stimulating Hormone (FSH) to Week 26

FSH minimum normal range 1.4 IU/L to maximum normal range 18.1 IU/L. Week 26 was the non-missing value within 134 to 252 days from Study Day 1. If there were multiple observations between the stated study days (all non-missing or a combination of missing and non-missing), then the latest non-missing value was selected for analysis. If all the values within the stated window were missing, then the records were not to be used for Week 26 analysis. (NCT00631696)
Timeframe: Baseline, Week 26 (last observation in the Week 26 window)

,
InterventionIU/L (Mean)
BaselineChange to Week 26
Placebo3.690.21
Pregabalin3.200.16

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Change From Baseline in Sperm Motility to End of Study (EOS)

Mean sperm motility (percent motility representing grade a+b [a=sperm with progressive, straight-line motility; b=non-linear motility]) was average of 2 samples collected at that visit. Normal value is ≥50% motility measured within 60 minutes of collection; higher values=greater percentage of sperm with motility. End of study was the end of the washout period (Week 26) following 12 weeks of double-blind treatment. If the semen parameter was not assessed at Week 26, then the last assessment on or after Week 12 (end of treatment) was used instead. (NCT00631696)
Timeframe: Baseline, End of Study (last observation at Week 26 or last assessment on or after Week 12 if no data at Week 26)

,
Interventionpercent motility (Mean)
BaselineChange to EOS
Placebo61.4-1.8
Pregabalin61.9-3.2

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Change From Baseline in Sperm Motility to Week 26

Mean sperm motility (percent motility representing grade a+b) was the average of 2 samples collected at that visit. Normal value is ≥50% motility measured within 60 minutes of collection; higher values=greater percentage of sperm with motility. Week 26 was average of the last 2 values within window of 134 to 252 days from Study Day 1 and at least 1 of the 2 values was non-missing. If only 1 assessment date within the stated window, Week 26 was the value of that single assessment. If all values within window were missing, the records were not to be used for Week 26 analysis. (NCT00631696)
Timeframe: Baseline, Week 26 (last observation in the Week 26 window)

,
Interventionpercent motility (Mean)
BaselineChange to Week 26
Placebo61.2-1.8
Pregabalin61.8-2.6

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Change From Baseline in Testosterone to End of Study (EOS)

End of study was the end of the washout period (Week 26) following 12 weeks of double-blind treatment. If the semen parameter was not assessed at Week 26, then the last assessment on or after Week 12 (end of treatment) was used instead. (NCT00631696)
Timeframe: Baseline, End of Study (last observation at Week 26 or last assessment on or after Week 12 if no data at Week 26)

,
Interventionnanograms per deciliter (ng/dL) (Mean)
BaselineChange to EOS
Placebo481.80.8
Pregabalin518.210.4

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Change From Baseline in Testosterone to Week 12

Week 12 was the last non-missing value within 2 to 133 days from Study Day 1. If there were multiple observations between the stated study days (all non-missing or a combination of missing and non-missing), then the latest non-missing value was selected for analysis. If all the values within the stated window were missing, then the records were not to be used for Week 12 analysis. (NCT00631696)
Timeframe: Baseline, Week 12 (last observation in the Week 12 window)

,
Interventionng/dL (Mean)
BaselineChange to Week 12
Placebo481.80.0
Pregabalin518.2-14.8

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Change From Baseline in Testosterone to Week 26

Week 26 was the non-missing value within 134 to 252 days from Study Day 1. If there were multiple observations between the stated study days (all non-missing or a combination of missing and non-missing), then the latest non-missing value was selected for analysis. If all the values within the stated window were missing, then the records were not to be used for Week 26 analysis. (NCT00631696)
Timeframe: Baseline, Week 26 (last observation in the Week 26 window)

,
Interventionng/dL (Mean)
BaselineChange to Week 26
Placebo474.62.6
Pregabalin517.913.8

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Total Distance

Subjects were instructed to walk on the treadmill and to tell the research coordinator to stop testing when they reached the point at which they typically would need to stop and sit down, or until 15 minutes had elapsed. When the subject reached their maximum distance, the treadmill testing was stopped. This was recorded as total distance based on number of minutes and seconds walked. Minutes was converted to meters based on calculation of defined speed of the treadmill. (NCT00638443)
Timeframe: 10 days

Interventionmeters (Mean)
Pregabalin237.49
Diphenhydramine261.55

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Time to First Symptoms of Moderate Pain

Using the Numeric Rating Scale (NRS) (0=no pain, 10=worst pain imaginable)the time to first symptoms (Tfirst) with a NRS score greater than or equal to 4 (moderate pain level), with treadmill ambulation was measured. (NCT00638443)
Timeframe: 10 days

Interventionminutes (Mean)
Pregabalin2.52
Diphenhydramine3.06

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Area Under the Curve

Subjects were instructed to walk on the treadmill and to tell the research coordinator to stop testing when they reached the point at which they typically would need to stop and sit down, or until 15 minutes had elapsed. At defined intervals (every 30 seconds) subjects were asked what their pain level was according to the NRS. The area under the curve of present pain intensity multiplied by the amount of time the subject walked. (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale * minutes (Mean)
Pregabalin100.59
Diphenhydramine95.26

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Visual Analog Scale (VAS)

The VAS asked subjects to place a mark indicative of their low back pain during the past day on a 100mm line, with 0mm representing no pain and 100mm representing extreme pain. (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale (Mean)
Pregabalin52.31
Diphenhydramine46.31

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Swiss Spinal Stenosis- Physical Function

The SSS is a series of questions asking about symptom severity, physical function, and satisfaction. The physical function section is a series of 5 questions (maximum 4 points per question) and asks to rate function for each question based on comfortably, sometimes with pain, always with pain, no functional ability. The total score (max=20) is divided by five. The maximum score for the physical function section (max=4) indicates no ability to function. (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale (Mean)
Pregabalin2.40
Diphenhydramine2.94

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Final Pain as Measured by NRS

Subjects were instructed to walk on the treadmill and to tell the research coordinator to stop testing when they reached the point at which they typically would need to stop and sit down, or until 15 minutes had elapsed. At defined intervals subjects were asked what their pain level was according to the NRS. When the subject reached their maximum distance, they were asked their NRS score. This was recorded as final pain intensity. Using the Numeric Rating Scale (NRS) (0=no pain, 10=worst pain imaginable)the time to first symptoms (Tfirst) with a NRS score greater than or equal to 4 (moderate pain level), with treadmill ambulation was measured. (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale (Mean)
Pregabalin1.82
Diphenhydramine1.53

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Modified Brief Pain Inventory (mBPI)- Interference Score

The mBPI is a series of questions that rates the severity and impact of pain on daily function. The questionnaire is made up of 4 pain severity items using the NRS scale, and seven pain interference sub-scales. The final interference score is an average of the seven sub-scales (0 indicating no interference and 10 indicating complete interference). (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale (Mean)
Pregabalin3.70
Diphenhydramine3.58

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Oswestry Disability Index (ODI) Score

The ODI is a set of 10 questions each with five choices (maximum score of 5 points per question) designed to determine how back pain has affected the ability to manage everyday life (pain intensity, personal care, lifting, walking, sitting, standing, sleeping, social life, traveling, and change positions). A total score range of 0-50; score of 0 indicates no disability and a score of 50 would indicate 100% disability. (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale (Mean)
Pregabalin37.77
Diphenhydramine36.49

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Patient Global Assessment (PGA)

Subjects were asked to rate their low back pain according to the PGA. PGA is the impact of disease activity. PGA was measured on a 5-point scale, where 1=very good, 2=good, 3=fair, 4=poor, and 5=very poor. (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale (Mean)
Pregabalin2.75
Diphenhydramine2.83

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Roland Morris Disability Questionnaire

The RMDQ consists of 24 yes/no statements about activity limitations due to back pain. These questions center on movement, ambulation, and self-care activities. Positive (yes) answers each contribute 1 point to cumulative score with total scores ranging from 0 (no disability) to 24 (severely disabled). (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale (Mean)
Pregabalin12.98
Diphenhydramine11.48

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Swiss Spinal Stenosis (SSS) Score- Symptom Severity

The SSS is a series of questions asking about symptom severity, physical function, and satisfaction. The symptom severity section is a set of 7 questions (maximum score is 5 points per question) and asks to rate pain for each question based on no pain, mild, moderate, severe or very severe pain. The total score (maximum=35) is added up and divided by seven. The maximum score for the symptom severity section (score=5) indicates very severe symptom severity. (NCT00638443)
Timeframe: 10 days

Interventionunits on a scale (Mean)
Pregabalin3.09
Diphenhydramine2.94

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Recovery Time

After the subject completed the treadmill test they were asked to immediately return to the seated position. At this point a timer was started. When the subjects pain level returned to baseline (level of pain subject felt in a seated position before walking) the time was stopped. This was recorded as recovery time. Maximum recovery time is 15 minutes. (NCT00638443)
Timeframe: 10 days

Interventionminutes (Mean)
Pregabalin2.36
Diphenhydramine3.15

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Number of Participants Achieving Various Levels of Percent Reduction From Baseline in the Mean 24-hour Average Pain Intensity Score at EOMT Using LOCF Data

Baseline and EOMT scores are the calculated means of the 24-hour average pain scores for each participant during the last 7 days prior to randomization and EOMT, respectively. Percent reduction from baseline was calculated as the [(EOMT score minus the baseline score)divided by the baseline score], multiplied by 100. The PI-NRS is an 11-point scale (0=no pain, 10=pain as bad as you can imagine) by which a participant assesses their 24-hour average pain intensity. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

,,,,
Interventionparticipants (Number)
>= 0% reduction from baseline>= 10% reduction from baseline>= 20% reduction from baseline>= 30% reduction from baseline>= 40% reduction from baseline>= 50% reduction from baseline>= 60% reduction from baseline>= 70% reduction from baseline>= 80% reduction from baseline>= 90% reduction from baseline100% reduction from baseline
GEn 1200 mg/Day55433631282621171154
GEn 2400 mg/Day504234251915116521
GEn 3600 mg/Day101917866554641251785
PGB 300 mg/Day55423628201495433
Placebo103867357463526151143

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Change From Baseline in the Mean 24-hour Average Pain Intensity (API) Score at End of Maintenance Treatment (EOMT) Using Last Observation Carried Forward (LOCF) Data

Baseline and EOMT values are the calculated means of the daily 24-hour API scores for each participant during the last 7 days prior to randomization (Baseline) and the earliest date of Week 13 visit/Withdrawal visit/last dose of study drug (EOMT). Participants used a hand-held diary to rate their API over the preceding 24 hours, using an 11-point Pain Intensity Numerical Rating Scale (PI-NRS) (0=no pain, 10=pain as bad as you can imagine). LOCF was used if less than 4 days of diary data were provided. Change from baseline was calculated as the EOMT score minus the Baseline score. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-2.08
GEn 1200 mg/Day-2.43
GEn 2400 mg/Day-2.10
GEn 3600 mg/Day-2.63
PGB 300 mg/Day-1.65

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Change From Baseline in Pain Score After Taking a 50-foot Walk at EOMT

Baseline and EOMT scores are the pain scores each participant reported after taking a 50-foot walk at the randomization and Week 13/Withdrawal visits, respectively, using an 11-point PI-NRS (0=no pain, 10=pain as bad as you can imagine). Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with BMI, baseline pain intensity after 50-foot walk, pain intensity prior to 50-foot walk at the visit being assessed, and grouped center as covariates was used. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-2.38
GEn 1200 mg/Day-2.32
GEn 2400 mg/Day-2.36
GEn 3600 mg/Day-2.52
PGB 300 mg/Day-2.17

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Change From Baseline in the Mean Current (Evening) Pain Intensity Score at EOMT Using LOCF Data

"Current pain is defined as the participant's assessment of pain intensity right now. Participants recorded their current evening pain intensity in the evening before bedtime using an 11-point PI-NRS (0=no pain, 10=pain as bad as you can imagine). Baseline and EOMT are as defined for the primary endpoint. Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with baseline value, BMI, grouped center as covariates was used." (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-2.19
GEn 1200 mg/Day-2.24
GEn 2400 mg/Day-2.10
GEn 3600 mg/Day-2.66
PGB 300 mg/Day-1.65

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Change From Baseline in the Mean Current (Morning) Pain Intensity Score at EOMT Using LOCF Data

"Current pain is defined as the participant's assessment of pain intensity right now. Participants recorded their current morning pain intensity in the morning upon wakening using an 11-point PI-NRS (0=no pain, 10=pain as bad as you can imagine). Baseline and EOMT are as defined for the primary endpoint. Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with baseline value, BMI, grouped center as covariates was used." (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-1.90
GEn 1200 mg/Day-2.08
GEn 2400 mg/Day-1.95
GEn 3600 mg/Day-2.40
PGB 300 mg/Day-1.50

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Change From Baseline in the Mean Daily Dose of Rescue Medication at EOMT Using LOCF Data

Mean daily use of rescue medication (milligrams of acetaminophen) was calculated by determining the average number of tablets taken per day of rescue medication (Commerical Tylenol) during treatment and multiplying that by 500 mg. Baseline and EOMT are as defined for the primary endpoint. Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with baseline value, BMI, grouped center as covariates was used. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionmilligrams (Least Squares Mean)
Placebo-261.99
GEn 1200 mg/Day-171.64
GEn 2400 mg/Day-102.51
GEn 3600 mg/Day-228.54
PGB 300 mg/Day-246.07

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Change From Baseline in the Mean Day-time Average Pain Intensity (API) Score at EOMT Using LOCF Data

Day-time is defined as the time between rising in the morning and going to bed at night. Participants recorded day-time API on a daily basis in the evening before bedtime using an 11-point PI-NRS (0=no pain, 10=pain as bad as you can imagine). Baseline and EOMT are as defined for the primary endpoint. Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with baseline value, BMI, grouped center as covariates was used. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-2.07
GEn 1200 mg/Day-2.35
GEn 2400 mg/Day-2.06
GEn 3600 mg/Day-2.54
PGB 300 mg/Day-1.50

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Change From Baseline in the Mean Day-time Worst Pain Intensity Score at EOMT Using LOCF Data

Day-time worst pain is defined as the partipant's assessment of their worst pain between rising in the morning and going to bed at night. Participants recorded day-time worst pain in the evening before bedtime using an 11-point PI-NRS (0=no pain, 10=pain as bad as you can imagine). Baseline and EOMT are as defined for the primary endpoint. Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with baseline value, BMI, grouped center as covariates was used. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-2.33
GEn 1200 mg/Day-2.35
GEn 2400 mg/Day-2.25
GEn 3600 mg/Day-2.88
PGB 300 mg/Day-1.62

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Change From Baseline in the Mean Night-time Average Pain Intensity (API) Score at EOMT Using LOCF Data

Night-time is defined as the time between going to bed at night and rising in the morning. Participants recorded night-time API on a daily basis in the morning upon awakening using an 11-point PI-NRS (0=no pain, 10=pain as bad as you can imagine). Baseline and EOMT are as defined for the primary endpoint. Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with baseline value, BMI, grouped center as covariates was used. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-1.99
GEn 1200 mg/Day-2.15
GEn 2400 mg/Day-2.04
GEn 3600 mg/Day-2.71
PGB 300 mg/Day-1.83

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Change From Baseline in the Mean Night-time Worst Pain Intensity Score at EOMT Using LOCF Data

Night-time worst pain is defined as the partipant's assessment of their worst pain between going to bed at night and rising in the morning. Participants recorded night-time worst pain in the morning upon awakening using an 11-point PI-NRS (0=no pain, 10=pain as bad as you can imagine). Baseline and EOMT are as defined for the primary endpoint. Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with baseline value, BMI, grouped center as covariates was used. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-2.25
GEn 1200 mg/Day-2.24
GEn 2400 mg/Day-2.25
GEn 3600 mg/Day-3.00
PGB 300 mg/Day-1.86

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Change From Baseline in the Mean Sleep Interference Score at EOMT Using LOCF Data

Participants assessed sleep interference due to pain on a daily basis in the morning upon awakening using an 11-point NRS (0=pain does not interfere with sleep, 10=pain completely interferes with sleep). Baseline and EOMT are as defined for the primary endpoint. Change from baseline was calculated as the EOMT score minus the baseline score. An ANCOVA model with baseline value, BMI, grouped center as covariates was used. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionscores on a scale (Least Squares Mean)
Placebo-2.35
GEn 1200 mg/Day-2.54
GEn 2400 mg/Day-2.45
GEn 3600 mg/Day-3.01
PGB 300 mg/Day-2.24

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Change From Baseline in Quality of Life as Assessed by the 36-Item Short Form Health Survey (SF-36) at EOMT Using LOCF Data

The SF-36 is a general health-related quality of life instrument consisting of 36 items with various response options (Yes/No, 5- to 6-point Likert scale). Summary scores are calculated for 8 domains and 2 components (physical and mental); where scores range from 0 to 100 (higher scores = better quality of life). Analysis of this endpoint is based on the change from baseline (BL) (EOMT score minus the BL score) using an ANCOVA model with BL value, BMI, grouped center as covariates. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

,,,,
Interventionscores on a scale (Least Squares Mean)
SF-36 Physical Component Summary ScoreSF-36 Mental Component Summary Score
GEn 1200 mg/Day3.50.4
GEn 2400 mg/Day3.71.5
GEn 3600 mg/Day4.61.6
PGB 300 mg/Day3.70.7
Placebo3.12.5

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Number of Participants Who Are Responders on the Clinician Global Impression of Change (CGIC) Questionnaire at EOMT Using LOCF Data

"The CGIC is a single-item questionnaire designed to provide an overall assessment of treatment from the clinician's perspective since the start of the study. It is measured on a 7-point scale, where 1=very much improved and 7=very much worse. A participant is considered a responder if they have a response of very much improved or much improved. EOMT response is defined as the score recorded at the Week 13/Withdrawal visit." (NCT00643760)
Timeframe: EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionparticipants (Number)
Placebo39
GEn 1200 mg/Day20
GEn 2400 mg/Day22
GEn 3600 mg/Day50
PGB 300 mg/Day17

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Number of Participants Who Are Responders on the Patient Global Impression of Change (PGIC) Questionnaire at EOMT Using LOCF Data

"The PGIC is a single-item questionnaire designed to provide an overall assessment of treatment from the participant's perspective since the start of the study. It is measured on a 7-point scale, where 1=very much improved and 7=very much worse. A participant is considered a responder if they have a response of very much improved or much improved. EOMT response is defined as the score recorded at the Week 13/Withdrawal visit." (NCT00643760)
Timeframe: EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

Interventionparticipants (Number)
Placebo46
GEn 1200 mg/Day22
GEn 2400 mg/Day24
GEn 3600 mg/Day53
PGB 300 mg/Day62

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Time to Onset of Sustained Improvement in the 24-hour Average Pain Intensity Score

Sustained improvement in the 24-hour average pain intensity score is defined as at least 2 consecutive days on which the 24-hour average pain intensity score is >=2 points less than the mean 24-hour average pain intensity score at baseline. Time to onset is measured from baseline and was calculated as first day of event minus last day of baseline and is expressed in days. Baseline score is the calculated mean of the 24-hour average pain score for each participant during the last 7 days prior to randomization. (NCT00643760)
Timeframe: Any time post-baseline until date of last dose of study medication (up to Week 13)

Interventiondays (Median)
Placebo24
GEn 1200 mg/Day25
GEn 2400 mg/Day22
GEn 3600 mg/Day15
PGB 300 mg/Day29

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Change From Baseline in Emotional Functioning as Assessed by the Profile of Mood States-Brief Form (POMS-B) at EOMT Using LOCF Data

The POMS-B, an emotional functioning instrument, assesses mood, tension, and other psychological symptoms and consists of 30-items assessed on a 5-point scale (0=not at all to 4=extremely). 6 summary scores are calculated: Tension/Anxiety, Depression/Rejection, Anger/Hostility, Vigor/Activity, Fatigue/Inertia, and Confusion/Bewilderment; and range from 0-20 (higher scores = more negative mood state). Analysis of this endpoint is based on the change from baseline (BL) (EOMT score minus the BL score) using an ANCOVA model with BL value, BMI, grouped center as covariates. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

,,,,
Interventionscores on a scale (Least Squares Mean)
Tension/Anxiety Domain ScoreDepression/Rejection Domain ScoreAnger/Hostility Domain ScoreVigor/Activity Domain ScoreFatigue/Inertia Domain ScoreConfusion/Bewilderment Domain Score
GEn 1200 mg/Day-0.6-0.2-0.8-0.1-0.50.2
GEn 2400 mg/Day-0.7-0.6-0.50.1-1.1-0.1
GEn 3600 mg/Day-0.9-0.3-0.30.7-1.10.0
PGB 300 mg/Day-0.30.4-0.3-0.4-0.1-0.2
Placebo-1.0-0.5-0.50.6-0.8-0.3

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Change From Baseline in Pain Quality as Assessed by the Neuropathic Pain Scale (NPS) Summary Scores at EOMT Using LOCF Data

The NPS assesses pain qualities and consists of 11-items, 10 assessed on an 11-point NRS (0=no impact to 10=greatest impact); and 1 open-ended question not used in score calculation. 4 summary scores are calculated: NPS 10 (items 1-7, 9-11), NPS 8 (8 pain descriptor items), NPS Non-Allodynic (NA) (8 NA items), and NPS 4 (4 pain quality items); and range from 0 to 100 (0=no impact and 100=greatest impact). The analysis is based on the change from baseline (BL) (EOMT score minus the BL score) using an ANCOVA model with BL value, BMI, grouped center as covariates. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

,,,,
Interventionscores on a scale (Least Squares Mean)
NPS 10 ScoreNPS 8 ScoreNPS Non-Allodynic ScoreNPS 4 Score
GEn 1200 mg/Day-18.43-17.83-18.89-20.90
GEn 2400 mg/Day-22.24-21.84-22.86-25.15
GEn 3600 mg/Day-25.49-25.14-26.35-27.84
PGB 300 mg/Day-16.16-16.19-15.63-16.06
Placebo-18.92-18.73-19.37-20.54

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Change From Baseline in Pain Characteristics and Intensity as Assessed by the Short Form-McGill Pain Questionnaire (SF-MPQ) at EOMT Using LOCF Data

The SF-MPQ, a general pain instrument, assesses the characteristics and intensity of pain and consists of 15-items assessed on a 4-point scale (0=none, 1=mild, 2=moderate, and 3=severe). 3 summary scores are calculated: sensory score (sum of items 1-11, range 0-33), affective score (sum of items 12-15, range 0-12), total score (sum of items 1-15, range 0-45), where lower scores = lower pain/impact. Analysis is based on the change from baseline (BL) (EOMT score minus the BL score) using an ANCOVA model with BL value, BMI, grouped center as covariates. (NCT00643760)
Timeframe: Baseline and EOMT (representing the earliest date of Week 13 visit/withdrawal visit)

,,,,
Interventionscores on a scale (Least Squares Mean)
SF-MPQ Total ScoreSF-MPQ Sensory ScoreSF-MPQ Affective Score
GEn 1200 mg/Day-6.55-4.83-1.65
GEn 2400 mg/Day-6.75-5.31-1.45
GEn 3600 mg/Day-7.56-5.50-2.07
PGB 300 mg/Day-4.01-2.73-1.26
Placebo-5.85-4.25-1.63

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Change From Baseline in Severity of Pain and the Impact of Pain as Assessed by the Brief Pain Inventory (BPI) at EOMT Using LOCF Data

The BPI, a general pain instrument, assesses the severity and interference of pain; and consists of 6 items assessed on an 11-point NRS (0=no impact and 10=greatest impact). 2 summary scores are calculated: BPI Severity Score (average of first 4 items) and BPI Interference Score (average of 7 responses to item 6); where each summary score ranges from 0 to 10 (0=no impact and 10=greatest impact). Analysis of this endpoint is based on the change from baseline (BL) (EOMT score minus the BL score) using an ANCOVA model with BL value, BMI, grouped center as covariates. (NCT00643760)
Timeframe: Baseline and EOMT

,,,,
Interventionscores on a scale (Least Squares Mean)
Brief Pain Inventory Severity of PainBrief Pain Inventory Interference of Pain
GEn 1200 mg/Day-2.3-2.0
GEn 2400 mg/Day-2.4-2.1
GEn 3600 mg/Day-2.8-2.5
PGB 300 mg/Day-1.7-1.9
Placebo-2.1-2.0

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Secondary Outcome Measures Quality of Life in Essential Tremor (QUEST), Hamilton Anxiety Scale (HAM-A), Hotel Dieu-16 a Sleep Hygiene Questionnaire(HD-16), and Clinical Clobal Impression-Change Scale (CGI-C)

The Quality of Life in Essential Tremor Questionnaire (QUEST), Hamilton Anxiety scale (HAM-A) and Hotel Dieu-16 (HD-16) were scored as per published guidelines [7], [8] and [9]. The QUEST rates patient perception as influenced by tremor across 5 domains. A QUEST score will be between 0 and 120 with 0 = no essential tremor and 120 = severe essential tremor. The HAM-A rates the severity of anxiety symptomatology across 14 parameters. Scores of 14-17 = mild anxiety, 18-24 = moderate anxiety, and 25-30 = severe anxiety; The HD-16 rates insomnia-related quality of life across five domains. An HD-16 score of 73.1 - 248.5 = severe insomnia, 61-73.1 = mild insomnia, and 0 - 61 = good sleeper. For the scales, HAM-A, QUEST and HD-16, higher scores represent increased symptom severity or diminished quality of life. CGI-C was scored as follows: 1 = very much improved, 2=much improved, 3=mildly improved, 4=no change, 5=mildly worse, 6= much worse, and 7= very much worse. (NCT00646451)
Timeframe: baseline to 6 weeks

,
Interventionunits on a scale (Mean)
QUESTHAM-AHD-16CGI-C
Placebo-9.74.1-38.63.8
Pregabalin8.01.132.23.9

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Change in Tremor Rating Scale (TRS) Compared With Baseline.

"Change from baseline in the overall TRS score obtained at the final evaluation (end of study). The overall TRS score will be derived from the three TRS subscales. The minimum and maximum score for part A is 0-80, part B is 0-36, and part C is 0-28 giving a maximum score of 144. TRS part A rates the severity of resting, postural and action tremor in upper and lower extremities, face, tongue, voice, head and trunk. Part B rates the severity of upper extremity tremor while writing, drawing, and pouring liquid. Part C rates functional disability of tremor while speaking, eating, drinking, maintaining hygiene, dressing, and working. Higher scores represent increased symptom severity or diminished quality of life.~." (NCT00646451)
Timeframe: baseline to 6 weeks

,
Interventionunits on a scale (Mean)
TRS Part ATRS Part BTRS Part CTotal TRS
1-Pregabalin2.46.74.55.1
2-Placebo-0.23.6-1.50.3

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Subject Activity as Captured by the Actiwatch Score Device: Total Activity Score at End of Treatment

Total activity score: Day (8 am to 8 pm) at end of treatment. Accelerometer measured physical activity by monitoring degree and intensity of body motion. Data is reported as activity counts. Subject activity was collected hourly for the variables: peak, average, and total activity. Higher score indicates greater activity (no activity = 0; total possible score was not defined). (NCT00654940)
Timeframe: Week 0 to Week 2, Week 4 to Week 6 (Baseline to End of Treatment in Treatment Periods 1 and 2)

Interventionscores on scale (Least Squares Mean)
Pregabalin300000
Placebo270000

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Change From Baseline to Treatment Week 2 in Daily Pain Rating Scale

Daily Pain Rating Scale by treatment and sequence using an 11-point Likert scale: range 0 (no pain) to 10 (worst possible pain) over the past 24 hours. Self-assessment was performed daily on rising from bed (for the final time in the case of interrupted sleep). Average daily pain score: mean of the previous 7 days daily pain scores. Baseline was defined as the mean of the last 7 pre-treatment pain scores for each period. End of treatment was defined as the mean of the last 7 on treatment pain scores for each period. (NCT00654940)
Timeframe: Week 0 to Week 2, Week 4 to Week 6 (Baseline to Week 2 [End of Treatment] for each treatment period)

,,,
Interventionscores on scale (Mean)
BaselineTreatment Week 2Change from Baseline
Period 1: Placebo5.245.08-0.16
Period 1: Pregabalin6.035.40-0.63
Period 2: Placebo5.966.110.16
Period 2: Pregabalin5.314.38-0.93

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Neuropathic Pain Symptom Inventory (NPSI)

NPSI at end of treatment: 10-item self-administered questionnaire assessing 5 dimensions of pain (burning superficial spontaneous pain, pressing deep spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dysesthesia). Each item consists of a question about the specific qualities of pain and an 11-point numerical scale range: 0 (absence of pain) to 10 (maximum intensity imaginable), and 2 temporal items related to spontaneous and paroxysmal pain. Maximum total score possible = 100. (NCT00654940)
Timeframe: Week 0 to Week 2, Week 4 to Week 6 (Baseline to End of Treatment in Treatment Periods 1 and 2)

,
Interventionscores on scale (Mean)
Week 0 (Baseline: Treatment Period 1)Week 2 (End of Treatment: Treatment Period 1)Week 4 (Baseline: Treatment Period 2)Week 6 (End of Treatment: Treatment Period 2)
Placebo/Pregabalin5.254.915.273.00
Pregabalin/Placebo5.315.314.334.75

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Incidence of Chronic Post-thoracotomy Pain at 2 Months Postoperatively

Incidence of post-thoracotomy pain syndrome (persistent continuous or intermittent chest pain with resting pain score > 4 on a 10 point NRS scale) (NCT00663962)
Timeframe: 2 months postoperatively

Interventionparticipants (Number)
Pregabalin0
Placebo0

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Number of Subjects Responding to Treatment as Assessed by the Clinical Global Impression - Improvement Scale (CGI-I)

Clinical Global Impression - Improvement Scale (CGI-I): 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Improvement is defined as a score of 1 (very much improved), 2 (much improved), or 3 (minimally improved) on the scale. Higher score = more affected. Number of subjects responding to treatment at Week 6 with respect to dose level. CGI-I Responders = subjects who reported CGI-I scores of very much improved or much improved. (NCT00676403)
Timeframe: Week 6

,,,,,
Interventionparticipants (Number)
Week 6: Responders (n=21, 20, 22, 18, 23, 20)Week 6: Non-Responders
Placebo138
Pregabalin 100 mg157
Pregabalin 150 mg117
Pregabalin 300 mg176
Pregabalin 450 mg182
Pregabalin 50 mg128

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Medical Outcomes Study Short Form 36 (SF-36): Change From Baseline to Week 6

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role-physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health), 2 summary scores (physical component and mental component), and a self-evaluated change in health status. Subscale and summary scores range: 0-100. Higher subscale and summary scores = better health status. Recall period: month prior to the assessment. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Physical FunctioningRole-PhysicalBodily PainGeneral HealthVitalitySocial FunctioningRole-EmotionalMental HealthSummary Physical ScoreSummary Emotional Score
Placebo3.61.16.96.57.47.8-2.12.94.53.7
Pregabalin 100 mg2.47.512.94.09.94.87.83.66.76.7
Pregabalin 150 mg-0.47.716.97.518.54.41.07.68.28.2
Pregabalin 300 mg2.90.913.33.611.79.58.13.75.68.5
Pregabalin 450 mg3.69.618.15.913.915.612.710.79.713.5
Pregabalin 50 mg0.57.015.85.211.18.36.71.07.46.9

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Medical Outcomes Study Short Form 36 (SF-36); Number of Subjects With Self-Evaluated Change in Health Status Scores

"Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role-physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health), 2 summary scores (physical component and mental component), and a self-evaluated change in health status. Self-evaluated change in health status: 5 Likert-type response categories ranging from much worse now to much better now. Recall period: month prior to the assessment." (NCT00676403)
Timeframe: Baseline, Week 6

,,,,,
Interventionparticipants (Number)
Baseline: Much Worse than 1 Year AgoBaseline: Somewhat Worse than 1 Year AgoBaseline: About the Same as 1 Year AgoBaseline: Somewhat Better than 1 Year AgoBaseline: Much Better than 1 Year AgoWeek 6: Much Worse than 1 Year AgoWeek 6: Somewhat Worse than 1 Year AgoWeek 6: About the Same as 1 Year AgoWeek 6: Somewhat Better than 1 Year AgoWeek 6: Much Better than 1 Year Ago
Placebo041521121143
Pregabalin 100 mg131531021046
Pregabalin 150 mg241400041111
Pregabalin 300 mg311451231242
Pregabalin 450 mg231222011054
Pregabalin 50 mg36911031222

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Medical Outcomes Study - Sleep Scale (MOSS-SS): Somnolence Subscale; Observed Change From Baseline

MOS-SS: subject-rated instrument used to assess the key constructs of sleep over the past week; assesses sleep quantity and quality and is comprised 12 items yielding 7 subscale scores and 2 composite index scores. Sleep Somnolence Subscale score range: 0-100; higher score indicates less somnolence. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline,, Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 4Week 6
Placebo-7.4-13.9-14.0-11.7
Pregabalin 100 mg-9.8-11.1-11.8-14.8
Pregabalin 150 mg-14.3-18.8-16.2-21.7
Pregabalin 300 mg-11.2-11.3-16.9-13.4
Pregabalin 450 mg-10.7-12.6-12.6-13.9
Pregabalin 50 mg-13.8-18.2-20.4-26.3

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Medical Outcomes Study - Sleep Scale (MOSS-SS): Snoring Subscale; Observed Change From Baseline

MOS-SS: subject-rated instrument used to assess the key constructs of sleep; assesses sleep quantity and quality over the past week. Comprised of 12 items yielding 7 subscale scores and 2 composite index scores. Snoring Subscale score (1 item): range 0-100, lower score indicates less snoring. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 4Week 6
Placebo-2.4-1.5-3.2-2.1
Pregabalin 100 mg-8.6-11.4-4.0-6.6
Pregabalin 150 mg0.7-8.7-7.5-2.0
Pregabalin 300 mg-2.9-3.32.81.0
Pregabalin 450 mg-9.2-12.2-3.5-7.5
Pregabalin 50 mg5.2-0.84.42.5

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Medical Outcomes Study - Sleep Scale (MOSS-SS): Sleep Quantity Subscale; Observed Change From Baseline

MOS-SS: subject-rated instrument used to assess the key constructs of sleep over the past week; assesses sleep quantity and quality and is comprised 12 items yielding 7 subscale scores and 2 composite index scores. Sleep Quantity (1 item) subscale score range: 0-24 hours. Change from Baseline in number of hours slept. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline,, Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 4Week 6
Placebo0.40.50.60.6
Pregabalin 100 mg0.50.60.70.7
Pregabalin 150 mg0.91.21.41.3
Pregabalin 300 mg0.40.71.10.7
Pregabalin 450 mg0.71.11.11.2
Pregabalin 50 mg0.70.81.00.9

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Medical Outcomes Study - Sleep Scale (MOSS-SS): Sleep Disturbance Subscale; Observed Change From Baseline

MOS-SS: subject-rated instrument used to assess the key constructs of sleep quantity and quality over the past week; comprised of 12 items yielding 7 subscale scores and 2 composite index scores. Sleep Disturbance Subscale score (4 items): range 0-100; lower score indicates less disturbance. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 4Week 6
Placebo-9.0-15.7-22.0-19.3
Pregabalin 100 mg-21.1-23.0-28.3-25.3
Pregabalin 150 mg-23.0-26.1-32.4-33.4
Pregabalin 300 mg-17.7-35.3-34.2-31.4
Pregabalin 450 mg-26.3-32.1-37.4-40.2
Pregabalin 50 mg-18.2-25.1-18.5-29.2

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Medical Outcomes Study - Sleep Scale (MOSS-SS): Sleep Adequacy Subscale; Observed Change From Baseline

MOS-SS: subject-rated instrument used to assess the key constructs of sleep; assesses sleep quantity and quality and is comprised 12 items yielding 7 subscale scores and 2 composite index scores. Sleep Adequacy Subscale score range: 0-100; higher scores indicates greater sleep adequacy. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 4Week 6
Placebo5.215.615.616.8
Pregabalin 100 mg5.319.620.827.0
Pregabalin 150 mg13.721.924.726.8
Pregabalin 300 mg9.814.026.619.2
Pregabalin 450 mg16.129.534.631.1
Pregabalin 50 mg16.131.023.934.6

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Medical Outcomes Study - Sleep Scale (MOSS-SS): Optimal Sleep; Observed Cases Summarized by Week

MOS-SS: subject-rated instrument used to assess the key constructs of sleep over the past week; assesses sleep quantity and quality and is comprised 12 items yielding 7 subscale scores and 2 composite index scores. Optimal Sleep subscale is derived from sleep quantity average hours of sleep each night during the past week. Number of subjects with response: YES (Optimal) if sleep quantity was 7 or 8 hours of sleep per night. (NCT00676403)
Timeframe: Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionparticipants (Number)
Week 1Week 2Week 4Week 6
Placebo681112
Pregabalin 100 mg7111111
Pregabalin 150 mg991010
Pregabalin 300 mg612149
Pregabalin 450 mg11121113
Pregabalin 50 mg1061211

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Medical Outcomes Study - Sleep Scale (MOSS-SS): Awaken Short of Breath or With Headache Subscale; Observed Change From Baseline

MOS-SS: subject-rated instrument used to assess the key constructs of sleep over the past week ; comprised of 12 items yielding 7 subscale scores and 2 composite index scores. Awaken Short of Breath or with Headache subscale score range: 0-100; lower score indicates less difficulty. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 4Week 6
Placebo-7.3-9.1-9.9-7.4
Pregabalin 100 mg-5.3-8.8-8.9-4.9
Pregabalin 150 mg-9.2-12.1-9.9-11.5
Pregabalin 300 mg-8.6-8.2-9.1-3.0
Pregabalin 450 mg1.4-1.1-9.2-8.2
Pregabalin 50 mg-1.7-4.3-2.5-0.9

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Medical Outcomes Study - Sleep Scale (MOSS-SS): 9-Item Sleep Problems Index; Observed Change From Baseline

MOS-SS: subject-rated instrument used to assess the key constructs of sleep over the past week; assesses sleep quantity and quality and is comprised 12 items yielding 7 subscale scores and 2 composite index scores. Composite index scores are sleep problems Index I (6 items) and sleep problems Index II (9 items). 9-Item Sleep Problems Index range: 0-100; lower score indicates fewer sleep problems. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 4Week 6
Placebo-8.1-15.5-18.2-16.8
Pregabalin 100 mg-14.2-19.0-22.0-22.2
Pregabalin 150 mg-17.8-22.5-25.2-28.3
Pregabalin 300 mg-14.4-23.3-27.0-22.3
Pregabalin 450 mg-18.8-24.6-29.1-29.4
Pregabalin 50 mg-15.9-23.5-19.3-27.5

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Restless Leg Syndrome - Quality of Life Scale (RLS-QoL): Change From Baseline to Week 6

RLS QoL: subject-rated instrument used to assess the impact of RLS on quality of life and health status function (symptom severity, daily activity, social functioning, sleep, concentrating and decision making, traveling, sexual activity, and work) yielding a summary score ranging from 0-100. Higher scores reflect better quality of life. Recall period is the month prior to the assessment. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 6

Interventionscores on scales (Least Squares Mean)
Placebo15.0
Pregabalin 50 mg19.6
Pregabalin 100 mg22.4
Pregabalin 150 mg20.8
Pregabalin 300 mg15.9
Pregabalin 450 mg20.5

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Change From Baseline in Restless Leg Syndrome (RLS) International Restless Leg Group Symptom Severity Rating Scale (IRLS) Total Score at Week 6

IRLS: Subject-rated instrument to assess RLS symptom severity and impact on daily living; 10 items yielding 2 subscale scores and 1 global (total) score. Subscale scores: symptom severity (6 items) and impact on daily living (3 items), with item 5 (daytime somnolence due to RLS) loaded equally on both subscales. Global score: calculated from all 10 items. Subscale score ranges: symptom severity 0-24, impact of daily living 0-12; global score range: 0-40. Lower scores reflect lower severity and better quality of life. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 6

Interventionscores on scale (Least Squares Mean)
Placebo-7.73
Pregabalin 50 mg-11.83
Pregabalin 100 mg-11.76
Pregabalin 150 mg-16.02
Pregabalin 300 mg-12.89
Pregabalin 450 mg-16.26

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Medical Outcomes Study - Sleep Scale (MOSS-SS): 6-Item Sleep Problems Index; Observed Change From Baseline

MOS-SS: subject-rated instrument used to assess the key constructs of sleep over the past week; assesses sleep quantity and quality and is comprised 12 items yielding 7 subscale scores and 2 composite index scores. Sleep Problems Index I (6 items): composite index score range 0-100; lower score indicates fewer sleep problems. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 4, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 4Week 6
Placebo-9.2-14.8-17.2-15.5
Pregabalin 100 mg-10.4-15.7-19.6-21.1
Pregabalin 150 mg-14.9-20.3-23.3-26.1
Pregabalin 300 mg-13.9-20.1-24.4-18.8
Pregabalin 450 mg-16.2-24.1-28.9-27.6
Pregabalin 50 mg-12.5-22.0-17.9-25.0

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Subjective Sleep Questionnaire: Total Wake Time After Sleep Onset Subscale; Observed Change From Baseline

Subjective Sleep Questionnaire (SSQ): subject-rated instrument used to assess sleep behavior; measures sleep quantity and quality. Comprised of 5 items yielding 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, and quality of sleep. Total wake time after sleep onset subscale (in minutes): numerical rating completed by the subject 30 minutes after waking; recall period is the night before. Reduction = improvement. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 3, Week 4, Week 5, Week 6

,,,,,
Interventionminutes (Least Squares Mean)
Week 1Week 2Week 3Week 4Week 5Week 6
Placebo-23.8-29.5-34.3-30.4-28.7-34.2
Pregabalin 100 mg/Day-28.5-36.5-32.0-36.5-30.7-34.2
Pregabalin 150 mg/Day-29.0-41.9-45.9-46.0-59.6-54.0
Pregabalin 300 mg/Day-32.2-39.8-42.3-43.6-42.5-41.1
Pregabalin 50 mg/Day-37.9-47.0-51.4-50.7-55.4-57.0
Pregablin 450 mg/Day-32.6-46.3-42.9-46.8-55.1-55.5

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Subjective Sleep Questionnaire: Quality of Sleep Subscale; Observed Change From Baseline

Subjective Sleep Questionnaire (SSQ): subject-rated instrument used to assess sleep behavior; measures sleep quantity and quality. Comprised of 5 items yielding 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, and quality of sleep. Quality of sleep subscale: visual analog scale ranging from 1 (very poor) to 100 (excellent) completed by the subject 30 minutes after waking; recall period is the night before. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 3, Week 4, Week 5, Week 6

,,,,,
Interventionscores on scale (Least Squares Mean)
Week 1Week 2Week 3Week 4Week 5Week 6
Placebo5.011.313.813.214.713.9
Pregabalin 100 mg15.218.718.622.019.923.5
Pregabalin 150 mg15.924.226.828.230.930.5
Pregabalin 300 mg11.523.423.624.226.023.1
Pregabalin 450 mg17.224.025.423.831.128.8
Pregabalin 50 mg18.823.323.023.828.727.6

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Subjective Sleep Questionnaire: Number of Awakenings Subscale; Observed Change From Baseline

Subjective Sleep Questionnaire (SSQ): subject-rated instrument used to assess sleep behavior; measures sleep quantity and quality. Comprised of 5 items yielding 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, and quality of sleep. Number of awakenings subscale: numerical rating completed by the subject 30 minutes after waking; recall period is the night before. Fewer awakenings reflect better quality of sleep. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 3, Week 4, Week 5, Week 6

,,,,,
Interventionawakenings (Least Squares Mean)
Week 1Week 2Week 3Week 4Week 5Week 6
Placebo-0.5-0.7-0.7-0.9-0.8-1.0
Pregabalin 100 mg-1.0-1.3-1.0-1.2-1.0-1.1
Pregabalin 150 mg-1.2-1.3-1.3-1.5-1.6-1.5
Pregabalin 300 mg-0.7-1.3-1.2-1.1-1.2-1.0
Pregabalin 450 mg-0.8-1.1-1.4-1.2-1.5-1.2
Pregabalin 50 mg-0.9-1.0-1.0-1.1-1.3-1.0

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Subjective Sleep Questionnaire: Hours of Sleep Subscale; Observed Change From Baseline

Subjective Sleep Questionnaire (SSQ): subject-rated instrument used to assess sleep behavior; measures sleep quantity and quality. Comprised of 5 items yielding 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, and quality of sleep. Hours of sleep subscale reflects change in hours of sleep from baseline. Numerical rating completed by the subject 30 minutes after waking; recall period is the night before. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 3, Week 4, Week 5, Week 6

,,,,,
Interventionhours (Least Squares Mean)
Week 1Week 2Week 3Week 4Week 5Week 6
Placebo0.230.360.360.270.370.19
Pregabalin 100 mg0.290.520.530.460.430.42
Pregabalin 150 mg0.550.810.890.930.970.95
Pregabalin 300 mg0.450.760.720.650.610.44
Pregabalin 450 mg0.721.071.321.031.431.11
Pregabalin 50 mg0.570.650.610.811.030.84

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Subjective Sleep Questionnaire (SSQ): Latency Subscale; Observed Change From Baseline

Subjective Sleep Questionnaire (SSQ): subject-rated instrument used to assess sleep behavior; measures sleep quantity and quality. Comprised of 5 items yielding 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, and quality of sleep. Latency subscale (time to fall asleep [in minutes]): numerical rating completed by the subject 30 minutes after waking; recall period is the night before. Lower score reflects greater ease (shorter time) in falling asleep. Change from baseline = score at observation minus score at baseline. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 3, Week 4, Week 5, Week 6

,,,,,
Interventionminutes (Least Squares Mean)
Week 1Week 2Week 3Week 4Week 5Week 6
Placebo-9.8-8.9-14.6-13.6-15.9-12.4
Pregabalin 100 mg-13.2-17.2-13.1-20.4-17.6-19.5
Pregabalin 150 mg-10.4-16.3-17.8-18.2-24.0-25.1
Pregabalin 300 mg-9.1-13.0-17.8-18.2-13.4-10.1
Pregabalin 450 mg-20.2-34.3-33.7-37.1-36.1-34.9
Pregabalin 50 mg-16.3-20.7-18.9-20.4-26.8-25.4

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Number of Subjects With Categorical Scores on the Clinical Global Impression - Severity Scale (CGI-S)

CGI-S Scale: 7-point clinician rated scale to assess severity of subject's current illness state; range: 1 (normal - not ill at all) to 7 (among the most extremely ill patients). Higher score = more affected. (NCT00676403)
Timeframe: Baseline, Week 1, Week 2, Week 4, Week 6, Last Observation Carried Forward (LOCF)

,,,,,
Interventionparticipants (Number)
Baseline: Normal, Not at All IllBaseline: Borderline, Mentally IllBaseline: Mildly IllBaseline: Moderately IllBaseline: Markedly IllBaseline: Severely IllBaseline: Among the Most Extremely IllWeek 1: Normal, Not at All IllWeek 1: Borderline, Mentally IllWeek 1: Mildly IllWeek 1: Moderately IllWeek 1: Markedly IllWeek 1: Severely IllWeek 1: Among the Most Extremely IllWeek 2: Normal, Not at All IllWeek 2: Borderline, Mentally IllWeek 2: Mildly IllWeek 2: Moderately IllWeek 2: Markedly IllWeek 2: Severely IllWeek 2: Among the Most Extremely IllWeek 4: Normal, Not at All IllWeek 4: Borderline, Mentally IllWeek 4: Mildly IllWeek 4: Moderately IllWeek 4: Markedly IllWeek 4: Severely IllWeek 4: Among the Most Extremely IllWeek 6: Normal, Not at All IllWeek 6: Borderline, Mentally IllWeek 6: Mildly IllWeek 6: Moderately IllWeek 6: Markedly IllWeek 6: Severely IllWeek 6: Among the Most Extremely IllLOCF: NormalLOCF: Borderline, Mentally IllLOCF: Mildly IllLOCF: Moderately IllLOCF: Markedly IllLOCF: Severely IllLOCF: Among the Most Extremely Ill
Placebo0016781104104400310333114843201311222013122221
Pregabalin 100 mg0028760115553012954102211611044752004475210
Pregabalin 150 mg004557111871202376010525511044730004495000
Pregabalin 300 mg0021138004563503645310464522064714106471420
Pregabalin 450 mg0026510032782107283000854210075611007671110
Pregabalin 50 mg001983111683202455310227622033652103366220

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Change From Baseline on the Numeric Rating Scale (NRS)

The primary efficacy variable was the change from baseline on the NRS. The primary time point was the average pain score during the last data-analysis-interval of week 8. The baseline score was the average of the NRS scores across the last 7 days of the screening period (just prior to the start of the placebo run-in). The primary efficacy variable was the pain severity score measured on an 11 point NRS on which 0=no pain and 10=worst possible pain. (NCT00696787)
Timeframe: Baseline and 8 weeks

Interventionunits on scale (Mean)
Placebo-1.98
DVS SR-1.60
Pregabalin-1.70

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Change From Baseline on the Numeric Rating Scale (NRS) in the Treatment of Pain Associated With Fibromyalgia in Adult Female Outpatients

The efficacy variable was the change from baseline on the numeric rating scale (NRS). The time point was the average pain score during the last data-analysis-interval of week 8, data analysis interval. The baseline score was the average of the NRS scores across the last 7 days of the screening period (just prior to the start of the placebo run-in). The efficacy variable was the pain severity score measured on an 11 point NRS on which 0=no pain and 10=worst possible pain. (NCT00696787)
Timeframe: Baseline and 8 weeks

Interventionunits on scale (Mean)
Placebo-2.00
DVS SR-1.64
Pregabalin-1.45

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Comparison of 75 mg of Pregabalin vs Placebo, Numerical Change From Baseline in Hot Flash Score at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).

Hot flash activity will be analyzed in a number of ways. For the this analysis, the numerical change-from-baseline to hot flash score after week 6 of treatment will be compared between the lower dose treatment arm and the placebo arm. A hot flash score is computed for each patient by assigning points (1=mild, 2=moderate, 3=severe, 4=very severe) to each hot flash based on patient-reported severity, adding the points for each day, and averaging across each week of the study. Abbreviations for the analysis population description: Eligible patients (EPs). Evaluable for primary (EFP). Off-study for adverse event (AE). Do not have 6 weeks of data (NODATA). (NCT00702949)
Timeframe: Baseline, after week 6 of treatment

Interventionunits on a scale (Median)
Pregabalin75-9.7
Placebo-6.1

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Comparison of 75 mg of Pregabalin vs Placebo. Percent Change From Baseline in Hot Flash Score at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).

Hot flash activity will be analyzed in a number of ways. For the this analysis, the percent change-from-baseline to hot flash score after week 6 of treatment will be compared between the lower dose treatment arm and the placebo arm. A hot flash score is computed for each patient by assigning points (1=mild, 2=moderate, 3=severe, 4=very severe) to each hot flash based on patient-reported severity, adding the points for each day, and averaging across each week of the study. Abbreviations for the analysis population description: Eligible patients (EPs). Evaluable for primary (EFP). Off-study for adverse event (AE). Do not have 6 weeks of data (NODATA). (NCT00702949)
Timeframe: Baseline, after week 6 of treatment

Interventionpercent change (Median)
Pregabalin75-64.9
Placebo-50.1

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Numerical Change From Baseline in Hot Flash Frequency at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).

The analysis of daily average hot flash frequency will follow as specified for the primary analysis. Abbreviations for the analysis population description: Eligible patients (EPs). Evaluable for primary (EFP). Off-study for adverse event (AE). Do not have 6 weeks of data (NODATA). (NCT00702949)
Timeframe: Baseline, after week 6 of treatment

InterventionHot flashes per day (Median)
Pregabalin75-4.6
Pregabalin150-4.9
Placebo-2.9

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Numerical Change From Baseline in Hot Flash Score at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).

Hot flash activity will be analyzed in a number of ways. For the primary analysis, the numerical change-from-baseline to hot flash score after week 6 of treatment will be compared between the highest dose treatment arm and the placebo arm. A hot flash score is computed for each patient by assigning points (1=mild, 2=moderate, 3=severe, 4=very severe) to each hot flash based on patient-reported severity, adding the points for each day, and averaging across each week of the study. Abbreviations for the analysis population description: Eligible patients (EPs). Evaluable for primary (EFP). Off-study for adverse event (AE). Do not have 6 weeks of data (NODATA). (NCT00702949)
Timeframe: Baseline, after week 6 of treatment

Interventionunits on a scale (Median)
Pregabalin150-9.6
Placebo-6.1

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Percent Change From Baseline in Hot Flash Frequency at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).

The analysis of daily average hot flash frequency will follow as specified for the primary analysis. Abbreviations for the analysis population description: Eligible patients (EPs). Evaluable for primary (EFP). Off-study for adverse event (AE). Do not have 6 weeks of data (NODATA). (NCT00702949)
Timeframe: Baseline, after week 6 of treatment

Interventionpercent change (Median)
Pregabalin75-58.5
Pregabalin150-61.1
Placebo-36.3

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Percent Change From Baseline in Hot Flash Score at Treatment Week 6 (Positive Numbers to Represent Increases and Negative Numbers to Represent Decreases).

Hot flash activity will be analyzed in a number of ways. For the primary analysis, the percent change-from-baseline to hot flash score after week 6 of treatment will be compared between the highest dose treatment arm and the placebo arm. A hot flash score is computed for each patient by assigning points (1=mild, 2=moderate, 3=severe, 4=very severe) to each hot flash based on patient-reported severity, adding the points for each day, and averaging across each week of the study. Abbreviations for the analysis population description: Eligible patients (EPs). Evaluable for primary (EFP). Off-study for adverse event (AE). Do not have 6 weeks of data (NODATA). (NCT00702949)
Timeframe: Baseline, after week 6 of treatment

Interventionpercent change (Median)
Pregabalin150-71.0
Placebo-50.1

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Toxicity Data for the Individual Study Arms From the Symptom Experience Diary .

A descriptive report of the toxicities experienced by participants will be measured with a Symptom Experience Diary. Participants will complete this questionnaire weekly. This patient diary contains several questions related to potential side effects and side benefits of pregabalin measured on a numeric analogue scale (based on 0-10 scale with 10 being worst toxicity, providing numbers representing the worst median changes from baseline minus Maximum (Week 1-6) Symptom Experience Diary Distributions). (NCT00702949)
Timeframe: Baseline, 6 weeks during treatment.

,,
Interventionunits on a scale (Median)
Concern about weight gainConcern about sleepinessConcern about dizzinessConcern about coordinationConcern about concentrationConcern about blurred/double vision
Placebo1.01.000.00.00.0
Pregabalin1502.02.02.01.01.01.0
Pregabalin751.01.01.00.01.00.0

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Effect of Pregabalin (Two Doses) Versus Placebo

Region of Interest (ROI) analysis of contrast of doses (high and low) of pregabalin vs placebo on brain activity at rest and during emotional stimuli using fMRI and clinical scales. (NCT00706836)
Timeframe: Week 1, 2, 3 (Cross-over Design)

Intervention% signal change L amygdala + anticipn (Mean)
Pregabalin Low Dose (Crossover)0.6
Pregabalin High Dose (Crossover)-0.1
Placebo (Crossover)0.6

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NRS Pain Score AUC (NRS*hr) - 1st 24 Hours

Numerical Response scale NRS(0-10) Pain scores were collected every 4 hours after the initial dose and the Area Under the Curve (AUC) calculated. Calculated for the 1st 24 hours after initial dose (0-24hr). AUC measured in NRS pain score points per hour (NRS*hr). Larger AUC values indicate higher levels of reported pain. (NCT00729690)
Timeframe: 24 hours

InterventionArea (NRS*hr) (Mean)
1 Multi-Dose Pregabalin70.4
2 Single-dose Pregabalin59.6
3 Placebo73.4

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NRS Pain Score AUC (NRS*hr) - 1st 12 Hours

Numerical Response scale NRS(0-10) Pain scores were collected every 4 hours after the initial dose and the Area Under the Curve (AUC) calculated. Calculated for the 1st 12 hours after initial dose (0-12hr). AUC measured in NRS pain score points per hour (NRS*hr). Larger AUC values indicate higher levels of reported pain. (NCT00729690)
Timeframe: 12 hours Post dose

InterventionArea (NRS*hr) (Mean)
1 Multi-Dose Pregabalin30.1
2 Single-dose Pregabalin22.7
3 Placebo27.7

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Active Knee Flexion

The degree of active knee flexion (ROM) tolerated by the patient will be assessed at days 1 and 2 post-surgery. Active flexion is the unassisted moment of the joint by the subject. On postoperative (PostOp) day 2 (NCT00729690)
Timeframe: PostOp day 2

InterventionDegrees (Mean)
1 Multi-Dose Pregabalin78.1
2 Single-dose Pregabalin80.5
3 Placebo80.5

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Passive Knee Flexion

Passive flexion is the moment of the joint with the assistance of a clinician (The clinician or therapist physically hold and moves the knee through it's range of motion). (NCT00729690)
Timeframe: PostOp day 2

InterventionDegrees (Mean)
1 Multi-Dose Pregabalin86.5
2 Single-dose Pregabalin88.2
3 Placebo87.1

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Glutamine/Creatine (Gln/Cr) and Glutamate/Creatine (Glu/Cr) Ratios Measured by Proton Magnetic Resonance Spectroscopy (1H-MRS)

Single voxel spectra obtained from the anterior and posterior right insula at rest to compare ratios for Gln/Cr, Glu/Cr, and combined Glutamate + Glutamine (Glx/Cr) for pregabalin and placebo. Gln, Glu, Glx calculated as ratios to the internal standard creatine. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

,
Interventionratio (Mean)
Glu/Cr ratio posterior insula - pre-doseGlu/Cr ratio posterior insula - post-doseGln/Cr ratio posterior insula - pre-doseGln/Cr ratio posterior insula - post-doseGlx/Cr ratio posterior insula - pre-doseGlx/Cr ratio posterior insula - post-doseGlu/Cr ratio anterior insula - pre-doseGlu/Cr ratio anterior insula - post-doseGln/Cr ratio anterior insula - pre-doseGln/Cr ratio anterior insula - post-doseGlx/Cr ratio anterior insula - pre-doseGlx/Cr ratio anterior insula - post-dose
Placebo1.132531.171290.526350.515531.658941.687471.237881.185240.478820.475411.716711.66124
Pregabalin1.17511.10460.53110.48571.706241.59031.227311.23930.531440.52901.758881.7684

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Short-Form McGill Pain Questionnaire (SF-MPQ): Sensory Total Score Including Outliers

SF-MPQ was completed to assess pain over the past week and to assess present pain and consists of 15 pain descriptors: sensory dimension of pain experience (sum of items 1 to 11) and affective dimension (sum of items 12 to 15). Each descriptor was ranked by participant on a 4-point intensity scale (0=none to 3=severe) and totaled in each subclass (sensory range 0 to 33; affective range 0 to 12); higher scores indicated higher pain/impact. Baseline and Post-dose data for Period 1 and Period 2 summarized as LS Mean. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin8.6641
Placebo9.4722

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Short-Form McGill Pain Questionnaire (SF-MPQ): Overall Score Including Outliers

SF-MPQ was completed to assess pain over the past week and to assess present pain and consists of 15 pain descriptors: sensory dimension of pain experience (sum of items 1 to 11) and affective dimension (sum of items 12 to 15). Each descriptor was ranked by the participant on a 4-point intensity scale (0=none to 3=severe) and totaled in each subclass (sensory range 0 to 33; affective range 0 to 12). Total (overall) score was sum of items 1 to 15, range 0 to 45; higher scores indicated higher pain/impact. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin10.0862
Placebo11.2774

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Short-Form McGill Pain Questionnaire (SF-MPQ): Affective Total Score Including Outliers

SF-MPQ was completed to assess pain over the past week and to assess present pain and consists of 15 pain descriptors: sensory dimension of pain experience (sum of items 1 to 11) and affective dimension (sum of items 12 to 15). Each descriptor was ranked by participant on a 4-point intensity scale (0=none to 3=severe) and totaled in each subclass (sensory range 0 to 33; affective range 0 to 12); higher scores indicated higher pain/impact. Baseline and Post-dose data for Period 1 and Period 2 summarized as LS Mean. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin1.4100
Placebo1.8173

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Pain Catastrophizing Scale (PCS) Including Outliers

"PCS is a participant rated 13-item instrument to measure the presence and severity of catastrophizing. Scored 0 (not at all) to 4 (all the time) to statements such as When I'm in pain…I worry all the time about whether the pain will end. All 13 statements start with When I'm in pain…. Total score ranged from 0 to 52; higher scores reflected greater impairment. Baseline and Post-dose data for Period 1 and Period 2 summarized as LS Mean. Any observation with a studentized residual >3 or <-3 was considered an outlier." (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin11.4050
Placebo12.0041

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Hospital Anxiety and Depression Scale (HADS): Depression Total Score Including Outliers

A participant rated questionnaire with 2 subscales. HADS-A assessed state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assessed state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicated greater severity of anxiety and depression symptoms. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin3.1750
Placebo3.8705

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Hospital Anxiety and Depression Scale (HADS): Anxiety Total Score Including Outliers

A participant rated questionnaire with 2 subscales. HADS-A assessed state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assessed state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicated greater severity of anxiety and depression symptoms. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin4.3896
Placebo5.1558

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Daily Pain Diary Numeric Rating Scale (NRS) Item From the Modified Brief Pain Inventory (mBPI) for Assessment of Clinical Pain: Individual Daily Pain Score Including Outliers

The daily pain diary consisted of the mBPI item regarding participant-rated average of pain over the past 24 hours. Scored on an 11-point numeric scale ranging from 0 (no pain) to 10 (pain as bad as you can imagine). The individual daily pain score was defined as the final score recorded in the last pain diary of the treatment period 24 hours prior to fMRI scanning visit. Baseline and Post-dose data for Period 1 and Period 2 summarized as LS Mean. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin4.3110
Placebo5.0527

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Daily Pain Diary Numeric Rating Scale (NRS) Item From the Modified Brief Pain Inventory (mBPI) for Assessment of Clinical Pain: 7 Day Average Pain Score Including Outliers

The daily pain diary consisted of the mBPI item regarding participant-rated average of pain over the past 24 hours. Scored on an 11-point numeric scale ranging from 0 (no pain) to 10 (pain as bad as you can imagine). The 7 day average pain score was defined as the mean daily pain NRS value for the last 7 days prior to fMRI scanning visit. Baseline and Post-dose data for Period 1 and Period 2 summarized as LS Mean. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin4.1014
Placebo4.7038

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Daily Pain Diary Numeric Rating Scale (NRS) Item From the Modified Brief Pain Inventory (mBPI) for Assessment of Clinical Pain: 3 Day Average Pain Score Including Outliers

The daily pain diary consisted of the mBPI item regarding participant-rated average of pain over the past 24 hours. Scored on an 11-point numeric scale ranging from 0 (no pain) to 10 (pain as bad as you can imagine). The 3 day average pain score was defined as the mean daily pain NRS value for the last 3 days prior to fMRI scanning visit. Baseline and Post-dose data for Period 1 and Period 2 summarized as LS Mean. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

Interventionscores on a scale (Least Squares Mean)
Pregabalin4.3467
Placebo4.7745

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Voxel-wise Blood Oxygen Level Dependent (BOLD) Using Functional Magnetic Resonance Imaging (fMRI) of Brain Activation Signals in Response to Blunt Pressure Pain: Percent Change in BOLD Activations Including Outliers

BOLD fMRI imaging modality to assess brain activation signals across the whole brain in defined Region of Interest (ROI) brain regions in response to blunt pressure pain; acquired during resting state (no evoked pain) and during evoked pain (thumb pressure device with non-painful pressure, 2 kilograms [kg] pressure/equal stimulus conditions, and high pain pressure/up to 10 kg). Estimated as magnitude (percent change) of the betas representing brain signal activation associated with pressure induced pain. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

,
Interventionpercent change (Least Squares Mean)
Anterior CingulateBrodman Area (BA) 22BA40Left (L)_Anterior Insula (anIns)L_AmygdalaL_CerebellumL_DLPFCL_Mid InsulaL_Mid Temporal PoleL_Orbito FrontPeriaqueductal gray (PAG)Posterior Insula (pIns)L_Posterior CingulateL_PrecuneusL_PutamenL_Secondary Somatosensory Area (S2)Right (R)_DLPFCR_Anterior InsulaR_AmygdalaR_BA23_baseR_Inferior Parietal Lobule (IPL)_baseR_Insula_baseR_Mid InsulaR_Mid Front_DLPFCR_Mid Temporal PoleR_Orbito FrontL_PAGR_Posterior InsulaPosterior InsulaR_Posterior CingulateR_PrecuneusR_Precuneus_baseSuperior TemporalR_PremotorR_PutamenR_Primary Somatosensory Area (S1)R_ThalamusPrecuneus
Placebo-0.0240.0290.0260.0440.0410.0210.0230.100-0.044-0.1360.0160.002-0.083-0.0840.0370.1110.1010.0020.076-0.017-0.0150.0340.0280.083-0.036-0.0560.011-0.024-0.002-0.093-0.070-0.0380.026-0.0220.0320.0370.018-0.078
Pregabalin0.008-0.050-0.0470.073-0.040-0.056-0.002-0.011-0.0240.0330.0140.001-0.132-0.0570.081-0.016-0.0040.080-0.0770.005-0.042-0.0100.015-0.011-0.048-0.0460.0340.0630.050-0.175-0.070-0.040-0.039-0.0220.088-0.0480.010-0.066

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Voxel-wise Blood Oxygen Level Dependent (BOLD) Using Functional Magnetic Resonance Imaging (fMRI) of Brain Activation Signals in Response to a Control Visual (Checkerboard) Stimuli

BOLD fMRI imaging modality to assess brain activation signals across the whole brain in defined ROI brain regions in response to checkerboard visual stimuli (flashing at 8 hertz [Hz]). Reported as percent change between the pre-dose (baseline) and post-dose values. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

,
Interventionpercent change in BOLD signal (Mean)
Right (R) anterior mid insula cortexLeft (L) mid insula cortexR inferior parietal lobule, Brodman area 40L inferior parietal lobule, Brodman area 40Right primary somatosensory cortexLeft primary somatosensory cortexLeft supplementary motor area
Placebo-0.050.000.050.02-0.010.060.30
Pregabalin0.320.230.270.280.140.210.02

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Sphygmomanometry Evoked Allodynia in Relation to the Blood Pressure (BP) Value at Which Allodynia Was Evoked

"BP cuff evoked allodynia assessed based on participant response to the following question When I take your blood pressure, tell me if the cuff's pressure is painful. A standard BP cuff was inflated at approximately 10 millimeters of mercury (mm Hg) per second up to 180 mm Hg or to point when participant experienced pain; performed 3 times on each arm whether or not pain was reported. If no pain elicited at 180 mm Hg, it was recorded that no sphygmomanometry-evoked allodynia occurred. If pain was reported, value (in mm Hg) at which pain first occured was recorded for each of the assessments." (NCT00760474)
Timeframe: Day 58

Interventionmm Hg (Mean)
Mean Left Arm BP Cuff PressureMean Right Arm BP Cuff Pressure
All Study Treatment: Pregabalin, Placebo107.92129.31

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Resting State Brain Activity (Connectivity Analysis) Assessed by Temporal Correlations in Low Frequency fMRI BOLD Signals Across Pain Processing Regions

Resting state brain activity assessed for correlation of brain seed region (pIns, anIns) to ROI connectivity at baseline (pre-dose) and post-dose (pre minus post) measured using z-score (mean of 0, standard deviation [SD] of 1); range approximately -3 to +3. Positive (+) z-scores reflect greater connectivity (+correlation between seed region and ROI). Negative (-) z-scores reflect -connectivity (anti-correlation between seed region and ROI). ROIs include PCC and IPL from within the default mode network (DMN). DMN is a constellation of regions in which connectivity is augmented in fibromyalgia. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

,
Interventionz-score (Mean)
pIns_Posterior cingulate (PCC) pre-dosepIns_PCC post-dosepIns_primary motor region (M1) pre-dosepIns_M1 post-dosepIns_cerebellum pre-dosepIns_cerebellum post-dosepIns_Left (L) IPL 3a pre-dosepIns_L IPL 3a post-dosepIns_L IPL 3b pre-dosepIns_L IPL 3b post-dosepIns_Right (R) IPL 3b pre-dosepIns_R IPL 3b post-dosepIns_cuneus pre-dosepIns_cuneus post-doseanIns_L IPL pre-doseanIns_L IPL post-doseanIns_R IPL pre-doseanIns_R IPL post-doseanIns_S2 pre-doseanIns_S2 post-doseanIns_cuneus pre-doseanIns_cuneus post-dose
Placebo1.54051.24091.32671.37711.44391.0704-0.9296-1.29771.73900.99300.74200.90811.85432.33241.99822.67971.78482.61941.67992.42251.75501.1899
Pregabalin1.16472.15043.14863.26050.39840.02130.2025-0.37920.65521.56140.83100.97662.13633.04102.14042.64932.69561.28631.65923.14662.51031.8042

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Pain at the Bilateral Epicondyle Tender Points Assessed Using American College of Rheumatology (ACR) Classification Criteria

Participant rated severity of pain upon application of 4 kilograms (kg) pressure via dolorimeter at the bilateral epicondyle tender points (2 tender points, 2 centimeters distal to the epicondyles) described in the American College of Rheumatology (ACR) classification criteria and scored on a 0 (no pain) to 10 (worst possible pain) rating scale. Each arm was to be assessed for any pain (one point on each arm) with the application of pressure. (NCT00760474)
Timeframe: Day 58

Interventionscores on a scale (Mean)
Pain Severity Left EpicondylePain Severity Right Epicondyle
All Study Treatment: Pregabalin, Placebo6.255.72

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Gracely Box Scales for Pain Unpleasantness (GBSunp) Including Outliers

Minimum and maximum pain unpleasantness acquired during resting state (no evoked pain) and during evoked pain (thumb pressure device with non-painful pressure, 2 kg pressure/equal stimulus conditions, and high pain pressure/up to 10 kg) measured during fMRI and scored from 0 (neutral) to 20 (very intolerable). Baseline and Post-dose data for Period 1 and Period 2 summarized as LS Mean. Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline/Pre-dose (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

,
Interventionscores on a scale (Least Squares Mean)
Minimum pain unpleasantnessMaximum pain unpleasantness
Placebo3.425811.2742
Pregabalin3.392410.1576

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Gracely Box Scales for Pain Intensity (GBSint) Including Outliers

Minimum and maximum pain intensity acquired during resting state (no evoked pain) and during evoked pain (thumb pressure device with non-painful pressure, 2 kg pressure/equal stimulus conditions, and high pain pressure/up to 10 kg) measured during fMRI and scored from 0 (no pain sensation) to 20 (extremely intense). Baseline and Post-dose data for Period 1 and Period 2 summarized as Least Squares Mean (LS Mean). Any observation with a studentized residual >3 or <-3 was considered an outlier. (NCT00760474)
Timeframe: Baseline (Day 8, Day 37), Post-dose (Period 1/Day 22, Period 2/Day 51)

,
Interventionscores on a scale (Least Squares Mean)
Minimum pain intensityMaximum pain intensity
Placebo3.472515.6117
Pregabalin4.118414.5701

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Time to Response

Time to response=first visit achieving a 30% reduction of weekly mean 24-hour APS score. Data were recorded daily (preferably at bedtime) on an 11-point Likert scale, an ordinal scale ranging from 0 (no pain) to 10 (worst possible pain). The number of days at which 50% of the participants at risk had at least 30% response was reported. (NCT00785577)
Timeframe: Baseline through 5 weeks

Interventiontime (days) (Number)
Placebo36
Pregabalin30
LY545694 21 mg30
LY545694 49 mg30
LY545694 105 mg30

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Percentage of Participants With Reported Hypoglycemic Events

"Percentage of participants who reported hypoglycemic (lower than normal level of blood glucose) episodes was summarized as other non-serious adverse events (AEs) from the Investigations system organ class (preferred term = hypoglycemia). A listing of AEs is located in the Reported Adverse Event module." (NCT00785577)
Timeframe: Baseline through 5 weeks

Interventionpercentage of participants (Number)
Placebo1.12
LY545694 21 mg0.00
LY545694 49 mg0.00
LY545694 105 mg2.13

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Patient Global Impression of Improvement (PGI-I) Score at 5 Weeks

PGI-I measured the participant's perception of improvement at the time of assessment compared with the start of treatment. The score ranged from 1 (very much better) to 7 (very much worse). LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Week 5

Interventionunits on a scale (Least Squares Mean)
Placebo2.58
Pregabalin2.28
LY545694 21 mg2.37
LY545694 49 mg2.63
LY545694 105 mg2.41

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Number of Participants With Neurological Treatment Emergent Adverse Events (TEAEs)

"The total number of TEAEs (serious and non-serious) that first occurred or worsened during the treatment period) from the Nervous system disorders system organ class was summarized. A listing of serious AEs (SAEs) and other non-serious AEs is located in the Reported Adverse Event module." (NCT00785577)
Timeframe: Baseline through 5 weeks

Interventionparticipants (Number)
Placebo17
Pregabalin22
LY545694 21 mg16
LY545694 49 mg24
LY545694 105 mg23

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Number of Participants With 30% Reduction in Weekly Mean 24-hour Average Pain Severity (APS) Score

This scale measured the number of participants with a 30% reduction in weekly mean 24-hour APS score from baseline to endpoint. Data were recorded daily (preferably at bedtime) on an 11-point Likert scale, an ordinal scale ranging from 0 (no pain) to 10 (worst possible pain). (NCT00785577)
Timeframe: Baseline through 5 weeks

Interventionparticipants (Number)
Placebo38
LY545694 21 mg18
LY545694 49 mg21
LY545694 105 mg21

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Change From Baseline of European Quality of Life Scale - 5 Dimensions (EQ-5D) at 5 Weeks: United States Population Based Index Score

The EQ-5D was a generic, multidimensional, health-related, quality-of-life instrument. The profile allowed participants to rate their health state in 5 health domains: mobility, self-care, usual activities, pain/discomfort, and mood. A single score between 1 and 3 was generated for each domain. For each participant, the outcome rating on the 5 domains was mapped to a single index through an algorithm. The index ranged between 0 and 1, with the higher score indicating a better health state perceived by the participant. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo0.09
Pregabalin0.09
LY545694 21 mg0.11
LY545694 49 mg0.05
LY545694 105 mg0.07

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Change From Baseline in Weekly Mean Worst Daily Pain Severity Score at 5 Weeks

This scale measured worst pain APS scores. Data were recorded daily (preferably at bedtime) on an 11-point Likert scale, an ordinal scale ranging from 0 (no pain) to 10 (worst possible pain). LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-2.27
Pregabalin-2.87
LY545694 21 mg-2.57
LY545694 49 mg-2.77
LY545694 105 mg-2.67

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Change From Baseline in Weekly Mean Night Pain Severity Score at 5 Weeks

This scale measured night pain APS scores. Data were recorded daily on an 11-point Likert scale, an ordinal scale ranging from 0 (no pain) to 10 (worst possible pain). LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-2.31
Pregabalin-2.75
LY545694 21 mg-2.25
LY545694 49 mg-2.54
LY545694 105 mg-2.21

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Change From Baseline in Weekly Mean 24-hour Average Pain Severity (APS) Score at 5 Weeks

This scale measured 24-hour APS scores. Data were recorded daily (preferably at bedtime) on an 11-point Likert scale, an ordinal scale ranging from 0 (no pain) to 10 (worst possible pain). Least Squares (LS) Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-2.08
LY545694 21 mg-2.22
LY545694 49 mg-2.45
LY545694 105 mg-2.42

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Change From Baseline in Vital Signs: Pulse Rate at 5 Weeks

Pulse rate was measured in beats per minute (bpm). LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionbeats per minute (bpm) (Least Squares Mean)
Placebo-1.06
Pregabalin-3.60
LY545694 21 mg0.87
LY545694 49 mg1.47
LY545694 105 mg1.66

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Pharmacokinetic (PK) Parameter: Clearance of LY545694 (CLp) and Compound 645838 (CLm)

Clearance is the volume of plasma cleared of study drug LY545694 (CLp) and metabolite compound 645838 (CLm) per unit time. The original PK/pharmacodynamic (PD) relationship outcome measure analysis was not conducted; therefore, only PK data were reported. (NCT00785577)
Timeframe: Baseline through 5 weeks

InterventionLiters per hour (L/hr) (Geometric Mean)
LY545694 Clearance (CLp)79.1
Compound 645838 (CLm)39.8

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Change From Baseline in Short-form McGill Pain Questionnaire (SF-MPQ) Sensory Subscale Score at 5 Weeks

SF-MPQ consisted of 11 sensory descriptors describing pain that were rated on an intensity scale as 0 = none, 1 = mild, 2 = moderate or 3 = severe. Three pain scores were derived from the sum of the intensity rank values of the words chosen for sensory descriptors. The SF-MPQ sensory subscale was the sum of the 11 scores (ranged from 0 to 33, with 33 being the worst). LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-8.20
Pregabalin-8.60
LY545694 21 mg-8.93
LY545694 49 mg-8.95
LY545694 105 mg-7.89

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Change From Baseline in Short Form-36 (SF-36) Health Survey Bodily Pain Score at 5 Weeks

The SF-36 Health Status Survey was a generic, health-related scale assessing participants' quality of life on 8 domains (physical functioning, social functioning, bodily pain, vitality, mental health, role-physical, role-emotional and general health) and 2 summary scores (mental component summary [MCS] and physical component summary [PCS]). MCS and PCS scores=0-100 (higher scores indicate better health status). Domain scores: general health=5-25; physical functioning=10-30; role-physical=4-8; role-emotional=3-6; social functioning=2-10; bodily pain=2-11; vitality=4-24; mental health=5-30. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo7.51
Pregabalin10.70
LY545694 21 mg8.16
LY545694 49 mg5.78
LY545694 105 mg6.33

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Change From Baseline in Sheehan Disability Scale (SDS) Global Impairment Score at 5 Weeks

The SDS was completed by the participant and was used to assess the effect of the participant's symptoms on work/social/family life. Total scores ranged from 0 to 30 with higher values indicating greater disruption in the participant's work/social/family life. LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-2.96
Pregabalin-2.58
LY545694 21 mg-2.63
LY545694 49 mg-1.97
LY545694 105 mg-3.04

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Change From Baseline in Overall Total Quick Inventory of Depressive Symptomatology (QIDS) Score

The QIDS was a 16-item patient-rated measure of depressive symptomatology. Each item had a 0 to 3 point scale. The total score ranged from 0 to 27 with higher scores indicative of greater severity. QIDS was calculated by summing the scores from the 9 symptom domains of the Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV) major depressive disorder criteria: depressed mood, loss of interest or pleasure, concentration/decision making, self outlook, suicidal ideation, energy/fatigability, sleep, weight/appetite change, and psychomotor changes. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-1.96
Pregabalin-1.49
LY545694 21 mg-0.69
LY545694 49 mg-0.46
LY545694 105 mg0.20

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Change From Baseline in Neuropathy-Specific Quality of Life (NeuroQoL) Questionnaire Score at 5 Weeks

NeuroQoL had 29 items: 13 assessed specific somatic experiences (pain, lost/reduced feeling, and diffuse sensory-motor symptoms); 14 assessed specific functional, social, and emotional experiences (restrictions in daily living activities, disruptions in social relationships, and emotional distress); 2 items assessed QoL and overall satisfaction. Items reported on a 5-point scale (never/not at all to all of the time/very much). Higher mean scores=more severe symptoms/greater disruption in functioning. First 27 items also associate with 3-point bothersome/importance scale (1=none to 3=very). (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-0.56
Pregabalin-0.49
LY545694 21 mg-0.58
LY545694 49 mg-0.59
LY545694 105 mg-0.31

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Change From Baseline in Clinical Global Impression of Severity (CGI-S) Score at 5 Weeks

CGI-S measured severity of illness at the time of assessment compared with start of treatment. Scores ranged from 1 (normal, not at all ill) to 7 (among the most extremely ill patients). LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-1.07
Pregabalin-1.02
LY545694 21 mg-1.28
LY545694 49 mg-1.07
LY545694 105 mg-1.03

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Change From Baseline in Average Brief Pain Inventory - Interference (BPI-I) Subscale Score at 5 Weeks

Average BPI-I measured self-reported degree of pain interference on function. Interference scores: 0 (does not interfere) to 10 (completely interferes) on each question assessing interference of pain in past 24 hours for general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life. Average interference = average of non-missing scores of individual interference items. LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo-2.73
Pregabalin-2.81
LY545694 21 mg-2.31
LY545694 49 mg-2.73
LY545694 105 mg-2.30

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Change From Baseline in Assessment of Sleep Questionnaire (ASQ) Total Score at 5 Weeks

ASQ consisted of 21 items (including a single item to assess overall sleep quality) and 3 subscales: Sleep Onset and Maintenance (items 1-3, 5-6, 9, 11); Sleep Experience (items 4, 7, 8, 10, 12); and Awakening Experience (items 13-20). Each item was scored on a 5-point Likert scale, ranging from 0 (no sleep at all) to 5 (a lot of sleep). Each subscale was calculated as the mean of the individual items comprising the subscale. A total ASQ score was calculated as the mean of the subscale scores; higher scores represent better sleep. (NCT00785577)
Timeframe: Baseline, 5 weeks

Interventionunits on a scale (Least Squares Mean)
Placebo0.76
Pregabalin0.88
LY545694 21 mg0.67
LY545694 49 mg0.51
LY545694 105 mg0.55

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Number of Participants With Suicidal Behaviors and Ideations

"The Columbia Suicide Severity Rating Scale (C-SSRS) captured occurrence, severity, and frequency of suicide-related thoughts and behaviors. Number of participants with suicidal behaviors and ideations were provided. Suicidal behavior = a yes answer to any 1 of 5 suicidal behavior questions: preparatory acts or behavior, aborted attempt, interrupted attempt, actual attempt, and completed suicide. Suicidal ideation = a yes answer to any 1 of 5 suicidal ideation questions, which included the wish to be dead and 4 different categories of active suicidal ideation." (NCT00785577)
Timeframe: Baseline through week 5

,,,,
Interventionparticipants (Number)
Suicidal behaviorsSuicidal ideations
LY545694 105 mg01
LY545694 21 mg01
LY545694 49 mg00
Placebo01
Pregabalin00

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Number of Participants With Serious Treatment Emergent Abnormal High or Low Laboratory Values

"The number of participants by treatment group who had abnormal high or low laboratory values was reported by the investigator and summarized as serious adverse events (SAEs) from the Investigations system organ class during the treatment phase of the study. A listing of SAEs is located in the Reported Adverse Event module." (NCT00785577)
Timeframe: Baseline through 5 weeks

,,,,
Interventionparticipants (Number)
Alanine aminotransferase (ALT) abnormalAspartate aminotransferase (AST) abnormal
LY545694 105 mg11
LY545694 21 mg00
LY545694 49 mg00
Placebo00
Pregabalin00

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Number of Participants With Electrocardiogram Change in Heart Rate Using Bazett's (QTcB) and Fridericia's (QTcF) Formulas

The number of participants having QTcF and QTcB change ≥ 30 msec was summarized. (NCT00785577)
Timeframe: Baseline through 5 weeks

,,,,
Interventionparticipants (Number)
QTcB ≥30 msecQTcF ≥30 msec
LY545694 105 mg11
LY545694 21 mg21
LY545694 49 mg10
Placebo43
Pregabalin00

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Number of Participants Who Discontinued Due to Adverse Events (AEs) During the Therapy (Double-blind) Phase and 1-Week Washout (Follow-up) Phase

Participant discontinuation in the study due to serious and other non-serious AEs was measured during both the therapy (double-blind) phase and 1-week washout (follow-up) phase. A listing of serious and other non-serious AEs is located in the Reported Adverse Event module. (NCT00785577)
Timeframe: Baseline through 6 weeks

,,,,
Interventionparticipants (Number)
Therapy (Double-blind) Phase1-Week Washout (Follow-up) Phase
LY545694 105 mg171
LY545694 21 mg140
LY545694 49 mg101
Placebo50
Pregabalin70

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Number of Participants Reporting Blurry or Hazy Vision Using the Subjective Vision Inventory (SVI) Question 1 (Q1) at 5 Weeks

This scale first asked if the participant was experiencing hazy or blurry vision or if he/she had difficulty focusing. If the answer was yes, follow-up questions rated the degree to which the issue impaired his/her ability to do work or to read. (NCT00785577)
Timeframe: Week 5

,,,,
Interventionparticipants (Number)
YESNO
LY545694 105 mg426
LY545694 21 mg323
LY545694 49 mg332
Placebo871
Pregabalin829

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Change From Baseline in Vital Signs: Systolic Blood Pressure and Diastolic Blood Pressure at 5 Weeks

Participants' systolic blood pressure and diastolic blood pressure were measured in millimeters of mercury (mmHg). LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

,,,,
Interventionmillimeters of mercury (mmHg) (Least Squares Mean)
Systolic Blood Pressure (mmHg)Diastolic Blood Pressure (mmHg)
LY545694 105 mg0.080.77
LY545694 21 mg0.22-0.07
LY545694 49 mg-0.241.88
Placebo-1.82-0.87
Pregabalin-3.18-3.60

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Change From Baseline in Brief Pain Inventory - Severity (BPI-S) Subscale Score at 5 Weeks

BPI-S measured self-reported severity of pain. Severity scores: 0 (no pain) to 10 (severe pain) on each question assessing worst pain, least pain, and average pain in past 24 hours, and current pain. LS Means were adjusted for baseline, investigator, treatment, visit, a treatment-by-visit interaction, and a baseline-by-visit interaction. (NCT00785577)
Timeframe: Baseline, 5 weeks

,,,,
Interventionunits on a scale (Least Squares Mean)
BPI-S Worst PainBPI-S Least PainBPI-S Average PainBPI-S Current Pain
LY545694 105 mg-3.13-1.54-2.25-2.51
LY545694 21 mg-3.49-1.99-2.79-2.66
LY545694 49 mg-2.94-2.09-2.50-2.98
Placebo-2.57-1.76-2.08-2.44
Pregabalin-3.54-2.44-2.92-3.06

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Change From Baseline in Limb Pain-VAS at Week 12

100 mm line (VAS) marked by participant. Intensity of pain range (over past week): 0 mm = no pain to 100 mm = worst possible pain. Change = observation mean minus baseline mean. (NCT00806026)
Timeframe: Baseline, Week 12

Interventionmm (Least Squares Mean)
Pregabalin 300 mg-3.20
Pramipexole 0.25 mg-2.64
Pramipexole 0.5 mg-2.75
Placebo-2.20

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Work Productivity and Activity Impairment Questionnaire: Specific Health Problem (WPAI-SHP) at Week 12

WPAI: 6 question participant rated questionnaire to determine degree to which SHP affected work productivity while at work and outside of work. Four scores are derived: percentage of absenteeism and presenteeism (reduced productivity while at work), overall work impairment score combining absenteeism and presenteeism, percentage of impairment in activities performed outside of work. Score range: 0 (not affected/no impairment) to 10 (completely affected/impaired). WPAI outcomes expressed as impairment percentages with higher numbers indicating greater impairment and less productivity. (NCT00806026)
Timeframe: Week 12

,,,
InterventionPercentage of impairment (Mean)
Overall work (n= 10, 7, 11, 10)Activity (n= 18, 22, 25, 20)Work time missed (n= 10, 7, 11, 10)
Placebo14.6023.001.50
Pramipexole 0.25 mg5.7020.900.00
Pramipexole 0.5 mg9.1022.800.00
Pregabalin 300 mg6.0012.200.00

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Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 12

MOS-SS: Participant rated instrument to assess sleep quantity, quality; comprised of 12 items yielding 7 subscale scores: sleep disturbance, snoring, awakening short of breath/headache, sleep adequacy, somnolence, sleep quantity, optimal sleep, 2 composite index scores: sleep problems Index I, II. Sleep adequacy data was reported at week 12 and not for first 12 weeks (average). Subscale scores range: 0-100; exception quantity of sleep (range 0-24 hours). With exception of sleep quantity and sleep adequacy, higher scores reflect poorer sleep outcomes. (NCT00806026)
Timeframe: Week 12

,,,
InterventionUnits on a Scale (Mean)
Sleep disturbance (n = 175, 169, 178, 171)Snoring (n = 172, 169, 178, 170)Awakening short of breath (n = 175, 169, 178, 171)Sleep adequacy (n = 128, 120, 133, 125 )Somnolence (n = 175, 169, 178, 171)Sleep quantity (n = 175, 169, 178, 171)Sleep problem index I (n = 175, 169, 178, 171)Sleep problem index II (n = 175, 169, 178, 171)
Placebo38.6024.609.6050.0026.006.5035.0036.30
Pramipexole 0.25 mg39.3025.8012.3054.8027.606.5035.3036.60
Pramipexole 0.5 mg34.4025.8013.8055.2025.506.6033.4034.10
Pregabalin 300 mg30.5029.0010.5061.3023.906.8029.4030.70

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Medical Outcomes Study-Short Form 36 (SF-36) at Week 12

"SF-36 is a standardized survey evaluating 8 aspects of functional health and well being (physical and social functioning, physical and emotional role limitations, bodily pain, general health, vitality, mental health); 2 summary scores (physical and mental component); and self evaluated change in health status (summary of health status). The score for subscale scores and 2 summary score is an average of the individual question scores, which are scaled 0-100 (100=highest level of functioning). Summary of health status is a 5-point Likert scale ranging from 0=much worse now to 4=much better now. Higher subscale and summary score reflect better health status." (NCT00806026)
Timeframe: Week 12

,,,
InterventionUnits on a Scale (Mean)
Physical functioningRole physicalBodily painGeneral healthVitalitySocial functioningRole emotionalMental healthSummary physical scoreSummary mental scoreSummary of health status
Placebo83.0081.5065.5072.8059.3086.8087.0078.7075.7078.003.10
Pramipexole 0.25 mg81.9079.6065.2069.8059.0084.5083.9074.6074.2075.503.10
Pramipexole 0.5 mg82.4079.1069.0070.5059.8084.0084.6076.1075.3076.103.20
Pregabalin 300 mg83.7081.2073.3073.6062.4087.2085.1077.4078.0078.003.10

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Subjective Sleep Questionnaire (SSQ): Subjective Waking After Sleep Onset (WASO)

SSQ: Participant-rated instrument used to assess previous night's sleep profile. It is used to measure sleep quantity and quality and is comprised of 5 items yielding 5 subscale scores: latency (1 item), hours of sleep (1 item), number of awakenings (1 item), total WASO (1 item), quality of sleep (1 item). WASO is time spent awake from sleep onset to final awakening. Total WASO subscale (in minutes): numerical rating completed by the participant 30 minutes after waking; recall period is the night before. Total WASO subscale score ranges from 0-1440 minutes. Lower value indicates better sleep. (NCT00806026)
Timeframe: Baseline

Interventionminutes (Mean)
Pregabalin 300 mg90.60
Pramipexole 0.25 mg100.20
Pramipexole 0.5 mg83.90
Placebo79.50

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Subjective Sleep Questionnaire (SSQ): Quality of Sleep Subscale Score at Week 12

SSQ: Participant-rated instrument used to assess previous night's sleep profile. It is used to measure sleep quantity and quality and is comprised of 5 items yielding 5 subscale scores: latency (1 item), hours of sleep (1 item), number of awakenings (1 item), total WASO (1 item), quality of sleep (1 item). Quality of sleep subscale: numerical rating completed by the participant 30 minutes after waking; recall period is the night before. Quality of sleep subscale score ranges from 0-100. Higher score indicates better quality of sleep. (NCT00806026)
Timeframe: Week 12

InterventionUnits on a scale (Mean)
Pregabalin 300 mg66.50
Pramipexole 0.25 mg57.40
Pramipexole 0.5 mg60.20
Placebo57.70

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Subjective Sleep Questionnaire (SSQ): Number of Awakenings Subscale Score at Week 12

SSQ: Participant-rated instrument used to assess previous night's sleep profile. It is used to measure sleep quantity and quality and is comprised of 5 items yielding 5 subscale scores: latency (1 item), hours of sleep (1 item), number of awakenings (1 item), total WASO (1 item), quality of sleep (1 item). Number of awakenings subscale: numerical rating completed by the participant 30 minutes after waking; recall period is the night before. Number of awakenings subscale score ranges from 0-30. Lower value indicates better sleep. (NCT00806026)
Timeframe: Week 12

Interventionawakenings (Mean)
Pregabalin 300 mg1.10
Pramipexole 0.25 mg1.70
Pramipexole 0.5 mg1.50
Placebo1.80

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Subjective Sleep Questionnaire (SSQ): Latency Subscale Score at Week 12

SSQ: Participant-rated instrument used to assess previous night's sleep profile. It is used to measure sleep quantity and quality and is comprised of 5 items yielding 5 subscale scores: latency (1 item), hours of sleep (1 item), number of awakenings (1 item), total WASO (1 item), quality of sleep (1 item). Latency subscale (in minutes): numerical rating completed by the participant 30 minutes after waking; recall period is the night before. Latency subscale score ranges from 0-840 minutes. Lower value indicates better sleep. (NCT00806026)
Timeframe: Week 12

Interventionminutes (Mean)
Pregabalin 300 mg41.60
Pramipexole 0.25 mg43.10
Pramipexole 0.5 mg35.90
Placebo47.70

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Subjective Sleep Questionnaire (SSQ): Hours of Sleep Subscale Score at Week 12

SSQ: Participant-rated instrument used to assess previous night's sleep profile. It is used to measure sleep quantity and quality and is comprised of 5 items yielding 5 subscale scores: latency (1 item), hours of sleep (1 item), number of awakenings (1 item), total WASO (1 item), quality of sleep (1 item). Hours of sleep subscale: numerical rating completed by the participant 30 minutes after waking; recall period is the night before. Hours of sleep subscale score ranges from 0-16 hours. Higher value indicates better sleep. (NCT00806026)
Timeframe: Week 12

Interventionhours (Mean)
Pregabalin 300 mg7.00
Pramipexole 0.25 mg6.70
Pramipexole 0.5 mg6.80
Placebo6.70

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Severity of Augmentation Symptoms at Week 12

ASRS measures severity of augmentation and consist of three items to be completed by clinician. Clinician would score participants' answers by comparing post-baseline evaluations to those at baseline. ASRS total score range: 0-24, with higher score indicating more severe augmentation. (NCT00806026)
Timeframe: Week 12

InterventionUnits on a Scale (Mean)
Pregabalin 300 mg0.90
Pramipexole 0.25 mg1.60
Pramipexole 0.5 mg1.30
Placebo1.40

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RLS-Next Day Impact (RLS-NDI)

The RLS-NDI is a participant-rated instrument designed to assess daytime performance as related to RLS and the participant's previous night's sleep. The instrument consists of 14 items that encompass 5 domains: tiredness; emotional functioning; social functioning; cognitive functioning; and activities of daily living. There is also 1 global item assessing overall well -being. Each item is scored on a 0-10 numeric rating scale. Total score is the sum of scores from question 1 to 14. The total score ranges from 0 to 140 where higher scores indicate a more severe impact. (NCT00806026)
Timeframe: Baseline

InterventionUnits on a Scale (Mean)
Pregabalin 300 mg49.30
Pramipexole 0.25 mg51.90
Pramipexole 0.5 mg58.40
Placebo50.00

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Restless Legs Syndrome-Quality of Life Scale (RLS-QoL) at Week 12

RLS QoL: Participant rated instrument used to assess the impact of RLS on quality of life and health status function (symptom severity, daily activity, social functioning, sleep, concentrating and decision making, traveling, sexual activity, and work) yielding a summary score ranging from 0-100. Higher scores reflect better quality of life. (NCT00806026)
Timeframe: Week 12

InterventionUnits on Scale (Mean)
Pregabalin 300 mg77.75
Pramipexole 0.25 mg73.33
Pramipexole 0.5 mg75.48
Placebo73.23

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Restless Legs Syndrome (RLS) Symptom Severity

International Restless Legs Syndrome Study Group Rating Scale (IRLS) is psychometrically and clinically valid and reliable clinician-administered instrument used to assess the severity of RLS. It assesses RLS symptom severity and impact on daily living and is comprised of 10 items, scored on 0 to 4 scale, where lower score indicates lower symptom severity/impact on living. Two subscale scores are symptom severity (6 items) ranging from 0-24 (lower score indicates lower symptom severity) and impact on daily living (3 items) ranging from 0-12 (lower score indicates lower impact on living). Item 3 is unrelated to the other items. The global score is calculated from all 10 items, range from 0 to 40, where lower scores reflect lower severity and better quality of life. (NCT00806026)
Timeframe: Baseline

InterventionUnits on a Scale (Mean)
Pregabalin 300 mg22.30
Pramipexole 0.25 mg22.40
Pramipexole 0.5 mg22.10
Placebo22.40

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Percentage of Participants With Augmentation

Augmentation was worsening of RLS symptoms, attributable to a specific long-term therapeutic intervention for RLS. Percentage of participants with augmentation was evaluated by centralized evaluation board using a set of assessment criteria for potential augmentation which included structured interview for diagnosis of augmentation during RLS treatment (SIDA-RLS), augmentation severity rating scale (ASRS), clinical judgment. ASRS measures severity of augmentation and consist of three items to be completed by clinician. Clinician would score participants' answers by comparing post-baseline evaluations to those at baseline. ASRS total score range: 0-24, with higher score indicating more severe augmentation. (NCT00806026)
Timeframe: Baseline up to Week 52

InterventionPercentage of participants (Number)
Pregabalin 300 mg1.70
Pramipexole 0.25 mg6.60
Pramipexole 0.5 mg9.00

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Percentage of Participants Responding to Treatment at Week 12

"CGI-I: 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Improvement is defined as a score of 1 (very much improved), 2 (much improved), or 3 (minimally improved) on the scale. Higher score = more affected. Responders were defined as participants who report CGI-I score of very much improved or much improved." (NCT00806026)
Timeframe: Week 12

InterventionPercentage of participants (Number)
Pregabalin 300 mg71.40
Pramipexole 0.25 mg51.20
Pramipexole 0.5 mg62.70
Placebo46.80

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Number of Participants With Medical Outcomes Study-Sleep Scale (MOS-SS)- Optimal Sleep at Week 12

MOS-SS: Participant rated instrument to assess sleep quantity, quality; comprised of 12 items yielding 7 subscale scores: sleep disturbance, snoring, awakening short of breath/ headache, sleep adequacy, somnolence, sleep quantity, optimal sleep, 2 composite index scores: sleep problems Index I, II. Optimal sleep subscale scores range: 0-1; Optimal sleep = 1 if 'Average hours sleep' = 7 or 8, is 0 if 'Average hours sleep' is non-missing and less than 7, and is missing if 'Average hours sleep' is missing. Higher scores reflect better sleep outcomes. (NCT00806026)
Timeframe: Week 12

InterventionParticipants (Number)
Pregabalin 300 mg84
Pramipexole 0.25 mg64
Pramipexole 0.5 mg77
Placebo68

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Limb Pain-Visual Analog Scale (Limb Pain-VAS)

100 millimeter (mm) line (Visual Analog Scale) marked by participant. Intensity of pain range (over past week): 0 mm = no pain to 100 mm = worst possible pain. (NCT00806026)
Timeframe: Baseline

Interventionmm (Mean)
Pregabalin 300 mg4.20
Pramipexole 0.25 mg4.30
Pramipexole 0.5 mg4.00
Placebo4.10

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Clinical Global Impressions-Severity (CGI-S) at Week 12

CGI-S: 7-point clinician rated scale to assess severity of participant's current illness state; range: 1 (normal-not ill at all) to 7 (among the most extremely ill participants). Higher score = more affected. (NCT00806026)
Timeframe: Week 12

InterventionUnits on a Scale (Mean)
Pregabalin 300 mg2.90
Pramipexole 0.25 mg3.50
Pramipexole 0.5 mg3.10
Placebo3.70

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Change From Baseline in the RLS Symptom Severity at Week 12

IRLS is psychometrically and clinically valid and reliable clinician-administered instrument used to assess the severity of RLS. It assesses RLS symptom severity and impact on daily living and is comprised of 10 items, scored on 0 to 4 scale, where lower score indicates lower symptom severity/impact on living. Two subscale scores are symptom severity (6 items) ranging from 0-24 (lower score indicates lower symptom severity) and impact on daily living (3 items) ranging from 0-12 (lower score indicates lower impact on living). Item 3 is unrelated to the other items. The global score is calculated from all 10 items, range from 0 to 40, where lower scores reflect lower severity and better quality of life. (NCT00806026)
Timeframe: Baseline, Week 12

InterventionUnits on a Scale (Least Squares Mean)
Pregabalin 300 mg-11.80
Pramipexole 0.25 mg-7.90
Pramipexole 0.5 mg-10.50
Placebo-7.30

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Change From Baseline in SSQ: Subjective WASO at Week 12

SSQ: Participant-rated instrument used to assess previous night's sleep profile. It is used to measure sleep quantity and quality and is comprised of 5 items yielding 5 subscale scores: latency (1 item), hours of sleep (1 item), number of awakenings (1 item), total WASO (1 item), quality of sleep (1 item). WASO is time spent awake from sleep onset to final awakening. Total WASO subscale (in minutes): numerical rating completed by the participant 30 minutes after waking; recall period is the night before. Total WASO subscale score ranges from 0-1440 minutes. Lower value indicates better sleep. (NCT00806026)
Timeframe: Baseline, Week 12

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg-49.86
Pramipexole 0.25 mg-33.69
Pramipexole 0.5 mg-37.18
Placebo-32.61

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Change From Baseline in RLS-NDI at Week 12

The RLS-NDI is a participant-rated instrument designed to assess daytime performance as related to RLS and the participant's previous night's sleep. The instrument consists of 14 items that encompass 5 domains: tiredness; emotional functioning; social functioning; cognitive functioning; and activities of daily living. There is also 1 global item assessing overall well -being. Each item is scored on a 0-10 numeric rating scale. Total score is the sum of scores from question 1 to 14. The total score ranges from 0 to 140 where higher scores indicate a more severe impact. (NCT00806026)
Timeframe: Baseline, Week 12

InterventionUnits on a Scale (Least Squares Mean)
Pregabalin 300 mg-8.10
Pramipexole 0.25 mg-4.30
Pramipexole 0.5 mg-14.50
Placebo-6.60

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Snoring at Endpoint

"MOS: patient rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Snoring subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score means worse symptoms.~Change = mean scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

InterventionUnits on a scale (Mean)
Pregabalin1.9

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Somnolence at Endpoint

"MOS: patient rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Somnolence subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score means worse symptoms.~Change = mean scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

InterventionUnits on a scale (Mean)
Pregabalin7.2

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Change From Baseline in Pain Visual Analog Scale (Pain VAS) Score at Endpoint

"The pain VAS is a horizontal line; 100 mm in length, self-administered by the patient to rate pain from 0 (no pain) to 100 (worst possible pain). The score indicates the pain intensity during the past 1 week before a visit.~Change = mean scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

Interventionmm (Mean)
Pregabalin-13.1

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) - Subscale Score at Endpoint

"FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment.~Change = mean FIQ scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

InterventionUnits on a scale (Mean)
Physical FunctioningFeel GoodWork MissedDifficulty WorkingPainFatigueMorning TirednessStiffnessAnoxiounessDepression
Pregabalin-0.2-0.4-0.5-0.7-1.0-0.3-0.6-0.7-0.3-0.2

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Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

Any untoward medical occurrence in a participant who received study drug was considered an adverse event (AE), without regard to possibility of causal relationship. Treatment-emergent adverse events: those which occurred or worsened after baseline. An AE resulting in any of the following outcomes, was considered to be a serious adverse event: death; lifethreatening; initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect. (NCT00830128)
Timeframe: Up to 53 weeks

InterventionParticipants (Number)
All-causality adverse events (AEs)All-causality SAEs
Pregabalin1023

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Medical Outcomes Study (MOS) Sleep Scale - Optimal Sleep at Endpoint

MOS-Sleep is a patient-rated questionnaire to assess sleep quality and quantity. Optimal sleep component is derived from Sleep Quantity average hours of sleep each night during the past 4 weeks. Number of participants with response = YES if sleep quantity is 7 or 8 hours per night or response = NO if sleep quantity is < 7 hours per night. (NCT00830128)
Timeframe: Week 52 or Study Discontinuation

InterventionPaticipants (Number)
YesNo
Pregabalin2680

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) - Total Scores at Endpoint

"FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment.~Change = mean FIQ scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

InterventionUnits on a scale (Mean)
Pregabalin-4.9

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Awaken Short of Breath or With a Headache at Endpoint

"MOS: patient rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Awaken Short of Breath or With a Headache subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score means worse symptoms.~Change = mean scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

InterventionUnits on a scale (Mean)
Pregabalin-3.0

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Overall Sleep Problems Index at Endpoint

"MOS: patient rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Overall Sleep Problems Index rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score means worse symptoms.~Change = mean scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

InterventionUnits on a scale (Mean)
Pregabalin-3.7

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Quantity of Sleep at Endpoint

"MOS: patient rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Quantity of Sleep subscales rated 0 to 24 (number of hours slept). A higher score means greater quantity of sleep.~Change = mean scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

Interventionhours (Mean)
Pregabalin0.3

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Sleep Adequacy at Endpoint

"MOS: patient rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Sleep Adequacy subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score means greater sleep adequacy.~Change = mean scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

InterventionUnits on a scale (Mean)
Pregabalin4.2

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Sleep Disturbance at Endpoint

"MOS: patient rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Sleep Disturbance subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score means greater sleep disturbance.~Change = mean scores at observation minus mean scores at baseline." (NCT00830128)
Timeframe: Baseline, Week 52 or Study Discontinuation

InterventionUnits on a scale (Mean)
Pregabalin-9.6

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Tiredness

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.94
Pregabalin-1.43

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Depression

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.51
Pregabalin-0.55

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Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- General Health Perception

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role limitations-physical, bodily pain, general health perceptions, vitality, social functioning, role limitations-emotional, and mental health. Subscale scores range: 0-100. Higher subscale scores = better health status. Change from baseline = score at observation minus score at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo2.83
Pregabalin4.66

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Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Bodily Pain

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role limitations-physical, bodily pain, general health perceptions, vitality, social functioning, role limitations-emotional, and mental health. Subscale scores range: 0-100. Higher subscale scores = better health status. Change from baseline = score at observation minus score at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo9.50
Pregabalin11.65

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Change From Baseline for Numerical Rating Scale (NRS) Pain Scores at Endpoint-LOCF (Last Observation Carried Forward) Relative to Baseline

Change from baseline in mean NRS-Pain scores at endpoint-LOCF. Daily pain scores were assessed on an 11-point numerical rating scale <(NRS)-Pain> ranging from 0 (no pain) to 10 (worst possible pain). (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-1.03
Pregabalin-1.48

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"Percentage of Participants Who Was Categorized as Improved (Very Much Improved, Much Improved, or a Minimally Improved) According to the Patient Global Impressions of Change (PGIC)"

PGIC was defined as participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Change was defined as a score of 1 (very much improved), 2 (much improved), 3 (minimally improved), 4 (no change), 5 (minimally worse) , 6 (much worse) or 7 (very much worse) on the scale. (NCT00830167)
Timeframe: Week 15 or study discontinuation

InterventionPercentage of participants (Number)
Placebo62.1
Pregabalin70.0

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Medical Outcomes Study (MOS) Sleep Scale - Number of Participants With Optimal Sleep at Endpoint

MOS-Sleep is a patient-rated questionnaire to assess sleep quality and quantity. Optimal sleep component is derived from Sleep Quantity average hours of sleep each night during the past 4 weeks. Optimal sleep was defined as sleep quantity of 7 or 8 hours per night. (NCT00830167)
Timeframe: Week 15 or study discontinuation

InterventionParticipants (Number)
Placebo53
Pregabalin71

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Change From Baseline in Sleep Quality Score at Endpoint

Change: Mean sleep quality score at endpoint minus mean at baseline. Sleep quality scores range from 0-10 with higher scores indicating decreased sleep quality. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.79
Pregabalin-1.52

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Change From Baseline in Pain Visual Analog Scale (Pain VAS) Score at Endpoint

The pain VAS is a horizontal line; 100 mm in length, self-administered by the patient to rate pain from 0 (no pain) to 100 (worst possible pain). The score indicates the pain intensity during the past 1 week before a visit. Change = mean scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-14.11
Pregabalin-20.30

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Somnolence

MOS: participant-rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Somnolence subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score indicates greater intensity of somnolence. Change = mean scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-4.66
Pregabalin6.65

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Snoring

MOS: participant-rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Snoring subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score indicates greater intensity of snoring. Change = mean scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-1.61
Pregabalin3.37

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Sleep Disturbance

MOS: participant-rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Sleep Disturbance subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score indicates greater intensity of sleep disturbance. Change = mean scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-8.13
Pregabalin-17.62

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Sleep Adequacy

MOS: participant-rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Sleep Adequacy subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score indicates greater intensity of sleep adequacy. Change = mean scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo8.02
Pregabalin15.50

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Quantity of Sleep

MOS: participant-rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Quantity of Sleep subscales rated 0 to 24 (number of hours slept). A higher score indicates greater quantity of sleep. Change = mean scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo0.17
Pregabalin0.46

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Overall Sleep Problems Index

MOS: participant-rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Overall Sleep Problems Index subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score indicates greater intensity of overall sleep problems. Change = mean scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-7.07
Pregabalin-10.06

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale at Endpoint- Awaken Short of Breath or With a Headache

MOS: participant-rated questionnaire to assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); The MOS Awaken Short of Breath or With a Headache subscales rated 1 (all the time) to 6 (none of the time). Scores are transformed (actual raw score minus lowest possible score) divided by possible raw score range multiplied by 100; total score range = 0 to 100. A higher score indicates greater intensity of the symptom. Change = mean scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-3.02
Pregabalin-8.01

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Change From Baseline in Hospital Anxiety and Depression Scale (HADS) - Depression

Change: Mean HADS score at observation minus Mean at baseline. HADS anxiety and depression subscale scores range from 0 to 21, with higher scores indicating greater severity of the subscale condition. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo0.00
Pregabalin-0.29

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Change From Baseline in Hospital Anxiety and Depression Scale (HADS) - Anxiety

Change: Mean HADS score at observation minus Mean at baseline. HADS anxiety and depression subscale scores range from 0 to 21, with higher scores indicating greater severity of the subscale condition. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.09
Pregabalin-0.57

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Work Miss

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.30
Pregabalin-0.31

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Total Scores

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-7.26
Pregabalin-10.59

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Stiffness

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.90
Pregabalin-1.05

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Physical Function

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.19
Pregabalin-0.47

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Pain

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-1.06
Pregabalin-1.46

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Morning

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.97
Pregabalin-1.56

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Housework

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-1.00
Pregabalin-1.32

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Feel Good

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.82
Pregabalin-1.45

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Endpoint - Anxious

FIQ is a 20-item patient-reported outcome instrument designed to assess health status, progress, and outcomes in patients with fibromyalgia (10 subscales; 11 questions). Scores range from 0 to 100 with higher scores indicating more impairment. Change = mean FIQ scores at observation minus mean scores at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo-0.64
Pregabalin-0.92

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Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Vitality

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role limitations-physical, bodily pain, general health perceptions, vitality, social functioning, role limitations-emotional, and mental health. Subscale scores range: 0-100. Higher subscale scores = better health status. Change from baseline = score at observation minus score at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo5.12
Pregabalin9.53

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Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Social Functioning

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role limitations-physical, bodily pain, general health perceptions, vitality, social functioning, role limitations-emotional, and mental health. Subscale scores range: 0-100. Higher subscale scores = better health status. Change from baseline = score at observation minus score at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo6.84
Pregabalin8.43

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Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Role Limitations-Physical

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role limitations-physical, bodily pain, general health perceptions, vitality, social functioning, role limitations-emotional, and mental health. Subscale scores range: 0-100. Higher subscale scores = better health status. Change from baseline = score at observation minus score at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo8.36
Pregabalin10.04

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Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Role Limitations-Emotional

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role limitations-physical, bodily pain, general health perceptions, vitality, social functioning, role limitations-emotional, and mental health. Subscale scores range: 0-100. Higher subscale scores = better health status. Change from baseline = score at observation minus score at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo3.50
Pregabalin3.27

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Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Physical Functioning

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role limitations-physical, bodily pain, general health perceptions, vitality, social functioning, role limitations-emotional, and mental health. Subscale scores range: 0-100. Higher subscale scores = better health status. Change from baseline = score at observation minus score at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo4.72
Pregabalin9.01

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Change From Baseline in Analysis of SF-36 Health Survey Results at Endpoint- Mental Health

Subject-rated measure of health status comprised of 36 items: 8 subscale scores (physical functioning, role limitations-physical, bodily pain, general health perceptions, vitality, social functioning, role limitations-emotional, and mental health. Subscale scores range: 0-100. Higher subscale scores = better health status. Change from baseline = score at observation minus score at baseline. (NCT00830167)
Timeframe: Baseline, Week 15 or study discontinuation

InterventionScores on a scale (Least Squares Mean)
Placebo3.33
Pregabalin5.97

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Anxiety and Depression Symptoms

The presence of anxiety and depression symptoms were measured, based on how often the subject felt a certain emotion over the past week. Q1:Have you felt calm and relaxed? Q2: Have you felt full of energy? Q3: Have you felt discouraged and sad? Final Visit = Week 8 or time of discontinuation. (NCT00843284)
Timeframe: Baseline, Final Visit (Week 8 or discontinuation)

Interventionparticipants (Number)
Q1 at baseline: AlwaysQ1 at baseline: Most of the timeQ1 at baseline: Fairly oftenQ1 at baseline: SometimesQ1 at baseline: RarelyQ1 at baseline: NeverQ1 at baseline: MissingQ1 at baseline: Not doneQ1 at final visit: AlwaysQ1 at final visit: Most of the timeQ1 at final visit: Fairly oftenQ1 at final visit: SometimesQ1 at final visit: RarelyQ1 at final visit: NeverQ1 at final visit: MissingQ1 at final visit: Not doneQ2 at baseline: AlwaysQ2 at baseline: Most of the timeQ2 at baseline: Fairly oftenQ2 at baseline: SometimesQ2 at baseline: RarelyQ2 at baseline: NeverQ2 at baseline: MissingQ2 at baseline: Not doneQ2 at final visit: AlwaysQ2 at final visit: Most of the timeQ2 at final visit: Fairly oftenQ2 at final visit: SometimesQ2 at final visit: RarelyQ2 at final visit: NeverQ2 at final visit: MissingQ2 at final visit: Not doneQ3 at baseline: AlwaysQ3 at baseline: Most of the timeQ3 at baseline: Fairly oftenQ3 at baseline: SometimesQ3 at baseline: RarelyQ3 at baseline: NeverQ3 at baseline: MissingQ3 at baseline: Not doneQ3 at final visit: AlwaysQ3 final visit: Most of the timeQ3 at final visit: Fairly oftenQ3 at final visit: SometimesQ3 at final visit: RarelyQ3 at final visit: NeverQ3 at final visit: MissingQ3 at final visit: Not done
Pregabalin (150 mg to 600 mg Per Day in 2 to 3 Divided Doses)8145719918618302127152168176723713551562150196219021211081681741025913548167190143594002173773179161175135

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Daily Average Pain Scores

Change is observed value at final visit (Week 8 or discontinuation) minus baseline value. Daily average pain score is measured using a 10-point Likert scale where 0 = no pain to 10 = pain as bad as you can imagine. (NCT00843284)
Timeframe: Baseline, Final Visit (Week 8 or discontinuation)

Interventionscores on scale (Mean)
BaselineFinal visit (Week 8 or discontinuation)Change from baseline
Pregabalin (150 mg to 600 mg Per Day in 2 to 3 Divided Doses)7.613.46-4.16

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Patient Global Improvement of Change (PGIC) at Final Visit (Week 8 or Discontinuation)

"Patient Global Improvement of Change (PGIC) indicates the change of severity of conditions from baseline, graded from very much improved to very much worse." (NCT00843284)
Timeframe: Final Visit (Week 8 or discontinuation)

Interventionparticipants (Number)
Not assessedVery much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worseNot done
Pregabalin (150 mg to 600 mg Per Day in 2 to 3 Divided Doses)0175245193447200

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Clinician Global Improvement of Change (CGIC) at Final Visit (Week 8 or Discontinuation)

"Clinician Global Improvement of Change (CGIC) indicates the change of the severity of the condition from baseline, graded from very much improved to very much worse." (NCT00843284)
Timeframe: Final Visit (Week 8 or discontinuation)

Interventionparticipants (Number)
Not assessedVery much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worseNot done
Pregabalin (150 mg to 600 mg Per Day in 2 to 3 Divided Doses)0160292171391200

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Change From Baseline to Month 6 in Total Number of Days Hospitalized Because of Epilepsy

Numerical assessment of change in total number of days hospitalized because of epilepsy during the study. (NCT00855738)
Timeframe: Baseline to Month 6

InterventionDays (Mean)
All Antiepileptic Drugs-8.0

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Percent of Participants With Cessation of Occupation, Requirement of Caregiver, or Admission to Intensive Care Unit

Percent of participants with cessation of usual occupation, requirement of an informal caregiver, and who required admission to the intensive care unit (ICU). (NCT00855738)
Timeframe: Month 6

Interventionpercent of participants (Number)
Stopped Usual OccupationRequired Informal CaregiverRequired Admission to ICU
All Antiepileptic Drugs16.26.60.0

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Percent of Participants Indicating Optimal Sleep on the Optimal Sleep Subscale: Medical Outcomes Study Sleep Scale (MOS-SS)

MOS-SS: subject rated instrument used to assess the key constructs of sleep; assesses sleep quantity and quality and is comprised of 12 items yielding 7 subscale scores and 2 composite index scores. Optimal sleep subscale is derived from sleep quantity average hours of sleep over the past 4 weeks; percent of participants with response YES (optimal) if sleep quantilty was 7-8 hours of sleep per night. (NCT00855738)
Timeframe: Baseline, Month 6

Interventionpercent of participants (Number)
BaselineMonth 6
All Antiepileptic Drugs56.565.7

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Percent of Participants Classified as Responders

Responder = decrease in number of seizures by >=50 percent (%) during the last 3 months of treatment before discontinuation (assessed at Month 3 and Month 6) versus the number of seizures that occurred during the 3 months before the baseline visit (baseline). (NCT00855738)
Timeframe: Baseline, Month 3, Month 6 (last 3 months of treatment)

Interventionpercent of participants (Number)
Month 3Month 6
All Antiepileptic Drugs76.780.0

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Percent of Participants That Reduced, Maintained and Increased the Doses of the Initial Treatment Administered in Monotherapy

(NCT00855738)
Timeframe: Baseline through Month 6 (or end of treatment)

Interventionpercent of participants (Number)
ReducedMaintainedIncreased
All Antiepileptic Drugs0.0100.00.0

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Percent of Participants That Reduced, Maintained and Increased Their Doses of New Antiepileptic Drugs (AED)

(NCT00855738)
Timeframe: Baseline to Month 6 (or end of treatment)

Interventionpercent of participants (Number)
ReducedMaintainedIncreased
All Antiepileptic Drugs0.968.530.6

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Change in Sleep Disturbances From Baseline to Month 6: Medical Outcomes Study Sleep Scale (MOS-SS)

Subject rated instrument to assess key constructs of sleep; assesses sleep quality and quantity. Consists of a 6-item and 9-item overall sleep problems index measuring time to fall asleep and sleep duration in past 4 weeks; 5 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath, somnolence, and adequacy. Transformed scores range = 0 to 100; higher score indicates greater intensity of attribute. Two additional subscales = sleep quantity (range 0-24 hours) and optimal sleep (number of participants with optimal sleep 7-8 hours per night). (NCT00855738)
Timeframe: Baseline to Month 6

Interventionscores on scale (Mean)
Sleep disturbanceSnoringAwake short of breathQuantityAdequacySomnolenceSleep problems (summary 6)Sleep problems (summary 9)
All Antiepileptic Drugs-1.70.01.10.22.80.6-0.9-0.9

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Percent of Participants With Reduction in Number of Seizures >=25% and >=75% During the Last 3 Months of Treatment

Percent of participants with reduction in number of seizures >=25% and >=75% during the last 3 months of treatment before discontinuation (assessed at Month 3 and Month 6) versus the 3 month period before the baseline visit. (NCT00855738)
Timeframe: Baseline, Month 3, Month 6 (last 3 months of treatment)

Interventionpercent of participants (Number)
Month 3: >=25%Month 3: >=75%Month 6: >= 25%Month 6: >=75%
All Antiepileptic Drugs86.727.886.754.4

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Percent of Seizure-free Participants During the Last 3 Months Before Discontinuation

(NCT00855738)
Timeframe: Baseline, Month 3, Month 6 (last 3 months of treatment)

Interventionpercent of participants (Number)
Month 3Month 6
All Antiepileptic Drugs10.020.0

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Change From Baseline to Months 3 and 6 in Health Condition: Euro Quality of Life Scale (EQ-5D) Visual Analog Scale (VAS)

Assessment of the health condition of the subjects using the EQ-5D VAS: subject rated questionnaire to assess health-related quality of life in terms of a single index value. Using the VAS subjects rated current health state on a scale from 0 (worst imaginable health state) to 100 (best imaginable health state); higher scores indicate a better health state. (NCT00855738)
Timeframe: Baseline, Month 3, Month 6

Interventionscores on scale (Mean)
Month 3Month 6
All Antiepileptic Drugs-0.41.2

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Change From Baseline to Month 6 in Visits to a Specialist or the Emergency Room Because of Epilepsy

Numerical assessment of change in the number of visits to a specialist or the emergency room because of epilepsy needed during the study. (NCT00855738)
Timeframe: Baseline to Month 6

Interventionvisits (Mean)
Number of visits to a specialist (n=94)Number of visits to the emergency room (n=79)
All Antiepileptic Drugs-0.6-0.3

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Change From Baseline to Month 6 in the Hospital Anxiety and Depression Scale (HADS)

HADS: subject rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT00855738)
Timeframe: Baseline to Month 6

Interventionscores on scale (Mean)
DepressionAnxiety
All Antiepileptic Drugs-0.5-0.6

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Change From Baseline to Month 6 in Quality of Life 10 Domains (QOLIE-10)

QOLIE-10: 10-item questionnaire evaluates health-related quality of life in individuals with epliepsy. Comprised of 7 components: seizure worry, overall quality of life, emotional well-being, energy, cognitive functioning, medication effects (physical and mental effects), and social function (work, driving, social function). Total score rated 0 to 100; higher score = higher quality of life. (NCT00855738)
Timeframe: Baseline to Month 6

Interventionscores on scale (Mean)
EnergyEmotions (mood)Daily activitiesMental functionMedication effects (physical/ mental)Worry about seizures (impact of seizures)Overall quality of life
All Antiepileptic Drugs0.40.70.61.2-1.19.03.8

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Time to First Seizure

Number of days to first seizure after baseline. (NCT00855738)
Timeframe: Baseline to Month 6 (or end of treatment)

Interventiondays (Mean)
All Antiepileptic Drugs35.9

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Percent of Participants Who Continued on Study Medication to Month 6

Retention rate: percent of participants who continued on study medication throughout the 6 Month period after inclusion in the study. (NCT00855738)
Timeframe: Baseline to Month 6

Interventionpercent of participants (Number)
All Antiepileptic Drugs97.1

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Percent of Participants Reaching Monotherapy

Percent of participants who started on more than one treatment (bitherapy) and reached monotherapy by end of study. (NCT00855738)
Timeframe: Baseline through Month 6 (or end of study)

Interventionpercent of partipants (Number)
All Antiepileptic Drugs2.9

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Percent Change From Baseline in the Median Number of Seizures During the Last 3 Months of Treatment

(NCT00855738)
Timeframe: Baseline, Month 3, Month 6 (last 3 months of treatment)

Interventionpercent change (Median)
All Antiepileptic Drugs-75.0

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Latency of Sleep Onset (LSO)

LSO as reported on daily Subjective Sleep Questionnaire (SSQ), a participant reported subjective estimate of the amount of time to fall asleep after lights out. Weekly values were calculated as the average minutes reported on the participant's daily SSQ. (NCT00883740)
Timeframe: Weeks 1, 2, 3 and 4 of Each Intervention Period or ET

,
InterventionMinutes (Least Squares Mean)
Week 1Week 2Week 3Week 4
Placebo51.2349.9448.9246.70
Pregabalin43.5642.2743.2440.51

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Total Sleep Time (TST)

TST, as determined by PSG, was the number of non-wake epochs from the beginning of recording to the end of the recording. TST was the sum of 2 consecutive nights of recording divided by 2 at the end of each intervention period. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

InterventionMinutes (Least Squares Mean)
Placebo370.6
Pregabalin396.2

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Wake Time After Sleep (WTAS)

WTAS, as determined by PSG, was the total amount of time awake after the final awakening until the end of the 8 hours. WTAS was the sum of 2 consecutive nights of recordings divided by 2 at the end of each intervention period. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

InterventionMinutes (Least Squares Mean)
Placebo9.19
Pregabalin7.38

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Subjective Wake After Sleep Onset (sWASO)

sWASO as reported on daily SSQ, a participant reported subjective estimate of the total amount of time the participant was awake after initial sleep onset until final awakening. Weekly values were calculated as the average of the participant's daily SSQ values. (NCT00883740)
Timeframe: Weeks 1, 2, 3 and 4 of Each Intervention Period or ET

,
InterventionMinutes (Least Squares Mean)
Week 1Week 2Week 3Week 4
Placebo80.8675.4874.9769.65
Pregabalin62.5959.4361.7359.40

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Number of Awakenings After Sleep Onset (NAASO 1)

NAASO 1, as determined by PSG, was the number of times there was a wake period of at least one epoch in duration. Each entry counted was separated by a Stage 2 epoch, Stage 3 and 4 epoch, or Stage rapid eye movement (REM) epoch. The sum of 2 consecutive nights of recording was divided by 2 at the end of each intervention period. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

InterventionAwakenings (Least Squares Mean)
Placebo26.92
Pregabalin24.51

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Number of Awakenings After Sleep Onset (NAASO 2)

NAASO 2, as determined by PSG, was the number of times that there was a wake period of at least two epochs in duration. Each entry counted was separated by a Stage 2 epoch, Stage 3 and 4 epoch, or Stage REM epoch. The sum of 2 consecutive nights of recording divided by 2 at the end of each intervention period. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

InterventionAwakenings (Least Squares Mean)
Placebo10.16
Pregabalin8.63

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Sleep Efficiency (SE)

SE, as determined by PSG, was the TST divided by the time in bed, multiplied by 100. The sum of 2 consecutive nights of recording divided by 2 at the end of each intervention period. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

InterventionPercentage of time asleep (Least Squares Mean)
Placebo77.21
Pregabalin82.64

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Slow Wave Sleep (SWS)

SWS, as determined by PSG, Stage 3 plus 4 sleep divided by TST times 100 was the percentage of TST. The sum of 2 consecutive nights of recording divided by 2 at the end of each intervention period. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

InterventionPercentage of total sleep time (Least Squares Mean)
Placebo15.04
Pregabalin17.18

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Subjective Total Sleep Time (sTST)

sTST as reported on daily SSQ, a participant reported subjective estimate of the total amount of time the participant was asleep after lights out until final awakening. Weekly values were calculated as the average of the participants daily SSQ values. (NCT00883740)
Timeframe: Weeks 1, 2, 3 and 4 of Each Intervention Period or ET

,
InterventionMinutes (Least Squares Mean)
Week 1Week 2Week 3Week 4
Placebo336.8341.9344.1352.5
Pregabalin361.7371.3370.9377.9

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Sleep Quality

Sleep Quality as meassured by numeric rating scale (NRS), a participant rated scale 0 to 10, (0 = very poor sleep, 10 = excellent sleep). Weekly values were calculated as the average of the participants daily diary scores. (NCT00883740)
Timeframe: Weeks 1, 2, 3 and 4 of Each Intervention Period or ET

,
InterventionUnit on a scale (Least Squares Mean)
Week 1Week 2Week 3Week 4
Placebo4.794.955.095.17
Pregabalin5.706.095.966.06

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Daily Pain Score

Pain intensity as measured by NRS; a participant rated scale 0 to 10 (0 = no pain to 10 = worst pain possible). Weekly values were calculated as the average of the participants daily pain scores. (NCT00883740)
Timeframe: Daily up to Day 73 or ET

,
InterventionUnits on a scale (Least Squares Mean)
Week 1Week 2Week 3Week 4
Placebo6.125.815.735.44
Pregabalin5.425.105.144.92

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Wake Time During Sleep (WTDS)

WTDS, as determined by PSG, was the total amount of time awake the participant experienced after the onset of persistent sleep and prior to the final awakening, or at the end of 8 hours of recording. WTDS was the sum of 2 consecutive nights of recordings divided by 2 at the end of each intervention period. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

InterventionMinutes (Least Squares Mean)
Placebo63.38
Pregabalin45.83

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Change From Baseline in MOS-SS Sleep Problems Index II Weeks 5 and 11

MOS-SS, a participant rated instrument used to assess sleep quantity and quality over the previous week, was compromised of 12 items yielding 7 subscale scores and 2 index composite index scores. Composite index included Sleep Problems Index II (9 items), scores ranged from 0 to 100; higher scores indicated greater sleep problems. Change was score at week x minus score at baseline. (NCT00883740)
Timeframe: Week 1 (Baseline Intervention Period 1), Week 5 (End of Intervention Period 1), Week 7 (Baseline Intervention Period 2) and Week 11 (End of Intervention Period 2) or ET

,
InterventionUnits on a scale (Least Squares Mean)
Change Week 1 to Week 5 (n=59, 56)Change Week 7 to Week 11 (50, 52)
Placebo-16.4-0.98
Pregabalin-21.9-14.4

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Change From Baseline in MOS-SS Sleep Disturbance at Weeks 5 and 11

MOS-SS, a participant rated instrument used to assess sleep quantity and quality over the previous week, was comprised of 12 items yielding 7 subscale scores and 2 index composite index scores. Sleep Disturbance subscale score (4 items): individual scores were transformed (actual raw score minus lowest possible score divided by possible raw score range times 100) and ranged from 0 to 100; higher score indicated greater disturbance. Total score ranged=0 to 100; higher score indicates greater intensity of attribute. Change was score at week x minus score at baseline. (NCT00883740)
Timeframe: Week 1 (Baseline Intervention Period 1), Week 5 (End of Intervention Period 1), Week 7 (Baseline Intervention Period 2) and Week 11 (End of Intervention Period 2) or ET

,
InterventionUnits on a scale (Least Squares Mean)
Change Week 1 to Week 5 (n=59, 56)Change Week 7 to Week 11 (n=50, 52)
Placebo-19.0-2.23
Pregabalin-27.1-21.0

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Wake After Sleep Onset (WASO) at Weeks 5 and 11

WASO was the sum of wake time during sleep measured in epochs (30 seconds of polysomnography [PSG]) recording) after the onset of persistent sleep and prior to final awakening and wake time after sleep (the number of epochs after the final awakening until the end of PSG recording [i.e. awake epoch immediately prior to the end of the recording]) on 2 consecutive nights divided by 2 at the end of each intervention period. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or Early Termination (ET)

InterventionMinutes (Least Squares Mean)
Placebo70.69
Pregabalin51.54

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Latency to Persistent Sleep (LPS)

LPS, as determined by PSG, was the total number of epochs recorded on 2 consecutive nights divided by 2 at the end of each intervention period, from the beginning of the recording to the start of the first 20 consecutive non-wake epochs. (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

InterventionMinutes (Least Squares Mean)
Placebo41.63
Pregabalin34.45

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WASO by Each Quarter of the Night

WASO, as determined by PSG, was the sum of wake time during sleep (number of wake epochs after the onset of persistent sleep and prior to final awakening) and wake time after sleep (the number of epochs after the final awakening until the end of PSG recording) on 2 consecutive nights divided by 2 at the end of each intervention period by each individual quarter of the night (eight hours in 2 hour increments). (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

,
InterventionMinutes (Least Squares Mean)
Quarter 1Quarter 2Quarter 3Quarter 4
Placebo7.2316.0421.7328.04
Pregabalin5.9810.0414.9022.60

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WASO by Hour of the Night

WASO, as determined by PSG, was the wake time during sleep (number of wake epochs after the onset of persistent sleep and prior to final awakening) and wake time after sleep (the number of epochs after the final awakening until the end of PSG recording) on 2 consecutive nights divided by 2 at the end of each intervention period by each individual hour (8 hours total). (NCT00883740)
Timeframe: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

,
InterventionMinutes (Least Squares Mean)
Hour 1Hour 2Hour 3Hour 4Hour 5Hour 6Hour 7Hour 8
Placebo1.965.667.098.9510.5511.2610.9617.08
Pregabalin1.624.564.655.437.547.388.3814.23

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Physician's Clinical Global Impression (CGI) of Treatment Satisfaction at the Second and Final Visits

Physician's Clinical Global Impression of treatment satisfaction. Treatment satisfaction item of the CGI has a scale of five discrete score points: excellent, very good, good, fair and poor. Shift table shows the number of subjects with each score point rating at the Final Visit by the number of subjects with each score point rating at the Second Visit. (NCT00892008)
Timeframe: Second Visit (Week ≥ 2), Final Visit (Week 4)

Interventionparticipants (Number)
2nd Visit: Excellent (n=272); Final Vst: Excellent2nd Visit: Excellent (n=272); Final Vst: Very Good2nd Visit: Excellent (n=272); Final Visit: Good2nd Visit: Excellent (n=272); Final Visit: Fair2nd Visit: Excellent (n=272); Final Visit: Poor2nd Visit: Excellent (n=272); Final Visit: Missing2nd Visit: Very Good (n=803); Final Vst: Excellent2nd Visit: Very Good (n=803); Final Vst: Very Good2nd Visit: Very Good (n=803); Final Visit: Good2nd Visit: Very Good (n=803); Final Visit: Fair2nd Visit: Very Good (n=803); Final Visit: Poor2nd Visit: Very Good (n=803); Final Visit: Missing2nd Visit: Good (n=438); Final Visit: Excellent2nd Visit: Good (n=438); Final Visit: Very Good2nd Visit: Good (n=438); Final Visit: Good2nd Visit: Good (n=438); Final Visit: Fair2nd Visit: Good (n=438); Final Visit: Poor2nd Visit: Good (n=438); Final Visit: Missing2nd Visit: Fair (n=71); Final Visit: Excellent2nd Visit: Fair (n=71); Final Visit: Very Good2nd Visit: Fair (n=71); Final Visit: Good2nd Visit: Fair (n=71); Final Visit: Fair2nd Visit: Fair (n=71); Final Visit: Poor2nd Visit: Fair (n=71); Final Visit: Missing2nd Visit: Poor (n=7); Final Visit: Excellent2nd Visit: Poor (n=7); Final Visit: Very Good2nd Visit: Poor (n=7); Final Visit: Good2nd Visit: Poor (n=7); Final Visit: Fair2nd Visit: Poor (n=7); Final Visit: Poor2nd Visit: Poor (n=7); Final Visit: Missing2nd Visit: Missing (n=12); Final Visit: Excellent2nd Visit: Missing (n=12); Final Visit: Very Good2nd Visit: Missing (n=12); Final Visit: Good2nd Visit: Missing (n=12); Final Visit: Fair2nd Visit: Missing (n=12); Final Visit: Poor2nd Visit: Missing (n=12); Final Visit: Missing
Pregabalin209620055307421100065272671194021722303180121120000012

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Patient's Clinical Global Impression (CGI) of Efficacy at Second and Final Visit

Patient's Clinical Global Impression of efficacy. Efficacy item of CGI has a scale of five discrete points: excellent, very good, good, fair and poor. Shift table shows the number of subjects with each score point rating at the Final Visit by the number of subjects with each score point rating at the Second Visit. (NCT00892008)
Timeframe: Second Visit (Week ≥ 2), Final Visit (Week 4)

Interventionparticipants (Number)
2nd Visit: Excellent (n=264); Final Visit: Excell2nd Visit: Excellent (n=264); Final Vst: Very Good2nd Visit: Excellent (n=264); Final Visit: Good2nd Visit: Excellent (n=264); Final Visit: Fair2nd Visit: Excellent (n=264); Final Visit: Poor2nd Visit: Excellent (n=264); Final Visit: Missing2nd Visit: Very Good (n=775); Final Visit: Excell2nd Visit: Very Good (n=775); Final Vst: Very Good2nd Visit: Very Good (n=775); Final Visit: Good2nd Visit: Very Good (n=775); Final Visit: Fair2nd Visit: Very Good (n=775); Final Visit: Poor2nd Visit: Very Good (n=775); Final Visit: Missing2nd Visit: Good (n=450); Final Visit: Excellent2nd Visit: Good (n=450): Final Visit: Very Good2nd Visit: Good (n=450); Final Visit: Good2nd Visit: Good (n=450); Final Visit: Fair2nd Visit: Good (n=450); Final Visit: Poor2nd Visit: Good (n=450); Final Visit: Missing2nd Visit: Fair (n=75); Final Visit: Excellent2nd Visit: Fair (n=75); Final Visit: Very Good2nd Visit: Fair (n=75); Final Visit: Good2nd Visit: Fair (n=75); Final Visit: Fair2nd Visit: Fair (n=75); Final Visit: Poor2nd Visit: Fair (n=75); Final Visit: Missing2nd Visit: Poor (n=12); Final Visit: Excellent2nd Visit :Poor (n=12); Final Visit: Very Good2nd Visit: Poor (n=12); Final Visit: Good2nd Visit: Poor (n=12); Final Visit: Fair2nd Visit: Poor (n=12); Final Visit: Poor2nd Visit: Poor (n=12); Final Visit: Missing2nd Visit: Missing (n=27); Final Visit: Excellent2nd Visit: Missing (n=27); Final Visit: Very Good2nd Visit: Missing (n=27); Final Visit: Good2nd Visit: Missing (n=27); Final Visit: Fair2nd Visit: Missing (n=27); Final Visit: Poor2nd Visit: Missing (n=27); Final Visit: Missing
Pregabalin2068000502864051210713426612710226213210061220340301023

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Discontinuations Due to Adverse Events

Discontinuations due to adverse events by MedDRA system organ class and preferred term. (NCT00892008)
Timeframe: Baseline, Second Visit (Week ≥ 2), Final Visit (Week 4)

Interventionparticipants (Number)
Cardiac Disorders: palpitationsEar and Labyrinth Disorders: vertigoGastrointestinal Disorders: nauseaGastrointestinal Disorders: vomitingGeneral/ Administrative Site Conditions: astheniaNervous System Disorders: somnolenceResp., Thoracic & Mediastinal Disorders: snoringVascular Disorders: hypertension
Pregabalin115322611

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Number and Severity of Adverse Events (All Causalities); Baseline to Final Visit (Week 4)

Number and severity of adverse events, including serious adverse events. If the same subject had more than one occurance in the same preferred term event category, only the most severe occurrence was taken. (NCT00892008)
Timeframe: Baseline through Final Visit (Week 4)

Interventionparticipants (Number)
Cardiac Disorderspalpitations (mild)Ear and Labyrinth Disordersear disorder (moderate)vertigo (moderate)vertigo (severe)Gastrointestinal Disordersabdominal discomfort (moderate)abdominal distension (unspecified)abdominal pain (upper)constipation (unspecified)constipation (mild)diarrhoea (mild)diarrhoea (moderate)dry mouth (mild)dry mouth (moderate)dyspepsia (mild)epigastric discomfort (mild)nausea (mild)nausea (moderate)nausea (severe)vomiting (mild)vomiting (moderate)vomiting (severe)General Disorders & Administration Site Conditionsasthenia (mild)asthenia (moderate)asthenia (severe)fatigue (moderate)ill-defined disorder (mild)ill-defined disorder (moderate)ill-defined disorder (severe)irritability (mild)irritability (moderate)multi-organ failure (unspecified)oedema peripheral (unspecified)oedema peripheral (moderate)pyrexia (mild)Hepatobiliary Disordersjaundice (moderate)Infections and Infestationsbronchopneumonia (unspecified)pneumonia (unspecified)Investigationsweight increased (moderate)Metabolism and Nutrition Disordersanorexia (moderate)hypoglycemia (moderate)increased appetite (mild)Musculoskeletal and Connective Tissue Disordersmuscular weakness (mild)myalgia (mild)Neoplasms Benign, Malignant and Unspecifiedbreast cancer stage III (unspecified)metastases to central nervous system (unspecified)metastatic neoplasm (unspecified)Nervous System Disordersbalance disorder (mild)dizziness (unspecified)dizziness (mild)dizziness (moderate)dizziness (severe)headache (mild)headache (moderate)hypersomnia (mild)hypersomnia (moderate)incoherent (moderate)neuralgia (unspecified)paraesthesia (mild)sedation (moderate)sedation (severe)somnolence (unspecified)somnolence (mild)somnolence (moderate)somnolence (severe)syncope (moderate)syncope (severe)tremor (moderate)Psychiatric Disordersabnormal dreams (moderate)confusional state (mild)insomnia (severe)Reproductive and Breast Disordersejaculation disorder (unspecified)Respiratory, Thoracic and Mediastinal Disordersdyspnoea (severe)dyspnoea exertional (mild)snoring (severe)Skin and Subcutaneous Tissue Disordersrash generalized (severe)Vascular Disordershypertension (unspecified)hypotension (moderate)pallor (mild)
Pregabalin11311144111111133111013484120221252121111211211113111211311123312794783152111323622441113111113111113111

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Patient's Clinical Global Impression (CGI) of Tolerability at Second and Final Visit

Patient's Clinical Global Impression of tolerability. The tolerability item of CGI has a scale of five discrete points: excellent, very good, good, fair and poor. Shift table shows the number of subjects with each score point rating at the Final Visit by the number of subjects with each score point rating at the Second Visit. Abbreviation: vst = visit. (NCT00892008)
Timeframe: Second Visit (Week ≥ 2), Final Visit (Week 4)

Interventionparticipants (Number)
2nd Visit: Excellent (n=278); Final Visit: Excell2nd Visit: Excellent (n=278); Final Vst: Very Good2nd Visit: Excellent (n=278); Final Visit: Good2nd Visit: Excellent (n=278); Final Visit: Fair2nd Visit: Excellent (n=278); Final Visit: Poor2nd Visit: Excellent (n=278); Final Visit: Missing2nd Visit: Very Good (n=750); Final Visit: Excell2nd Visit: Very Good (n=750); Final Vst: Very Good2nd Visit: Very Good (n=750); Final Visit: Good2nd Visit: Very Good (n=750); Final Visit: Fair2nd Visit: Very Good (n=750); Final Visit: Poor2nd Visit: Very Good (n=750); Final Visit: Missing2nd Visit: Good (n=465); Final Visit: Excellent2nd Visit: Good (n=465); Final Visit: Very Good2nd Visit: Good (n=465); Final Visit: Good2nd Visit: Good (n=465); Final Visit: Fair2nd Visit: Good (n=465); Final Visit: Poor2nd Visit: Good (n=465); Final Visit: Missing2nd Visit: Fair (n=71); Final Visit: Excellent2nd Visit: Fair (n=71); Final Visit: Very Good2nd Visit: Fair (n=71); Final Visit: Good2nd Visit: Fair (n=71); Final Visit: Fair2nd Visit: Fair (n=71); Final Visit: Poor2nd Visit: Fair (n=71); Final Visit: Missing2nd Visit: Poor (n=11); Final Visit: Excellent2nd Visit: Poor (n=11); Final Visit: Very Good2nd Visit: Poor (n=11); Final Visit: Good2nd Visit: Poor (n=11); Final Visit: Fair2nd Visit: Poor (n=11); Final Visit: Poor2nd Visit: Poor (n=11); Final Visit: Missing2nd Visit: Missing (n=28); Final Visit: Excellent2nd Visit: Missing (n=28); Final Visit: Very Good2nd Visit: Missing (n=28); Final Visit: Good2nd Visit: Missing (n=28); Final Visit: Fair2nd Visit: Missing (n=28); Final Visit: Poor2nd Visit: Missing (n=28); Final Visit: Missing
Pregabalin2131400051257415131064272551514226818317161210341201024

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Change From Baseline in Visual Analogue Scale (VAS) Score

Change from Baseline in 10 cm VAS pain score; 10-point pain intensity ordinal rating system: 0 = no pain, 1-3 = mild pain, 4-6 = moderate pain, 7-9 = severe pain, 10 = worst possible pain. Change = scores at second visit and final visit minus score at Baseline. (NCT00892008)
Timeframe: Baseline, Second Visit (Week ≥ 2), Final Visit (Week 4)

Interventionscores on scale (Mean)
Second Visit (n=1472)Final Visit (n=1126)
Pregabalin3.55.1

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VAS Pain Score at Baseline and Final Visit

VAS Pain Score 10 cm (10-point) pain intensity ordinal rating system: 0 = no pain, 1-3 = mild pain, 4-6 = moderate pain, 7-9 = severe pain, 10 = worst possible pain. Shift table shows the number of subjects with each pain intensity rating at the Final Visit by the number of subjects with each pain intensity rating at Baseline. Abbreviations: mod = moderate, sev = severe, wrst = worst, poss = possible, pn = pain, vst = visit. (NCT00892008)
Timeframe: Baseline, Final Visit (Week 4)

Interventionparticipants (Number)
BL: Mild Pain (n=25); Final Visit: Mild PainBL: Mild Pain (n=25); Final Visit: Moderate PainBL: Mild Pain (n=25); Final Visit: Severe PainBL: Mild Pain (n=25); Final Visit: MissingBL: Moderate Pain (n=450); Final Visit: Mild PainBL: Moderate Pain (n=450); Final Visit: Mod. PainBL: Moderate Pain (n=450); Final Visit: Sev. PainBL: Moderate Pain (n=450); Final Visit: MissingBL: Severe Pain (n=985); Final Visit: Mild PainBL: Severe Pain (n=985); Final Visit: Mod. PainBL: Severe Pain (n=985); Final Visit: Severe PainBL: Severe Pain (n=985); Final Visit: MissingBL: Worst Poss. Pain (n=98); Final Vst: Mild PainBL: Worst Poss. Pain (n=98); Final Vst: Mod PainBL: Worst Poss. Pain (n=98); Final Visit: Sev PainBL: Worst Poss. Pain (n=98); Final Visit: MissingBL: Missing (n=45); Final Visit: Mild PainBL: Missing (n=45); Final Visit: Moderate PainBL: Missing (n=45); Final Visit: Severe PainBL: Missing (n=45); Final Visit: Missing
Pregabalin1200132721911586021346243542511841139

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Physician's Clinical Global Impression (CGI) on Tolerability at Second and Final Viist

Physician's Clinical Global Impression of tolerability. Tolerability item of CGI has a scale of five discrete points: excellent, very good, good, fair and poor. Shift table shows the number of subjects with each score point rating at the Final Visit by the number of subjects with each score point rating at the Second Visit. (NCT00892008)
Timeframe: Second Visit (Week ≥ 2), Final Visit (Week 4)

Interventionparticipants (Number)
2nd Visit: Excellent (n=309); Final Visit: Excell2nd Visit: Excellent (n=309); Final Vst: Very Good2nd Visit: Excellent (n=309); Final Visit: Good2nd Visit: Excellent (n=309); Final Visit: Fair2nd Visit: Excellent (n=309); Final Visit: Poor2nd Visit: Excellent (n=309); Final Visit: Missing2nd Visit: Very Good (n=764); Final Visit: Excell2nd Visit: Very Good (n=764); Final Vst:Very Good2nd Visit: Very Good (n=764); Final Visit: Good2nd Visit: Very Good (n=764); Final Visit: Fair2nd Visit: Very Good (n=764); Final Visit: Poor2nd Visit: Very Good (n=764); Final Visit: Missing2nd Visit: Good (n=436); Final Visit: Excellent2nd Visit: Good (n=436); Final Visit: Very Good2nd Visit: Good (n=436); Final Visit: Good2nd Visit: Good (n=436); Final Visit: Fair2nd Visit: Good (n=436); Final Visit: Poor2nd Visit: Good (n=436); Final Visit: Missing2nd Visit: Fair (n=67); Final Visit: Excellent2nd Visit: Fair (n=67); Final Visit: Very Good2nd Visit: Fair (n=67); Final Visit: Good2nd Visit: Fair (n=67); Final Visit: Fair2nd Visit: Fair (n=67); Final Visit: Poor2nd Visit: Fair (n=67); Final Visit: Missing2nd Visit: Poor (n=6); Final Visit: Excellent2nd Visit: Poor (n=6); Final Visit: Very Good2nd Visit: Poor (n=6); Final Visit: Good2nd Visit: Poor (n=6); Final Visit: Fair2nd Visit: Poor (n=6); Final Visit: Poor2nd Visit: Poor (n=6); Final Visit: Missing2nd Visit: Missing (n=21); Final Visit: Excellent2nd Visit: Missing (n=21); Final Visit: Very Good2nd Visit: Missing (n=21); Final Visit: Good2nd Visit: Missing (n=21); Final Visit: Fair2nd Visit: Missing (n=21); Final Visit: Poor2nd Visit: Missing (n=21); Final Visit: Missing
Pregabalin237120006025543191167242541351121619305161010311200018

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VAS Pain Score at Baseline (BL) and Second Visit

VAS Pain Score: 10 cm (10-point) pain intensity ordinal rating system: 0 = no pain, 1-3 = mild pain, 4-6 = moderate pain, 7-9 = severe pain, 10 = worst possible pain. Shift table shows the number of subjects with each pain intensity rating at the Second Visit by the number of subjects with each pain intensity rating at Baseline. Abbreviations: mod = moderate, sev = severe, wrst = worst, poss = possible, pn = pain, vst = visit . (NCT00892008)
Timeframe: Baseline, Second Visit (Week ≥ 2)

Interventionparticipants (Number)
BL: Mild Pain (n=25); 2nd Visit: Mild PainBL: Mild Pain (n= 25); 2nd Visit: Moderate PainBL: Mild Pain (n= 25); 2nd Visit: Severe PainBL:Mild Pain (n= 25); 2nd Visit: Worst Poss. PainBL: Mild Pain (n= 25); 2nd Visit: MissingBL: Moderate Pain (n=450); 2nd Visit: Mild PainBL: Moderate Pain (n=450): 2nd Visit: Mod PainBL: Moderate Pain (n=450); 2nd Visit: Severe PainBL: Mod Pain (n=450); 2nd Visit: Worst Poss. PainBL: Moderate Pain (n=450); 2nd Visit: MissingBL: Severe Pain (n=985); 2nd Visit: Mild PainBL: Severe Pain (n=985); 2nd Visit: Moderate PainBL: Severe Pain (n=985) ; 2nd Visit: Severe PainBL: Sev Pain (n=985); 2nd Visit: Worst Poss. painBL: Severe Pain (n=985); 2nd Visit: MissingBL: Worst Poss. Pain (n=98) ; 2nd Visit: Mild PainBL: Worst Poss. Pain (n=98); 2nd Visit: Mod PainBL: Worst Poss. Pain (n=98); 2nd Visit: Sev PainBL:Wrst Poss Pain (n=98); 2nd Visit: Wrst Poss. PnBL: Worst Poss. Pain (n=98) ; 2nd Visit: MissingBL: Missing (n=45); 2nd Visit: Mild PainBL: Missing (n=45) ; 2nd Visit: Moderate PainBL: Missing (n=45) ; 2nd Visit: Severe PainBL: Missing (n=45) ; 2nd Visit: Worst Poss. PainBL: Missing (n=45); 2nd Visit: Missing
Pregabalin22000330011520333485335904518492515313038

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Patient's Clinical Global Impression (CGI) of Treatment Satisfaction at the Second and Final Visits

Patient's Clinical Global Impression of treatment satisfaction. Treatment satisfaction item of CGI has a scale of five discrete points: excellent, very good, good, fair and poor. Shift table shows the number of subjects with each score point rating at the Final Visit by the number of subjects with each score point rating at the Second Visit. (NCT00892008)
Timeframe: Second Visit (Week ≥ 2), Final Visit (Week 4)

Interventionparticipants (Number)
2nd Visit: Excellent (n=260); Final Vst: Excell2nd Visit: Excell (n=260) ; Final Vst:Very Good2nd Visit: Excellent (n=260); Final Visit: Good2nd Visit: Excellent (n=260) ; Final Visit: Fair2nd Visit: Excellent (n=260) ; Final Visit: Poor2nd Visit: Excellent (n=260); Final Visit: Missing2nd Visit: Very Good (n=778); Final Visit: Excell2nd Visit: Very Good (n=778); Final Vst: Very Good2nd Visit: Very Good (n=778); Final Visit: Good2nd Visit: Very Good (n=778); Final Visit: Fair2nd Visit: Very Good (n=778); Final Visit: Poor2nd Visit: Very Good (n=778); Final Visit: Missing2nd Visit: Good (n=454); Final Visit: Excellent2nd Visit: Good (n=454); Final Visit: Very Good2nd Visit: Good (n=454); Final Visit: Good2nd Visit: Good (n=454); Final Visit: Fair2nd Visit: Good (n=454); Final Visit: Poor2nd Visit: Good (n=454); Final Visit: Missing2nd Visit: Fair (n=81); Final Visit: Excellent2nd Visit: Fair (n=81); Final Visit: Very Good2nd Visit: Fair (n=81); Final Visit:: Good2nd Visit: Fair (n=81); Final Visit: Fair2nd Visit: Fair (n=81); Final Visit: Poor2nd Visit: Fair (n=81); Final Visit: Missing2nd Visit: Poor (n=12); Final Visit: Excellent2nd Visit: Poor (n=12); Final Visit: Very Good2nd Visit: Poor (n=12); Final Visit: Good2nd Visit: Poor (n=12); Final Visit: Fair2nd Visit::Poor (n=12); Final Visit: Poor2nd Visit: Poor (n=12); Final Visit: Missing2nd Visit: Missing (n=18); Final Visit: Excellent2nd Visit: Missing (n=18); Final Visit: Very Good2nd Visit: Missing (n=18); Final Visit: Good2nd Visit: Missing (n=18); Final Visit: Fair2nd Visit: Missing (n=18); Final Visit: Poor2nd Visit: Missing (n=18); Final Visit: Missing
Pregabalin2011110047297394131073352631304022923319181222230201015

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Physician's Clinical Global Impression (CGI) of Efficacy at Second and Final Visit

Physician's Clinical Global Impression of efficacy. Efficacy item of the CGI has a scale of five discrete points: excellent, very good, good, fair and poor. Shift table shows the number of subjects with each score point rating at the Final Visit by the number of subjects with each score point rating at the Second Visit. (NCT00892008)
Timeframe: Second Visit (Week ≥ 2), Final Visit (Week 4)

Interventionparticipants (Number)
2nd Visit: Excellent (n=279); Final Visit: Excell2nd Visit: Excellent (n=279); Final Vst: Very Good2nd Visit: Excellent (n=279); Final Visit: Good2nd Visit: Excellent (n=279); Final Visit: Fair2nd Visit: Excellent (n=279); Final Visit: Poor2nd Visit: Excellent (n=279); Final Visit: Missing2nd Visit: Very Good (n=813); Final Visit: Excell2nd Visit: Very Good (n=813); Final Vst: Very Good2nd Visit: Very Good (n=813); Final Visit: Good2nd Visit: Very Good (n=813); Final Visit: Fair2nd Visit: Very Good (n=813); Final Visit: Poor2nd Visit: Very Good (n=813); Final Visit: Missing2nd Visit: Good (n=418); Final Visit: Excellent2nd Visit: Good (n=418); Final Visit: Very Good2nd Visit: Good (n=418); Final Visit: Good2nd Visit: Good (n=418); Final Visit: Fair2nd Visit: Good (n=418); Final Visit: Poor2nd Visit: Good (n=418); Final Visit: Missing2nd Visit: Fair (n=66); Final Visit: Excellent2nd Visit: Fair (n=66); Final Visit: Very Good2nd Visit: Fair (n=66); Final Visit: Good2nd Visit: Fair (n=66); Final Visit: Fair2nd Visit: Fair (n=66); Final Visit: Poor2nd Visit: Fair (n=66); Final Visit: Missing2nd Visit: Poor (n=7); Final Visit: Excellent2nd Visit: Poor (n=7); Final Visit: Very Good2nd Visit: Poor (n=7); Final Visit: Good2nd Visit: Poor (n=7); Final Visit: Fair2nd Visit: Poor (n=7); Final Visit: Poor2nd Visit: Poor (n=7); Final Visit: Missing2nd Visit: Missing (n=20); Final Visit: Excellent2nd Visit: Missing (n=20); Final Visit: Very Good2nd Visit: Missing (n=20); Final Visit: Good2nd Visit: Missing (n=20); Final Visit: Fair2nd Visit: Missing (n=20); Final Visit: Poor2nd Visit: Missing (n=20); Final Visit: Missing
Pregabalin217810053298437100068192581155021420285270220120100019

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Number of Participants With Rescue Medication Usage

Rescue medications were used for participants with moderate or severe resting pain. Fentanyl injection (25 microgram [mcg] intravenous bolus to a maximum dose of 3 milliliter/day), paracetamol tablet (15 milligram/kilogram orally to a maximum dose of 45 milligram/kilogram/day) were used as rescue medications. (NCT00905437)
Timeframe: Day 0 to Day 6 post-surgery

Interventionparticipants (Number)
Pregabalin17
Placebo25

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Mean Anxiety Visual Analogue Scale (A-VAS)

Mean anxiety visual analogue scale (VAS) was defined as the mean of VAS score on the day of surgery and over Days 1 to 5 post-surgery. Participants measured their degree of anxiety over past 24 hours on a VAS of 0 to 100, where 0 = not at all anxious to 100 = extremely anxious. (NCT00905437)
Timeframe: Day 0 to Day 5 post-surgery

InterventionUnits on a scale (Mean)
Pregabalin23.3
Placebo24.7

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Time to Mobilization After Surgery

Participant was encouraged each day (from Day 3) to attempt walking depending upon the degree of pain on standing. The first day on which the participant was able to walk for 5 steps was the day of mobilization. Median time to mobilization (in hours) was calculated till the day of mobilization. (NCT00905437)
Timeframe: Day 1 to Day 5 post-surgery

Interventionhours (Median)
Pregabalin72.500
Placebo52.417

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Mean Daily Pain Score

Mean daily pain score was defined as the mean of daily pain score over Days 1 to 7 and Days 8 to 14 post-surgery. Daily Pain Rating Scale (DPRS): participant rated 11-point Likert scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain. (NCT00905437)
Timeframe: Day 1 to Day 7, Day 8 to Day 14 post-surgery

,
InterventionUnits on a scale (Mean)
Days 1 to 7 (n=27,30)Days 8 to 14 (n=26,27)
Placebo2.61.4
Pregabalin2.61.8

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Mean Daily Sleep Interference Score

Mean daily sleep interference score was defined as the mean of daily sleep interference numeric rating scale (NRS) score over Days 1 to 5 post-surgery. Daily Sleep Interference Scale (DSIS): participant rated pain during past 24-hour period on NRS ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep). Higher score indicates a greater level of sleep disturbance. Self-assessment performed daily on awakening prior to taking study medication. (NCT00905437)
Timeframe: Day 1 to Day 5 post-surgery

InterventionUnits on a scale (Mean)
Pregabalin2.6
Placebo3.1

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Mean Pain on Movement Score

Mean pain on movement score was defined as the mean of the pain on movement score over Days 1 to 5 post-surgery. Pain experienced by participant during passive flexion through 90 degree and passive abduction through 30 degree at operated hip joint was evaluated on a scale of 0 to 10 where, 0= no pain and 10= worst possible pain. (NCT00905437)
Timeframe: Every 12 hours from Day 1 to Day 5 post-surgery

InterventionUnits on a scale (Mean)
Pregabalin4.0
Placebo3.9

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The Number of Participants With the Indicated Side Effects - Nausea & Vomiting, Sedation, Headache, Dizziness Etc.

Nausea and vomiting was graded on a four-point scale, where 0 = no nausea, 1 = mild nausea, 2 = severe nausea requiring antiemetics, and 3 = retching and/ or vomiting. Grades 3 and 4 were grouped together as postoperative nausea and vomiting (PONV) and rescue anti-emetic, metoclopramide 10 mg i.v. was given. We asked patients about sedation, headache, dizziness, blurred vision. (NCT00905580)
Timeframe: 1, 6, 24 & 48 hours

,
Interventionparticipants (Number)
PONVheadachedizzinesssedationblurred vision
Placebo1011610
Pregabalin781463

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Pain Scores (VNRS) at 1, 6, 24, 48 Hours Postoperatively.

Pain was evaluated using an 11-point verbal numerical rating scale (VNRS). Patients were instructed preoperatively to express their pain on the 0-10 VNRS, where 0 means no pain at all, and 10 represents the worst pain imaginable (NCT00905580)
Timeframe: 1, 6, 24 & 48 hours

,
InterventionVNRS (Median)
1 Hour6 Hour24 Hour48 Hour
Placebo6322
Pregabalin6211

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Number of Patients With Hypoesthesia in the Anterior Chest at 3 Months After Operation.

we checked Hypoesthesia in the anterior chest at 3 months after operation by phone. (NCT00905580)
Timeframe: 3 months

Interventionparticipants (Number)
Placebo13
Pregabalin10

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Number of Patients Who Required Additional Analgesics During the First 48 Hours Postoperatively

(NCT00905580)
Timeframe: 1, 6, 24 & 48 hours

,
Interventionparticipants (Number)
0-1 hour1-6 hour6 - 24 hour24 - 48 hour
Placebo3117157
Pregabalin26721

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Patient's Global Impression of Change at 3 Weeks

"Global impression of change in patient status reported at 3 weeks. The global impression of change consists of a Likert scale as below:~Very Much Improved~Much Improved~Minimally Improved~No Change~Minimally Worse~Much Worse~Very Much Worse" (NCT00908375)
Timeframe: 3 weeks

Interventionunits on a scale (Median)
Pregabalin3.5
Sugar Pill3

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Pain Scores (NRS) at 3-weeks

"Standard numeric rating pain scale ranging from 0 (no pain) to 10 (worst pain imaginable) after 3 weeks of treatment.~." (NCT00908375)
Timeframe: 3 weeks

Interventionunits on a scale (Median)
Pregabalin6
Sugar Pill3

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Oswestry Disability Questionnaires

"Oswestry disability index (ODI) is a tool to measure a subject's functional disability. The Oswestry disability index consists of 10 questions with a Likert 0-5 scale. Each individual score is converted into a percent which represents the percent disability. There are five tiers, 0-20% (minimal disability), 21%-40% (moderate disability), 41%-60% (severe disability), 61%-80% (crippled), 81%-100% (i.e. bed bound). We report the Oswestry disability scores at 3 weeks." (NCT00908375)
Timeframe: 3 weeks

Interventionpercent disability (Median)
Pregabalin41
Sugar Pill20

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Number of Participants With Change in Clinical Global Impression of Severity (CGI-C) From Baseline at Final Visit

"The CGI-C scale measures a physician's global impression of a participant's clinical condition at final visit in terms of change relative to the start of treatment (CGI-C).~At final visit, the participants CGI-C will be categorized into a three point scale as: improvement: CGI response of very much improved, much improved or minimally improved; no change: CGI response of no change; worsening: CGI response of very much worse, much worse or minimally worse." (NCT00922987)
Timeframe: Week 16 or ET

InterventionParticipants (Number)
Not AssessedVery much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Pregabalin0481455029010

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Number of Participants With no Seizures (Partial or Other) During the Last 4 Weeks in the Study

Participants were regarded as seizure-free if no seizures (partial or other) were reported for the participant during the last 4 weeks in the study. (NCT00922987)
Timeframe: Week 4 through week 16 or ET

InterventionParticipants (Number)
Pregabalin172

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Percentage Change From Baseline in 28 Day Partial Seizure Frequency at Final Visit

The partial seizure frequency for the baseline period was the total number of partial seizures recorded for that period at Visit 0 (week 0). For each participant's final visit, the 28 day partial seizure frequency equals total number of partial seizures since the last visit * 28 divided by total number of days since the last visit. For percent change from baseline: change from baseline in partial seizure frequency*100 divided by partial seizure frequency at baseline visit. (NCT00922987)
Timeframe: Baseline and week 16 or ET

Interventionpercent change (Median)
Pregabalin-100.00

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Percentage of Participants With a 50 Percent or Greater Reduction From Baseline in 28 Day Partial Seizure Frequency

Responder rate was defined as the percentage of participants with at least a 50% reduction in 28-day partial seizure frequency from baseline during the maintenance phase (Week 4 - Week 16). The percent change in partial seizure frequency in the maintenance phase was the change from baseline in partial seizure frequency * 100, divided by the partial seizure frequency at the baseline visit. (NCT00922987)
Timeframe: Baseline through week 16 or early termination (ET)

InterventionPercentage of participants (Number)
Pregabalin85.00

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Change From Baseline in Medical Outcome Study (MOS) Sleep Scale Sub-scores at Week 16 or ET

MOS: participant rated questionnaire, assess sleep quality and quantity. Consists of 9-item overall sleep problems index (length of time to fall asleep, how many hours of sleep each night during past 4 weeks); 7 subscales rated 1 (all the time) to 6 (none of the time): sleep disturbance, snoring, awaken short of breath (SOB) or with a headache, somnolence adequacy, and sleep quantity. Transformed scores (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); sub-scales total score range= 0-100; higher score indicates greater intensity of attribute. (NCT00922987)
Timeframe: Baseline and week 16 or ET

InterventionUnits on a scale (Mean)
Baseline: Sleep Problems Index IBaseline: Sleep Problems Index IIBaseline: Sleep DisturbanceBaseline: SnoringBaseline: Awaken Short of BreathBaseline: Quantity of Sleep (hours)Baseline: Sleep AdequacyBaseline: SomnolenceChange at Week 16: Sleep Problems Index IChange at Week 16: Sleep Problems Index IIChange at Week 16: Sleep DisturbanceChange at Week 16: SnoringChange at Week 16: Awaken Short of BreathChange at Week 16: Quantity of Sleep (hours)Change at Week 16: Sleep AdequacyChange at Week 16: Somnolence
Pregabalin44.7244.5544.3133.7134.416.7745.5037.19-16.93-19.44-25.04-10.14-16.550.929.27-17.72

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Number of Participants With Categorical Scores on Clinical Global Impression of Severity (CGI-S)

CGI-S: 7-point clinician rated scale to assess severity of participant's current illness state; range: 1 (normal - not ill at all) to 7 (among the most extremely ill patients). Higher score = more affected. (NCT00922987)
Timeframe: Baseline

Interventionparticipants (Number)
Not AssessedNormal, not at all illBorderline illMildly illModerately illMarkedly illSeverely illAmong the most extremely ill participants
Pregabalin01725641183285

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Number of Participants With Concomitant Co-morbidities

Participants who had a concomitant co-morbidity during the study for any period of time from baseline through to Week 16 (Final Visit); participants with more than one concomitant co-morbidity were counted for each of the co-morbidity classes applicable. (NCT00922987)
Timeframe: Baseline through week 16 or ET

Interventionparticipants (Number)
AnaemiaThrombocytopeniaCardiomyopathyCoronary artery diseaseMyocardial ischaemiaSturge-Weber syndromeDeafnessHypoacusisVertigoAutoimmune thyroiditisEndocrine disorderGoitreHypothyroidismReflux oesophagitisHepatic fibrosisLiver disorderMultiple allergiesSeasonal allergyNeuroborreliosisInjuryDiabetes mellitusHyperlipidemiaObesityType 1 diabetes mellitusType 2 diabetes mellitusMucoskeletal painOsteoarthritisOsteoporosisSpinal disorderBrain neoplasm malignantOligodendrogliomaCerebral ischaemiaCerebrovascular accidentDementia Alzheimer's typeDizzinessEncephalopathyGrand mal convulsionHeadacheHemiparesisMental retardationMigraineMigraine without auraNeuropathy peripheralPolyneuropathyAnxietyAnxiety disorderDepressionGeneralised anxiety disorderPost-traumatic stress disorderPsychotic disorder due to medical conditionSchizophreniaDiabetic neuropathyNephropathyAsthmaChronic obstructive pulmonary diseaseHypertensionPost thrombotic syndrome
Pregabalin11134111111111141111621111322112111111131111611111421112281

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Number of Participants With Concomitant Drug Treatments

Concomitant drug (any drug other than, and in addition to, the study drug) taken for any period of time during the study. (NCT00922987)
Timeframe: Baseline through Week 16 or ET

Interventionparticipants (Number)
Acetylsalicylic acidAll other therapeutic productsAllopurinolAlprazolamAminophyllineAmlodipineAmlodipine BesilateAsasantinAtenololAtorvastatinBaclofenBetahistineBetahistine hydrochlorideBetaxolol hydrochlorideBiselectBisoprololCarbamazepineCitalopramClonazepamClopidogrelClopidogrel sulfateCoversum combiDesloratadineDiazepamDiclofenacDigoxinDrug unspecifiedErgenyl chronoEscitalopramFenofibrateFentanylFluphenazine decanoateFolic acidFurosemideGabapentinGingko bilobaGingko biloba extractGliclazideHyzaarIbuprofenImidapril hydrochlorideInsulinIpratropium bromideLacosamideLamotrigineLevetiracetamLevothyroxine sodiumMagnesiumMetamizole sodiumMetformin hydrochlorideMolsidomineOxazepamOxcarbazepineParacetamolPentoxifyllinePerindoprilPerindopril argininePhenobarbitalPhenytoinPiracetamPregabalinPrimidoneRamiprilSeretide miteSertralineSilymarinSultiameTelmisartanTheophyllineThioctic acidTianeptineTiaprideTiclopidineTiclopidine hydrochlorideTocopherolTopiramateTramadolTrandolaprilTrazodone hydrochlorideValproate sodiumValproic acidVenlafaxineVenlafaxine hydrochlorideVerapamil hydrochlorideVinpocetineWarfarin sodium
Pregabalin8114131212111122114182111221427311111215111131354301112111111111116661213111121211234131235511121

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Change From Baseline in Visual Analog Scale of Anxiety (VAS-A) Scores at Week 4 and Final Visit

VAS-A consists of a visual analog scale ranging from, 0 mm (no anxiety) to 100 mm (extreme anxiety). (NCT00922987)
Timeframe: Baseline, week 4 and week 16 or ET

Interventionmillimeter (mm) (Mean)
BaselineChange at Week 4Change at Week 16 or ET
Pregabalin54.12-13.60-26.16

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Change From Baseline in Drinking Quantity and Frequency Using Drinks Per Drinking Day at Week 12

Standard drinks are equivalent to 14 grams of pure alcohol and number of drinks are assessed with Timeline Follow-Back (TLFB) methods. A drinking day is a day where any alcohol is consumed. Change = (Week 12 - Baseline). More negative values indicate less use of alcohol. (NCT00929344)
Timeframe: Baseline and Week 12

,,
Interventiondrinks/drinking day (Mean)
Drinks/Drinking Day BaselineDrinks/Drinking Day Week 12Drinks/Drinking Day Change
Duloxetine8.162.21-5.94
Placebo8.912.90-6.01
Pregabalin12.982.31-10.67

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Change From Baseline in Drinking Quantity and Frequency Using Drinks Per Week at Week 12

Standard drinks are equivalent to 14 grams of pure alcohol and number of drinks are assessed with Timeline Follow-Back (TLFB) methods. Change = (Week 12 - Baseline). More negative values indicate less use of alcohol. (NCT00929344)
Timeframe: Baseline and Week 12

,,
Interventiondrinks/week (Mean)
Drinks/week BaselineDrinks/week Week 12Drinks/week Change
Duloxetine42.079.16-32.91
Placebo41.208.06-33.15
Pregabalin56.677.59-49.08

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Change From Baseline in Drinking Quantity and Frequency Using Drinking Days Per Week at Week 12

Standard drinks are equivalent to 14 grams of pure alcohol and number of drinks are assessed with Timeline Follow-Back (TLFB) methods. A drinking day is a day where any alcohol is consumed. Change = (Week 12 - Baseline). More negative values indicate less use of alcohol. (NCT00929344)
Timeframe: Baseline and Week 12

,,
Interventiondrinking days/week (Mean)
Drinking Days/Week BaselineDrinking Days/Week Week 12Drinking Days/Week Change
Duloxetine5.112.17-2.94
Placebo4.871.85-3.01
Pregabalin4.541.14-3.40

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Number of Participants With the Indicated Side Effects - Nausea & Vomiting, Sedation, Headache, Dizziness Etc.

Nausea and vomiting was graded on a four-point scale, where 0 = no nausea, 1 = mild nausea, 2 = severe nausea requiring antiemetics, and 3 = retching and/ or vomiting. Grades 3 and 4 were grouped together as postoperative nausea and vomiting (PONV) and rescue anti-emetic, metoclopramide 10 mg i.v. was given. (NCT00938548)
Timeframe: 1, 6, 24, 48 hour

,
Interventionparticipants (Number)
PONVsedationheadachedizziness
Placebo48912
Pregabalin313517

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Pain Scores (Verbal Numerical Rating Scale;VNRS) During Postoperative Hours.

Pain was evaluated using an 11-point verbal numerical rating scale (VNRS). Patients were instructed preoperatively to express their pain on the 0-10 VNRS, where 0 represents no pain at all and 10 represents the worst pain imaginable. (NCT00938548)
Timeframe: 1, 6, 24, 48 hour

,
InterventionUnits on a scale (Median)
1 hr6 hr24 hr48 hr
Placebo7653
Pregabalin5532

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Pain Scores (VNRS) at 1 Week and 1 Month After Operation

Pain was evaluated using an 11-point verbal numerical rating scale (VNRS). Patients were instructed preoperatively to express their pain on the 0-10 VNRS, where 0 represents no pain at all and 10 represents the worst pain imaginable. (NCT00938548)
Timeframe: 1 week, 1 month

,
InterventionUnits on a scale (Mean)
1 week1 month
Placebo2.91.7
Pregabalin1.40.6

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Mean Diarrhea BSS Score Over the Last 4 Weeks of the Study (Weeks 9-12)

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: Weeks 9-12

Interventionunits on a scale (Mean)
Pregabalin16.9
Placebo31.8

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Mean Overall Severity BSS Score at Week 12

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: Week 12

Interventionunits on a scale (Mean)
Pregabalin28.5
Placebo44.2

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Mean Overall Severity of Irritable Bowel Syndrome (IBS) Symptoms BSS Score Last 4 Weeks of the Study (Weeks 9-12)

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: weeks 9-12

Interventionunits on a scale (Mean)
Pregabalin26.5
Placebo42.2

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Mean Pain BSS Score at Week 12

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: Week 12

Interventionunits on a scale (Mean)
Pregabalin26.1
Placebo43.3

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Mean Pain Bowel Symptom Scale (BSS) Score Over Last 4 Weeks of Study (Weeks 9-12)

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: weeks 9-12

Interventionunits on a scale (Mean)
Pregabalin25.3
Placebo42.0

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Number of Subjects With Adequate Relief of IBS Symptoms at Least 50% of the Last 4 Weeks of Therapy

"One of the weekly questions asked of subjects was, Did you have adequate relief of your IBS symptoms over the last week? Possible answers were Yes or No." (NCT00977197)
Timeframe: Weeks 9-12

,
Interventionparticipants (Number)
Adequate Relief (Yes)Inadequate Relief (No)
Placebo1628
Pregabalin1922

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Number of Subjects With Greater Than or Equal to a 30 Point Change in Pain BSS Score

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: baseline, week 12

,
Interventionparticipants (Number)
Yes, >= 30 point changeNo, >= 30 point change
Placebo2024
Pregabalin2615

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Mean Bloating BSS Score at Week 12

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: Week 12

Interventionunits on a scale (Mean)
Pregabalin26.3
Placebo45.0

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Mean Bloating BSS Score Over the Last 4 Weeks of the Study (Weeks 9-12)

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: Weeks 9-12)

Interventionunits on a scale (Mean)
Pregabalin29.3
Placebo43.6

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Mean Constipation BSS Score at Week 12

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: Week 12

Interventionunits on a scale (Mean)
Pregabalin26.1
Placebo23.6

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Mean Constipation BSS Score Over Last 4 Weeks of Study (Weeks 9-12)

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: Weeks 9-12

Interventionunits on a scale (Mean)
Pregabalin25.8
Placebo22.4

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Mean Diarrhea BSS Score at Week 12

The Bowel Symptom Scale (BSS) consists of 5 questions, each with a 100 mm long Visual Analog Scale (VAS). The questions are regarding pain, bloating, constipation, diarrhea, and overall severity of Irritable Bowel Syndrome (IBS) symptoms. The VAS does not have any pre-set marks between the extremes of 0 for not present and 100 mm for very severe symptoms. The investigator measures the mark made by the participant in mm and records this for the value. (NCT00977197)
Timeframe: Week 12

Interventionunits on a scale (Mean)
Pregabalin15.6
Placebo34.4

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Dynamic Allodynia Pain Score

Five strokes (each approx. 6 centimeters [cm] long) were applied with a standardized brush (SENSELab Brush 05) across the painful site (and a control site) at a constant velocity (20 millimeters per second [mm/sec]). Pain in response to brush stimulation of the allodynic area was recorded using an 11-point numeric rating scale from 0 (no pain) to 10 (worst possible pain). Patients were asked to give a pain rating after each brush stroke. A painful sensation was considered as representing brush allodynia. (NCT00978341)
Timeframe: Screening, Days 1 & 8: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, and 6 hours post-dose

,
Interventionscores on scale (Mean)
Day 1: pre-dose (n=14, 13)Day 1: 0.5 hours post-dose (n=10, 8)Day 1: 1 hour post-dose (n=10, 8)Day 1: 2 hours post-dose (n=10, 8)Day 1: 3 hours post-dose (n=10, 8)Day 1: 4 hours post-dose (n=15, 13)Day 1: 5 hours post-dose (n=10, 8)Day 1: 6 hours post-dose (n=10, 8)Day 8: pre-dose (n=11, 12)Day 8: 0.5 hours post-dose (n=7, 8)Day 8: 1 hour post-dose (n=7, 8)Day 8: 2 hours post-dose (n=7, 8)Day 8: 3 hours post-dose (n=9, 8)Day 8: 4 hours post-dose (n=14, 13)Day 8: 5 hours post-dose (n=9, 8)Day 8: 6 hours post-dose (n=9, 8)
Placebo2.11.91.81.72.31.21.91.92.01.71.41.51.60.91.51.5
Pregabalin2.22.82.32.52.31.52.22.11.91.71.61.91.71.01.91.9

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Mechanical Pain Sensitivity Stimulus-Response Function

Mechanical pain sensitivity stimulus response function was assessed at the control and painful sites using calibrated von Frey monofilaments and the SENSElab brush. Seven different von Frey monofilaments (8 -512 milliNewtons [mN], force increases by a factor of two from filament to filament) and the brush were applied in a predetermined pseudo-random order. Pain rating for each stimulus: 11-point numeric rating scale (NRS) ranging from 0 (no pain) to 10 (worst possible pain). (NCT00978341)
Timeframe: Screening, Days 1 & 8: 0 (pre-dose), & 2, 4, and 6 hours post-dose

,
Interventionscores on scale (Mean)
Day 1: pre-dose (n=14, 14)Day 1: 2 hours post-dose (n=14, 14)Day 1: 4 hours post-dose (n=14, 14)Day 1: 6 hours post-dose (n=14, 14)Day 8: pre-dose (n=13, 14)Day 8: 2 hours post-dose (=13, 14)Day 8: 4 hours post-dose (n=15, 13)Day 8: 6 hours post-dose (n=15, 13)
Placebo0.90.80.80.90.80.80.70.7
Pregabalin0.80.70.70.80.70.70.70.8

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Neuropathic Pain Symptom Inventory (NPSI)

NPSI: subject rated questionnaire to evaluate 5 dimensions of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia). Includes 10 descriptors ranging from 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. Questionnaire generates a score in each relevant dimension. Total score is calculated as the sum of scores of the 10 descriptors, range: 0-100. Higher score indicates greater intensity of pain. (NCT00978341)
Timeframe: Prior to morning dosing on Day 1 and prior to discharge on Day 8 for each period.

,
Interventionscores on scale (Median)
Category 1 Day 1 (n=15, 14)Category 1: Day 8 (n=12, 11)Category 2: Day 1 (n=15, 14)Category 2: Day 8 (n=12, 11)Category 3: Day 1 (n=15, 14)Category 3: Day 8 (n=12, 11)Category 4: Day 1 (n=15, 14)Category 4: Day 8 (n=12, 11)Category 5: Day 1 (n=15, 14)Category 5: Day 8 (n=12, 11)Total: Day 1 (n=15, 14)Total: Day 8 (n=12, 11)
Placebo6.06.02.53.03.32.00.30.05.05.02724
Pregabalin6.05.53.02.51.51.81.72.75.03.53222

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Present Pain Intensity Score

Present pain intensity score: 0-10 numeric rating scale (NRS), 0 (no pain) to 10 (worst possible pain). (NCT00978341)
Timeframe: Day 1: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, 6, 8, 10, and 12 hours (post-dose); Day 8: 0 (pre-dose), 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, and 48 hours (post-dose)

,
Interventionscores on scale (Mean)
Day 1: pre-dose (n=15, 14)Day 1: 0.5 hours post-dose (n=15, 14)Day 1: 1 hours post-dose (n=15, 14)Day 1: 2 hours post-dose (n=15, 14)Day 1: 3 hours post-dose (n=15, 14)Day 1: 4 hours post-dose (n=15, 14)Day 1: 5 hours post-dose (n=15, 14)Day 1: 6 hours post-dose (n=15, 14)Day 1: 8 hours post-dose (n=15, 14)Day 1: 10 hours post-dose (n=14, 14)Day 1: 12 hours post-dose (n=14, 14)Day 8: pre-dose (n=13, 14)Day 8: 0.5 hours post-dose (n=13, 14)Day 8: 1 hour post-dose (n=13, 14)Day 8: 2 hours post-dose (n=13, 14)Day 8: 3 hours post-dose (n=15, 14)Day 8: 4 hours post-dose (n=15, 14)Day 8: 5 hours post-dose (n=15, 14)Day 8: 6 hours post-dose (n=15, 14)Day 8: 8 hours post-dose (n=15, 13)Day 8: 10 hours post-dose (n=15, 13)Day 8: 12 hours post-dose (n=15, 13)Day 8: 24 hours post-dose (n=15, 14)Day 8: 36 hours post-dose (n=15, 13)Day 8: 48 hours post-dose (n=15, 14)
Placebo4.94.64.74.74.74.64.95.15.15.35.45.45.04.94.64.74.94.95.25.35.25.25.45.75.8
Pregabalin5.35.14.64.34.34.13.93.94.34.14.14.74.54.04.64.94.94.84.44.74.94.75.06.16.1

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Punctate Allodynia Area

Area of punctate allodynia was determined using a von Frey filament (OptiHair2). Stimulation was started from the non-painful perimetry and repeated along a pattern of 8 radial spokes. With a movement along each spoke at steps of 5 millimeters (mm), the subjects reported sensation changes from non-painful to painful and the spot was marked on the skin. The area of punctate allodynia was determined from these 8 distances by calculating the area of an octagon (in square centimeter(s)[cm2]). (NCT00978341)
Timeframe: Screening, Days 1 & 8: 0 (pre-dose) and 4 hours post-dose

,
Interventioncm2 (Mean)
Day 1: pre-dose (n=15, 14)Day 1: 4 hours post-dose (n=15, 13)Day 8: pre-dose (n=13, 14)Day 8: 4 hours post-dose (n=15, 13)
Placebo65.154.145.946.7
Pregabalin75.668.753.170.8

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Daily Pain Score

Daily Pain Score: Day 1 pain intensity over past 24 hours recorded on waking every morning. 0-10 numeric rating scale (NRS): 0 (no pain) to 10 (worst possible pain). (NCT00978341)
Timeframe: Predose: Daily from 7 days before Visit 2 (start of Intervention 1) until the morning of Visit 5 (end of Intervention 2)

,
Interventionscores on scale (Mean)
Day 1 (n=15, 13)Day 2 (n=15, 14)Day 3 (n=15, 14)Day 4 (n=15, 14)Day 5 (n= 15, 14)Day 6 (n=15, 14)Day 7 (n=15, 14)Day 8 (n=14, 14)
Placebo6.35.45.15.05.14.94.95.6
Pregabalin6.24.44.14.24.53.74.04.0

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Dynamic Allodynia Area

Area of dynamic allodynia was assessed using a brush (SENSElab Brush 05; velocity approximately 20 millimeters per second [mm/s]) by stimulating along a pattern of 8 radial spokes. Stimulation was started from the non-painful perimetry. Subjects were asked to report change in sensation from non-painful to painful and the spot was marked onto the skin. The area of dynamic allodynia was determined from these 8 distances by calculating the area of an octagon (in centimeter squared [cm2]). (NCT00978341)
Timeframe: Screening, Days 1 & 8: 0 (pre-dose) & 4 hours post-dose,

,
Interventioncm2 (Mean)
Day 1: pre-dose (n=14, 14)Day 1: 4 hours post-dose (n=15, 13)Day 8: pre-dose (n=12, 14)Day 8: 4 hours post-dose (n=15, 13)
Placebo81.650.968.468.0
Pregabalin95.863.048.450.5

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Latency to Stage R Sleep (LREM)

LREM, as determined by PSG, was number of non-wake epochs from the beginning of the recording to the first occurrence of Stage R sleep divided by 2. Arithmetic mean of LREM of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg95.22
Pramipexole 0.5 mg130.99
Placebo84.52

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Number of Arousals (NASO)

NASO, as determined by PSG, was calculated as number of times there is a shift from a stage N2 to N3 or R 30-sec epoch to a stage N1 30-sec epoch from the onset of persistent sleep to light on. The sum of 2 consecutive days of recording was divided by 2 at the end of each intervention period. Arithmetic mean of NASO of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionarousals (Least Squares Mean)
Pregabalin 300 mg17.84
Pramipexole 0.5 mg24.19
Placebo20.29

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Number of Awakenings of at Least 1 Epoch After Sleep Onset (NAASO1)

NAASO1, as determined by PSG, was the number of times there was a wake period of at least 1 epoch from the onset of persistent sleep to light on. Each entry to be counted must be separated by a Stage 2 Non-REM [Stage N2] 30-second (30-sec) epoch, Stage 3 Non-REM [Stage N3] 30-sec epoch, or stage rapid eye movement [stage R] 30-sec epoch. The sum of 2 consecutive days of recording was divided by 2 at the end of each intervention period. Arithmetic mean of NAASO1 of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionawakenings (Least Squares Mean)
Pregabalin 300 mg18.43
Pramipexole 0.5 mg26.30
Placebo21.10

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Number of Awakenings of at Least 2 Epochs After Sleep Onset (NAASO2)

NAASO2, as determined by PSG, was the number of times there was a wake period of at least 2 30-sec epochs from the onset of persistent sleep to light on. Each entry to be counted must be separated by a Stage N2 30-sec epoch, Stage N3 30-sec epoch, or Stage R 30-sec epoch. The sum of 2 consecutive days of recording was divided by 2 at the end of each intervention period. Arithmetic mean of NAASO2 of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionawakenings (Least Squares Mean)
Pregabalin 300 mg7.68
Pramipexole 0.5 mg12.39
Placebo10.55

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Percentage of Participants With Response to Clinical Global Impression - Improvement (CGI-I) Scale

CGI-I: 7-point clinician rated scale to assess improvement in disease condition as compared to the start of the study medication (baseline), ranging from 1 (very much improved) to 7 (very much worse). Improvement is defined as a score of 1 (very much improved) or 2 (much improved). Higher score = more affected. (NCT00991276)
Timeframe: Baseline, Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionpercentage of participants (Number)
Pregabalin 300 mg61.2
Pramipexole 0.5 mg50.0
Placebo33.3

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Periodic Limb Movement Arousal Index (PLMAI)

PLMAI, as determined by PSG was number of periodic limb movements leading to arousal per hour (per hour of Total Sleep Time [TST]). Arithmetic mean of PLMAI of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionmovement/hour (Least Squares Mean)
Pregabalin 300 mg3.93
Pramipexole 0.5 mg2.66
Placebo7.61

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Periodic Limb Movement Index (PLMI)

PLMI, as determined by PSG was number of periodic limb movements per hour based on time in bed (TIB). Arithmetic mean of PLMI of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionmovement/hour (Least Squares Mean)
Pregabalin 300 mg25.45
Pramipexole 0.5 mg14.11
Placebo39.95

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Periodic Limb Movement in Sleep Index (PLMSI)

PLMSI, as determined by PSG was number of periodic limb movements in sleep per hour based on TST. Arithmetic mean of PLMSI of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionmovement/hour (Least Squares Mean)
Pregabalin 300 mg22.42
Pramipexole 0.5 mg8.00
Placebo36.95

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Restless Leg Syndrome - Quality of Life Scale (RLS-QoL)

RLS-QoL: psychometrically and clinically valid and reliable participant-rated instrument, assesses impact of RLS on participant quality of life. Specifically, it assessed effects of RLS on health status function (symptom severity, daily activity, social functioning, sleep, concentrating and decision making, travelling, sexual activity, and work) giving a summary score ranging from 0-100. Higher scores reflect better quality of life. Recall period: 1 week prior to assessment. Arithmetic mean of RLS-QoL score of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionunits on a scale (Least Squares Mean)
Pregabalin 300 mg73.30
Pramipexole 0.5 mg70.05
Placebo68.03

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Restless Legs Syndrome-Next Day Impact (RLS-NDI)

RLS-NDI:participant-rated instrument to assess daytime performance and participant's previous night's sleep, consists of 14 items encompassing 5 domains:tiredness;emotional functioning;social functioning;cognitive functioning;activities of daily living and 1 global item for overall well-being. Each item: 0-10 scale; 0=Not at all; 10=Extremely. Total score: sum of scores from question 1-14 (question 10, 11: scores reversed). Total score range: 0-140; higher scores: more severe impact. Arithmetic mean of RLS-NDI of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 3 and Week 5 of Each Intervention Period or ET

Interventionunits on a scale (Least Squares Mean)
Pregabalin 300 mg41.43
Pramipexole 0.5 mg46.33
Placebo46.78

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Sleep Efficiency (SE)

SE, as determined by PSG, was the TST divided by the time in bed (TIB)(both in minutes), multiplied by 100. Sum of 2 consecutive days of recording divided by 2 at the end of each intervention period. Arithmetic mean of SE of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

InterventionPercentage of time asleep (Least Squares Mean)
Pregabalin 300 mg83.81
Pramipexole 0.5 mg78.58
Placebo77.02

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Subjective Sleep Questionnaire (SSQ): Latency Subscale

SSQ: participant-rated instrument assesses sleep behavior; measures sleep quantity, quality. Comprised of 5 items giving 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, quality of sleep. Latency (time to fall asleep [in minutes]): numerical rating completed by participant 30 minutes after waking; recall period: night before. Range: 0 - 840 minutes, lower value: better sleep. Arithmetic mean of subscale score of each participant for all periods was taken prior to employing linear mixed model. Hours of sleep subscale results reported as sTST. (NCT00991276)
Timeframe: Week 3 and Week 5 of each intervention period or ET

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg42.49
Pramipexole 0.5 mg40.59
Placebo50.07

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Subjective Sleep Questionnaire (SSQ): Number of Awakenings Subscale

SSQ: participant-rated instrument to assess sleep behavior; measures sleep quantity, quality. Comprised of 5 items giving 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, quality of sleep. This (1 item) subscale: numerical rating completed by participant 30 minutes after waking; recall period: night before. Range: 0 awakenings to 30 awakenings. Lower value indicates better quality of sleep. Arithmetic mean of this subscale score of each participant for all periods was taken prior to employing linear mixed model. Results of hours of sleep subscale reported as sTST. (NCT00991276)
Timeframe: Week 3 and Week 5 of Each Intervention Period or ET

Interventionawakenings (Least Squares Mean)
Pregabalin 300 mg1.69
Pramipexole 0.5 mg2.64
Placebo2.51

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Subjective Sleep Questionnaire (SSQ): Quality of Sleep Subscale

SSQ: participant-rated instrument to assess sleep behavior; measures sleep quantity, quality. Comprised of 5 items yielding 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, quality of sleep. This 1 item subscale: numerical rating completed by participant 30 minutes after waking; recall period: night before, Range: 0 to 100, higher score: better quality of sleep. Arithmetic mean of this subscale score of each participant for all periods was taken prior to employing linear mixed model. Results of hours of sleep subscale reported as sTST. (NCT00991276)
Timeframe: Week 3 and Week 5 of each intervention period or ET

Interventionunits on a scale (Least Squares Mean)
Pregabalin 300 mg6.74
Pramipexole 0.5 mg5.69
Placebo5.70

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Subjective Sleep Questionnaire (SSQ): Total Wake Time After Sleep Onset Subscale

SSQ: participant-rated instrument to assess sleep behavior; measures sleep quantity, quality. Comprised of 5 items yielding 5 subscale scores: latency, hours of sleep, number of awakenings, total wake time after sleep onset, quality of sleep. This 1 item subscale (in minutes): numerical rating completed by participant 30 minutes after waking; recall period: night before. Range: 0-1440 minutes. Lower value: better sleep. Arithmetic mean of this subscale score of each participant for all periods was taken prior to employing linear mixed model. Results of hours of sleep subscale reported as sTST. (NCT00991276)
Timeframe: Week 3 and Week 5 of each intervention period or ET

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg53.78
Pramipexole 0.5 mg82.23
Placebo79.09

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Subjective Total Sleep Time (sTST)

sTST as derived from Subjective Sleep Questionnaire (SSQ), a participant reported subjective estimate of the total amount of time the participant was asleep after lights out until final awakening. Completed by the participant 30 minutes after waking; recall period is the night before. Arithmetic mean of sTST of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 3 and Week 5 of Each Intervention Period or ET

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg400.97
Pramipexole 0.5 mg374.19
Placebo370.16

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Total Sleep Time (TST)

TST, as determined by PSG, was the number of non-wake (30-sec) epochs from the beginning of recording to the end of the recording. TST was the sum of 2 consecutive days of recording divided by 2 at the end of each intervention period. Arithmetic mean of TST of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg402.38
Pramipexole 0.5 mg376.52
Placebo369.66

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Wake Time After Sleep (WTAS)

WTAS, as determined by PSG, was the number of wake (30-sec) epochs after the final awakening until the end of the 8-hour recording. WTAS was the sum of 2 consecutive days of recordings divided by 2 at the end of each intervention period. Arithmetic mean of WTAS of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg5.58
Pramipexole 0.5 mg7.86
Placebo8.88

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Wake Time During Sleep (WTDS)

WTDS, as determined by PSG, was the number of wake (30-sec) epochs after the onset of persistent sleep and prior to the final awakening or at the end of 8-hour recording. WTDS was the sum of 2 consecutive days of recordings divided by 2 at the end of each intervention period. Arithmetic mean of WTDS of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg45.77
Pramipexole 0.5 mg70.51
Placebo69.75

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Hourly and Quarterly Assessment of Number of Arousals (NASO)

NASO, as determined by PSG was the number of times there is a shift from a stage N2 to N3 or R 30-sec epoch to a stage N1 30-sec epoch from the onset of persistent sleep to light on. The sum of 2 consecutive days of recording was divided by 2 at the end of each intervention period by each individual hour (8 hours total) and each individual quarter of the night (eight hours in 2 hour increments). Arithmetic mean of NASO for each participant at each period was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

,,
Interventionarousals (Least Squares Mean)
Hour 1 (n= 66, 67, 66)Hour 2 (n= 67, 70, 66)Hour 3 (n= 67, 70, 67)Hour 4 (n= 67, 70, 68)Hour 5 (n= 67, 70, 68)Hour 6 (n= 67, 71, 68)Hour 7 (n= 67, 71, 68)Hour 8 (n= 67, 71, 68)Quarter 1 (n= 67, 70, 66)Quarter 2 (n= 67, 70, 68)Quarter 3 (n= 67, 71, 68)Quarter 4 (n= 67, 71, 68)
Placebo1.792.682.802.762.892.702.662.464.265.555.615.13
Pramipexole 0.5 mg2.063.233.233.413.203.303.282.985.096.676.446.24
Pregabalin 300 mg1.482.362.312.942.332.392.152.073.755.254.754.23

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Hourly and Quarterly Assessment of Number of Awakenings of at Least 1 Epoch After Sleep Onset (NAASO1)

NAASO1, as determined by PSG, was the number of times there was a wake period of at least 1 30-sec epoch from the onset of persistent sleep to light on. Each entry to be counted must be separated by a Stage N2 30-sec epoch, Stage N3 30-sec epoch, or Stage R 30-sec epoch. The sum of 2 consecutive days of recording was divided by 2 at the end of each intervention period by each individual hour (8 hours total) and each individual quarter of the night (eight hours in 2 hour increments). Arithmetic mean of NAASO1 of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

,,
Interventionawakenings (Least Squares Mean)
Hour 1 (n= 66, 67, 66)Hour 2 (n= 67, 70, 66)Hour 3 (n= 67, 70, 67)Hour 4 (n= 67, 70, 68)Hour 5 (n= 67, 70, 68)Hour 6 (n= 67, 71, 68)Hour 7 (n= 67, 71, 68)Hour 8 (n= 67, 71, 68)Quarter 1 (n= 67, 70, 66)Quarter 2 (n= 67, 70, 68)Quarter 3 (n= 67, 71, 68)Quarter 4 (n= 67, 71, 68)
Placebo1.102.472.662.712.873.163.323.113.495.326.046.44
Pramipexole 0.5 mg1.393.323.423.833.763.684.043.464.617.277.377.36
Pregabalin 300 mg0.702.062.092.442.472.913.072.762.714.535.395.87

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Hourly and Quarterly Assessment of Number of Awakenings of at Least 2 Epoch After Sleep Onset (NAASO2)

NAASO2, as determined by PSG, was the number of times there was a wake period of at least 2 30-sec epochs from the onset of persistent sleep to light on. Each entry to be counted must be separated by a Stage N2 30-sec epoch, Stage N3 30-sec epoch, or Stage R 30-sec epoch. The sum of 2 consecutive days of recording was divided by 2 at the end of each intervention period by each individual hour (8 hours total) and each individual quarter of the night (eight hours in 2 hour increments). Arithmetic mean of NAASO2 of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

,,
Interventionawakenings (Least Squares Mean)
Hour 1 (n= 66, 67, 66)Hour 2 (n= 67, 70, 66)Hour 3 (n= 67, 70, 67)Hour 4 (n= 67, 70, 68)Hour 5 (n= 67, 70, 68)Hour 6 (n= 67, 71, 68)Hour 7 (n= 67, 71, 68)Hour 8 (n= 67, 71, 68)Quarter 1 (n= 67, 70, 66)Quarter 2 (n= 67, 70, 68)Quarter 3 (n= 67, 71, 68)Quarter 4 (n= 67, 71, 68)
Placebo0.731.371.411.481.481.441.571.282.062.852.922.86
Pramipexole 0.5 mg0.611.721.711.841.761.571.941.562.273.563.303.44
Pregabalin 300 mg0.421.040.991.011.061.021.241.001.431.992.102.25

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Hourly and Quarterly Assessment of Periodic Limb Movement (PLM)

PLM, as determined by PSG was number of periodic limb movements based on time in bed (TIB). Calculated at each individual hour (8 hours total) and each individual quarter of the night (eight hours in 2 hour increments). Arithmetic mean of PLM of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

,,
Interventionmovement/hour (Least Squares Mean)
Hour 1Hour 2Hour 3Hour 4Hour 5Hour 6Hour 7Hour 8Quarter 1Quarter 2Quarter 3Quarter 4
Placebo54.6752.9348.7646.5836.1732.4727.0420.97107.5695.3168.6648.01
Pramipexole 0.5 mg21.5712.4914.0514.5011.9310.5711.1116.5534.0228.5522.4927.64
Pregabalin 300 mg31.4526.3840.9330.3525.7021.0214.2213.3757.8271.2946.7727.60

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Hourly and Quarterly Assessment of Sleep Efficiency (SE)

SE, as determined by PSG, was the TST divided by the time in bed (TIB)(both in minutes), multiplied by 100. Sum of 2 consecutive days of recording divided by 2 at the end of each intervention period by each individual hour (8 hours total) and each individual quarter of the night (eight hours in 2 hour increments). Arithmetic mean for SE of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

,,
Interventionpercentage of time asleep (Least Squares Mean)
Hour 1Hour 2Hour 3Hour 4Hour 5Hour 6Hour 7Hour 8Quarter 1Quarter 2Quarter 3Quarter 4
Placebo57.8077.3181.8682.6182.9282.4979.8669.7567.6282.3082.7574.84
Pramipexole 0.5 mg66.8883.4384.8679.8481.8581.6480.9069.5175.1582.3781.7475.16
Pregabalin 300 mg62.3186.1390.2289.4190.0090.3384.7078.0774.2189.8490.0981.37

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Hourly and Quarterly Assessment of Wake After Sleep Onset (WASO)

WASO, as determined by PSG was time spent awake from sleep onset to final awakening. WASO = (sum of WTDS 30-sec epochs and WTAS 30-sec epochs)/2, measured on 2 consecutive days at end of each intervention period by each individual hour (8 hours total) and each individual quarter of night (eight hours in 2 hour increments). Arithmetic mean of WASO of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

,,
Interventionminutes (Least Squares Mean)
Hour 1 (n= 66, 67, 66)Hour 2 (n= 67, 70, 66)Hour 3 (n= 67, 70, 67)Hour 4 (n= 67, 70, 68)Hour 5 (n= 67, 70, 68)Hour 6 (n= 67, 71, 68)Hour 7 (n= 67, 71, 68)Hour 8 (n= 67, 71, 68)Quarter 1 (n= 67, 70, 66)Quarter 2 (n= 67, 70, 68)Quarter 3 (n= 67, 71, 68)Quarter 4 (n= 67, 71, 68)
Placebo3.357.398.909.5210.0410.5212.0918.1510.3518.1820.5530.21
Pramipexole 0.5 mg2.267.078.2311.5410.3910.5411.4418.278.9919.7720.7729.55
Pregabalin 300 mg1.625.044.896.215.935.789.1813.166.4211.0811.8122.37

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Medical Outcomes Study - Sleep Scale (MOS-SS)

MOS-SS:Participant rated instrument, assesses sleep quantity, quality;with 12 items(7 subscale scores:sleep disturbance, snoring, awakening short of breath/with headache, sleep adequacy, somnolence, sleep quantity, optimal sleep;2 composite index scores:sleep problems Index I, II). Subscale scores total range:0-100(except sleep quantity[range 0-24 hours], optimal sleep[range 0-1: 0= <7 or >8 hours;1=7/8 hours]). Higher scores=poorer sleep outcomes(except sleep quantity, adequacy). Arithmetic mean of MOS-SS scores of each participant for all periods was taken before linear mixed model analysis. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

,,
Interventionunits on a scale (Least Squares Mean)
Awaken Short of Breath/with Headache (n= 68,71,69)Adequacy (n= 68,71,69)Somnolence (n= 68,71,69)Sleep Quantity (n= 68,71,69)6-Item Sleep Problems Index (n= 68,71,69)9-Item Sleep Problems Index (n= 68,71,69)Optimal Sleep (n= 68,71,69)Sleep Disturbance (n= 68,71,69)Snoring (n= 67,71,68)
Placebo10.8840.7923.715.9740.5942.890.2948.6517.96
Pramipexole 0.5 mg13.1043.9021.326.5037.2437.880.3540.1915.97
Pregabalin 300 mg11.5954.9621.286.4330.6932.750.4334.0815.27

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Minutes of Stage N1, N2, N3 and R Sleep

Minutes of Stage 1 Non-Rapid Eye Movement (Non-REM) sleep (Stage N1), Stage 2 Non-REM sleep (Stage N2), Stage 3 Non-REM sleep (Stage N3) or Slow Wave Sleep (SWS) and Stage REM (Stage R) sleep, as determined by PSG were calculated as total number of Stage N1 30-second (30-sec) epochs divided by 2, total number of Stage N2 30-sec epochs divided by 2, total number of Stage N3 30-sec epochs divided by 2 and total number of Stage R 30-sec epochs divided by 2 respectively. Arithmetic mean of minutes of stage N1, N2, N3 and R sleep of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

,,
Interventionminutes (Least Squares Mean)
Stage N1 SleepStage N2 SleepStage N3 Sleep/SWSStage R Sleep
Placebo43.72204.3545.9575.37
Pramipexole 0.5 mg48.38241.5234.7851.80
Pregabalin 300 mg38.06227.0566.8870.40

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Arousal Index (NASOI)

Arousal index, as determined by PSG, was NASO per hours of sleep from the onset of persistent sleep to light on. Arithmetic mean of NASOI of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionarousals/hour (Least Squares Mean)
Pregabalin 300 mg2.75
Pramipexole 0.5 mg4.18
Placebo3.44

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International Restless Legs Syndrome Study Group Rating Scale (IRLS)

IRLS: psychometrically; clinically valid; clinician-administered instrument assesses severity of RLS. RLS symptom severity and impact on daily living comprise of 10 items giving 2 subscale scores and 1 global score. Subscale scores: symptom severity(6 items) and impact on daily living(3 items), item 3 loaded equally on both subscales. Global score calculated from 10 items. Score of all items range from 0-4, total score range:0-40. Lower scores: lower severity and better quality of life. Arithmetic mean of IRLS of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionunits on a scale (Least Squares Mean)
Pregabalin 300 mg12.28
Pramipexole 0.5 mg15.35
Placebo18.38

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Latency to Persistent Sleep (LPS)

"LPS, as determined by PSG, was number of epochs from the beginning of the recording (lights-out) to the start of the first 20 consecutive non-wake epochs (10 minutes of persistent sleep) divided by 2. Arithmetic mean of LPS of each participant for all periods was taken prior to employing linear mixed model." (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or ET

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg31.13
Pramipexole 0.5 mg31.52
Placebo38.86

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Wake After Sleep Onset (WASO)

WASO as determined by Polysomnography (PSG) was time spent awake from sleep onset to final awakening. WASO= Wake Time During Sleep [WTDS] epochs + Wake Time After Sleep [WTAS] epochs)/2. WTDS: number of wake epochs (30 seconds of PSG recording) after onset of persistent sleep and prior to final awakening or end of 8-hour recording/2 and WTAS: number of wake epochs after final awakening until end of the 8-hour recording/2. WASO was measured on 2 consecutive days within a period. Arithmetic mean of WASO of each participant for all periods was taken prior to employing linear mixed model. (NCT00991276)
Timeframe: Week 5 (End of Intervention Period 1), Week 11 (End of Intervention Period 2) and Week 17 (End of Intervention Period 3) or Early Termination (ET)

Interventionminutes (Least Squares Mean)
Pregabalin 300 mg51.50
Pramipexole 0.5 mg78.42
Placebo78.60

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Mean Change From Baseline to Weekly Mean Pain Score - Daily Pain Numeric Rating Scale (NRS)

Mean pain score was calculated for each week during the double-blind treatment phase (Week 1 to Week 15). For each week, only days up to the last day on study medication were considered. A minimum of 4 pain diaries were required to calculate the mean pain score. The pain NRS consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). (NCT01020474)
Timeframe: Baseline to Week 15

,
InterventionUnits on a scale (Least Squares Mean)
Week 1 (N= 52, 49)Week 2 (N= 54, 47)Week 3 (N= 52, 44)Week 4 (N= 50, 46)Week 5 (N= 49, 44)Week 6 (N= 49, 44)Week 7 (N= 48, 42)Week 8 (N= 46, 44)Week 9 (N= 46, 42)Week 10 (N= 45, 40)Week 11 (N= 44, 38)Week 12 (N= 43, 34)Week 13 (N= 42, 33)Week 14 (N= 41, 34)Week 15 (N= 35, 33)
Placebo-0.41-0.48-0.45-0.55-0.59-0.51-0.77-0.59-0.66-0.85-1.07-0.78-1.01-1.11-1.16
Pregabalin-0.48-1.11-1.27-1.45-1.27-1.47-1.67-1.65-1.61-1.82-1.93-1.75-1.75-2.01-1.90

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Mean Change From Baseline to Weekly Mean Sleep Quality Score (NRS)

"Mean sleep quality score was calculated for each week during the double-blind treatment phase (Week 1 to Week 15). A minimum of 4 sleep diaries are required to calculate the mean pain score. The daily quality of sleep diary consists of an 11-point numeric rating scale with which the patient rates the quality of their sleep during the past 24 hours. Zero indicates best possible sleep and 10 indicates worst possible sleep." (NCT01020474)
Timeframe: Baseline to Week 15

,
InterventionUnits on a scale (Least Squares Mean)
Week 1 (N= 52, 49)Week 2 (N= 54, 47)Week 3 (N= 52, 44)Week 4 (N= 50, 46)Week 5 (N= 49, 44)Week 6 (N= 49, 44)Week 7 (N= 48, 42)Week 8 (N= 46, 44)Week 9 (N= 46, 42)Week 10 (N= 45, 40)Week 11 (N= 44, 38)Week 12 (N= 43, 34)Week 13 (N= 42, 33)Week 14 (N= 41, 34)Week 15 (N= 35, 33)
Placebo-0.30-0.65-0.44-0.54-0.61-0.54-0.81-0.42-0.81-0.66-0.95-0.77-1.00-0.94-1.08
Pregabalin-0.52-0.84-0.89-1.03-0.99-1.18-1.30-1.43-1.38-1.43-1.39-1.38-1.34-1.36-1.25

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Proportion of Patient Global Impression Change (PGIC) at Week 15

Responder rates based on PGIC was derived and tabulated by treatment group. A responder was defined as a participant who reports much improved or very much improved. The PGIC is a patient-rated single item that measures patient's perception of change in their overall status since starting study medication on a scale ranging from 1 (very much improved) to 7 (very much worse). (NCT01020474)
Timeframe: Week 15

,
Interventionpercentage of participants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Placebo2.327.327.338.62.32.30
Pregabalin16.336.722.418.46.100

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Change From Baseline to Week 15 in Mean Sleep Quality Diary Score

"Change from Baseline to endpoint in mean sleep quality score from the daily sleep diary, defined as the mean of the last 7 diary entries prior to Visit 10 in the study while the participant is on study medication. The daily quality of sleep diary consists of an 11-point numeric rating scale with which the patient rates the quality of their sleep during the past 24 hours. Zero indicates best possible sleep and 10 indicates worst possible sleep." (NCT01020474)
Timeframe: Week 15

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-1.13
Placebo-0.94

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Change From Baseline to Week 15 in Mean Pain Diary Score

"The Primary Endpoint is based on the daily pain diary, and is defined as change from baseline to Week 15 in mean pain diary score. The daily pain diary consists of an 11-point numeric rating scale ranging from zero (no pain) to 10 (worst possible pain). The patients rate their pain during the past 24 hours by choosing the appropriate number between 0 (no pain) and 10 (worst possible pain)." (NCT01020474)
Timeframe: Week 15

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-1.60
Placebo-0.94

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Change From Baseline to Week 15 in Mean Pain Numeric Rating Scale (1 Week Recall Period)

The weekly pain numeric rating scale (Weekly Pain NRS) consists of an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain), where higher scores indicate greater degree of impairment. Participants choose the number that best describes the pain during the last week. (NCT01020474)
Timeframe: Week 15

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-1.64
Placebo-0.77

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Proportion of 30% Responders in Weekly Mean Pain Score (NRS) at Week 15

At each visit, participants with at least 30% reduction from Baseline in mean pain score were defined as a 30% responder at the visit. The pain NRS consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). (NCT01020474)
Timeframe: Week 15

Interventionpercentage of participants (Number)
Pregabalin42.6
Placebo38.8

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Proportion of 50% Responder in Weekly Mean Pain Score (NRS) at Week 15

At each visit, participants with at least 50% reduction from Baseline in mean pain score were defined as a 50% responder at the visit. The pain NRS consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). (NCT01020474)
Timeframe: Week 15

Interventionpercentage of participants (Number)
Pregabalin20.4
Placebo10.2

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Change From Baseline in Pain Numeric Rating Scale by Week

The weekly pain numeric rating scale (Weekly Pain NRS) consists of an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain), where higher scores indicate worse pain. Participants chose the number that best described the pain during the last week. Negative change indicates improvement. (NCT01020526)
Timeframe: Baseline, Weeks 3, 8, 16, 24 and Last Visit.

InterventionNumber (Mean)
Baseline (N=63)Week 3 (N=61)Week 8 (N=55)Week 16 (N=51)Week 24 (N=55)Last Visit (N=63)
Pregabalin6.7-2.1-1.8-2.1-2.1-2.1

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) Subscales and Total Intensity Score at Endpoint (up to Week 16)

NPSI: participant rated questionnaire to evaluate different symptoms of neuropathic pain (subscales: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]). Includes 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. The relevant subscales and total score were transformed to 0-1, higher score indicates a greater intensity of pain. Endpoint=last observation for participant as per imputation method. (NCT01049217)
Timeframe: Baseline, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
Baseline: Burning Pain (n=183, 192)Change at Endpoint: Burning Pain (n=173, 176)Baseline: Pressing Pain (n=182, 192)Change at Endpoint: Pressing Pain (n=173, 176)Baseline: Paroxysmal Pain (n=183, 192)Change at Endpoint: Paroxysmal Pain (n=173, 176)Baseline: Evoked Pain (n=183, 192)Change at Endpoint: Evoked Pain (n=173, 176)Baseline: P/D (n=183, 192)Change at Endpoint: P/D (n=173, 176)Baseline: Total Score (n=182, 192)Change at Endpoint: Total Score (n=173,176)
Placebo0.62-0.260.54-0.210.56-0.230.55-0.210.63-0.250.57-0.23
Pregabalin0.61-0.240.55-0.220.56-0.220.57-0.220.62-0.230.58-0.22

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Change From Baseline in 36-Item Short-Form Health Survey (SF-36) at Endpoint (up to Week 16)

SF-36 is a standardized survey evaluating 8 domains of functional health and well being: physical and social (So) functioning (Fn), physical and emotional role (role-physical [R-P], role-emotional [R-E]) limitations, bodily pain (BP), general health (GH), vitality (Vit), mental health (MnH). Two summary scores include Physical Component (Ph C) and Mental Component (Mn C). The score for a section is an average of the individual question scores. Score range for domain scores and summary scores: 0-100 (100=highest level of functioning). (NCT01049217)
Timeframe: Baseline, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
Baseline: Ph Fn (n=183, 192)Change at Endpoint: Ph Fn (n=173, 176)Baseline: R-P (n=183, 192)Change at Endpoint: R-P (n=173, 176)Baseline: BP (n=183, 192)Change at Endpoint: BP (n=172, 176)Baseline: GH (n=183, 192)Change at Endpoint: GH (n=173, 176)Baseline: Ph C (n=183, 192)Change at Endpoint: Ph C (n=171, 176)Baseline: Vit (n=183, 192)Change at Endpoint: Vit (n=172, 176)Baseline: So Fn (n=183, 192)Change at Endpoint: So Fn (n=173, 176)Baseline: R-E (n=183, 192)Change at Endpoint: R-E (n=173, 176)Baseline: MnH (n=183, 192)Change at Endpoint: MnH (n=172, 176)Baseline: Mn C (n=183, 192)Change at Endpoint: Mn C (n=171, 176)
Placebo56.306.8558.377.0548.4712.8659.477.3740.064.1759.804.8766.346.1867.931.8568.594.1247.181.21
Pregabalin55.258.2955.439.0348.1113.1358.838.2539.664.4461.012.8668.372.6063.806.7469.073.1147.121.18

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Change From Baseline in Brief Pain Inventory-Short Form (BPI-sf) Score at Week 4, 8, 12, 16 and Endpoint (up to Week 16)

BPI-sf:5-item self-administered questionnaire to assess severity,impact of pain on daily functions. Pain Severity Index (PSI):average of Question 1-4 each measured severity of pain over past 24-hours on 11-point scale (0=no pain to 10=worst possible pain). Pain Interference Index (PII):average of 7 pain interference items of Question 5 that measured level of interference of pain on daily function on 11-point scale (0=does not interfere to 10=completely interferes). For PSI, PII range:0-10 higher score=higher pain/interference. Endpoint=last observation for participant as per imputation method. (NCT01049217)
Timeframe: Baseline, Week 4, 8, 12, 16, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
Baseline: PSI (n=182, 192)Change at Week 4: PSI (n=158, 169)Change at Week 8: PSI (n=146, 154)Change at Week 12: PSI (n=126, 137)Change at Week 16: PSI (n=166, 166)Change at Endpoint: PSI (n=175,182)Baseline: PII (n=182, 192)Change at Week 4: PII (n=158, 169)Change at Week 8: PII (n=146, 154)Change at Week 12: PII (n=126, 137)Change at Week 16: PII (n=166, 165)Change at Endpoint: PII (n=175,182)
Placebo6.47-1.28-2.02-2.60-2.55-2.445.44-1.40-1.97-2.32-2.38-2.31
Pregabalin6.49-1.55-2.15-2.49-2.38-2.365.51-1.43-2.00-2.32-2.14-2.12

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Change From Baseline in Hospital Anxiety and Depression Scales (HADS) at Endpoint (up to Week 16)

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. Endpoint was the last observation for a participant assessed using imputation method. (NCT01049217)
Timeframe: Baseline, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
Baseline: HADS-A (n=183, 192)Change at Endpoint: HADS-A (n=173, 176)Baseline: HADS-D (n=183, 192)Change at Endpoint: HADS-D (n=173, 176)
Placebo6.32-1.505.42-1.02
Pregabalin5.99-1.034.920.07

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Change From Baseline in Mean Pain Score at Endpoint (up to Week 16)

Mean pain score was defined as the mean of the last 7 daily diary pain ratings. Participants rated their Human Immunodeficiency Virus (HIV) neuropathy pain over the past 24 hours on an 11-point numeric rating scale ranging from 0 = no pain to 10 = worst possible pain. A rating of 1-3 was considered as mild pain; 4-6 = moderate pain; and 7-10 = severe pain. Endpoint was the last observation for a participant assessed using specified imputation method, modified Baseline Observation Carried Forward (mBOCF). (NCT01049217)
Timeframe: Baseline, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
BaselineChange at Endpoint
Placebo6.85-2.36
Pregabalin6.76-2.26

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Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Endpoint (up to Week 16)

Participant-rated 12-item questionnaire to assess constructs of sleep over past week; 7 subscales: sleep disturbance (range 0-100), snoring (range 0-100), awaken short of breath (SOB) or with headache (range 0-100), sleep adequacy (range 0-100), somnolence (range: 0-100); sleep quantity (range: 0-24), optimal sleep (yes/no), and 9 item index measures of sleep disturbance provide composite scores: sleep problems index (range 0-100). Except adequacy, optimal sleep and quantity, higher scores=more impairment. Endpoint was the last observation for a participant assessed using imputation method. (NCT01049217)
Timeframe: Baseline, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
Baseline: Sleep Disturbance (n=183, 192)Change at Endpoint: Sleep Disturbance (n=173, 175)Baseline: Snoring (n=181, 192)Change at Endpoint: Snoring (n=171, 175)Baseline: SOB (n= 183, 192)Change at Endpoint: SOB (n=173, 175)Baseline: Quantity (n= 183, 192)Change at Endpoint: Quantity (n=173, 175)Baseline: Adequacy (n= 183, 192)Change at Endpoint: Adequacy (n=173, 175)Baseline: Somnolence (n= 183, 192)Change at Endpoint: Somnolence (n=173, 175)Baseline: Sleep Problems Index (n= 183, 192)Change at Endpoint:Sleep Problems Index(n=173,175)
Placebo39.32-8.6426.04-3.7725.83-7.097.960.3654.224.6329.10-4.2336.91-6.70
Pregabalin35.27-6.5825.300.9422.08-3.017.500.2757.815.2626.05-0.7732.97-4.25

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Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) Item Scores at Endpoint (up to Week 16)

NPSI: participant-rated questionnaire to evaluate different symptoms of neuropathic pain. It includes 10 descriptors and 2 temporal items. Results reported for the 10 descriptors (burning, squeezing, pressure, electric shocks, stabbing, light touching of area, pressure of area, cold of area, pins and needles, tingling) quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) scale. Endpoint was the last observation for a participant assessed using specified imputation method. (NCT01049217)
Timeframe: Baseline, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
Baseline: Burning (n=183, 192)Change at Endpoint: Burning (n=173, 176)Baseline: Squeezing (n=183, 192)Change at Endpoint: Squeezing (n=173, 176)Baseline: Pressure (n=183, 192)Change at Endpoint: Pressure (n=172, 176)Baseline: Electric Shocks (n=183, 192)Change at Endpoint: Electric Shocks (n=173, 176)Baseline: Stabbing (n=183, 192)Change at Endpoint: Stabbing (n=173, 176)Baseline: Light Touching (n=183, 192)Change at Endpoint: Light Touching (n=173, 176)Baseline: Pressure of Area (n=183, 192)Change at Endpoint: Pressure of Area (n=173, 176)Baseline: Cold of Area (n=183, 192)Change at Endpoint: Cold of Area (n=173, 176)Baseline: Pins and Needles (n=183, 192)Change at Endpoint: Pins and Needles (n=173, 176)Baseline: Tingling (n=183, 192)Change at Endpoint: Tingling (n=173, 176)
Placebo6.2-2.65.2-2.15.5-2.25.1-2.06.1-2.55.0-1.96.0-2.35.5-2.06.6-2.66.1-2.4
Pregabalin6.1-2.45.3-2.15.8-2.35.4-2.25.8-2.25.0-1.96.0-2.55.9-2.26.7-2.65.8-2.1

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Number of Participants With Categorical Scores on Clinician Global Impression of Change (CGIC)

The CGIC scale measures a physician's global impression of a participant's clinical condition at final visit in terms of change relative to the start of treatment (CGIC). At final visit, the participants CGIC will be categorized into a three point scale as: improvement: CGI response of very much improved, much improved or minimally improved; no change: CGI response of no change; worsening: CGI response of very much worse, much worse or minimally worse. Number of participants in each category is reported. (NCT01049217)
Timeframe: Week 16

,
Interventionparticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much Worse
Placebo47534925200
Pregabalin45594817300

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Change From Baseline in Numeric Rating Scale (NRS)-Current Pain Score at Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 and Endpoint (up to Week 16)

"Weekly current pain score was defined as the mean of the daily current pain diary ratings split into 7 day intervals. Participants rated current (right now) HIV neuropathy pain an 11-point NRS ranging from 0 = no pain to 10 = worst possible pain. A rating of 1-3 was considered as mild pain; 4-6 = moderate pain; and 7-10 = severe pain. Endpoint was the last observation for a participant assessed using specified imputation method." (NCT01049217)
Timeframe: Baseline, Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
Baseline (n=183, 192)Change at Week 1 (n=181, 190)Change at Week 2 (n=174, 179)Change at Week 3 (n=170, 172)Change at Week 4 (n=158, 169)Change at Week 5 (n=157, 166)Change at Week 6 (n=152, 157)Change at Week 7 (n=153, 153)Change at Week 8 (n=148, 153)Change at Week 9 (n=143, 148)Change at Week 10 (n=138, 142)Change at Week 11 (n=132, 136)Change at Week 12 (n=128, 135)Change at Week 13 (n=126, 133)Change at Week 14 (n=124, 131)Change at Week 15 (n=120, 132)Change at Week 16 (n=111, 128)Change at Endpoint (n=183, 191)
Placebo6.71-0.34-0.67-0.82-1.17-1.48-1.73-1.88-1.99-2.21-2.24-2.37-2.44-2.60-2.74-2.78-2.81-2.29
Pregabalin6.66-0.43-0.79-1.10-1.41-1.74-1.87-1.92-2.01-2.30-2.38-2.42-2.55-2.53-2.66-2.77-2.94-2.24

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Change From Baseline in Numeric Rating Scale (NRS)-Sleep Interference Score at Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 and Endpoint (up to Week 16)

Weekly mean sleep interference score was defined as the mean of the daily sleep interference diary ratings split into 7 day intervals. Participants rated how HIV neuropathy pain has interfered with their sleep during the past 24 hours on an 11-point NRS ranging from 0 = does not interfere with sleep to 10 = completely interferes (unable to sleep due to pain). Endpoint was the last observation for a participant assessed using specified imputation method. (NCT01049217)
Timeframe: Baseline, Week 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, Endpoint (up to Week 16)

,
Interventionunits on a scale (Mean)
Baseline (n=183, 191)Change at Week 1 (n=177, 182)Change at Week 2 (n=168, 170)Change at Week 3 (n=163, 163)Change at Week 4 (n=153, 160)Change at Week 5 (n=150, 159)Change at Week 6 (n=144, 152)Change at Week 7 (n=145, 145)Change at Week 8 (n=139, 145)Change at Week 9 (n=135, 137)Change at Week 10 (n=131, 135)Change at Week 11 (n=125, 133)Change at Week 12 (n=122, 131)Change at Week 13 (n=118, 127)Change at Week 14 (n=118, 129)Change at Week 15 (n=117, 127)Change at Week 16 (n=103, 121)Change at Endpoint (n=183, 189)
Placebo6.70-0.37-0.66-0.81-1.20-1.49-1.81-1.94-2.04-2.32-2.39-2.47-2.59-2.82-2.90-2.95-2.94-2.43
Pregabalin6.55-0.48-0.85-1.09-1.42-1.81-1.95-2.06-2.01-2.45-2.48-2.56-2.69-2.73-2.81-2.90-3.14-2.40

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Medical Outcomes Study-Sleep Scale (MOS-SS): Number of Participants With Optimal Sleep

MOS-SS: participant-rated 12 item questionnaire to assess constructs of sleep over past week. It included 7 subscales: sleep disturbance, snoring, awaken short of breath or with headache, sleep adequacy, somnolence, sleep quantity, optimal sleep, and 9 item index measures of sleep disturbance provide composite scores: sleep problems index. Participants responded whether their sleep was optimal or not optimal by choosing yes or no. Endpoint was the last observation for a participant assessed using imputation method. (NCT01049217)
Timeframe: Baseline, Endpoint (up to Week 16)

,
Interventionparticipants (Number)
Baseline (n=183, 192)Endpoint (n=173, 176)
Placebo7780
Pregabalin8080

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Neuropathic Pain Symptom Inventory (NPSI): Change From Baseline in Number of Participants With Duration of Spontaneous Pain and Number of Pain Attacks at Endpoint (up to Week 16)

NPSI: participant-rated questionnaire to evaluate different symptoms of neuropathic pain. It includes 10 descriptors, and 2 temporal items. Results reported for categorical change in temporal items assessed on 5-point scale for duration of spontaneous pain (1=continuously, 2=8-12 hours [hrs], 3=4-7 hrs, 4=1-3 hrs, 5=less than 1 hr), numbers of pain attacks (1=more than 20, 2=11-20 attacks, 3=6-10 attacks, 4=1-5 attacks, 5=no attack). Change data categorized as worsened (negative change), unchanged (no change), and improved (positive change). Endpoint=last observation as per imputation method. (NCT01049217)
Timeframe: Baseline, Endpoint (up to Week 16)

,
Interventionparticipants (Number)
Duration of Spontaneous Pain, Worsened (n=173,172)Duration of Spontaneous Pain, Unchanged(n=173,172)Duration of Spontaneous Pain, Improved (n=173,172)Number of Pain Attacks, Worsened (n=173, 176)Number of Pain Attacks, Unchanged (n=173, 176)Number of Pain Attacks, Improved (n=173, 176)
Placebo335089255497
Pregabalin315686404984

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Sitting Heart Rate

(NCT01049217)
Timeframe: Screening, Week 1, 4, 8, 12, 16, 17

,
Interventionbeats per minute (bpm) (Mean)
Screening (n=183, 192)Week 1 (n=183, 192)Week 4 (n=159, 169)Week 8 (n=147, 154)Week 12 (n=127, 137)Week 16 (n=171, 176)Week 17 (n=167, 171)
Placebo74.674.977.277.177.576.576.2
Pregabalin75.276.077.577.478.076.276.0

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Productivity and Activity Impairment Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire

WPAI: 6-question participant rated questionnaire to determine the degree to which SHP affected work productivity while at work and affected activities outside of work. It assesses amount of absenteeism, presenteeism and daily activity impairment attributable to a HIV neuropathy pain. Question 5 and 6 assesses: How much leg/foot pain affect productivity and daily activity, respectively in past 7 days? on 11-point scale, where 0 (not affected/no impairment) to 10 (completely affected/impaired). (NCT01049217)
Timeframe: Baseline, Week 16, 17

,
Interventionunits on a scale (Mean)
Baseline: Productivity Affected (n=55, 57)Week 16: Productivity Affected (n=60, 54)Week 17: Productivity Affected (n=58, 48)Baseline: Daily Activity Affected (n=183, 192)Week 16: Daily Activity Affected (n=169, 170)Week 17: Daily Activity Affected (n=167, 171)
Placebo5.933.153.006.123.663.64
Pregabalin5.003.603.406.033.753.82

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Number of Participants With Treatment-Emergent (TE) Adverse Events (AEs) or Serious Adverse Events (SAEs)

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to 28 days after last dose that were absent before treatment or that worsened relative to pretreatment state. (NCT01049217)
Timeframe: Baseline up to 28 days after last dose

,
Interventionparticipants (Number)
AEsSAEs
Placebo1177
Pregabalin1267

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Number of Participants With Response to Sheehan-Suicidality Tracking Scale (S-STS) Mapped to the Columbia Classification Algorithm of Suicide Assessment (C-CASA) Categories

S-STS:8-item clinician/participant administered prospective rating scale to assess TE suicidal(Su) ideation(ID),behavior(BHV).Items 1a,2-6,7a,8 scored on 5-point Likert scale 0(not at all) to 4(extremely). Items 1,1b,7 require yes/no response. S-STS total score range 0-30. Lower score=reduced Su tendency. Responses on S-STS were mapped to Columbia Classification Algorithm of Suicide Assessment(C-CASA) as 1:Completed Su; 2: Su attempt; 3: Preparatory acts; 4: Su ID; 5: Self-injurious (SI) BHV, intent unknown; 6: Not enough information; 7: SI BHV, no Su intent; 8: Other, no deliberate self harm. (NCT01049217)
Timeframe: Screening, Post-Baseline (Week 4 up to Week 17)

,
Interventionparticipants (Number)
Screening: Su Attempt (n=183, 192)Screening: Preparatory Acts (n=183, 192)Screening: Su ID (n=183, 192)Screening: SI BHV, no Su intent (n=183, 192)Post-Baseline: Completed Suicide (n=178, 185)Post-Baseline: Su Attempt (n=178, 185)Post-Baseline: Preparatory Acts (n=178, 185)Post-Baseline: Su ID (n=178, 185)Post-Baseline: SI BHV, no Su intent (n=178, 185)
Placebo88374012110
Pregabalin5528400050

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Number of Participants With Response to Patient Health Questionnaire-8 (PHQ-8)

"PHQ-8: 8-item self-administered validated subset of PHQ-9, which comprises first 8 items of measure. Participant rated Over past 2 weeks, how often bothered by any of following problems?: little interest in doing things(1); feeling down(2); trouble falling or staying asleep/sleeping too much(3); feeling tired(4); poor appetite/overeating(5); feeling bad about self(6); trouble concentrating(7); moving or speaking slowly or being so fidgety/moving around more than usual (8). Each item scored on scale of 0(not at all)-3(nearly every day). Total score range: 0-24, higher score=greater severity." (NCT01049217)
Timeframe: Screening

,
Interventionparticipants (Number)
Little Interest: Not at All (n=183, 192)Little Interest: Several Days (n=183, 192)Little Interest: > 1/2 Days (n=183,192)Little Interest: Nearly Every Day (n=183, 192)Feeling Down: Not at All (n=183, 192)Feeling Down: Several Days (n=183, 192)Feeling Down: > 1/2 Days the Days (n=183, 192)Feeling Down: Nearly Every Day (n=183, 192)Trouble With Sleep: Not at All (n=182, 192)Trouble With Sleep: Several Days (n=182, 192)Trouble With Sleep: > 1/2 Days (n=182, 192)Trouble With Sleep: Nearly Every Day (n=182, 192)Feeling Tired: Not at All (n=183, 192)Feeling Tired: Several Days (n=183, 192)Feeling Tired: > 1/2 Days (n=183, 192)Feeling Tired: Nearly Every Day (n=183, 192)Poor Appetite/Overeat: Not at All (n=183, 192)Poor Appetite/Overeat: Several Days (n=183, 192)Poor Appetite/Overeat: > 1/2 Days (n=183, 192)Poor Appetite/Overeat: Nearly Everyday (n=183,192)Feeling Bad About Self: Not at All (n=183, 192)Feeling Bad About Self: Several Days (n=183, 192)Feeling Bad About Self: > 1/2 Days (n=183, 192)Feeling Bad About Self: Nearly Everyday(n=183,192)Trouble Concentrating: Not at All (n=183, 192)Trouble Concentrating: Several Days (n=183, 192)Trouble Concentrating: > 1/2 Days (n=183, 192)Trouble Concentrating: Nearly Everyday (n=183,192)Move-Speak Slow/Fidgety: Not at All (n=183,192)Move-Speak Slow/Fidgety:Several Days(n=183,192)Move-Speak Slow/Fidgety: >1/2 Days (n=183, 192)Move-Speak Slow/Fidgety:Nearly Everyday(n=183,192)
Placebo8972201110959121268862216561002971165615513843651403313614333106
Pregabalin7763232010561134636926245787271299532110124411261313511614423106

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Number of Participants With Neurological Examination Findings

A neurological examination consisted of examination of the mental state, cranial nerve function, motor function (reflexes of patellar, achilles, biceps, babinski and coordination) and sensory function (sharp sensation of dorsal surface of right and left great toe, light touch of lower extremities [LE], right and left first metatarsal joint position sense, and vibration sensation [vibration is felt for < 6 seconds = markedly diminished, 6 to 10 seconds = mild loss, > 10 seconds = normal]). (NCT01049217)
Timeframe: Screening

,
Interventionparticipants (Number)
Cranial Nerve Function: MissingCranial Nerve Function: NormalCranial Nerve Function: AbnormalCranial Nerve Function: Not DoneCoordination, Gait: MissingCoordination, Gait: NormalCoordination, Gait: Not EvaluableCoordination, Gait: Mild AtaxiaCoordination, Gait: Moderate AtaxiaCoordination, Gait: Severe AtaxiaCoordination, Romberg Test: MissingCoordination, Romberg Test: NormalCoordination, Romberg Test: AbnormalCoordination, Romberg Test: Not DoneReflexes, Left Patellar: MissingReflexes, Left Patellar: None/AbsentReflexes, Left Patellar: NormalReflexes, Left Patellar: Not DoneReflexes, Left Patellar: Hypoactive (Diminished)Reflexes, Left Patellar: Hyperactive (More Brisk)Reflexes, Left Patellar: Clonus (Very Intense)Reflexes, Right Patellar: MissingReflexes, Right Patellar: None/AbsentReflexes, Right Patellar: NormalReflexes, Right Patellar: Not DoneReflexes, Right Patellar: Hypoactive (Diminished)Reflexes, Right Patellar: Hyperactive (More Brisk)Reflexes, Right Patellar: Clonus (Very Intense)Reflexes, Left Achilles: MissingReflexes, Left Achilles: None/AbsentReflexes, Left Achilles: NormalReflexes, Left Achilles: Not DoneReflexes, Left Achilles: Hypoactive (Diminished)Reflexes, Left Achilles: Hyperactive (More Brisk)Reflexes, Left Achilles: Clonus (Very Intense)Reflexes, Right Achilles: MissingReflexes, Right Achilles: None/AbsentReflexes, Right Achilles: NormalReflexes, Right Achilles: Not DoneReflexes, Right Achilles: Hypoactive (Diminished)Reflexes, Right Achilles: Hyperactive (More Brisk)Reflexes, Right Achilles: Clonus (Very Intense)Reflexes, Right Biceps: MissingReflexes, Right Biceps: None/AbsentReflexes, Right Biceps: NormalReflexes, Right Biceps: Not DoneReflexes, Right Biceps: Hypoactive (Diminished)Reflexes, Right Biceps: Hyperactive (More Brisk)Reflexes, Right Biceps: Clonus (Very Intense)Reflexes, Left Biceps: MissingReflexes, Left Biceps: None/AbsentReflexes, Left Biceps: NormalReflexes, Left Biceps: Not DoneReflexes, Left Biceps: Hypoactive (Diminished)Reflexes, Left Biceps: Hyperactive (More Brisk)Reflexes, Left Biceps: Clonus (Very Intense)Mental State: MissingMental State: NormalMental State: AbnormalMental State: Not DoneSensory Function, Right Great Toe: MissingSensory Function, Right Great Toe: AbsentSensory Function, Right Great Toe: DiminishedSensory Function, Right Great Toe: NormalSensory Function, Right Great Toe: IncreasedSensory Function, Left Great Toe: MissingSensory Function, Left Great Toe: AbsentSensory Function, Left Great Toe: DiminishedSensory Function, Left Great Toe: NormalSensory Function, Left Great Toe: IncreasedSensory Function-Light Touch, LE: MissingSensory Function-Light Touch, LE: Not DoneSensory Function-Light Touch, LE: Unable to DetectSensory Function-Light Touch, LE: HyposensitivitySensory Function-Light Touch, LE: Normal SensationSensory Function-Light Touch, LE: HypersensitivitySensory Function, Right Metatarsal Sense: MissingSensory Function, Right Metatarsal Sense: NormalSensory Function, Right Metatarsal Sense: AbnormalSensory Function, Right Metatarsal Sense: Not DoneSensory Function, Left Metatarsal Sense: MissingSensory Function, Left Metatarsal Sense: NormalSensory Function, Left Metatarsal Sense: AbnormalSensory Function, Left Metatarsal Sense: Not DoneVibration Sensation: MissingVibration Sensation: Not DoneVibration Sensation: AbsentVibration Sensation: Markedly DiminishedVibration Sensation: Mild LossVibration Sensation: NormalReflexes, Right Babinski: MissingReflexes, Right Babinski: Not EvaluableReflexes, Right Babinski: AbsentReflexes, Right Babinski: PresentReflexes, Left Babinski: MissingReflexes, Left Babinski: Not EvaluableReflexes, Left Babinski: AbsentReflexes, Left Babinski: Present
Placebo0192001181271001882201313004180013129041900100130781001009082100217827300218016300192000571147140581128143648102258014347201434632124527934061806061806
Pregabalin11784011692731117462171240438018124142701921407330190140753011166384011169273031791016399515161102514273999288112952111295122127428625131736131736

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Total Sleep Time (TST) and Minutes of Interrupted Sleep (MIS)

Total sleep time is the number of minutes asleep between time of sleep onset to morning awakening and MIS is the number of minutes spent awake after sleep onset to final awakening. TST and MIS were determined by actigraphy. Actigraphy was performed with an accelerometer that was worn on the wrist like a watch. It was programmed to record movements while the device was being worn. Endpoint was the last observation for a participant assessed using specified imputation method. (NCT01049217)
Timeframe: Baseline (Day -14 to 1), Week 1 through Week 4, Week 12 through Week 16, Endpoint (up to Week 16)

,
Interventionminutes (Least Squares Mean)
Endpoint: TSTEndpoint: MIS
Placebo400.2945.14
Pregabalin396.8441.48

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Number of Participants With Categorical Scores on Patient Global Impression of Change (PGIC)

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Number of participants in each category is reported. (NCT01049217)
Timeframe: Week 16

,
Interventionparticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much Worse
Placebo51663617240
Pregabalin42694213520

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Sitting Systolic and Diastolic Blood Pressure

Systolic Blood Pressure (SBP) is the blood pressure (pressure exerted by circulating blood on the walls of blood vessels) when heart is contracting; it is the maximum arterial pressure during contraction of left ventricle of heart. Diastolic Blood Pressure (DBP) is the blood pressure (pressure exerted by circulating blood on the walls of blood vessels) when heart is relaxing; it is the minimum arterial pressure during relaxation and dilation of ventricles of heart. (NCT01049217)
Timeframe: Screening, Week 1, 4, 8, 12, 16, 17

,
Interventionmillimeter of mercury (mmHg) (Mean)
Screening: SBP (n=183, 192)Week 1: SBP (n=183, 192)Week 4: SBP (n=159, 169)Week 8: SBP (n=147, 154)Week 12: SBP (n=127, 137)Week 16: SBP (n=171, 176)Week 17: SBP (n=167, 171)Screening: DBP (n=183, 192)Week 1: DBP (n=183, 192)Week 4: DBP (n=159, 169)Week 8: DBP (n=147, 154)Week 12: DBP (n=127, 137)Week 16: DBP (n=171, 176)Week 17: DBP (n=167, 171)
Placebo122.1120.4119.8120.7121.7122.9121.678.477.576.577.678.078.178.5
Pregabalin121.2119.9117.9118.6120.2119.3120.178.776.976.076.077.576.476.4

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Number of Participants Who Were Employed or Unemployed Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire

"WPAI: 6-question participant rated questionnaire to determine the degree to which specific health problem (SHP) affected work productivity while at work and affected activities outside of work. It assesses amount of absenteeism, presenteeism and daily activity impairment attributable to a HIV neuropathy pain. Number of participants who responded Yes/No to Question 1: Are you currently employed (working for pay)? are reported." (NCT01049217)
Timeframe: Baseline, Week 16, 17

,
Interventionparticipants (Number)
Baseline: Employed (n=183, 192)Week 16: Employed (n=169, 170)Week 17: Employed (n=167, 171)Baseline: Unemployed (n=183, 192)Week 16: Unemployed (n=169, 170)Week 17: Unemployed (n=167, 171)
Placebo575147135119124
Pregabalin575758126112109

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Number of Participants With Abnormal Physical Examination Findings

A physical examination included an examination of the general appearance, skin, chest, pulses, pulmonary, cardiovascular, head, eyes, ears, nose, throat, abdominal, and extremities. (NCT01049217)
Timeframe: Screening, Week 8, 17

,
Interventionparticipants (Number)
Screening: General (n=183, 192)Week 8: General (n=146, 154)Week 17: General (n=170, 174)Screening: Skin (n=183, 192)Week 8: Skin (n=146, 154)Week 17: Skin (n=170, 174)Screening: Chest (n=183, 192)Week 8: Chest (n=146, 154)Week 17: Chest (n=170, 174)Screening: Pulses (n=183, 191)Week 8: Pulses (n=146, 153)Week 17: Pulses (n=170, 174)Screening: Lungs (n=183, 192)Week 8: Lungs (n=146, 154)Week 17: Lungs (n=170, 174)Screening: Heart (n=183, 192)Week 8: Heart (n=146, 154)Week 17: Heart (n=170, 174)Screening: Abdomen (n=183, 192)Week 8: Abdomen (n=146, 154)Week 17: Abdomen (n=170, 174)Screening: Extremities (n=183, 192)Week 8: Extremities (n=146, 154)Week 17: Extremities (n=170, 174)Screening: Head (n=183, 192)Week 8: Head (n=146, 154)Week 17: Head (n=170, 174)Screening: Ears (n=181, 191)Week 8: Ears (n=145, 154)Week 17: Ears (n=170, 174)Screening: Eyes (n=183, 192)Week 8: Eyes (n=146, 154)Week 17: Eyes (n=170, 174)Screening: Nose (n=183, 192)Week 8: Nose (n=146, 154)Week 17: Nose (n=170, 174)Screening: Throat (n=183, 192)Week 8: Throat (n=146, 154)Week 17: Throat (n=170, 174)
Placebo1376372032432112635433626462623522303756341362
Pregabalin16121130202162432122334411985028292021011289033345

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Number of Participants With Abnormal Laboratory Test Findings

Laboratory tests included hematology, chemistry, cluster of differentiation 4 (CD4) count and cluster of differentiation 8 (CD8) count, HIV plasma viral load, B12, Venereal Disease Research Laboratory (VDRL), toxic screens for drugs and alcohol, reflex thyroid-stimulating hormone (TSH), urinalysis. Number of participants with a laboratory abnormality meeting specified criteria while on study treatment or during lag time was reported. (NCT01049217)
Timeframe: Screening up to Week 17

Interventionparticipants (Number)
Pregabalin165
Placebo170

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Body Weight

(NCT01049217)
Timeframe: Screening, Week 1, 4, 8, 12, 16, 17

,
Interventionkilogram (Mean)
Screening (n=183, 192)Week 1 (n=183, 192)Week 4 (n=158, 169)Week 8 (n=146, 154)Week 12 (n=127, 137)Week 16 (n=170, 176)Week 17 (n=167, 171)
Placebo72.072.571.872.172.772.572.6
Pregabalin70.871.272.673.174.073.673.6

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Absenteeism and Presenteeism Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire

WPAI: 6-question participant rated questionnaire to determine the degree to which SHP affected work productivity while at work and affected activities outside of work. It assesses amount of absenteeism, presenteeism and daily activity impairment attributable to a HIV neuropathy pain. Question 2 and 3 assesses absenteeism as: Hours of work missed in past 7 days due to leg/foot pain or other reason, respectively. Question 4 assesses presenteeism as: Hours of work performed in past 7 days. A participant who had responded 'no' to question 1 regarding employment status reported hours of work and as this was a self-reported questionnaire the source data were included. (NCT01049217)
Timeframe: Baseline, Week 16, 17

,
Interventionhours (Mean)
Baseline, Hours Missed,Leg/Foot Pain (n=57, 58)Week 16, Hours Missed,Leg/Foot Pain (n=57, 54)Week 17, Hours Missed,Leg/Foot Pain (n=58, 48)Baseline, Hours Missed,Other Reason (n=57, 58)Week 16, Hours Missed,Other Reason (n=57, 54)Week 17, Hours Missed,Other Reason (n=58, 48)Baseline: Hours Worked (n=57, 58)Week 16: Hours Worked (n=57, 54)Week 17: Hours Worked (n=58, 48)
Placebo4.862.411.277.316.742.9428.7632.7238.15
Pregabalin5.582.053.0312.777.537.7232.5437.4434.83

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Total Activity Counts

"Activity counts are the units of motion. It is equal to the sum of peak accelerations each second during the epoch (60 seconds). Total activity counts per day is the sum of the activity counts for each epoch (60 seconds) during the day (non sleep period). A total activity count was determined by actigraphy. Actigraphy was performed with an accelerometer that was worn on the wrist like a watch. It was programmed to record movements while the device was being worn. Endpoint was the last observation for a participant assessed using specified imputation method." (NCT01049217)
Timeframe: Baseline (Day -14 to 1), Week 1 through Week 4, Week 12 through Week 16, Endpoint (up to Week 16)

Interventionactivity counts per day (Least Squares Mean)
Pregabalin297350
Placebo305787

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Sleep Fragmentation Index (SFI)

SFI is a measure to quantify sleep restlessness. SFI calculated from analysis of the periods that participant was not moving (immobile bouts). It is number of immobile bouts that were exactly 1 minute long divided by total number of immobile bouts. Value ranges from 0-100 percent, with low number representing more restful sleep. SFI determined by actigraphy. Actigraphy was performed with an accelerometer that was worn on wrist like a watch. It was programmed to record movements while device was being worn. Endpoint was the last observation for a participant assessed using imputation method. (NCT01049217)
Timeframe: Baseline (Day -14 to 1), Week 1 through Week 4, Week 12 through Week 16, Endpoint (up to Week 16)

Interventionpercentage of immobile bouts (Least Squares Mean)
Pregabalin18.57
Placebo19.60

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Sleep Efficiency

Sleep efficiency is the time spent asleep divided by total time between sleep onset and sleep end, multiplied by 100. Sleep efficiency was determined by actigraphy. Actigraphy was performed with an accelerometer that was worn on the wrist like a watch. It was programmed to record movements while the device was being worn. Endpoint was the last observation for a participant assessed using specified imputation method. (NCT01049217)
Timeframe: Baseline (Day -14 to 1), Week 1 through Week 4, Week 12 through Week 16, Endpoint (up to Week 16)

InterventionPercent time between sleep onset and end (Least Squares Mean)
Pregabalin85.80
Placebo84.84

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Percentage Day Time Above Sedentary Level

"Percentage of time above sedentary level is number of epochs (60 seconds) with greater than (>) 200 activity counts per minute divided by total number of epochs during the day (non sleep period) multiplied by 100. This was determined by actigraphy. Actigraphy was performed with an accelerometer that was worn on the wrist like a watch. It was programmed to record movements while the device was being worn. Endpoint was the last observation for a participant assessed using specified imputation method." (NCT01049217)
Timeframe: Baseline (Day -14 to 1), Week 1 through Week 4, Week 12 through Week 16, Endpoint (up to Week 16)

Interventionpercentage of day time (Least Squares Mean)
Pregabalin52.43
Placebo52.28

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Weekly Mean Sleep Interference Score (Double-Blind Phase)

Weekly mean sleep interference score was defined as the mean of the daily sleep interference diary ratings split into 7 day intervals. Participants rated how painful DPN has interfered with their sleep during the past 24 hours on an 11-point numeric rating scale ranging from 0 = does not interfere with sleep to 10 = completely interferes (unable to sleep due to pain). (NCT01057693)
Timeframe: DB Baseline, Week 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19

,
Interventionunits on a scale (Mean)
DB Baseline (n= 147, 147)Week 7 (n= 144, 145)Week 8 (n= 143, 142)Week 9 (n= 140, 134)Week 10 (n= 138, 133)Week 11 (n= 138, 128)Week 12 (n= 136, 123)Week 13 (n= 134, 122)Week 14 (n= 133, 122)Week 15 (n= 132, 120)Week 16 (n= 132, 120)Week 17 (n= 129, 116)Week 18 (n= 128, 116)Week 19 (n= 121, 111)
Placebo2.32.73.02.72.72.52.42.32.32.32.32.22.32.2
Pregabalin DB2.52.62.62.32.32.22.32.32.32.42.32.22.32.3

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Weekly Mean Pain Scores (Single-Blind Phase)

Weekly mean pain score was defined as the mean of the daily diary pain ratings split into 7 day intervals. Participants rated their DPN pain over the past 24 hours on an 11-point numeric rating scale ranging from 0 = no pain to 10 = worst possible pain. A rating of 1-3 was considered as mild pain; 4-6 = moderate pain; and 7-10 = severe pain. (NCT01057693)
Timeframe: Week 1, 2, 3, 4, 5, 6

Interventionunits on a scale (Mean)
Week 1 (n= 657)Week 2 (n= 636)Week 3 (n= 613)Week 4 (n= 585)Week 5 (n= 565)Week 6 (n= 548)
Pregabalin SB6.05.44.94.64.54.3

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Weekly Mean Pain Scores (Double-Blind Phase)

Weekly mean pain score was defined as the mean of the daily diary pain ratings split into 7 day intervals. Participants rated their DPN pain over the past 24 hours on an 11-point numeric rating scale ranging from 0 = no pain to 10 = worst possible pain. A rating of 1-3 was considered as mild pain; 4-6 = moderate pain; and 7-10 = severe pain. SB baseline refers to the last 7 pain diary entries up to and including Day 1. DB baseline refers to the last 7 pain diary entries up to and including DB Day 1. (NCT01057693)
Timeframe: DB Baseline, Week 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19

,
Interventionunits on a scale (Mean)
DB Baseline (n= 147, 147)Week 7 (n= 144, 145)Week 8 (n= 143, 142)Week 9 (n= 140, 133)Week 10 (n= 138, 133)Week 11 (n= 138, 128)Week 12 (n= 135, 123)Week 13 (n= 134, 122)Week 14 (n= 133, 122)Week 15 (n= 131, 118)Week 16 (n= 132, 118)Week 17 (n= 128, 115)Week 18 (n= 128, 115)Week 19 (n= 115, 104)
Placebo3.03.33.63.43.43.33.23.13.13.03.02.92.92.8
Pregabalin DB3.13.23.23.03.02.92.92.92.92.92.82.72.82.7

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Quality of Life Questionnaire- Diabetic Neuropathy (QOL-DN) (Single-Blind Phase)

QOL-DN: 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on the quality of life of participants with diabetic neuropathy. Consists of 5 domains: Physical functioning(Ph Fn)/large fiber (sum of item 8, 11, 13-15, 24, 27-35; range -4 to 56); Activities of daily living (sum of item 12, 22, 23, 25, 26; range 0 to 20); Symptoms (sum of item 1-7, 9; range 0 to 32); Small fiber (sum of item 10, 16, 17, 18; range 0 to 16); Autonomic (sum of item 19, 20, 21; range 0 to 12) and total QOL score (sum of items 1-35) range: -4 to 136. Higher score implied worse QOL. (NCT01057693)
Timeframe: SB Baseline, Week 6

Interventionunits on a scale (Mean)
SB Baseline: Total QOL Scores (n= 665)SB Baseline: Ph Fn/Large Fiber (n= 665)SB Baseline: Activities of Daily Living (n= 665)SB Baseline: Symptoms (n= 665)SB Baseline: Small Fiber (n= 665)SB Baseline: Autonomic (n= 665)Week 6: Total QOL Scores (n= 618)Week 6: Ph Fn/Large Fiber (n= 618)Week 6: Activities of Daily Living (n= 618)Week 6: Symptoms (n= 618)Week 6: Small Fiber (n= 618)Week 6: Autonomic (n= 618)
Pregabalin SB42.623.93.210.83.41.329.315.82.27.82.31.1

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Quality of Life Questionnaire- Diabetic Neuropathy (QOL-DN) (Double-Blind Phase)

QOL-DN: 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on the quality of life of participants with diabetic neuropathy. Consists of 5 domains: Physical functioning(Ph Fn)/large fiber (sum of item 8, 11, 13-15, 24, 27-35; range -4 to 56); Activities of daily living (sum of item 12, 22, 23, 25, 26; range 0 to 20); Symptoms (sum of item 1-7, 9; range 0 to 32); Small fiber (sum of item 10, 16, 17, 18; range 0 to 16); Autonomic (sum of item 19, 20, 21; range 0 to 12) and total QOL score (sum of items 1-35) range: -4 to 136. Higher score implied worse QOL. (NCT01057693)
Timeframe: Week 19

,
Interventionunits on a scale (Mean)
Total QOL ScoresPh Fn/Large FiberActivities of Daily LivingSymptomsSmall FiberAutonomic
Placebo24.112.91.86.61.71.1
Pregabalin DB21.911.41.86.11.80.9

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Hospital Anxiety and Depression Scale (HADS) (Single-Blind Phase)

HADS: self-administered questionnaire, consists of 2 sub-scales; measuring anxiety (HADS-A), and depression (HADS-D). Each sub-scale consists of 7 items on which participants responded as to how each item applies to them on a 4-point scale ranging from 0 (no anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score range for each sub-scale = 0 to 21, where higher score indicates more severe anxiety or depression. (NCT01057693)
Timeframe: SB Baseline, Week 6

Interventionunits on a scale (Mean)
SB Baseline: HADS-A (n= 663)SB Baseline: HADS-D (n= 663)Week 6: HADS-A (n= 616)Week 6: HADS-D (n= 616)
Pregabalin SB5.85.34.64.0

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Medical Outcomes Study -Sleep Scale (MOS-SS) (Double-Blind Phase)

Participant-rated 12-item questionnaire to assess constructs of sleep over past week; 7 subscales: sleep disturbance (range 0-100), snoring (range 0-100), awaken short of breath (SOB) or with headache (range 0-100), sleep adequacy (range 0-100), somnolence (range: 0-100); sleep quantity (range: 0-24), optimal sleep (yes/no), and 9 item index measures of sleep disturbance provide composite scores: sleep problems index (range 0-100). Except adequacy, optimal sleep and quantity, higher scores=more impairment. (NCT01057693)
Timeframe: Week 19

,
Interventionunits on a scale (Mean)
Sleep disturbanceSnoringAwaken SOB or With HeadacheQuantity of sleepSleep AdequacySomnolenceSleep Problems Index
Placebo30.935.412.26.559.030.630.9
Pregabalin DB26.641.912.36.759.229.728.5

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Endpoint Mean Sleep Interference Score (Double-Blind Phase)

Endpoint mean sleep interference score was defined as the mean of the last 7 sleep interference diaries while receiving DB treatment. Participants rated how painful DPN has interfered with their sleep during the past 24 hours on an 11-point numeric rating scale ranging from 0 = does not interfere to 10 = completely interferes (unable to sleep due to pain). (NCT01057693)
Timeframe: Week 19

Interventionunits on a scale (Mean)
Pregabalin DB2.4
Placebo2.4

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Endpoint Mean Sleep Interference Score (Single-Blind Phase)

Endpoint mean sleep interference score was defined as the mean of the last 7 sleep interference diaries while receiving SB treatment. Participants rated how painful DPN has interfered with their sleep during the past 24 hours on an 11-point numeric rating scale ranging from 0 = does not interfere to 10 = completely interferes (unable to sleep due to pain). (NCT01057693)
Timeframe: Week 6

Interventionunits on a scale (Mean)
Pregabalin SB3.8

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Number of Participants With Optimal Sleep Assessed Using Medical Outcomes Study-Sleep Scale (MOS-SS) (Double-Blind Phase)

MOS-SS: participant-rated 12 item questionnaire to assess constructs of sleep over past week. It included 7 subscales: sleep disturbance, snoring, awaken short of breath or with headache, sleep adequacy, somnolence, sleep quantity, optimal sleep, and 9 item index measures of sleep disturbance provide composite scores: sleep problems index. Participants responded whether their sleep was optimal or not optimal by choosing yes or no. (NCT01057693)
Timeframe: Week 19

Interventionparticipants (Number)
Pregabalin DB67
Placebo60

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Percentage of Participants With At Least 30 Percent and 50 Percent Reduction in Mean Pain Score (Single-Blind Phase)

Mean pain score was defined as the mean of the last 7 daily diary pain ratings. Participants rated their DPN pain over the past 24 hours on an 11-point numeric rating scale ranging from 0 = no pain to 10 = worst possible pain. A rating of 1-3 was considered as mild pain; 4-6 = moderate pain; and 7-10 = severe pain. Percentage of participants who had at least 30% and 50% pain reduction from SB baseline to Week 6 is reported. SB baseline refers to the last 7 pain diary entries up to and including Day 1. (NCT01057693)
Timeframe: Week 6

Interventionpercentage of participants (Number)
>=30 % Reduction>=50 % Reduction
Pregabalin SB49.9227.22

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Percentage of Participants With At Least 30 Percent and 50 Percent Reduction in Mean Pain Score (Double-Blind Phase)

Mean pain score was defined as the mean of the last 7 daily diary pain ratings. Participants rated their DPN pain over the past 24 hours on an 11-point numeric rating scale ranging from 0 = no pain to 10 = worst possible pain. A rating of 1-3 was considered as mild pain; 4-6 = moderate pain; and 7-10 = severe pain. Percentage of participants who had at least 30% and 50% pain reduction from SB baseline to Week 19 is reported. (NCT01057693)
Timeframe: Week 19

,
Interventionpercentage of participants (Number)
>=30% Reduction>=50% Reduction
Placebo79.1955.03
Pregabalin DB82.9962.59

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Medical Outcomes Study -Sleep Scale (MOS-SS) (Single-Blind Phase)

Participant-rated 12-item questionnaire to assess constructs of sleep over past week; 7 subscales: sleep disturbance (range 0-100), snoring (range 0-100), awaken short of breath (SOB) or with headache (range 0-100), sleep adequacy (range 0-100), somnolence (range: 0-100); sleep quantity (range: 0-24), optimal sleep (yes/no), and 9 item index measures of sleep disturbance provide composite scores: sleep problems index (range 0-100). Except adequacy, optimal sleep and quantity, higher scores=more impairment. (NCT01057693)
Timeframe: SB Baseline, Week 6

Interventionunits on a scale (Mean)
SB Baseline: Sleep disturbance (n= 665)SB Baseline: Snoring (n= 664)SB Baseline: Awaken SOB or With Headache (n=665)SB Baseline: Quantity of sleep (n=663)SB Baseline: Sleep Adequacy (n=665)SB Baseline: Somnolence (n=665)SB Baseline: Sleep Problems Index (n=665)Week 6: Sleep disturbance (n= 621)Week 6: Snoring (n= 621)Week 6: Awaken SOB or With Headache (n= 621)Week 6: Quantity of sleep (n= 615)Week 6: Sleep Adequacy (n= 621)Week 6: Somnolence (n= 621)Week 6: Sleep Problems Index (n= 621)
Pregabalin SB53.644.718.95.939.242.649.233.639.912.66.652.634.234.4

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Patient Global Impression of Change (PGIC) (Double-Blind Phase)

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Number of participants in each category are reported. (NCT01057693)
Timeframe: Week 19

,
Interventionparticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much Worse
Placebo23462820683
Pregabalin DB23502728910

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Patient Global Evaluation of Study Medication (GESM) (Single-Blind Phase)

"GESM: single-item, self-administered treatment satisfaction questionnaire. Participants answered how would you rate the study medication you received for pain? on a 7-point scale ranging from 1 (very satisfied) to 7 (very dissatisfied). Number of participants in each category are reported." (NCT01057693)
Timeframe: Week 6

Interventionparticipants (Number)
Very SatisfiedSomewhat SatisfiedSlightly SatisfiedNeither Satisfied Nor DissatisfiedSlightly DissatisfiedSomewhat DissatisfiedVery Dissatisfied
Pregabalin SB2411816671222119

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Pain Visual Analog Scale (VAS) (Double-Blind Phase)

Participants rated their pain on a 100 millimeter (mm) Visual Analog Scale (VAS) ranging from 0 mm = no pain to 100 mm = worst possible pain. (NCT01057693)
Timeframe: Week 19

Interventionmm (Mean)
Pregabalin DB25.3
Placebo30.1

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Time to Loss of Pain Response (Double-Blind Phase)

Time to loss of pain response (based on the daily pain diary data) during the DB treatment phase was analyzed using survival analysis technique. Loss of pain response was defined as less than (<) 15% pain response relative to the SB baseline. SB baseline refers to the last 7 pain diary entries up to and including Day 1. (NCT01057693)
Timeframe: SB Baseline up to Week 19

Interventiondays (Median)
Pregabalin DBNA
PlaceboNA

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Brief Pain Inventory-Short Form (BPI-sf) (Double-Blind Phase)

BPI-sf: self-administered questionnaire developed to assess severity, impact of pain on daily functions, consisted of 5 questions. Questions 1-4 measured the severity of pain based on pain experienced over the past 24-hours on an 11-point scale ranged from 0 (no pain) to10 (worst possible pain). Question 5: 7 item subsets that measured level of interference of pain on daily functions on an 11-point scale ranged from 0 (does not interfere) to 10 (completely interferes). (NCT01057693)
Timeframe: Week 19

,
Interventionunits on a scale (Mean)
Pain SeverityPain Interference
Placebo3.02.4
Pregabalin DB2.62.0

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Brief Pain Inventory-Short Form (BPI-sf) (Single-Blind Phase)

BPI-sf: self-administered questionnaire developed to assess severity, impact of pain on daily functions, consisted of 5 questions. Questions 1-4 measured the severity of pain based on pain experienced over the past 24-hours on an 11-point scale ranged from 0 (no pain) to10 (worst possible pain). Question 5: 7 item subsets that measured level of interference of pain on daily functions on an 11-point scale ranged from 0 (does not interfere) to 10 (completely interferes). (NCT01057693)
Timeframe: SB Baseline, Week 6

Interventionunits on a scale (Mean)
SB Baseline: Pain Severity (n= 665)SB Baseline: Pain Interference (n= 665)Week 6: Pain Severity (n= 637)Week 6: Pain Interference (n= 637)
Pregabalin SB6.15.23.93.1

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Patient Global Impression of Change (PGIC) (Single-Blind Phase)

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Number of participants in each category are reported. (NCT01057693)
Timeframe: Week 6

Interventionparticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much Worse
Pregabalin SB932211946529153

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Number of Participants With Optimal Sleep Assessed Using Medical Outcomes Study-Sleep Scale (MOS-SS) (Single-Blind Phase)

MOS-SS: participant-rated 12 item questionnaire to assess constructs of sleep over past week. It included 7 subscales: sleep disturbance, snoring, awaken short of breath or with headache, sleep adequacy, somnolence, sleep quantity, optimal sleep, and 9 item index measures of sleep disturbance provide composite scores: sleep problems index. Participants responded whether their sleep was optimal or not optimal by choosing yes or no. (NCT01057693)
Timeframe: SB Baseline, Week 6

Interventionparticipants (Number)
SB BaselineWeek 6
Pregabalin SB180266

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Pain Visual Analog Scale (VAS) (Single-Blind Phase)

Participants rated their pain on a 100 millimeter (mm) Visual Analog Scale (VAS) ranging from 0 mm = no pain to 100 mm = worst possible pain. (NCT01057693)
Timeframe: SB Baseline, Week 6

Interventionmm (Mean)
SB Baseline (n= 665)Week 6 (n= 621)
Pregabalin SB68.139.8

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Hospital Anxiety and Depression Scale (HADS) (Double-Blind Phase)

HADS: self-administered questionnaire, consists of 2 sub-scales; measuring anxiety (HADS-A), and depression (HADS-D). Each sub-scale consists of 7 items on which participants responded as to how each item applies to them on a 4-point scale ranging from 0 (no anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score range for each sub-scale = 0 to 21, where higher score indicates more severe anxiety or depression. (NCT01057693)
Timeframe: Week 19

,
Interventionunits on a scale (Mean)
HADS-AHADS-D
Placebo4.33.5
Pregabalin DB3.83.3

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Patient Global Evaluation of Study Medication (GESM) (Double-Blind Phase)

"GESM: single-item, self-administered treatment satisfaction questionnaire. Participants answered how would you rate the study medication you received for pain? on a 7-point scale ranging from 1 (very satisfied) to 7 (very dissatisfied). Number of participants in each category are reported." (NCT01057693)
Timeframe: Week 19

,
Interventionparticipants (Number)
Very SatisfiedSomewhat SatisfiedSlightly SatisfiedNeither Satisfied Nor DissatisfiedSlightly DissatisfiedSomewhat DissatisfiedVery Dissatisfied
Placebo64361410262
Pregabalin DB803596512

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Change From Single-Blind Baseline in Mean Pain Score at Week 6 During Single-Blind Phase

Mean pain score was defined as the mean of the last 7 daily diary pain ratings. Participants rated their DPN pain over the past 24 hours on an 11-point numeric rating scale ranging from 0 = no pain to 10 = worst possible pain. A rating of 1-3 was considered as mild pain; 4-6 = moderate pain; and 7-10 = severe pain. SB baseline refers to the last 7 pain diary entries up to and including Day 1. (NCT01057693)
Timeframe: SB Baseline, Week 6 (SB Phase)

Interventionunits on a scale (Mean)
SB Baseline (n= 663)Change at Week 6 (SB Phase) (n= 658)
Pregabalin SB6.7-2.2

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Weekly Mean Sleep Interference Score (Single-Blind Phase)

Weekly mean sleep interference score was defined as the mean of the daily sleep interference diary ratings split into 7 day intervals. Participants rated how painful DPN has interfered with their sleep during the past 24 hours on an 11-point numeric rating scale ranging from 0 = does not interfere with sleep to 10 = completely interferes (unable to sleep due to pain). SB baseline refers to the last 7 pain diary entries up to and including Day 1. (NCT01057693)
Timeframe: SB Baseline, Week 1, 2, 3, 4, 5, 6

Interventionunits on a scale (Mean)
SB Baseline (n= 663)Week 1 (n= 657)Week 2 (n= 636)Week 3 (n= 614)Week 4 (n= 589)Week 5 (n= 566)Week 6 (n= 548)
Pregabalin SB5.95.14.54.13.83.73.6

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Change From Single-Blind Baseline in Mean Pain Score at Week 19 During Double-Blind Phase

Mean pain score was defined as the mean of the last 7 daily diary pain ratings. Participants rated their DPN pain over the past 24 hours on an 11-point numeric rating scale ranging from 0 = no pain to 10 = worst possible pain. A rating of 1-3 was considered as mild pain; 4-6 = moderate pain; and 7-10 = severe pain. SB baseline refers to the last 7 pain diary entries up to and including Day 1. (NCT01057693)
Timeframe: SB Baseline, Week 19 (DB Phase)

,
Interventionunits on a scale (Mean)
Single-Blind BaselineChange at Week 19 (DB Phase)
Placebo6.7-3.5
Pregabalin DB6.8-3.9

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Percentage of Participants With a Reduction of Greater Than or Equal to 50% on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 16 Endpoint

BPI Modified Short Form 24-Hour average pain item score is a self-reported scale that measures the severity of pain based on the average pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). (NCT01089556)
Timeframe: Week 8 through Week 16

Interventionpercentage of participants (Number)
Combination52.1
Monotherapy39.3

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Percentage of Participants With a Reduction of Greater Than or Equal to 30% on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 8 Endpoint

BPI Modified Short Form 24-Hour average pain item score is a self-reported scale that measures the severity of pain based on the average pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). (NCT01089556)
Timeframe: Baseline through Week 8

Interventionpercentage of participants (Number)
Duloxetine52.0
Pregabalin36.9

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Percentage of Participants With a Decrease of Greater Than or Equal to 2 Points on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 8 Endpoint

BPI Modified Short Form 24-Hour average pain item score is a self-reported scale that measures the severity of pain based on the average pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). (NCT01089556)
Timeframe: Baseline through Week 8

Interventionpercentage of participants (Number)
Duloxetine57.1
Pregabalin45.7

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Percentage of Participants With a Decrease of Greater Than or Equal to 2 Points on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 16 Endpoint

BPI Modified Short Form 24-Hour average pain item score is a self-reported scale that measures the severity of pain based on the average pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). (NCT01089556)
Timeframe: Week 8 through Week 16

Interventionpercentage of participants (Number)
Combination66.7
Monotherapy64.4

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Patient Global Impression of Improvement (PGI-I) Score at Week 8 Endpoint

Measures participant's perception of improvement at the time of assessment compared with the start of treatment. The score ranges from 1 (very much better) to 7 (very much worse). Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, visit, and treatment*visit. (NCT01089556)
Timeframe: Week 8

Interventionunits on a scale (Least Squares Mean)
Duloxetine2.601
Pregabalin2.944

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Patient Global Impression of Improvement (PGI-I) Score at Week 16 Endpoint

Measures participant's perception of improvement at the time of assessment compared with the start of treatment for Study Period III. The score ranges from 1 (very much better) to 7 (very much worse). Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit, baseline*visit and treatment in Study Period II. (NCT01089556)
Timeframe: Week 16

Interventionunits on a scale (Least Squares Mean)
Combination2.256
Monotherapy2.350

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Number of Participants With Treatment Emergent Adverse Events (TEAEs) Between Week 8 and Week 16 Endpoint

TEAEs in Study Period III are events that began or worsened after Week 8 compared with the period before Week 8. (NCT01089556)
Timeframe: Week 8 through Week 16

Interventionparticipants (Number)
Combination62
Monotherapy57

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Number of Participants With Treatment Emergent Adverse Events (TEAE) Between Baseline and Week 8 Endpoint

TEAEs in Study Period II are events that began or worsened after Week 0 compared with the period before Week 0. (NCT01089556)
Timeframe: Baseline through Week 8

Interventionparticipants (Number)
Duloxetine223
Pregabalin232

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Number of Participants Who Discontinued From Study Between Week 8 and Week 16 Endpoint

(NCT01089556)
Timeframe: Week 8 through Week 16

Interventionparticipants (Number)
Combination21
Monotherapy21

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Number of Participants Who Discontinued From Study Between Baseline and Week 8 Endpoint

(NCT01089556)
Timeframe: Baseline through Week 8

Interventionparticipants (Number)
Duloxetine68
Pregabalin70

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Mean Change in Heart Rate From Week 8 to Week 16 Endpoint

Least Squares (LS) mean values are controlled for treatment, site, baseline value, treatment*site and treatment in Study Period II. (NCT01089556)
Timeframe: Week 8, Week 16

Interventionbeats per minute (bpm) (Least Squares Mean)
Combination1.025
Monotherapy1.968

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Mean Change in Heart Rate From Baseline to Week 8 Endpoint

Least Squares (LS) mean values are controlled for treatment, site, baseline value, and treatment*site. (NCT01089556)
Timeframe: Baseline, Week 8

Interventionbeats per minute (bpm) (Least Squares Mean)
Duloxetine0.839
Pregabalin-2.478

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Mean Change From Week 8 to Week 16 Endpoint on the Neuropathic Pain Symptom Inventory (NPSI) Questionnaire

The NPSI is a 12-item self-administered questionnaire to assess 5 different dimensions of neuropathic pain: superficial spontaneous burning pain, deep spontaneous pressing pain, paroxysmal pain, evoked pains, and paresthesias/dysesthesias. A total score ranges from 0 to 100. Higher score indicates a greater intensity of pain. Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit, baseline*visit and treatment in Study Period II. (NCT01089556)
Timeframe: Week 8, Week 16

Interventionunits on a scale (Least Squares Mean)
Combination-13.734
Monotherapy-11.801

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Mean Change From Week 8 to Week 16 Endpoint in Sheehan Disability Scale (SDS)

The SDS is completed by the participant and is used to assess the effect of the participant's symptoms on their work (Item 1), social (Item 2), and family life (Item 3). Each item is measured on a 0 (not at all) to 10 (extremely) point scale with higher values indicating greater disruption. Total scores is the sum of the 3 items and range from 0 to 30 with higher values indicating greater disruption in the participant's work/social/family life. Least Squares (LS) Mean values are controlled for treatment, site, baseline value, treatment*site and treatment in Study Period II. (NCT01089556)
Timeframe: Week 8, Week 16

Interventionunits on a scale (Least Squares Mean)
Combination-2.625
Monotherapy-2.431

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Mean Change From Week 8 to Week 16 Endpoint in Items of the Brief Pain Inventory (BPI) Modified Short Form Worst Pain Score

BPI Modified Short Form worst pain score is a self-reported scale that measures the severity of pain based on the worst pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit, baseline*visit and treatment in Study Period II. (NCT01089556)
Timeframe: Week 8, Week 16

Interventionunits on a scale (Least Squares Mean)
Combination-2.374
Monotherapy-2.371

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Mean Change From Baseline to Week 8 Endpoint on the Neuropathic Pain Symptom Inventory (NPSI) Questionnaire

The NPSI is a 12-item self-administered questionnaire to assess 5 different dimensions of neuropathic pain: superficial spontaneous burning pain, deep spontaneous pressing pain, paroxysmal pain, evoked pains, and paresthesias/dysesthesias. A total score ranges from 0 to 100. Higher score indicates a greater intensity of pain. Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit and baseline*visit. (NCT01089556)
Timeframe: Baseline, Week 8

Interventionunits on a scale (Least Squares Mean)
Duloxetine-19.442
Pregabalin-14.684

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Mean Change From Baseline to Week 8 Endpoint in Sheehan Disability Scale (SDS)

The SDS is completed by the participant and is used to assess the effect of the participant's symptoms on their work (Item 1), social (Item 2), and family life (Item 3). Each item is measured on a 0 (not at all) to 10 (extremely) point scale with higher values indicating greater disruption. Total scores is the sum of the 3 items and range from 0 to 30 with higher values indicating greater disruption in the participant's work/social/family life. Least Squares (LS) mean values are controlled for treatment, site, baseline value and treatment*site. (NCT01089556)
Timeframe: Baseline, Week 8

Interventionunits on a scale (Least Squares Mean)
Duloxetine-4.387
Pregabalin-3.367

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Clinical Global Impression of Improvement (CGI-I) at Week 8 Endpoint

Measures clinician's perception of participant improvement at the time of assessment compared with the start of treatment. Scores range from 1 (very much better) to 7 (very much worse). Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, visit, and treatment*visit. (NCT01089556)
Timeframe: Week 8

Interventionunits on a scale (Least Squares Mean)
Duloxetine2.508
Pregabalin2.848

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Clinical Global Impression of Improvement (CGI-I) at Week 16 Endpoint

Measures clinician's perception of participant improvement at the time of assessment compared with the start of treatment for Study Period III. Scores range from 1 (very much better) to 7 (very much worse). Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit, baseline*visit and treatment in Study Period II. (NCT01089556)
Timeframe: Week 16

Interventionunits on a scale (Least Squares Mean)
Combination2.286
Monotherapy2.359

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Change From Week 8 to Week 16 Endpoint in 24 Hour Average Pain Item Score on the Brief Pain Inventory (BPI) Modified Short Form

BPI Modified Short Form 24-Hour average pain item score is a self-reported scale that measures the severity of pain based on the average pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit, baseline*visit and treatment in Study Period II. (NCT01089556)
Timeframe: Week 8, Week 16

Interventionunits on a scale (Least Squares Mean)
Combination-2.353
Monotherapy-2.161

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Average Number of Hours Worked for Pay Per Week Week 8 Through Week 16

Data presented are the average number of hours worked for pay per week during the last 8 weeks. (NCT01089556)
Timeframe: Week 8 through Week 16

Interventionhours (Mean)
Combination39.8
Monotherapy34.7

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Average Number of Hours Worked for Pay Per Week Baseline Through Week 8

Data presented are the average number of hours worked for pay per week during the last 8 weeks. (NCT01089556)
Timeframe: Baseline through Week 8

Interventionhours (Mean)
Duloxetine37.6
Pregabalin42.4

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Mean Change From Baseline to Week 8 Endpoint in 24 Hour Average Pain Item Score on the Brief Pain Inventory (BPI) Modified Short Form

BPI Modified Short Form 24-Hour average pain item score is a self-reported scale that measures the severity of pain based on the average pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit and baseline*visit. (NCT01089556)
Timeframe: Baseline, Week 8

Interventionunits on a scale (Least Squares Mean)
Duloxetine-2.295
Pregabalin-1.682

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Resource Utilization (Number of Days Hospitalized, Number of Days of Sick Leave) Week 8 Through Week 16

Data presented are the number of days hospitalized and work/school missed (sick leave) due to diabetic peripheral neuropathic pain (DPNP) during the last 8 weeks. (NCT01089556)
Timeframe: Week 8 through Week 16

,
Interventiondays (Mean)
Days hospitalized (n=140, 146)Days of sick leave (n=41, 36)
Combination00.1
Monotherapy00.4

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Percentage of Participants With a Reduction of Greater Than or Equal to 30% on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 16 Endpoint

BPI Modified Short Form 24-Hour average pain item score is a self-reported scale that measures the severity of pain based on the average pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). (NCT01089556)
Timeframe: Week 8 through Week 16

Interventionpercentage of participants (Number)
Combination61.8
Monotherapy55.8

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Resource Utilization (Number of Days Hospitalized, Number of Days of Sick Leave) Baseline Through Week 8

Data presented are the number of days hospitalized and work/school missed (sick leave) due to diabetic peripheral neuropathic pain (DPNP) during the last 8 weeks. (NCT01089556)
Timeframe: Baseline through Week 8

,
Interventiondays (Mean)
Days hospitalizedDays of sick leave (n=108, 101)
Duloxetine01.9
Pregabalin00.3

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Mean Change in Blood Pressure (BP) From Week 8 to Week 16 Endpoint

Least Squares (LS) mean values are controlled for treatment, site, baseline value, treatment*site and treatment in Study Period II. (NCT01089556)
Timeframe: Week 8, Week 16

,
Interventionmillimeter of mercury (mm Hg) (Least Squares Mean)
Systolic BPDiastolic BP
Combination-1.206-0.555
Monotherapy0.124-0.551

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Mean Change in Blood Pressure (BP) From Baseline to Week 8 Endpoint

Least Squares (LS) mean values are controlled for treatment, site, baseline value, and treatment*site. (NCT01089556)
Timeframe: Baseline, Week 8

,
Interventionmillimeter of mercury (mm Hg) (Least Squares Mean)
Systolic BPDiastolic BP
Duloxetine-3.702-0.816
Pregabalin-1.682-0.951

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Mean Change From Week 8 to Week 16 Endpoint in Hospital Anxiety and Depression Scale (HADS)

A 14-item questionnaire with 2 subscales: anxiety and depression. Each item is rated on a 4-point scale (0-3), giving maximum scores of 21 for anxiety and for depression. Scores of 11 or more on either subscale are considered to be a significant case of psychological morbidity, while scores of 8-10 represent 'borderline' and 0-7 represent 'normal.' Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit, baseline*visit and treatment in Study Period II. (NCT01089556)
Timeframe: Week 8, Week 16

,
Interventionunits on a scale (Least Squares Mean)
Anxiety Subscale Score (n=169, 169)Depression Subscale Score (n=168, 170)
Combination-0.860-0.461
Monotherapy-0.245-0.083

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Mean Change From Baseline to Week 8 Endpoint in Hospital Anxiety and Depression Scale (HADS)

A 14-item questionnaire with 2 subscales: anxiety and depression. Each item is rated on a 4-point scale (0-3), giving maximum scores of 21 for anxiety and for depression. Scores of 11 or more on either subscale are considered to be a significant case of psychological morbidity, while scores of 8-10 represent 'borderline' and 0-7 represent 'normal.' Mixed-effects model repeated measures (MMRM) analysis was used to calculate Least Squares (LS) Mean and 95% Confidence Interval (CI). LS Mean values are controlled for treatment, site, baseline value, visit, treatment*visit and baseline*visit. (NCT01089556)
Timeframe: Baseline, Week 8

,
Interventionunits on a scale (Least Squares Mean)
Anxiety Subscale Score (n= 398, 400)Depression Subscale Score
Duloxetine-1.991-1.064
Pregabalin-1.433-0.642

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Percentage of Participants With a Reduction of Greater Than or Equal to 50% on Brief Pain Inventory (BPI) Modified Short Form 24-Hour Average Pain Item Score at Week 8 Endpoint

BPI Modified Short Form 24-Hour average pain item score is a self-reported scale that measures the severity of pain based on the average pain experienced over the past 24 hours. The severity scores range from 0 (no pain) to 10 (pain as severe as you can imagine). (NCT01089556)
Timeframe: Baseline through Week 8

Interventionpercentage of participants (Number)
Duloxetine40.3
Pregabalin27.8

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Colonic Compliance

"Colonic compliance is a measure of the stiffness of the colon, that is, what pressure was needed to reach half the maximum value of the colon. After the barostat balloon catheter was inserted in the mid-descending or junction of the sigmoid and descending colon, the balloon was inflated. After an initial conditioning distension to 20 mm Hg, colonic compliance was measured by step-wise inflation with increments of 4 mm Hg. Colonic compliance was analyzed by a validated linear interpolation method. The pressure at half maximum volume serves as a summary of colonic compliance." (NCT01094808)
Timeframe: Approximately 60 minutes after drug administration

Interventionmm Hg (Mean)
Pregabalin 75 mg17.6
Pregabalin 200 mg19.1
Placebo17.4

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Pain Sensation Rating Averaged Across 4 Distension Pressures (16, 24, 30, and 36 mg Hg)

The mm Hg distensions refer to the barostat balloon, which was placed in the mid-descending or junction of the sigmoid and descending colon. Pain sensation was measured by a 100 mm long Visual Analog Scale (VAS). The VAS does not have any pre-set marks between the extremes. For the pain VAS, 0 means no pain and 100 mm means extreme pain. The investigator measures the mark made by the participant in mm and records this for the value of pain. The values across the 4 distension pressures were averaged for this outcome measure. (NCT01094808)
Timeframe: Approximately 60 minutes after drug administration

Interventionmm (Mean)
Pregabalin 75 mg44.364
Pregabalin 200 mg35.301
Placebo43.286

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Postprandial Colonic Tone [Reported] as the Symmetric Percent [Change]in Baseline Colonic Barostat Balloon Volume

The symmetric percent reduction in baseline colonic barostat balloon volume during the first 30 minutes postprandially (PP) corrected for the preprandial (30 min) tone, (symmetric percent change= 100*log_e[fasting/PP]). A positive symmetric percent change reflects a decrease in barostat balloon volume indicating a reduction in colonic tone. (The balloon was placed in the mid-descending or junction of the sigmoid and descending colon.) (NCT01094808)
Timeframe: The first 30 minutes postprandially, and preprandial (30 minutes)

InterventionSymmetric percentage change (Mean)
Pregabalin 75 mg21.9
Pregabalin 200 mg35.3
Placebo27.8

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Sensory Threshold for Gas

The sensory threshold for first perception of gas was measured by stepwise inflation of the balloon in increments of 4 mm Hg at 60 second intervals. (The balloon was placed in the mid-descending or junction of the sigmoid and descending colon.) During this assessment participants were asked to report when they had the first perception of gas. The investigator recorded the threshold pressure at which the participants reported this sensation. (NCT01094808)
Timeframe: Approximately 60 minutes after drug administration

Interventionmm Hg (Mean)
Pregabalin 75 mg27.6
Pregabalin 200 mg34.3
Placebo34.5

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Sensory Threshold for Pain

The sensory threshold for first perception of pain was measured by stepwise inflation of the balloon in increments of 4 mm Hg at 60 second intervals. The balloon was placed in the mid-descending or junction of the sigmoid and descending colon. During this assessment participants were asked to report when they had the first perception of pain. The investigator recorded the threshold pressure at which the participants reported this sensation. (NCT01094808)
Timeframe: approximately 60 minutes after drug administration

Interventionmm Hg (Mean)
Pregabalin 75 mg45.8
Pregabalin 200 mg46.7
Placebo45.0

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Postprandial Motility Index Over 30 Minutes

The first 30 minute postprandial motility index (MI), MI = log_e [(number of contractions * sum of amplitudes)+1] (NCT01094808)
Timeframe: 30 minutes after the meal

,,
Interventionlog mm Hg (Mean)
Motility index proximal colon at 30 minutesMotility index distal colon at 30 minutes
Placebo11.4659.879
Pregabalin 200 mg11.7649.783
Pregabalin 75 mg11.2648.806

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Sensation Ratings for Gas at 16, 24, and 36 mm Hg Distension

The mm Hg distensions refer to the barostat balloon, which was placed in the mid-descending or junction of the sigmoid and descending colon. Gas sensation was measured by a 100 mm long Visual Analog Scale (VAS). The VAS does not have any pre-set marks between the extremes. For the gas VAS, 0 means no gas sensation and 100 mm means extreme gas sensation. The investigator measures the mark made by the participant in mm and records this for the value of either pain or gas. (NCT01094808)
Timeframe: Approximately 60 minutes after drug administration

,,
Interventionmm (Mean)
Sensation Ratings for Gas at 16 mm Hg distentionSensation Ratings for Gas at 24 mm Hg distentionSensation Ratings for Gas at 36 mm Hg distention
Placebo37.1442.7646.24
Pregabalin 200 mg30.0032.0036.58
Pregabalin 75 mg37.4044.0549.65

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Sensation Ratings for Pain at 16, 24, and 36 mm Hg Distension

The mm Hg distensions refer to the barostat balloon, which was placed in the mid-descending or junction of the sigmoid and descending colon. Pain sensation was measured by a 100 mm long Visual Analog Scale (VAS). The VAS does not have any pre-set marks between the extremes. For the pain VAS, 0 means no pain and 100 mm means extreme pain. The investigator measures the mark made by the participant in mm and records this for the value of pain. (NCT01094808)
Timeframe: Approximately 60 minutes after drug administration

,,
Interventionmm (Mean)
Sensation ratings of pain at 16 mm distensionSensation ratings of pain at 24 mm distensionSensation ratings of pain at 36 mm distension
Placebo34.2939.4847.62
Pregabalin 200 mg29.0036.8443.37
Pregabalin 75 mg28.7043.0044.30

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Sensation Ratings for Pain and Gas at 30 mm Hg Distension Above Baseline Operating Pressure

The 30 mm Hg distension refers to inflation of the balloon placed in placed in the mid-descending or junction of the sigmoid and descending colon. Pain and gas were individually measured by a 100 mm long Visual Analog Scale (VAS). The VAS does not have any pre-set marks between the extremes. For the pain VAS, 0 means no pain and 100 mm means extreme pain. For the gas VAS, 0 means no gas sensation and 100 mm means extreme gas sensation. The investigator measures the mark made by the participant in mm and records this for the value of either pain or gas. (NCT01094808)
Timeframe: Approximately 60 minutes after drug administration

,,
Interventionmm (Mean)
Sensation ratings for pain at 30 mm HgSensation ratings for gas at 30 mm Hg
Placebo46.046.6
Pregabalin 200 mg36.133.2
Pregabalin 75 mg47.453.4

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Gas Sensation Rating Averaged Across 4 Distension Pressures (16, 24, 30, and 36 mg Hg)

The mm Hg distensions refer to the barostat balloon, which was placed in the mid-descending or junction of the sigmoid and descending colon. Gas sensation was measured by a 100 mm long Visual Analog Scale (VAS). The VAS does not have any pre-set marks between the extremes. For the gas VAS, 0 means no gas sensation and 100 mm means extreme gas sensation. The investigator measures the mark made by the participant in mm and records this for the value of gas. The values across the 4 distension pressures were averaged for this outcome measure. (NCT01094808)
Timeframe: Approximately 60 minutes after drug administration

Interventionmm (Mean)
Pregabalin 75 mg43.379
Pregabalin 200 mg33.391
Placebo41.789

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Epithelial Healing Time

Determine if there was a reduction in healing time associated with pregabalin as seen with daily slit-lamp observation. Epithelial defect was measured at post-operative day 3, 5, 7, and 9 in each eye. A higher number of days required for healing indicates a worse outcome. (NCT01097577)
Timeframe: 5 days or more

,
InterventionDays (Mean)
Days to Heal OD (Right Eye)Days to Heal OS (Left Eye)
Lactose Capsule2.92.9
Pregabalin33.09

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Clinical Efficacy

Determine if clinical efficacy is achieved with pregabalin administered prior to PRK and continued for 5 days. This will be evaluated using the short-form McGill pain questionnaire (SF-MPQ). Primary efficacy is assessed on 100mm Visual Analog Scale (VAS); total range is 0 to 100. A score closer to zero indicates a better outcome of less pain. (NCT01097577)
Timeframe: 5 days

,
Interventionunits on a scale (Mean)
BaselineSurgery DayPostop day 1 morningPostop day 1 eveningPostop day 2 morningPostop day 2 eveningPostop day 3 morningPostop day 3 eveningPostop day 4 morning
Lactose Capsule1.3310.3410.2227.0929.2725.788.766.022.65
Pregabalin0.897.566.3221.3223.4926.148.483.481.9

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Clinical Efficacy 2

Determine if there was a reduction in the need for use of rescue pain medications, Percocet and tetracaine, in those subjects who received pregabalin. Total number of doses was collected. A higher number of doses required indicates a worse outcome. (NCT01097577)
Timeframe: 5 days

,
InterventionRescue medication doses (Mean)
Surgery DayPostop Day 1Postop Day 3Postop Day 4
Lactose Capsule0.942.442.560.62
Pregabalin0.811.71.70.43

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PPI Score

Determine if clinical efficacy is achieved with pregabalin administered prior to PRK and continued for 5 days. This will be evaluated using the short-form McGill pain questionnaire (SF-MPQ). Secondary efficacy is assessed with present pain intensity (PPI) score. Scale is 0 (no pain) to 5 (excruciating pain) (NCT01097577)
Timeframe: 5 days

,
Interventionscore on a scale (Mean)
BaselineSurgery DayPostop day 1 morningPostop day 1 eveningPostop day 2 morningPostop day 2 eveningPostop day 3 morningPostop day 3 eveningPostop day 4 morning
Lactose Capsule0.030.840.891.621.621.480.680.480.22
Pregabalin0.030.690.671.371.431.460.670.30.18

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Quality of Life - BPI

Determine if there was an improvement in the patient's functional health and well-being associated with pregabalin compared to standard of care as assessed by Brief Pain Inventory-short form (BPI-SF). Data was assessed on the day of surgery (Day 0) and at the expected peak of pain, postop Day 2 in the morning. Scale is minimum 0 (no pain) to maximum of 10 (pain as bad as you can imagine). A higher score indicates a worse outcome. (NCT01097577)
Timeframe: 5 days

,
Interventionscore on a scale (Mean)
Pain at its Worst, Day0Pain at its Worst, Day2Pain at its Least, Day 0Pain at its least, Day2Avg Pain, Day0Avg Pain, Day2Pain Interference, Day0Pain Interference, Day2
Lactose Capsule0.244.670.081.480.333.030.133.5
Pregabalin0.513.760.131.310.372.280.132.56

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Total MPQ Score

Determine if clinical efficacy is achieved with pregabalin administered prior to PRK and continued for 5 days. This will be evaluated using the short-form McGill pain questionnaire (SF-MPQ). Secondary efficacy is assessed using the Total MPQ Score. Scale minimum is 0 (no pain) to maximum of 45 (severe pain). A higher score indicates a worse outcome. (NCT01097577)
Timeframe: 5 days

,
Interventionscore on a scale (Mean)
BaselineSurgery DayPostop day 1 morningPostop day 1 eveningPostop day 2 morningPostop day 2 eveningPostop day 3 morningPostop day 3 eveningPostop day 4 morning
Lactose Capsule0.162.182.165.375.615.682.91.160.39
Pregabalin0.151.851.794.64.674.871.70.970.6

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Mean Change From Baseline in Heat Pain Sensitivity at Visits 3 and 6 and Visits 4 and 7

Duration of thermal stimuli was 2 seconds and an intensity that is increased in steps of 4 degrees celsius for heat stimuli (between 40 and 50 degrees celsius). Thermal pain sensitivity was participant-rated using 11-point NRS where 0=no pain and 10=worst pain imaginable. The average of 2 ratings was calculated to get the mean score. (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventionscores on a scale (Mean)
Week 3 (Visits 3 and 6) (40 degrees, n=15,16)Week 3 (Visits 3 and 6) (44 degrees, n=15,16)Week 3 (Visits 3 and 6) (47 degrees, n=15,16)Week 3 (Visits 3 and 6) (50 degrees, n=15,16)Week 4 (Visits 4 and 7) (40 degrees, n=18,21)Week 4 (Visits 4 and 7) (44 degrees, n=18,21)Week 4 (Visits 4 and 7) (47 degrees, n=18,21)Week 4 (Visits 4 and 7) (50 degrees, n=18,21)
Placebo-0.625-0.938-0.578-0.865-0.143-0.495-0.083-0.387
Pregabalin-1.1000.400-0.908-1.385-0.639-0.444-0.337-0.566

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Mean Change From Baseline in Weekly Pain Score From the Daily Diary at Visits 3 and 6 and Visits 4 and 7

Daily pain diary: participant-rated pain during the past 24 hours rated on an 11 point NRS scale where 0=no pain and 10=worst possible pain. For a given week, the pain response was the average of the 7 daily entries for that week, or average of the available data for that week if fewer than 7 entries were recorded (>=1 daily pain score for any given week required). The endpoint for each week consisted of the change from baseline in average pain score (follow-up value minus baseline). (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventionscores on a scale (Mean)
Week 3 (Visits 3 and 6) (n=19,18)Week 4 (Visits 4 and 7) (n=18,18)
Placebo-0.484-0.769
Pregabalin-1.456-1.397

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Mean Change From Baseline in Mechanical Pain Sensitivity (Von Frey) at Visits 3 and 6 and Visits 4 and 7

Sensitivity to mechanical pain stimuli was tested using calibrated Von Frey monofilaments. To obtain a stimulus-response-function, seven different Von Frey monofilaments (size 8 to 512 mN, force increased by a factor of two from filament to filament) applied three times each; each stimulus was participant-rated using 11-point NRS where 0=no pain and 10=worst pain imaginable. If a score of 8 or more was reported for a given intensity no stronger stimuli was applied. Von Frey stimulus was applied to the skin for 1 to 2 seconds. The average of 3 ratings was calculated for the mean score. (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventionscores on a scale (Mean)
Week 3 (Visits 3 and 6) (Size 8, n=15,16)Week 3 (Visits 3 and 6) (Size 16, n=15,16)Week 3 (Visits 3 and 6) (Size 32, n=15,16)Week 3 (Visits 3 and 6) (Size 64, n=15,16)Week 3 (Visits 3 and 6) (Size 128, n=15,16)Week 3 (Visits 3 and 6) (Size 256, n=15,16)Week 3 (Visits 3 and 6) (Size 512, n=15,16)Week 4 (Visits 4 and 7) (Size 8, n=18,21)Week 4 (Visits 4 and 7) (Size 16, n=18,21)Week 4 (Visits 4 and 7) (Size 32, n=18,21)Week 4 (Visits 4 and 7) (Size 64, n=18,21)Week 4 (Visits 4 and 7) (Size 128, n=18,21)Week 4 (Visits 4 and 7) (Size 256, n=18,21)Week 4 (Visits 4 and 7) (Size 512, n=18,21)
Placebo0.4170.208-0.1880.561-0.097-0.171-0.480-0.429-0.889-0.825-0.462-0.841-0.751-0.420
Pregabalin-0.133-1.356-0.200-1.128-1.267-0.773-1.533-0.370-0.611-0.333-1.116-1.315-1.322-1.836

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Mean Change From Baseline in Patient's Global Impression of Change (PGIC) at Visits 3 and 6 and Visits 4 and 7

PGIC: participant-rated assessment measuring change in participant's overall status on a 7-point scale from 1=very much improved to 7=very much worse. (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventionscores on a scale (Mean)
Week 3 (Visits 3 and 6) (n=15,16)Week 4 (Visits 4 and 7) (n=18,21)
Placebo3.43.8
Pregabalin3.32.4

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Mean Change From Baseline in Punctate Allodynia Area (Von Frey) at Visits 3 and 6 and Visits 4 and 7

Punctate allodynia area in cm^2: calculated from 8 measured distances by calculating the area of an octagon. The angle between each pair of lines was 45 degrees at point c. The area of the octagon was found by totaling the areas of the 8 triangles. Octagon with 8 radial lengths from center to the outside. Area = Σ ( ½ length * perpendicular height); Σ ( ½ ri * sin(45) r(i+1) ) = Σ ( (ri * r(i+1) )/2√2)). (where ri, i=1 to 8, were the eight radial lengths) (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventioncm2 (Mean)
Week 3 (Visits 3 and 6) (n=16,17)Week 4 (Visits 4 and 7) (n=17,20)
Placebo-3.232-4.130
Pregabalin-75.571-75.834

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Mean Change From Baseline in Test-Day Global Pain Intensity at Visits 3 and 6 and Visits 4 and 7

"Global pain: participant-rated pain using the test-day global pain scale, consisting of an 11-point NRS where 0 = no pain and 10 = worst possible pain. Participants described intensity of pain in response to How intense is your pain today?" (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventionscores on a scale (Mean)
Week 3 (Visits 3 and 6) (n=7,10)Week 4 (Visits 4 and 7) (n=11,11)
Placebo-0.40.0
Pregabalin-1.5-1.6

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Mean Change From Baseline in Dynamic Allodynia Intensity at Visits 3 and 6 and Visits 4 and 7

"Five strokes applied with a standardized brush (somedic) across the painful site, 6cm long and at a control site to allow the participants to appreciate any difference. A painful and clearly dysaesthetic (unpleasant) sensation was considered as representing brush allodynia (whereas a strange or tickly sensation provoked by the brush was not). After each brush stimuli participants were asked to give a pain rating using 11-point numerical rating scale (NRS) where 0=no pain and 10=worst pain imaginable. The average of 5 brush strokes was calculated to obtain the mean score." (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventionscores on a scale (Mean)
Week 3 (Visits 3 and 6) (n=15,16)Week 4 (Visits 4 and 7) (n=18,21)
Placebo-1.16-0.67
Pregabalin-1.09-1.31

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Mean Change From Baseline in Dynamic Allodynia Area at Visits 3 and 6 and Visits 4 and 7

Dynamic area brush in cm^2: calculated from 8 measured distances by calculating the area of an octagon. The angle between each pair of lines was 45 degrees at point c. The area of the octagon was found by totaling the areas of the 8 triangles. Octagon with 8 radial lengths from center to the outside. Area = Σ ( ½ length * perpendicular height); Σ ( ½ ri * sin(45) r(i+1) ) = Σ ( (ri * r(i+1) )/2√2)). (where ri, i=1 to 8, were the eight radial lengths) (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventioncm2 (Mean)
Week 3 (Visits 3 and 6) (n=16,17)Week 4 (Visits 4 and 7) (n=17,20)
Placebo-49.180-18.921
Pregabalin-53.441-49.808

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Mean Change From Baseline in Cold Pain Sensitivity at Visits 3 and 6 and Visits 4 and 7

Duration of thermal stimuli was 2 seconds and an intensity that is increased in steps of 5 degrees celsius for cold stimuli (between 5 and 20 degrees celsius). Thermal pain sensitivity was participant-rated using 11-point NRS where 0=no pain and 10=worst pain imaginable. The average of 2 ratings was calculated to get the mean score. (NCT01117766)
Timeframe: Week 3 (Visits 3 and 6) and Week 4 (Visits 4 and 7) of each period

,
Interventionscores on a scale (Mean)
Week 3 (Visits 3 and 6) (5 degrees, n=15,16)Week 3 (Visits 3 and 6) (10 degrees, n=15,16)Week 3 (Visits 3 and 6) (15 degrees, n=15,16)Week 3 (Visits 3 and 6) (20 degrees, n=15,16)Week 4 (Visits 4 and 7) (5 degrees, n=18,21)Week 4 (Visits 4 and 7) (10 degrees, n=18,21)Week 4 (Visits 4 and 7) (15 degrees, n=18,21)Week 4 (Visits 4 and 7) (20 degrees, n=18,21)
Placebo-1.402-1.3130.1250.031-0.703-0.8100.095-0.333
Pregabalin-0.821-0.333-0.567-0.500-0.726-0.278-0.583-0.111

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Mean Change From Baseline in Neuropathic Pain Symptom Inventory (NPSI) Total Score at Visits 4 and 7

NPSI: 10-item self-administered questionnaire assessing 5 dimensions of pain (burning superficial spontaneous pain, pressing deep spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dysesthesia). Each item consists of a question about the specific qualities of pain and an 11-point numerical scale range: 0 (absence of pain) to 10 (maximum intensity imaginable), and 2 temporal items related to spontaneous and paroxysmal pain. Maximum total score possible = 100. (NCT01117766)
Timeframe: Week 4 (Visits 4 and 7) of each period

Interventionscores on a scale (Mean)
Pregabalin-10.67
Placebo-7.72

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Number of Participants Who Were Employed or Unemployed Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire

"WPAI: 6-question participant rated questionnaire to determine the degree to which SHP affected work productivity while at work and affected activities outside of work. It assesses amount of absenteeism, presenteeism and daily activity impairment attributable to a Human Immunodeficiency Virus (HIV) neuropathy pain. Number of participants who responded Yes/No to Question 1: Are you currently employed (working for pay)? are reported." (NCT01145417)
Timeframe: Baseline, Week 24

,
Interventionparticipants (Number)
Baseline, employed (n=52,51)Baseline, unemployed (n=52,51)Week 24, employed (n=103,104)Week 24, unemployed (n=103,104)
Placebo-Pregabalin11402777
Pregabalin-Pregabalin12403568

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Number of Participants With Categorical Scores on Patient Global Impression of Change (PGI-C)

PGI-C: participant rated instrument to measure participant's change in overall status since the start of the study, on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Number of participants in each category are reported. (NCT01145417)
Timeframe: Week 24

,
Interventionparticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much Worse
Placebo-Pregabalin3747163010
Pregabalin-Pregabalin4143162100

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Number of Participants With Response to Patient Health Questionnaire-8 (PHQ-8)

"PHQ-8: 8-item self-administered validated subset of PHQ-9, which comprises first 8 items of measure. Participant rated Over past 2 weeks, how often bothered by any of following problems?: little interest in doing things(1); feeling down(2); trouble falling or staying asleep/sleeping too much(3); feeling tired(4); poor appetite/overeating(5); feeling bad about self(6); trouble concentrating(7); moving or speaking slowly or being so fidgety/moving around more than usual(8). Each item scored on scale of 0(not at all)-3(nearly every day). Total score range: 0-24, higher score=greater severity." (NCT01145417)
Timeframe: Baseline

,
Interventionparticipants (Number)
Little interest in things: Not at AllLittle interest in things: Several DaysLittle interest in things: More Than Half the DaysLittle interest in things: Nearly Every DayFeeling down: Not at AllFeeling down: Several DaysFeeling down: More Than Half the DaysFeeling down: Nearly Every DayTrouble with sleep: Not at AllTrouble with sleep: Several DaysTrouble with sleep: More Than Half the DaysTrouble with sleep: Nearly Every DayFeeling tired: Not at AllFeeling tired: Several DaysFeeling tired: More Than Half the DaysFeeling tired: Nearly Every DayPoor appetite/overeating: Not at AllPoor appetite/overeating: Several DaysPoor appetite/overeating: More Than Half the DaysPoor appetite/overeating: Nearly Every DayFeeling bad about self: Not at AllFeeling bad about self: Several DaysFeeling bad about self: More Than Half the DaysFeeling bad about self: Nearly Every DayTrouble concentrating: Not at AllTrouble concentrating: Several DaysTrouble concentrating: More Than Half the DaysTrouble concentrating: Nearly Every DayMove or speak slow/fidgety: Not at AllMove or speak slow/fidgety: Several DaysMove or speak slow/fidget: More Than Half the DaysMove or speak slow/fidgety: Nearly Every Day
Placebo-Pregabalin6725977921625940455340141712656881334842031861633
Pregabalin-Pregabalin593114384185057331435243120752453921221792323871802

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Number of Participants With Response to Sheehan-Suicidality Tracking Scale (S-STS) Mapped to the Columbia Classification Algorithm of Suicide Assessment (C-CASA) Categories

S-STS:8-item clinician/participant administered prospective rating scale to assess TE suicidal(Su) ideation(ID),behavior(BHV).Items 1a,2-6,7a,8 scored on 5-point Likert scale 0(not at all) to 4(extremely). Items 1,1b,7 require yes/no response. S-STS total score range 0-30. Lower score=reduced Su tendency. Responses on S-STS were mapped to Columbia Classification Algorithm of Suicide Assessment(C-CASA) as 1:Completed Su; 2: Su attempt; 3: Preparatory acts; 4: Su ID; 5: Self-injurious (SI) BHV, intent unknown; 6: Not enough information; 7: SI BHV, no Su intent; 8: Other, no deliberate self harm. (NCT01145417)
Timeframe: Baseline up to Week 25

,
Interventionparticipants (Number)
Suicide attempt: 2Preparatory acts toward suicidal behavior: 3Suicidal ideation: 4
Placebo-Pregabalin119
Pregabalin-Pregabalin004

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Number of Participants With Treatment Emergent (TE) Adverse Events (AEs) and Serious Adverse Events (SAEs)

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to 30 days after last dose that were absent before treatment or that worsened relative to pretreatment state. (NCT01145417)
Timeframe: Baseline up to 30 days after last dose of study treatment

,
Interventionparticipants (Number)
AEsSAEs
Placebo-Pregabalin703
Pregabalin-Pregabalin674

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Productivity and Activity Impairment Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire

WPAI: 6-question participant rated questionnaire to determine the degree to which SHP affected work productivity while at work and affected activities outside of work. It assesses amount of absenteeism, presenteeism and daily activity impairment attributable to a HIV neuropathy pain. Question 5 and 6 assesses: How much leg/foot pain affect productivity and daily activity, respectively in past 7 days? on 11-point scale, where 0 (not affected/no impairment) to 10 (completely affected/impaired). (NCT01145417)
Timeframe: Baseline, Week 24

,
InterventionUnits on a scale (Mean)
Baseline, productivity affected (n=12,10)Baseline, daily activity affected (n=52,51)Week 24, productivity affected (n=35,29)Week 24, daily activity affected (n=103,104)
Placebo-Pregabalin2.403.472.242.72
Pregabalin-Pregabalin4.423.482.172.51

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Visual Analogue Scale for Pain (VAS-pain)

Participants rated the severity of HIV neuropathy pain on a 0 to 100 millimeter (mm) Visual Analog Scale (VAS), where 0 mm = no pain and 100 mm = most severe pain. (NCT01145417)
Timeframe: Baseline, Week 4, 8, 12, 16, 20, 24

,
Interventionmillimeter (mm) (Mean)
Baseline (n=107,108)Week 4 (n=106,106)Week 8 (n=100,101)Week 12 (n=89,88)Week 16 (n=85,81)Week 20 (n=72,67)Week 24 (n=103,104)
Placebo-Pregabalin40.733.127.823.822.617.723.7
Pregabalin-Pregabalin40.633.127.424.122.617.222.2

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Absenteeism and Presenteeism Assessed by Work Productivity and Activity Impairment: Specific Health Problem (WPAI: SHP) Questionnaire

WPAI: 6-question participant rated questionnaire to determine the degree to which SHP affected work productivity while at work and affected activities outside of work. It assesses amount of absenteeism, presenteeism and daily activity impairment attributable to a HIV neuropathy pain. Question 2 and 3 assesses absenteeism as: Hours of work missed in past 7 days due to leg/foot pain or other reason, respectively. Question 4 assesses presenteeism as: Hours of work performed in past 7 days. (NCT01145417)
Timeframe: Baseline, Week 24

,
Interventionhours (Mean)
Baseline, hours missed,leg/foot pain (n=12,11)Baseline, hours missed,other reason (n=12,11)Baseline, hours worked (n=12,11)Week 24, hours missed,leg/foot pain (n=35,28)Week 24, hours missed,other reason (n=35,28)Week 24, hours worked (n=35,28)
Placebo-Pregabalin0.820.9130.362.327.7134.86
Pregabalin-Pregabalin2.253.4235.582.179.2041.51

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36-Item Short-Form Health Survey (SF-36)

SF-36 is a standardized survey evaluating 8 domains of functional health and well being: physical and social (So) functioning (Fn), physical and emotional role (role-physical [R-P], role-emotional [R-E]) limitations, bodily pain (BP), general health (GH), vitality (Vit), mental health (MnH). Two summary scores include Physical Component (Ph C) and Mental Component (Mn C). The score for a section is an average of the individual question scores. Score range for domain scores and summary scores: 0-100 (100=highest level of functioning). (NCT01145417)
Timeframe: Baseline, Week 24

,
InterventionUnits on a scale (Mean)
Baseline: Ph Fn (n=51,53)Baseline: R-P (n=51,53)Baseline: BP (n=51,53)Baseline: GH (n=51,53)Baseline: Ph C (n=51,53)Baseline: Vit (n=51,53)Baseline: So Fn (n=51,53)Baseline: R-E (n=51,53)Baseline: MnH (n=51,53)Baseline: Mn C (n=51,53)Week 24: Ph Fn (n=103,104)Week 24: R-P (n=103,104)Week 24: BP (n=102,104)Week 24: GH (n=103,104)Week 24: Ph C (n=102,104)Week 24: Vit (n=103,104)Week 24: So Fn (n=103,104)Week 24: R-E (n=103,104)Week 24: MnH (n=103,104)Week 24: Mn C (n=102,104)
Placebo-Pregabalin75.4771.9368.8768.7946.8573.1182.0879.8780.0052.7175.2472.9672.1971.3148.4866.2981.8575.8075.7749.72
Pregabalin-Pregabalin73.1475.4968.8672.2547.6871.5778.9281.0576.2751.4170.3471.1869.5773.1447.2868.5179.9874.1976.2150.15

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Number of Participants With Generalized or Abdominal Edema

Number of participants who had generalized or abdominal edema. (NCT01202227)
Timeframe: Baseline, Weeks 4, 20, 36, 52, and 53

InterventionParticipants (Number)
Baseline (n=103)Week 4 (n=101)Week 20 (n=93)Week 36 (n=90)Week 52/early termination (n=100)Week 53/early termination (n=78)
Pregabalin000010

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Number of Participants With Facial/Periorbital Edema

Number of participants who had facial or periorbital edema. (NCT01202227)
Timeframe: Baseline, Weeks 4, 20, 36, 52, and 53

InterventionParticipants (Number)
Baseline (n=103)Week 4 (n=101)Week 20 (n=93)Week 36 (n=90)Week 52/early termination (n=100)Week 53/early termination (n=78)
Pregabalin000010

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Number of Participants With Deterioration in Neurological Examination Findings

Worsening of the condition relative to baseline was reported as deteriorated. Assessment categories are as follows: normal or abnormal for Cranial Nerve Function, Mental State, and Coordination; normal, mild, moderate, or severe ataxia for Gait; none/absent, normal, or hyper-reflexic for Deep Tendon Reflexes; absent or present for Abnormal Reflexes; normal, mild, moderate, or severe weakness for Muscle Strength; slight, more marked, or considerable increase, or affected parts rigid in flexion or extension for Muscle Tone; absent or present for Sensory Function. (NCT01202227)
Timeframe: 53 weeks

InterventionParticipants (Number)
Cranial Nerve FunctionMental StateCoordination: Right (R)- Finger to NoseCoordination: Left (L)- Finger to NoseCoordination: R- Finger TappingCoordination: L- Finger TappingCoordination: R- Rapid Alternating Hand MovementCoordination: L- Rapid Alternating Hand MovementCoordination: Romberg TestGaitDeep Tendon Reflexes: R- BrachioradialisDeep Tendon Reflexes: L- BrachioradialisDeep Tendon Reflexes: R-PatellarDeep Tendon Reflexes: L-PatellarDeep Tendon Reflexes: R- AchillesDeep Tendon Reflexes: L- AchillesAbnormal ReflexesMuscle Strength: R- Upper LimbMuscle Strength: L- Upper LimbMuscle Strength: R- Lower LimbMuscle Strength: L- Lower LimbMuscle Tone: R- Upper LimbMuscle Tone: L- Upper LimbMuscle Tone: R- Lower LimbMuscle Tone: L- Lower LimbSensory Function: AnesthesiaSensory Function: HypesthesiaSensory Function: AllodyniaSensory Function: Hyperalgesia
Pregabalin00021012111133231121211550112

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Number of Participants With Visual Field Deteriorated

Number of participants who had normal visual field at baseline and showed abnormal result after the study treatment, assessed by confrontational visual field test (neurological examination). (NCT01202227)
Timeframe: 53 weeks

InterventionParticipants (Number)
Right eyeLeft eye
Pregabalin00

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Number of Participants With Suicidal Ideation According to Sheehan Suicidality Tracking Scale (Sheehan-STS)

The Sheehan-STS is an 8-item prospective rating scale that tracks treatment-emergent suicidal ideation and behaviors. Participants who reported a score of ≥1 (5-point scale ranging from 0: not at all to 4: extremely) for Item 2, 3, 4 or 5 of the Sheehan-STS prognostic scale is considered to have suicidal ideation as the scores are mapped to Category 4 (suicide ideation) of the Columbia Classification Algorithm of Suicide Assessment. (NCT01202227)
Timeframe: Baseline, Weeks 2, 4, 8, 12, 20, 28, 36, 44, and 52

InterventionParticipants (Number)
Baseline (n=103)Week 2 (n=102)Week 4 (n=101)Week 8 (n=99)Week 12 (n=96)Week 20 (n=93)Week 28 (n=91)Week 36 (n=90)Week 44 (n=85)Week 52 (n=101)
Pregabalin3210022220

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Change From Baseline in Short-Form McGill Pain Questionnaire (SF-MPQ) at Each Time Point: Total Scores

"The main component of the SF-MPQ consists of 15 descriptors (11 sensory; 4 affective) which are rated on an intensity scale as 0 = none, 1 = mild, 2 = moderate or 3 = severe.~Range: 0 to 45 for total score. Change = observation mean minus baseline mean. Negative change indicated improvement." (NCT01202227)
Timeframe: Baseline, Weeks 2, 4, 8, 12, 20, 28, 36, 44, and 52

InterventionScore on a scale (Mean)
Week 2 (n=103)Week 4 (n=102)Week 8 (n=99)Week 12 (n=98)Week 20 (n=95)Week 28 (n=92)Week 36 (n=91)Week 44 (n=87)Week 52 (n=85)Week 52 (LOCF, n=103)
Pregabalin-4.2-5.2-5.3-5.7-6.1-5.1-5.0-4.4-5.0-4.6

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Number of Participants With Peripheral Edema

Number of participants who had peripheral edema in lower extremities. Edema was categorized as follows: trace, pitting 1 (lower leg), 2 (lower leg to knee), and 3 (above knee and /or presacral edema). (NCT01202227)
Timeframe: Baseline, Weeks 4, 20, 36, 52, and 53

InterventionParticipants (Number)
Trace at Baseline (n=103)Pitting +1 at Baseline (n=103)Pitting +2 at Baseline (n=103)Pitting +3 at Baseline (n=103)Trace at Week 4 (n=101)Pitting +1 at Week 4 (n=101)Pitting +2 at Week 4 (n=101)Pitting +3 at Week 4 (n=101)Trace at Week 20 (n=93)Pitting +1 at Week 20 (n=93)Pitting +2 at Week 20 (n=93)Pitting +3 at Week 20 (n=93)Trace at Week 36 (n=90)Pitting +1 at Week 36 (n=90)Pitting +2 at Week 36 (n=90)Pitting +3 at Week 36 (n=90)Trace at Week 52/early termination (n=100)Pitting +1 at Week 52/early termination (n=100)Pitting +2 at Week 52/early termination (n=100)Pitting +3 at Week 52/early termination (n=100)Trace at Week 53/early termination (n=78)Pitting +1 at Week 53/early termination (n=78)Pitting +2 at Week 53/early termination (n=78)Pitting +3 at Week 53/early termination (n=78)
Pregabalin59208841837014730107209500

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Change From Baseline in the Modified Brief Pain Inventory (10 Item) (mBPI-10)Total Scores at Last Evaluation Score

"The mBPI-10 is a self administered questionnaire that assesses pain interference with functional activities over the past week. These items are measured on an 11 point scale, ranging from does not interfere (0) to completely interferes (10). A composite score, the Pain Interference Index, will be calculated by averaging the 10 items that comprise the scale.~Change = observation mean at Week 52 minus baseline mean." (NCT01202227)
Timeframe: Baseline, Week 52

InterventionScore on a scale (Mean)
Pregabalin-1.4

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Change From Baseline in Short-Form McGill Pain Questionnaire (SF-MPQ) at Each Time Point: Affective Scores

"The main component of the SF-MPQ consists of 15 descriptors (11 sensory; 4 affective) which are rated on an intensity scale as 0 = none, 1 = mild, 2 = moderate or 3 = severe.~Range: 0 to 12 for affective score. Change = observation mean minus baseline mean. Negative change indicated improvement." (NCT01202227)
Timeframe: Baseline, Weeks 2, 4, 8, 12, 20, 28, 36, 44, and 52

InterventionScore on a scale (Mean)
Week 2 (n=103)Week 4 (n=102)Week 8 (n=99)Week 12 (n=98)Week 20 (n=95)Week 28 (n=92)Week 36 (n=91)Week 44 (n=87)Week 52 (n=85)Week 52 (LOCF, n=103)
Pregabalin-1.1-1.3-1.3-1.5-1.6-1.3-1.3-1.3-1.4-1.0

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Change From Baseline in Short-Form McGill Pain Questionnaire (SF-MPQ) at Each Time Point: Sensory Scores

"The main component of the SF-MPQ consists of 15 descriptors (11 sensory; 4 affective) which are rated on an intensity scale as 0 = none, 1 = mild, 2 = moderate or 3 = severe.~Range: 0 to 33 for sensory score. Change = observation mean minus baseline mean. Negative change indicated improvement." (NCT01202227)
Timeframe: Baseline, Weeks 2, 4, 8, 12, 20, 28, 36, 44, and 52

InterventionScore on a scale (Mean)
Week 2 (n=103)Week 4 (n=102)Week 8 (n=99)Week 12 (n=98)Week 20 (n=95)Week 28 (n=92)Week 36 (n=91)Week 44 (n=87)Week 52 (n=85)Week 52 (LOCF, n=103)
Pregabalin-3.1-3.9-3.9-4.2-4.5-3.8-3.7-3.1-3.6-3.6

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Change From Baseline in Daily Pain Score for NeP in PP Population at Week 6

DPRS: participant rated 11-point Likert scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain. (NCT01220180)
Timeframe: Baseline and Week 6

InterventionUnits on a scale (Mean)
BaselineChange at Week 6
Pregabalin5.58-3.02

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Change From Baseline in Daily Pain Score for NeP in ITT Population at Week 6

Daily Pain Rating Score (DPRS): participant rated 11-point Likert scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain. (NCT01220180)
Timeframe: Baseline and Week 6

InterventionUnits on a scale (Mean)
BaselineChange at Week 6
Pregabalin5.61-3.02

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Change From Baseline in Daily Pain Score for Fibromyalgia in PP Population at Week 6

DPRS: participant rated 11-point Likert scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain. (NCT01220180)
Timeframe: Baseline and Week 6

InterventionUnits on a scale (Mean)
BaselineChange at Week 6
Pregabalin6.69-3.37

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Number of Participants With CGIC Scale for Fibromyalgia in ITT Population

CGIC: 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Change was defined as a score of 1 (very much improved), 2 (much improved), 3 (a little improved), 4 (no change), 5 (a little worse), 6 (much worse) or 7 (very much worse) on the scale. Higher score is equal to more affected. (NCT01220180)
Timeframe: Week 6

InterventionParticipants (Number)
Very much improvedMuch improvedA little improvedNo changeA little worseMuch worseVery much worse
Pregabalin3062215000

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Percentage of Participants Achieving 28 Days Seizure Free Period in Per Protocol (PP) Population

Participants were regarded as seizure-free if no seizures (partial or other) were reported for the participant during the period of 28 days in the study. (NCT01220180)
Timeframe: Baseline through Week 12

InterventionPercentage of participants (Number)
Pregabalin67.13

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Percentage of Participants Achieving 28 Days Seizure Free Period in Intent-to Treat (ITT) Population

Participants were regarded as seizure-free if no seizures (partial or other) were reported for the participant during the period of 28 days in the study. (NCT01220180)
Timeframe: Baseline through Week 12

InterventionPercentage of participants (Number)
Pregabalin66.30

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Percentage of Participants With Improvement in Seizure Frequency in ITT Population

Percentage of participants with improvement in seizure frequency of greater than or equal to 75%; greater than or equal to 50% to 74%; 0% to 49% were considered. (NCT01220180)
Timeframe: Baseline through Week 12

InterventionPercentage of participants (Number)
Greater than or equal to 75%Greater than or equal to 50% to 74%0% to 49%Worsening
Pregabalin55.7528.5714.131.55

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Number of Participants With PGIC Scale for NeP in PP Population

PGIC was defined as participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Change was defined as a score of 1 (very much improved), 2 (much improved), 3 (a little improved), 4 (no change), 5 (a little worse) , 6 (much worse) or 7 (very much worse) on the scale. Higher score is equal to more affected. (NCT01220180)
Timeframe: Week 6

InterventionParticipants (Number)
Very much improvedMuch ImprovedA little improvedNo changeA little worseMuch worseVery much worse
Pregabalin10181177680193530

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Number of Participants With PGIC Scale for Fibromyalgia in PP Population

PGIC was defined as participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Change is defined as a score of 1 (very much improved), 2 (much improved), 3 (a little improved), 4 (no change), 5 (a little worse) , 6 (much worse) or 7 (very much worse) on the scale. Higher score is equal to more affected. (NCT01220180)
Timeframe: Week 6

InterventionParticipants (Number)
Very much improvedMuch ImprovedA little improvedNo changeA little worseMuch worseVery much worse
Pregabalin3461148000

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Number of Participants With PGIC Scale for Fibromyalgia in ITT Population

PGIC was defined as participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Change is defined as a score of 1 (very much improved), 2 (much improved), 3 (a little improved), 4 (no change), 5 (a little worse) , 6 (much worse) or 7 (very much worse) on the scale. Higher score is equal to more affected. (NCT01220180)
Timeframe: Week 6

InterventionParticipants (Number)
Very much improvedMuch improvedA little improvedNo changeA little worseMuch worseVery much worse
Pregabalin3561148000

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Number of Participants With Patient's Global Impression of Change (PGIC) Scale for NeP in ITT Population

PGIC was defined as participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Change was defined as a score of 1 (very much improved), 2 (much improved), 3 (a little improved), 4 (no change), 5 (a little worse) , 6 (much worse) or 7 (very much worse) on the scale. Higher score is equal to more affected. (NCT01220180)
Timeframe: Week 6

InterventionParticipants (Number)
Very much improvedMuch improvedA little improvedNo changeA little worseMuch worseVery much worse
Pregabalin10271187686195530

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Number of Participants With Clinician's Global Impression of Change (CGIC) Scale for NeP in ITT Population

CGIC: 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Change is defined as a score of 1 (very much improved), 2 (much improved), 3 (a little improved), 4 (no change), 5 (a little worse), 6 (much worse) or 7 (very much worse) on the scale. Higher score is equal to more affected. (NCT01220180)
Timeframe: Week 6

InterventionParticipants (Number)
Very much improvedMuch improvedA little improvedNo changeA little worseMuch worseVery much worse
Pregabalin9681313671141750

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Number of Participants With CGIC Scale for NeP in PP Population

CGIC: 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Change is defined as a score of 1 (very much improved), 2 (much improved), 3 (a little improved), 4 (no change), 5 (a little worse), 6 (much worse) or 7 (very much worse) on the scale. Higher score is equal to more affected. (NCT01220180)
Timeframe: Week 6

InterventionParticipants (Number)
Very much improvedMuch ImprovedA little improvedNo changeA little worseMuch worseVery much worse
Pregabalin9561306664140750

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Percentage of Participants With Improvement in Seizure Frequency in PP Population

Percentage of participants with improvement in seizure frequency of greater than or equal to 75%; greater than or equal to 50% to 74%; 0% to 49% were considered. (NCT01220180)
Timeframe: Baseline through Week 12

InterventionPercentage of participants (Number)
Greater than or equal to 75%Greater than or equal to 50% to 74%0% to 49%Worsening
Pregabalin57.2229.3912.520.87

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Number of Participants With CGIC Scale for Fibromyalgia in PP Population

CGIC: 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Change was defined as a score of 1 (very much improved), 2 (much improved), 3 (a little improved), 4 (no change), 5 (a little worse), 6 (much worse) or 7 (very much worse) on the scale. Higher score is equal to more affected. (NCT01220180)
Timeframe: Week 6

InterventionParticipants (Number)
Very much improvedMuch ImprovedA little improvedNo changeA little worseMuch worseVery much worse
Pregabalin2962215000

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Change From Baseline in Sleep Interference Score for NeP in ITT Population at Week 6

Daily Sleep Interference Score (DSIS): participant rated 11-point Likert scale ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep) during past 24-hour period. Higher score indicates a greater level of sleep disturbance. Self-assessment performed daily on awakening prior to taking study medication. (NCT01220180)
Timeframe: Baseline and Week 6

InterventionUnits on a scale (Mean)
BaselineChange at Week 6
Pregabalin4.25-2.38

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Change From Baseline in Sleep Interference Score for Fibromyalgia in PP Population at Week 6

DSIS: participant rated 11-point Likert scale ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep) during past 24-hour period. Higher score indicates a greater level of sleep disturbance. Self-assessment performed daily on awakening prior to taking study medication. (NCT01220180)
Timeframe: Baseline and Week 6

InterventionUnits on a scale (Mean)
BaselineChange at Week 6
Pregabalin6.41-3.24

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Change From Baseline in Sleep Interference Score for Fibromyalgia in ITT Population at Week 6

DSIS: participant rated 11-point Likert scale ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep) during past 24-hour period. Higher score indicates a greater level of sleep disturbance. Self-assessment performed daily on awakening prior to taking study medication. (NCT01220180)
Timeframe: Baseline and Week 6

InterventionUnits on a scale (Mean)
BaselineChange at Week 6
Pregabalin6.43-3.19

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Change From Baseline in Sleep Interference Score for NeP in PP Population at Week 6

DSIS: participant rated 11-point Likert scale ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep) during past 24-hour period. Higher score indicates a greater level of sleep disturbance. Self-assessment performed daily on awakening prior to taking study medication. (NCT01220180)
Timeframe: Baseline and Week 6

InterventionUnits on a scale (Mean)
BaselineChange at Week 6
Pregabalin4.23-2.37

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Change From Baseline in Daily Pain Score for Fibromyalgia in ITT Population at Week 6

DPRS: participant rated 11-point Likert scale ranging from 0 (no pain) to 10 (worst possible pain) during past 24-hour period. Higher score indicates greater level of pain. (NCT01220180)
Timeframe: Baseline and Week 6

InterventionUnits on a scale (Mean)
BaselineChange at Week 6
Pregabalin6.69-3.37

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Patient's Impression (PGIC) at Week 13

The patient's impression (patient global impression of change [PGIC]) at Week 13, as compared to the baseline condition (including the first day of treatment), was rated by participants on a 7-grade scale. For the participants who completed or discontinued the treatment before Week 13, the data at the time of the completion or discontinuation was used for the analysis. (NCT01256593)
Timeframe: At Week 13

InterventionParticipants (Number)
Markedly improvedImprovedSlightly improvedUnchangedSlightly worsenedWorsenedMarkedly worsenedNot assessed
LYRICA Capsules (Pregabalin)583103970845412111759

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Physician's Impression (CGIC) at Week 13

The physician's impression (clinical global impression of change [CGIC]) at Week 13, as compared to the baseline condition (including the first day of treatment), was rated by the physician on a 7-grade scale. For the participants who completed or discontinued the treatment before Week 13, the data at the time of the completion or discontinuation was used for the analysis. (NCT01256593)
Timeframe: At Week 13

InterventionParticipants (Number)
Markedly improvedImprovedSlightly improvedUnchangedSlightly worsenedWorsenedMarkedly worsenedNot assessed
LYRICA Capsules (Pregabalin)6261149773471961532

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Change From Baseline in Participant-rated Pain Score at Week 13

The pain experienced at Week 13 during the past 24 hours was rated by participants at the time of getting up in the morning on an 11-grade scale, ranging from 0 (no pain) to 10 (the most severe pain possible). Mean change from baseline in participant-rated pain score at Week 13 was presented along with standard deviation. For the participants who completed or discontinued the treatment before Week 13, the data at the time of the completion or discontinuation was used for the analysis. (NCT01256593)
Timeframe: Baseline and at Week 13

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-3.4

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Change From Baseline in Participant-rated Sleep Interference Score at Week 13

The sleep interference (inability to sleep because of pain) experienced at Week 13 during the past 24 hours was rated by participants at the time of getting up in the morning on an 11-grade scale, ranging from 0 (no disturbance) to 10 (totally unable to sleep because of pain). Mean change from baseline in participant-rated sleep interference score at Week 13 was presented along with standard deviation. For the participants who completed or discontinued the treatment before Week 13, the data at the time of the completion or discontinuation was used for the analysis. (NCT01256593)
Timeframe: Baseline and at Week 13

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-2.4

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Clinical Effectiveness Rate

Clinical effectiveness of LYRICA Capsules was determined by the physician based on the following categories: (1) effective, (2) ineffective, or (3) impossible to judge at Week 13 of the treatment. Clinical effectiveness rate, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of the analysis population, was presented along with the corresponding 2-sided 95% CI. For the participants who completed or discontinued the treatment before Week 13, the data at the time of the completion or discontinuation was used for the analysis. (NCT01256593)
Timeframe: At Week 13

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)84.1

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Percentage of Participants With Adverse Drug Reaction

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01256593)
Timeframe: 13 weeks at maximum

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)15.03

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Percentage of Participants With Serious Adverse Drug Reaction

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. A serious ADR was an ADR resulting in any of the following outcomes or deemed significant for any other reason: death; life-threatening experience (immediate risk of dying); initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; congenital anomaly. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01256593)
Timeframe: 13 weeks at maximum

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)0.61

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The Percentage of Participants With Adverse Drug Reaction Unexpected From Japanese Package Insert

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. Expectedness of the adverse event was determined according to the Japanese package insert. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01256593)
Timeframe: 13 weeks at maximum

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)0.42

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Change From Baseline in Hospital Anxiety and Depression Scale - Anxiety (HADS-A) Total Score at Week 14

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg-0.8
Pregabalin 330 mg-0.4
Placebo-0.5

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Change From Baseline in MOS-SS - Sleep Adequacy Score at Week 14

Participant-rated 12-item questionnaire to assess key constructs of sleep over the past week. 7 subscales: sleep disturbance, snoring, awakened short of breath or with headache, sleep adequacy, and somnolence (range:0-100); sleep quantity (range:0-24), and optimal sleep (yes: 1, no: 0). 6 and 9 item index measures of sleep disturbance were constructed to provide composite scores. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range * 100); total score range: 0 to 100; higher score = greater intensity of attribute. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg2.3
Pregabalin 330 mg-1.7
Placebo-1.5

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Change From Baseline in MOS-SS - Sleep Problems Index I Score at Week 14

Participant-rated 12-item questionnaire to assess key constructs of sleep over the past week. 7 subscales: sleep disturbance, snoring, awakened short of breath or with headache, sleep adequacy, and somnolence (range:0-100); sleep quantity (range:0-24), and optimal sleep (yes: 1, no: 0). 6 and 9 item index measures of sleep disturbance were constructed to provide composite scores. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range * 100); total score range: 0 to 100; higher score = greater intensity of attribute. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg-2.2
Pregabalin 330 mg0.4
Placebo0.3

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Change From Baseline in MOS-SS - Sleep Somnolence Score at Week 14

Participant-rated 12-item questionnaire to assess key constructs of sleep over the past week. 7 subscales: sleep disturbance, snoring, awakened short of breath or with headache, sleep adequacy, and somnolence (range:0-100); sleep quantity (range:0-24), and optimal sleep (yes: 1, no: 0). 6 and 9 item index measures of sleep disturbance were constructed to provide composite scores. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range * 100); total score range: 0 to 100; higher score = greater intensity of attribute. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg-0.5
Pregabalin 330 mg5.2
Placebo5.0

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Change From Baseline in MOS-SS - Snoring Score at Week 14

Participant-rated 12-item questionnaire to assess key constructs of sleep over the past week. 7 subscales: sleep disturbance, snoring, awakened short of breath or with headache, sleep adequacy, and somnolence (range:0-100); sleep quantity (range:0-24), and optimal sleep (yes: 1, no: 0). 6 and 9 item index measures of sleep disturbance were constructed to provide composite scores. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range * 100); total score range: 0 to 100; higher score = greater intensity of attribute. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg-3.5
Pregabalin 330 mg5.4
Placebo-0.6

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Loge 28-day Seizure Rate for All Partial Onset Seizures During the Double-blind Maintenance Phase

Seizures were recorded and documented in a daily Seizure Diary by the participants, family member, caregiver, or legal guardian. Simple partial seizures without a visible motor component (ie, lacking visible movements during the seizure) were not counted toward eligibility, or in the primary or secondary efficacy analyses. Natural logarithm of the 28-day seizure rate was reported in this outcome measure. (NCT01262677)
Timeframe: Week 2 to Week 14

Interventionln(28-day seizure rate) (Least Squares Mean)
Pregabalin 165 mg1.91
Pregabalin 330 mg1.77
Placebo1.88

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Frequency of Secondary Generalized Tonic-clonic Seizures (SGTC) During the Double-blind Treatment Phase

Seizures were recorded and documented in a daily Seizure Diary by the participants, family member, caregiver, or legal guardian. Simple partial seizures without a visible motor component (ie, lacking visible movements during the seizure) were not counted toward eligibility, or in the primary or secondary efficacy analyses. (NCT01262677)
Timeframe: Week 0 to Week 14

Interventionseizures per 28 days (Mean)
Pregabalin 165 mg3.99
Pregabalin 330 mg4.43
Placebo7.51

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Percentage of Participants With New or Intensified Physical Examination Findings During the Double-blind Treatment Phase

Physical examinations included general appearance (including hight at baseline), vital sign (sitting heart rate and sitting blood pressure), weight, skin (examination for the presence of rash), HEENT (examinatin of head, eyes, ears, nose and throat), chest ausculation of lung fields), cardiovascular (ausculatin of heart sounds (S1 and S2) and for the presence of murmurs, gallops, or rubs), gastrointestinal (abdominal rigidity and tenderness), an extremities (e.g. edema). Clinically significant physical examination abnormalities were considered as adverse events based on investigator's discretion. (NCT01262677)
Timeframe: Day 1 to Week 15

,,
Interventionpercentage of participants (Number)
GeneralSkinHeadEarsEyesNoseThroatLungsHeartAbdomenExtremitiesOther
Placebo0.04.50.00.93.61.81.80.00.00.01.810.9
Pregabalin 165 mg1.02.01.03.01.00.00.00.01.00.02.014.0
Pregabalin 330 mg2.76.21.81.82.70.00.00.00.00.02.77.1

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Percentage of Participants With Relevant ECG Interval-increases From Baseline During the Double-blind Treatment Phase

The original ECG was reviewed by the investigator and kept on site as part of source documentation. A central ECG reader was also used for this study. 25/50% represents ≥25% or ≥50% increase over baseline respectively, based on cut points. Cut points are 100 ms for QRS and 200 ms for PR. (NCT01262677)
Timeframe: Week 15

,,
Interventionpercentage of participants (Number)
Max PR interval rise:%change≥25/50%Max QRS complex rise:%change≥25/50%Max. QTcB interval rise: 30≤x<60Max. QTcB interval rise: ≥60Max. QTcF interval rise: 30≤x<60Max. QTcF interval rise: ≥60
Placebo2.11.03.10.02.10.0
Pregabalin 165 mg1.11.15.40.03.20.0
Pregabalin 330 mg1.01.91.91.91.90.0

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Percentage of Participants With Self-injurious or Suicidal Ideation or Behavior on Columbia Classification Algorithm of Suicide Assessment (C-CASA)

C-CASA is described as a standardized suicidal rating system. The C-CASA has eight categories (4 suicidal events: completed suicide, suicide attempt, preparatory act toward imminent suicidal behavior (PAISB), and suicidal ideation; 2 nonsuicidal events: self-injurious behavior, no suicidal intent (SIB-NSI) and other no deliberate self-harm, and 2 indeterminate or potentially suicidal events: self-injurious behavior, suicidal intent unknown and not enough information) that distinguish suicidal events from nonsuicidal events and indeterminate or potentially suicidal events. (NCT01262677)
Timeframe: Week -8 (Screening), Week 0 (Baseline), and Week 14 (double-blind treatment phase)

,,
Interventionpercentage of participants (Number)
Suicide attempt (Lifetime prior to Screening)PAISB (Lifetime prior to Screening)Suicidal ideation (Lifetime prior to Screening)SIB-NSI (Lifetime prior to Screening)Suicide attempts at Week 0PAISB at Week 0Suicidal ideation at Week 0SIB-NSI at Week 0Suicidal ideation at Week 14
Placebo5.54.514.50.90.00.02.70.01.8
Pregabalin 165 mg2.01.011.01.01.00.08.01.04.0
Pregabalin 330 mg1.81.810.60.90.90.97.10.02.7

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Log Transformed 28-day SGTC Rate for All SGTCs During the Double-blind Maintenance Phase

Seizures were recorded and documented in a daily Seizure Diary by the participants, family member, caregiver, or legal guardian. Simple partial seizures without a visible motor component (ie, lacking visible movements during the seizure) were not counted toward eligibility, or in the primary or secondary efficacy analyses. Natural logarithm of the 28-day seizure rate was reported in this outcome measure. (NCT01262677)
Timeframe: Week 2 to Week 14

Interventionln (seizures per 28 days) (Least Squares Mean)
Pregabalin 165 mg0.46
Pregabalin 330 mg0.48
Placebo0.48

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Change From Baseline in Hospital Anxiety and Depression Scale - Depression (HADS-D) Total Score at Week 14

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg-0.5
Pregabalin 330 mg-0.8
Placebo-0.1

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Disturbance Score at Week 14

Participant-rated 12-item questionnaire to assess key constructs of sleep over the past week. 7 subscales: sleep disturbance, snoring, awakened short of breath or with headache, sleep adequacy, and somnolence (range:0-100); sleep quantity (range:0-24), and optimal sleep (yes: 1, no: 0). 6 and 9 item index measures of sleep disturbance were constructed to provide composite scores. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range * 100); total score range: 0 to 100; higher score = greater intensity of attribute. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg-3.9
Pregabalin 330 mg-1.5
Placebo-1.9

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Change From Baseline in Medical Outcomes Study Sleep Scale (MOS-SS) - Sleep Problems Index II Score at Week 14

Participant-rated 12-item questionnaire to assess key constructs of sleep over the past week. 7 subscales: sleep disturbance, snoring, awakened short of breath or with headache, sleep adequacy, and somnolence (range:0-100); sleep quantity (range:0-24), and optimal sleep (yes: 1, no: 0). 6 and 9 item index measures of sleep disturbance were constructed to provide composite scores. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range * 100); total score range: 0 to 100; higher score = greater intensity of attribute. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg-2.4
Pregabalin 330 mg0.7
Placebo0.7

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Change From Baseline in MOS-SS - Awaken Short of Breath or With Headache Score at Week 14

Participant-rated 12-item questionnaire to assess key constructs of sleep over the past week. 7 subscales: sleep disturbance, snoring, awakened short of breath or with headache, sleep adequacy, and somnolence (range:0-100); sleep quantity (range:0-24), and optimal sleep (yes: 1, no: 0). 6 and 9 item index measures of sleep disturbance were constructed to provide composite scores. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range * 100); total score range: 0 to 100; higher score = greater intensity of attribute. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionunits on a scale (Mean)
Pregabalin 165 mg0.2
Pregabalin 330 mg1.0
Placebo-0.8

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Change From Baseline in MOS-SS - Quantity of Sleep (Hours) at Week 14

Participant-rated 12-item questionnaire to assess key constructs of sleep over the past week. 7 subscales: sleep disturbance, snoring, awakened short of breath or with headache, sleep adequacy, and somnolence (range:0-100); sleep quantity (range:0-24), and optimal sleep (yes: 1, no: 0). 6 and 9 item index measures of sleep disturbance were constructed to provide composite scores. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range * 100); total score range: 0 to 100; higher score = greater intensity of attribute. (NCT01262677)
Timeframe: Baseline, Week 14

Interventionhours (Mean)
Pregabalin 165 mg0.2
Pregabalin 330 mg-0.1
Placebo-0.1

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Percent of Participants Reporting Optimal Sleep on the MOS-SS - Optimal Sleep Subscale

Optimal sleep was considered between 7 to 8 hours of average sleep per night inclusive, while average sleep less than or greater than the 7 to 8 hour of average sleep per night was non-optimal. (NCT01262677)
Timeframe: Week 14

Interventionpercentage of participants (Number)
Pregabalin 165 mg67.7
Pregabalin 330 mg60.2
Placebo60.2

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Percentage Change From Baseline in 28-day Partial Seizure Rate During the Double-blind Treatment Phase

Seizures were recorded and documented in a daily Seizure Diary by the participants, family member, caregiver, or legal guardian. Simple partial seizures without a visible motor component (ie, lacking visible movements during the seizure) were not counted toward eligibility, or in the primary or secondary efficacy analyses. Natural logarithm of the 28-day seizure rate was reported in this outcome measure. (NCT01262677)
Timeframe: Week 0 to Week 14

Interventionln (seizures per 28 days) (Least Squares Mean)
Pregabalin 165 mg-15.00
Pregabalin 330 mg-31.54
Placebo-5.70

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Percentage of Participants With ≥50% Reduction in 28-day SGTC Seizure Rate From Baseline During the Double-blind Treatment Phase

Seizures were recorded and documented in a daily Seizure Diary by the participants, family member, caregiver, or legal guardian. Simple partial seizures without a visible motor component (ie, lacking visible movements during the seizure) were not counted toward eligibility, or in the primary or secondary efficacy analyses. (NCT01262677)
Timeframe: Week 0 to Week 14

Interventionpercentage of participants (Number)
Pregabalin 165 mg1.0
Pregabalin 330 mg1.9
Placebo1.9

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Benefit, Satisfaction, and Willingness to Continue Measure (BSW): Benefit From Treatment Question

The BSW consisted of 3 single-item measures designed to capture the participant's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. The BSW was read aloud to the participant by the investigator or designated center personnel and then was given to the participant to complete independently. (NCT01262677)
Timeframe: Week 14

,,
Interventionpercentage of participants (Number)
NoLittle benefitMuch benefitNot doneMissing
Placebo22.033.042.21.80.9
Pregabalin 165 mg12.031.054.02.01.0
Pregabalin 330 mg17.923.256.31.80.9

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BSW: Satisfaction From Treatment Question

The BSW consisted of 3 single-item measures designed to capture the participant's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. The BSW was read aloud to the participant by the investigator or designated center personnel and then was given to the participant to complete independently. (NCT01262677)
Timeframe: Week 14

,,
Interventionpercentage of participants (Number)
NoYesMissing
Placebo23.973.42.8
Pregabalin 165 mg13.084.03.0
Pregabalin 330 mg17.980.41.8

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BSW: Willingness to Continue Question

The BSW consisted of 3 single-item measures designed to capture the participant's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. The BSW was read aloud to the participant by the investigator or designated center personnel and then was given to the participant to complete independently. (NCT01262677)
Timeframe: Week 14

,,
Interventionpercentage of participants (Number)
NoYesMissing
Placebo26.670.62.8
Pregabalin 165 mg18.079.03.0
Pregabalin 330 mg22.375.91.8

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Log Transformed (Loge) 28-day Seizure Rate for All Partial Onset Seizures During the Double-blind Treatment Phase

Seizures were recorded and documented in a daily Seizure Diary by the participants, family member, caregiver, or legal guardian. Simple partial seizures without a visible motor component (ie, lacking visible movements during the seizure) were not counted toward eligibility, or in the primary or secondary efficacy analyses. Natural logarithm of the 28-day seizure rate was reported in this outcome measure. (NCT01262677)
Timeframe: Week 0 to Week 14

,,
Interventionln (seizures per 28 days) (Mean)
BaselineWeek 14
Placebo2.321.93
Pregabalin 165 mg2.241.84
Pregabalin 330 mg2.331.80

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Percentage of Participants With a ≥50% Reduction in the 28-day Partial Seizure Rate From Baseline During the Double-blind Treatment Phase

Seizures were recorded and documented in a daily Seizure Diary by the participants, family member, caregiver, or legal guardian. Simple partial seizures without a visible motor component (ie, lacking visible movements during the seizure) were not counted toward eligibility, or in the primary or secondary efficacy analyses. Participants who had a ≥50% reduction in the 28-day partial seizure rate from baseline were defined as a responder, otherwise they were default as a non-responder. (NCT01262677)
Timeframe: Week 0 to Week 14

,,
Interventionpercentage of participants (Number)
ResponderNon-responder
Placebo35.864.2
Pregabalin 165 mg37.862.2
Pregabalin 330 mg45.954.1

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Percentage of Participants With a Relevant Increase in Sitting Blood Pressure (BP) From Baseline During the Double-blind Treatment Phase

Physical examinations included general appearance (including hight at baseline), vital sign (sitting heart rate and sitting blood pressure), weight, skin (examination for the presence of rash), HEENT (examinatin of head, eyes, ears, nose and throat), chest (ausculation of lung fields), cardiovascular (ausculatin of heart sounds (S1 and S2) and for the presence of murmurs, gallops, or rubs), gastrointestinal(abdominal rigidity and tenderness), an extremities (e.g. edema). (NCT01262677)
Timeframe: Day 1 to Week 15

,,
Interventionpercentage of participants (Number)
Maximum increase in systolic BP ≥30 mmHgMaximum increase in diastolic BP ≥20 mmHg
Placebo0.92.8
Pregabalin 165 mg1.05.1
Pregabalin 330 mg1.85.5

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Percentage of Participants With Corrected QT (QTc) Interval Greater Than or Equal to 450 ms

The original ECG was reviewed by the investigator and kept on site as part of source documentation. A central ECG reader was also used for this study. QT interval corrected using the Fridericia formula (QTcF) and QT interval corrected using the Bazett's formula (QTcB) were calculated. (NCT01262677)
Timeframe: Week 15

,,
Interventionpercentage of participants (Number)
Maximum QTcB 450 - <480Maximum QTcB 480 - <500Maximum QTcB ≥500Maximum QTcF 450 - <480Maximum QTcF 480 - <500Maximum QTcF ≥500
Placebo10.00.90.03.60.00.0
Pregabalin 165 mg8.01.00.03.01.00.0
Pregabalin 330 mg5.30.01.82.70.00.0

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Percentage of Participants With Laboratory Test Abnormalities During the Study

Laboratory samples in hematology, chemistry, and urinalysis were analyzed by a cental laboratory. Any laboratory value that was identified as clinically significant was reported as an AE. LLN: Lower limit of normal, ULN: Uper limit of normal, RBC: Red Blood Cell, WBC: White Blood Cell, AST: Aspartate Aminotransferase, ALT: Alanine Aminotransferase, BUN: Blood Urea Nitrogen (NCT01262677)
Timeframe: Day 1 to Week 15

,,
Interventionpercentage of participants (Number)
Hemoglobin (HGB) <0.8xLLN ,Hematocrit (HCT) <0.8xLLNRBC Count <0.8xLLNPlatelets <0.5xLLNPlatelets >1.75xULNWBC Count <0.6xLLNWhite Blood Cell Count >1.5xULNLymphocytes (absolute) <0.8xLLNLymphocytes (absolute) >1.2xULNLymphocytes (%) <0.8xLLNLymphocytes (%) >1.2xULNNeutrophils (absolute) <0.8xLLNNeutrophils (absolute) >1.2xULNNeutrophils (%) <0.8xLLNNeutrophils (%) >1.2xULNBasophils (absolute) >1.2xULNBasophils (%) >1.2xULNEosinophils (absolute) >1.2xULNEosinophils (%) >1.2xULNMonocytes (absolute) >1.2xULNMonocytes (%) >1.2xULNTotal Bilirubin >1.5xULNAST >3.0xULNALT >3.0xULNAlkaline Phosphatase >3.0xULNTotal Protein <0.8xLLNTotal Protein >1.2xULNAlbumin <0.8xLLNAlbumin >1.2xULNBUN >1.3xULNCreatinine >1.3xULNUric Acid >1.2xULNSodium <0.95xLLNSodium >1.05xULNPotassium <0.9xLLNPotassium >1.1xULNChloride <0.9xLLNChloride >1.1xULNCalcium <0.9xLLNCalcium >1.1xULNGlucose <0.6xLLNGlucose >1.5xULNUrine Specific Gravity <1.003Urine Specific Gravity >1.030Urine pH <4.5Urine pH >8Urine Glucose (qualitative) ≥1Urine Ketones (qualitative) ≥1Urine Protein (qualitative) ≥1Urine Blood/Hgb (qualitative) ≥1Urine Nitrite ≥1Urine RBC ≥20Urine WBC ≥20
Placebo0.90.00.00.00.00.00.01.93.81.90.91.91.90.00.00.00.01.93.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.04.80.01.90.01.91.09.513.39.529.6
Pregabalin 165 mg1.00.00.00.00.00.00.04.22.10.01.03.10.01.00.00.00.03.16.30.01.00.00.00.00.00.00.00.00.00.00.01.01.00.02.01.00.00.00.00.00.00.00.01.10.01.10.02.13.28.511.713.34.8
Pregabalin 330 mg0.90.90.00.00.00.90.00.91.80.00.01.80.00.00.00.00.03.74.61.80.00.00.00.00.00.00.00.00.00.00.00.90.00.00.00.00.00.00.00.00.00.91.91.90.01.90.91.92.89.45.70.03.7

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Percentage of Participants With New or Intensified Neurological Examination Findings During the Double-blind Treatment Phase

Neurological examinations included level of consciousness, mental status, cranial nerve assessment, muscle strength, reflexes, pin prick and vibratory sensation (the latter using a 128-Hz tuning fork), coordination and gait. (NCT01262677)
Timeframe: Day 1 to Week 15

,,
Interventionpercentage of participants (Number)
NoneAnyCoordinationCranial nerve functionCranial nerve IICranial nerve IIICranial nerve VCranial nerve VIICranial nerve VIIICranial nerve XIDeep tendon reflexesGait and stationLevel of consciousnessMental stateMotor functionMuscle strengthPain sensationReflexesVibration
Placebo68.231.81.80.00.01.80.00.90.00.02.70.90.91.83.61.91.91.912.0
Pregabalin 165 mg79.021.01.00.00.00.00.01.00.00.03.00.00.01.01.02.00.01.011.1
Pregabalin 330 mg78.821.21.80.90.00.00.00.00.90.01.80.00.01.82.70.00.00.910.8

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Percentage of Participants With 30% Reduction in the Mean Pain Score.

The 30% pain responders were defined as participants with at least a 30% reduction in the mean pain score from SB baseline to DB endpoint. (NCT01270828)
Timeframe: 13 Weeks

InterventionPercentage of participants (Number)
Pregabalin CR DB95.6
Placebo DB83.8

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Change in the Brief Pain Inventory (BPI-sf)

The BPI sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during a 24 hour period prior to evaluation. The BPI sf consists of 5 questions. Questions 1, 2, 3, and 4 measure pain on an 11 point scale from 0 (no pain) to 10 (worst pain possible). Question 5 consists of 7 item subsets which measure the level of interference of pain on daily functions on an 11 point scale from 0 (Does not interfere) to 10 (Completely interferes). (NCT01270828)
Timeframe: Week 19

,
InterventionUnits on a scale (Least Squares Mean)
Pain Severity Index-SB Baseline to Week 19Pain Severity Index-DB Baseline to Week 19Pain Interference Index-SB Baseline to Week 19Pain Interference Index-DB Baseline to Week 19
Placebo DB-13.83.1-17.24.0
Pregabalin CR DB-18.0-0.7-21.9-0.2

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Change in Hospital Anxiety and Depression Scales (HADS)

The HADS is a self administered questionnaire that was designed to screen for the presence of a mood disorder in medically ill patients. To distinguish psychiatric presentations from physical illness, the items focus on subjective disturbance of mood rather than physical signs. The HADS contains 14 items rated on 4 point Likert type scales. Two subscales assess depression and anxiety. Each subscale consists of 7 statements, rated on a scale of 0 to 3 (0 = No anxiety or depression, to 3 = Severe feelings of anxiety or depression). Separate scores are calculated for each subscale ranging from 0 to 21. Higher scores denote greater severity of depression or anxiety (NCT01270828)
Timeframe: Week 19

,
InterventionUnits on a scale (Least Squares Mean)
HADS-Anxiety-SB Baseline to Week 19HADS-Anxiety-DB Baseline to Week 19HADS-Depression-SB Baseline to Week 19HADS-Depression-DB Baseline to Week 19
Placebo DB-1.10.9-1.20.8
Pregabalin CR DB-1.80.1-1.80.2

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Change From Baseline to Endpoint in Weekly Mean Pain Score.

The pain numeric rating scale (NRS Pain) consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). A rating of 1-3 is considered mild pain; 4-6, moderate pain; and 7-10, severe pain (NCT01270828)
Timeframe: SB Baseline (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19

,
InterventionUnits on a scale (Least Squares Mean)
SB Baseline to Week 19DB Baseline to Week 19
Placebo DB-3.950.87
Pregabalin CR DB-4.89-0.04

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Number of Participants With Loss of Therapeutic Response.

Loss of Therapeutic Response (LTR) is defined as <30% pain response relative to the single blind phase baseline or patient discontinuation due to lack of efficacy or adverse events in the double blind phase of the study. For the calculation of <30% pain response relative to baseline, baseline will be defined as the mean of the last 7 observations prior to the start of SB treatment, which will be compared with the 7 days rolling average of pain response in DB phase. Participants may be discontinued due to lack of efficacy in this study at the discretion of the study physician. (NCT01270828)
Timeframe: 13 Weeks

InterventionParticipants (Number)
Pregabalin CR DB29
Placebo DB63

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Percentage of Participants With 50% Reduction in the Mean Pain Score.

The 50% pain responders were defined as participants with at least a 50% reduction in the mean pain score from SB baseline to DB endpoint. (NCT01270828)
Timeframe: 13 Weeks

InterventionPercentage of participants (Number)
Pregabalin CR DB88.3
Placebo DB68.6

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The MOS-SS-Optimal Sleep.

"The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week.~The optimal sleep score is a dichotomous 'Yes' or 'No' rating, where 'Yes' indicates optimal sleep (average 7-8 hours per night) and 'No' indicates not optimal sleep. The percentage of participants with optimal sleep is presented here." (NCT01270828)
Timeframe: Week 6 and Week 19

,
InterventionPercentage of participants (Number)
Week 6 (N=208,205)Week 19 (N=204,197)
Placebo DB62.454.8
Pregabalin CR DB58.754.9

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Percentage of Participants With Suicidal Behaviour/Ideation

Percentage of participants with suicidal behavior/ideation were noted as Baseline, Weeks 6, 11, 15, 19 and 20. (NCT01270828)
Timeframe: Baseline, Weeks 6, 11, 15, 19 and 20

,
InterventionPercentage of participants (Number)
SB BL(N=208,205)Week 6 (N=208,205)Week 11 (N=194,178)Week 15 (N=183,167)Week 19 (N=204,197)Week 20 (N=199,194)
Placebo DB0.500000
Pregabalin CR DB000000

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Percentage of Participants With Change in the Patient Global Impression of Change (PGIC) Score

The PGIC is a participant-rated instrument that has been used in chronic pain and fibromyalgia studies to rate change in a patient's overall status. This single item instrument uses a 7 point Likert scale, anchored by (1) very much improved, to (7) very much worse. (NCT01270828)
Timeframe: Week 19

,
InterventionPercentage of participants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Placebo DB23.130.319.012.87.27.20.5
Pregabalin CR DB31.536.916.710.32.51.50.5

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Percentage of Participants With Benefit From Treatment, Satisfaction With Treatment and Willingness to Continue Treatement (BSW)

The BSW is administered by the study physician or designated site personnel and consists of three single item measures designed to capture the patient's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. (NCT01270828)
Timeframe: Week 19

,
InterventionPercentage of participants (Number)
Benefit from treatmentSatisfaction with treatmentWillingness to continue treatment
Placebo DB93.390.781.3
Pregabalin CR DB98.596.087.6

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Number of Participants With Adverse Events

"An adverse event (AE) is any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event need not necessarily have a causal relationship with the treatment or usage. A serious adverse event is any untoward medical occurrence at any dose that: Results in death; Is life-threatening (immediate risk of death); Requires inpatient hospitalization or prolongation of existing hospitalization; Results in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions); or Results in congenital anomaly/birth defect. The study physician used the adjective severe to those AEs that interfere significantly with participant's usual function." (NCT01270828)
Timeframe: Baseline to Week 20

,,
InterventionParticipants (Number)
Participants with AEsParticipants with Serious AEsParticipants with Severe AEs
Placebo DB6333
Pregabalin CR DB8079
Pregabalin CR SB4411735

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Change in the Weekly NRS-Pain (1-Week Recall).

The pain numeric rating scale (NRS Pain) consists of an 11 point NRS ranging from 0 (no pain) to 10 (worst possible pain). A rating of 1-3 is considered mild pain; 4-6, moderate pain; and 7-10, severe pain. Participants were asked to rate their pain over the past week. (NCT01270828)
Timeframe: SB Baseline (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19

,
InterventionUnits on a scale (Least Squares Mean)
SB Baseline to Week 19DB Baseline to Week 19
Placebo DB-3.90.9
Pregabalin CR DB-5.0-0.1

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Change in the Short Form 36 Health Survey (SF-36)

The SF 36 is a self administered, validated questionnaire that measures each of the following 8 health aspects: Physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception over the past week. The score for a section is an average of the individual question scores, which are scaled 0-100 (100=highest level of functioning) where, higher scores indicate a better health related quality of life. (NCT01270828)
Timeframe: Week 19

,
InterventionUnits on a scale (Least Squares Mean)
Physical Component-SB BL to wk 19(N=202,195)Physical Component-DB BL to wk 19(N=202,195)Mental Component-SB BL to wk 19(N=202,195)Mental Component-DB BL to wk 19(N=202,195)Physical functioning-SB BL to wk 19Physical functioning-DB BL to wk 19Role-Physical-SB BL to wk 19Role-Physical-DB BL to wk 19Bodily pain-SB BL to wk 19Bodily pain-DB BL to wk 19General Health Perception-SB BL to wk19(N=202,195)General Health Perception-DB BL to wk19(N=202,195)Vitality-SB BL to wk 19(N=202,195)Vitality-DB BL to wk 19(N=202,195)Social Functioning-SB BL to wk 19Social Functioning-DB BL to wk 19Role-Emotional-SB BL to wk 19Role-Emotional-DB BL to wk 19Mental Health-SB BL to wk 19(N=202,195)Mental Health-DB BL to wk 19(N=202,195)
Placebo DB5.6-2.35.5-2.28.9-4.913.9-7.723.6-6.28.2-4.010.7-6.515.7-4.311.6-5.49.5-3.7
Pregabalin CR DB7.50.16.4-1.111.7-1.418.9-2.431.01.411.31.413.7-3.518.5-2.115.0-1.411.1-1.3

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Change in the MOS-SS-Quantity of Sleep.

"The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week.~The item Quantity of sleep of MOS-SS is presented here." (NCT01270828)
Timeframe: SB Baseline (BL) (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19

,
InterventionHours (Least Squares Mean)
Quantity of sleep-SB BL to wk 19(N=203,192)Quantity of sleep-DB BL to wk 19(N=202,192)
Placebo DB0.7-0.4
Pregabalin CR DB0.9-0.1

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Change in the Medical Outcomes Study-Sleep Scale (MOS-SS).

The MOS-SS is a validated self administered questionnaire consisting of 12 items that assess key constructs of sleep. The scale has been found reliable and valid with good overall measurement properties. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9 item overall sleep problems index assessing sleep over the past week. Scores are transformed (actual raw score minus lowest possible score divided by possible raw score range multiplied by 100); total score range = 0 to 100; higher score indicates greater intensity of attribute. (NCT01270828)
Timeframe: SB Baseline (BL) (Enrollment) to Week 19 and DB Baseline (Week 6) to Week 19

,
InterventionUnits on a scale (Least Squares Mean)
Sleep Problems Index I-SB BL to wk 19(N=202,195)Sleep Problems Index I-DB BL to wk 19(N=202,195)SleepProblems Index II-SB BL to wk 19(N=202,195)SleepProblems Index II-DB BL to wk 19(N=202,194)Sleep Disturbance-SB BL to wk 19Sleep Disturbance-DB BL to wk 19Snoring-SB BL to wk 19(N=202,194)Snoring-DB BL to wk 19(N=201,194)Awaken short of breath/headache-SB BL to wk 19Awaken short of breath/headache-DB BL to wk 19Sleep adequacy-SB BL to wk 19Sleep adequacy-DB BL to wk 19(N=202,195)Somnolence-SB BL to wk 19(N=202,195)Somnolence-DB BL to wk 19(N=203,194)
Placebo DB-16.74.4-17.44.3-21.17.6-4.70.8-10.4-0.217.5-6.0-12.0-0.9
Pregabalin CR DB-19.91.2-21.20.2-28.3-1.1-3.3-0.6-11.9-1.219.9-3.3-12.0-0.7

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Participants With Secondary LTR Based on 5 Day Rolling Average Diary Results

"A secondary LTR endpoint (S-LTR) was defined as the 5 day rolling average pain score during DB, compared to the 5 day randomization baseline pain score. As a secondary endpoint, S-LTR was defined as:~At least a 30% increase in the 5 days rolling average pain score during DB relative to the 5 Day randomization baseline pain score~A 5 days rolling average pain score ≥4. Participants who discontinue due to lack of efficacy or adverse events in the DB phase of the study will also be counted as an LTR." (NCT01270828)
Timeframe: 13 Weeks

InterventionParticipants (Number)
Pregabalin CR DB49
Placebo DB87

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Change in Mean Daily Sleep Interference Scores

The pain related sleep interference item rating scale is scored on an 11 point numeric rating scale (NRS Sleep). It is self administered by the subject in order to rate how pain has interfered with their sleep during the past 24 hours, ranging from 0 (pain does not interfere with sleep) to 10 (completely interferes (unable to sleep due to pain)). Participants are to describe how their pain has interfered with their sleep during the past 24 hours by choosing the appropriate number on the numeric rating scale. (NCT01270828)
Timeframe: Week 19

,
InterventionUnits on a scale (Least Squares Mean)
SB Baseline to Week 19 (N=205,203)DB Baseline to Week 19 (N=206,204)
Placebo DB-3.50.7
Pregabalin CR DB-4.5-0.2

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Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Total Sleep Time at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. Subjective total sleep time was the subjective estimate of the total amount of time the participant was asleep after lights out until final awakening. (NCT01271933)
Timeframe: Baseline, Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

,
InterventionHours (Mean)
Subjective Total Sleep Time (Week 7)Subjective Total Sleep Time (Week 8)Subjective Total Sleep Time (Week 9)Subjective Total Sleep Time (Week 10)Subjective Total Sleep Time (Week 11)Subjective Total Sleep Time (Week 12)Subjective Total Sleep Time (Week 13)Subjective Total Sleep Time (Week 14)Subjective Total Sleep Time (Week 15)Subjective Total Sleep Time (Week 16)Subjective Total Sleep Time (Week 17)Subjective Total Sleep Time (Week 18)Subjective Total Sleep Time (Week 19)Subjective Total Sleep Time (Week 20)
Placebo (Double Blind Phase)0.50.60.50.50.60.50.60.70.70.70.70.50.60.5
Pregabalin (Double Blind Phase)0.70.90.80.90.90.80.70.90.70.70.70.60.5-0.1

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Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Wake After Sleep Onset and Subjective Latency to Sleep Onset at Double Blind Endpoint Visit

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. (NCT01271933)
Timeframe: Baseline, Double blind endpoint visit (Week 19)

,
InterventionMinutes (Least Squares Mean)
Subjective Wake after Sleep OnsetSubjective Latency to Sleep Onset
Placebo (Double Blind Phase)-20.6-11.9
Pregabalin (Double Blind Phase)-26.2-10.6

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Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Wake After Sleep Onset and Subjective Latency to Sleep Onset at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. (NCT01271933)
Timeframe: Baseline, Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

,
InterventionMinutes (Mean)
Subjective Wake after Sleep Onset (Week 7)Subjective Wake after Sleep Onset (Week 8)Subjective Wake after Sleep Onset (Week 9)Subjective Wake after Sleep Onset (Week 10)Subjective Wake after Sleep Onset (Week 11)Subjective Wake after Sleep Onset (Week 12)Subjective Wake after Sleep Onset (Week 13)Subjective Wake after Sleep Onset (Week 14)Subjective Wake after Sleep Onset (Week 15)Subjective Wake after Sleep Onset (Week 16)Subjective Wake after Sleep Onset (Week 17)Subjective Wake after Sleep Onset (Week 18)Subjective Wake after Sleep Onset (Week 19)Subjective Wake after Sleep Onset (Week 20)Subjective Latency to Sleep Onset (Week 7)Subjective Latency to Sleep Onset (Week 8)Subjective Latency to Sleep Onset (Week 9)Subjective Latency to Sleep Onset (Week 10)Latency to Sleep Onset (Week 11)Subjective Latency to Sleep Onset (Week 12)Subjective Latency to Sleep Onset (Week 13)Subjective Latency to Sleep Onset (Week 14)Subjective Latency to Sleep Onset (Week 15)Subjective Latency to Sleep Onset (Week 16)Subjective Latency to Sleep Onset (Week 17)Subjective Latency to Sleep Onset (Week 18)Subjective Latency to Sleep Onset (Week 19)Subjective Latency to Sleep Onset (Week 20)
Placebo (Double Blind Phase)-32.0-28.0-33.2-26.2-37.4-31.0-31.4-43.3-35.1-35.0-36.2-37.3-23.1-7.1-19.1-12.3-16.0-18.0-18.0-18.8-16.8-21.8-19.1-20.9-20.9-18.7-19.5-28.7
Pregabalin (Double Blind Phase)-27.8-27.4-27.0-26.9-29.0-26.0-22.8-27.0-31.7-25.9-31.5-32.4-27.3-22.5-15.6-19.1-18.4-19.5-18.5-16.3-17.5-20.8-19.4-15.8-23.1-16.3-16.723.0

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Double-Blind Phase: Change From Baseline in FIQ Score at Week 19

The FIQ is a 20-item self-administered questionnaire. FIQ contains 10 subscales, which are combined to yield a total score. There are 11 questions that are related specifically to physical functioning (item 1). The remaining questions assess pain, fatigue, stiffness, difficulty working, and symptoms of anxiousness and depression. The FIQ is scored from 0 to 100, with higher scores indicating more impairment. (NCT01271933)
Timeframe: Baseline, Week 19

,
InterventionUnits on a scale (Least Squares Mean)
Item 1: Physical activitiesItem 2: feel goodItem 3: Work missedItem 4: Do jobItem 5: PainItem 6: FatigueItem 7: RestedItem 8: StiffnessItem 9: AnxietyItem 10: DepressionTotal Score
Placebo (Double Blind Phase)-1.3-3.2-1.0-2.2-2.2-2.4-2.2-2.2-1.7-0.7-19.1
Pregabalin (Double Blind Phase)-1.0-3.0-1.2-2.1-2.7-2.3-2.6-2.4-1.8-0.7-19.6

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Double-Blind Phase: Change From Baseline in HADS Score at Week 19

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT01271933)
Timeframe: Baseline, Week 19

,
InterventionUnits on a scale (Least Squares Mean)
HADS-A Anxiety scaleHADS-D Depression scale
Placebo (Double Blind Phase)-1.6-1.1
Pregabalin (Double Blind Phase)-0.7-1.4

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Double-Blind Phase: Change From Baseline in Mean Daily Pain Score at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

Daily Pain Score: Day 1 pain intensity over past 24 hours recorded on waking every morning. 0-10 NRS: 0 (no pain) to 10 (worst possible pain). (NCT01271933)
Timeframe: Baseline, Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

,
InterventionUnits on a scale (Mean)
Week 7Week 8Week 9Week 10Week 11Week 12Week 13Week 14Week 15Week 16Week 17Week 18Week 19Week 20
Placebo (Double Blind Phase)-3.0-2.7-2.8-2.4-2.6-2.6-2.6-2.5-2.6-2.6-2.5-2.5-2.4-4.9
Pregabalin (Double Blind Phase)-3.9-3.7-3.6-3.7-3.7-3.7-3.6-3.5-3.6-3.4-3.6-3.4-3.4-3.0

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Double-Blind Phase: Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 19-Sleep Disturbance, Snoring, Awakening Short of Breath or With a Headache, Sleep Adequacy, Somnolence, Sleep Problems Index I and Sleep Problems Index II

The MOS-SS is a validated self-administered questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) and two overall sleep problems indices assessing sleep over the past week. Score range for Sleep Disturbance (SD), sleep adequacy (SA), snoring, somnolence, awakening short of breath/headache was 0-100, where higher score=greater SD; greater SA; greater snoring; greater somnolence; greater shortness of breath/headache respectively. Quantity of Sleep (range-0 to 24 hours; higher scores/hours=greater quantity of sleep). Sleep Problem Index I and II: Score Range=0 to 100; higher scores =greater sleep problems. Optimal Sleep (assessed as yes or no), 'Yes' =optimal sleep (average 7-8 hours/night); 'No' =not optimal sleep. (NCT01271933)
Timeframe: Baseline, Week 19

,
InterventionUnits on a scale (Least Squares Mean)
Sleep disturbanceSnoringAwakening Short of Breath/with a HeadacheSleep adequacySomnolenceSleep Problems Index ISleep Problems Index II
Placebo (Double Blind Phase)-15.5-2.9-4.217.1-6.6-13.7-14.0
Pregabalin (Double Blind Phase)-25.4-2.4-8.123.9-11.9-19.5-19.7

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Double-Blind Phase: Change From Baseline in MFI Score at Week 19

The MFI is a 20-item, self-administered questionnaire designed to measure the following dimensions of fatigue: general fatigue, physical fatigue, mental fatigue, reduced motivation, and reduced activity. Items are summed to form subscale scores; there is no overall score. The score range is from 4 to 20, where higher scores indicate greater dysfunction. (NCT01271933)
Timeframe: Baseline, Week 19

,
InterventionUnits on a scale (Least Squares Mean)
General fatiguePhysical fatigueReduced activityReduced motivationMental fatigue
Placebo (Double Blind Phase)-0.10.2-0.30.30.1
Pregabalin (Double Blind Phase)0.1-0.10.01.0-0.1

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Double-Blind Phase: Change From Baseline in SF-36 Score at Week 19

SF-36 is a standardized survey evaluating 8 aspects of functional health and well being: physical and social functioning, physical and emotional role limitations, bodily pain, general health, vitality, mental health. The score for a section is an average of the individual question scores, which are scaled 0-100. Higher scores indicated a better health-related quality of life. (NCT01271933)
Timeframe: Baseline, Week 19

,
InterventionUnits on a scale (Least Squares Mean)
SF-36 Physical FunctioningSF-36 Role-PhysicalSF-36 Pain IndexSF-36 General Health PerceptionsSF-36 VitalitySF-36 Social FunctioningSF-36 Role-EmotionalSF-36 Mental Health IndexPhysical Component ScoreMental Component Score
Placebo (Double Blind Phase)13.716.216.09.315.713.52.25.27.22.4
Pregabalin (Double Blind Phase)12.418.919.23.312.213.33.86.66.82.6

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Double-Blind Phase: Change From Baseline WPAI Questionnaire at Week 19

WPAI: 6 question participant rated questionnaire to determine the degree to which disease state affected work productivity while at work and affected activities outside of work. Subscale scores include percent work time missed due to the health problem; percent impairment while working due to problem; percent overall work impairment due to problem; and percent activity impairment due to problem. Scores scaled as 0 (not affected/no impairment) to 10 (completely affected/impaired). Higher scores indicated greater impairment and less productivity. (NCT01271933)
Timeframe: Baseline, Week 19

,
InterventionUnits on a scale (Least Squares Mean)
Percent Work Time MissedPercent Impairment While WorkingPercent Activity ImpairmentPercent Overall Work Impairment
Placebo (Double Blind Phase)-26.7-15.0-19.6-17.5
Pregabalin (Double Blind Phase)-7.3-14.0-16.4-15.9

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Double-Blind Phase: Number of Participants Who Reported Global Impression of Change (PGIC) at Week 19

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). (NCT01271933)
Timeframe: Week 19

,
InterventionParticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much Worse
Placebo (Double Blind Phase)7111211682
Pregabalin (Double Blind Phase)715149771

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Double-Blind Phase: Number of Participants With Benefit, Satisfaction, and Willingness (BSW) to Continue Data at Visit 9 (3 Component Questions) at Week 19

The questionnaire consists of 3 single-item measures designed to captures the participant's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. (NCT01271933)
Timeframe: Week 19

,
InterventionParticipants (Number)
Benefit from treatment-NoBenefit from treatment-Little benefitBenefit from treatment-much benefitSatisfaction from treatment-very dissatisfiedSatisfaction from treatment-a little dissatisfiedSatisfaction from treatment-a little satisfiedSatisfaction from treatment-very satisfiedWilling to continue treatment-very unwillingWilling to continue treatment-little unwillingWilling to continue treatment-little bit willingWilling to continue treatment-very willing
Placebo (Double Blind Phase)111630681330481134
Pregabalin (Double Blind Phase)31541410103686937

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Number of Participants With Suicidal Ideation Throughout the Study Assessed by Columbia Classification Algorithm of Suicide Assessment (C-CASA)

C-CASA was used to categorize and summarize results from the Sheehan Suicidality Tracking Scale (S-STS) and the Columbia Suicidality Severity Rating Scale (C-SSRS). S-STS was an 8-item prospective rating scale that tracked treatment-emergent suicidal ideation and behaviors. Items 1a, 2 to 6, 7a, 8 were scored on a 5-point Likert scale (ranges 0 [not at all] to 4 [extremely]). Items 1, 1b, and 7 required yes or no responses. S-STS total score range 0-30. Lower score=reduced suicidal tendency. C-SSRS was a participant rated questionnaire to assess suicidal ideation, suicidal behavior, actual attempts (yes or no responses), and intensity of ideation (rated 1=low severity to 5=high severity). Responses on S-STS or C-SSRS were mapped to C-CASA categories as: Completed suicide; suicide attempt; preparatory acts; suicide ideation; self-injurious behavior, intent unknown; not enough information; self-injurious behavior, no suicide intent; other, no deliberate self harm. (NCT01271933)
Timeframe: Week 1 to Week 7 and Week 11 to Week 20

,
InterventionParticipants (Number)
Week 11Week 15Week 19Week 20
Placebo (Double Blind Phase)0131
Pregabalin (Double Blind Phase)3111

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Number of Participants With Suicidal Ideation Throughout the Study Assessed by Columbia Classification Algorithm of Suicide Assessment (C-CASA)

C-CASA was used to categorize and summarize results from the Sheehan Suicidality Tracking Scale (S-STS) and the Columbia Suicidality Severity Rating Scale (C-SSRS). S-STS was an 8-item prospective rating scale that tracked treatment-emergent suicidal ideation and behaviors. Items 1a, 2 to 6, 7a, 8 were scored on a 5-point Likert scale (ranges 0 [not at all] to 4 [extremely]). Items 1, 1b, and 7 required yes or no responses. S-STS total score range 0-30. Lower score=reduced suicidal tendency. C-SSRS was a participant rated questionnaire to assess suicidal ideation, suicidal behavior, actual attempts (yes or no responses), and intensity of ideation (rated 1=low severity to 5=high severity). Responses on S-STS or C-SSRS were mapped to C-CASA categories as: Completed suicide; suicide attempt; preparatory acts; suicide ideation; self-injurious behavior, intent unknown; not enough information; self-injurious behavior, no suicide intent; other, no deliberate self harm. (NCT01271933)
Timeframe: Week 1 to Week 7 and Week 11 to Week 20

InterventionParticipants (Number)
Week 1Week 2Week 3Week 6Week 7
Pregabalin (Single Blind Phase)5641610

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Single-Blind Phase: Change From Baseline at in Actigraphy Functional/Sleep Assessment - Sleep Fragmentation Index Weeks 3, 4, 5, 6 and 7

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Sleep fragmentation index = a measure of sleep relatedness. Sleep fragmentation index calculated from analysis of the periods that participant was not moving (immobile bouts). It is number of immobile bouts that were exactly 1 minute long divided by total number of immobile bouts. Value ranges from 0-100 percent, with low number representing more restful sleep. (NCT01271933)
Timeframe: Baseline, Weeks 3, 4, 5, 6 and 7

InterventionPercentage of immobile bouts (Mean)
Sleep Fragmentation Index (Week 3)Sleep Fragmentation Index (Week 4)Sleep Fragmentation Index (Week 5)Sleep Fragmentation Index (Week 6)Sleep Fragmentation Index (Week 7)
Pregabalin (Single Blind Phase)-0.8-2.5-2.8-2.60.7

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Single-Blind Phase: Change From Baseline in 36-Item Short-Form Health Survey (SF-36) at Week 6

SF-36 is a standardized survey evaluating 8 aspects of functional health and well being: physical and social functioning, physical and emotional role limitations, bodily pain, general health, vitality, mental health. The score for a section is an average of the individual question scores, which are scaled 0-100. Higher scores indicated a better health-related quality of life. (NCT01271933)
Timeframe: Baseline, Week 6

InterventionUnits on a scale (Mean)
SF-36 Physical FunctioningSF-36 Role-PhysicalSF-36 Pain IndexSF-36 General Health PerceptionsSF-36 VitalitySF-36 Social FunctioningSF-36 Role-EmotionalSF-36 Mental Health IndexPhysical Component ScoreMental Component Score
Pregabalin (Single Blind Phase)14.017.820.78.518.212.98.67.97.24.5

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Single-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Minutes of Interrupted Sleep at Weeks 3, 4, 5, 6 and 7

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Minutes of interrupted sleep = minutes awake after sleep onset (analogous to wake-time after sleep onset from polysomnography measurements). (NCT01271933)
Timeframe: Baseline, Weeks 3, 4, 5, 6 and 7

InterventionMinutes (Mean)
Minutes of Interrupted Sleep (Week 3)Minutes of Interrupted Sleep (Week 4)Minutes of Interrupted Sleep (Week 5)Minutes of Interrupted Sleep (Week 6)Minutes of Interrupted Sleep (Week 7)
Pregabalin (Single Blind Phase)-5.3-5.9-7.0-6.60.7

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Single-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Percent Sedentary at Weeks 3, 4, 5, 6 and 7

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Percent sedentary = percent of daytime spent in sedentary activities as determined by the activity counts measured each minute. (NCT01271933)
Timeframe: Baseline, Weeks 3, 4, 5, 6 and 7

InterventionPercent of daytime (Mean)
Percent Sedentary (Week 3)Percent Sedentary (Week 4)Percent Sedentary (Week 5)Percent Sedentary (Week 6)Percent Sedentary (Week 7)
Pregabalin (Single Blind Phase)0.70.70.60.30.2

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Single-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Daytime Activity at Weeks 3, 4, 5, 6 and 7

"Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Total daytime activity = total activity counts during the day." (NCT01271933)
Timeframe: Baseline, Weeks 3, 4, 5, 6 and 7

InterventionCounts of total daytime activity (Mean)
Total daytime activity (Week 3)Total daytime activity (Week 4)Total daytime activity (Week 5)Total daytime activity (Week 6)Total daytime activity (Week 7)
Pregabalin (Single Blind Phase)10264.310588.18635.87134.218420.7

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Single-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Sleep Time at Weeks 3, 4, 5, 6 and 7

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Total sleep time = number of minutes asleep between time of sleep onset to morning awakening. (NCT01271933)
Timeframe: Baseline, Weeks 3, 4, 5, 6 and 7

InterventionHours (Mean)
Total Sleep Time (Week 3)Total Sleep Time (Week 4)Total Sleep Time (Week 5)Total Sleep Time (Week 6)Total Sleep Time (Week 7)
Pregabalin (Single Blind Phase)-0.10.40.30.30.6

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Single-Blind Phase: Change From Baseline in Average Daily Tiredness Score at Weeks 1, 2, 3, 4, 5, 6

The tiredness assessment in the daily interactive voice response system (IVRS) diary consists of an 11-point NRS ranging from zero (not tired) to 10 (extremely tired). Participants rate their tiredness due to fibromyalgia during the past 24 hours by choosing the appropriate number between 0 (not tired) and 10 (extremely tired). (NCT01271933)
Timeframe: Baseline, Weeks 1, 2, 3, 4, 5, 6

InterventionUnits on a scale (Mean)
Week 1Week 2Week 3Week 4Week 5Week 6
Pregabalin (Single Blind Phase)-0.7-1.2-1.6-2.0-2.2-2.3

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Single-Blind Phase: Change From Baseline in Daily SSQ - Subjective Number of Awakenings After Sleep Onset at Weeks 1, 2, 3, 4, 5, 6

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. (NCT01271933)
Timeframe: Baseline, Weeks 1, 2, 3, 4, 5, 6

InterventionNumber of times the participant awakened (Mean)
Subjective No.of Awakenings after Sleep (Week 1)Subjective No.of Awakenings after Sleep (Week 2)Subjective No.of Awakenings after Sleep (Week 3)Subjective No.of Awakenings after Sleep (Week 4)Subjective No.of Awakenings after Sleep (Week 5)Subjective No.of Awakenings after Sleep (Week 6)
Pregabalin (Single Blind Phase)-0.8-1.0-1.1-1.1-1.2-1.2

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Single-Blind Phase: Change From Baseline in Daily SSQ - Subjective Total Sleep Time at Weeks 1, 2, 3, 4, 5, 6

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. (NCT01271933)
Timeframe: Baseline, Weeks 1, 2, 3, 4, 5, 6

InterventionHours (Mean)
Subjective Total Sleep Time (Week 1)Subjective Total Sleep Time (Week 2)Subjective Total Sleep Time (Week 3)Subjective Total Sleep Time (Week 4)Subjective Total Sleep Time (Week 5)Subjective Total Sleep Time (Week 6)
Pregabalin (Single Blind Phase)0.60.60.60.70.70.7

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Single-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Sleep Quality at Weeks 1, 2, 3, 4, 5, 6

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. Participants rated quality of sleep during the past night by selecting a number between 0 (very poor) and 10 (excellent). Mean sleep quality was calculated as the mean of the last seven days, the potential range of responses at each week was therefore 0 (very poor) -10 (excellent), where higher scores indicated better quality of sleep. (NCT01271933)
Timeframe: Baseline, Weeks 1, 2, 3, 4, 5, 6

InterventionUnits on a scale (Mean)
Sleep quality (Week 1)Sleep quality (Week 2)Sleep quality (Week 3)Sleep quality (Week 4)Sleep quality (Week 5)Sleep quality (Week 6)
Pregabalin (Single Blind Phase)1.01.21.51.61.71.7

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Single-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Wake After Sleep and Subjective Latency to Sleep Onset at Weeks 1, 2, 3, 4, 5, 6

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. (NCT01271933)
Timeframe: Baseline, Weeks 1, 2, 3, 4, 5, 6

InterventionMinutes (Mean)
Subjective Wake after Sleep Onset (Week 1)Subjective Wake after Sleep Onset (Week 2)Subjective Wake after Sleep Onset (Week 3)Subjective Wake after Sleep Onset (Week 4)Subjective Wake after Sleep Onset (Week 5)Subjective Wake after Sleep Onset (Week 6)Subjective Latency to Sleep Onset (Week 1)Subjective Latency to Sleep Onset (Week 2)Subjective Latency to Sleep Onset (Week 3)Subjective Latency to Sleep Onset (Week 4)Subjective Latency to Sleep Onset (Week 5)Subjective Latency to Sleep Onset (Week 6)
Pregabalin (Single Blind Phase)-19.1-22.4-25.0-27.5-31.4-32.8-10.3-13.0-15.5-19.6-20.0-16.9

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Single-Blind Phase: Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) at Week 6

The FIQ is a 20-item self-administered questionnaire. FIQ contains 10 subscales, which are combined to yield a total score. There are 11 questions that are related specifically to physical functioning (item 1). The remaining questions assess pain, fatigue, stiffness, difficulty working, and symptoms of anxiousness and depression. The FIQ is scored from 0 to 100, with higher scores indicating more impairment. (NCT01271933)
Timeframe: Baseline, Week 6

InterventionUnits on a scale (Mean)
Item 1: Physical activitiesItem 2: Feel goodItem 3: Work missedItem 4: Do jobItem 5: PainItem 6: FatigueItem 7: RestedItem 8: StiffnessItem 9: AnxietyItem 10: DepressionTotal Score
Pregabalin (Single Blind Phase)-0.9-2.2-0.5-1.5-1.6-1.4-1.7-1.8-1.2-0.6-13.4

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Single-Blind Phase: Change From Baseline in Hospital Anxiety and Depression Scale (HADS) at Week 6

HADS: participant rated questionnaire with 2 subscales. HADS-A assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT01271933)
Timeframe: Baseline, Week 6

InterventionUnits on a scale (Mean)
HADS-A Anxiety scaleHADS-D Depression scale
Pregabalin (Single Blind Phase)-1.8-1.5

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Single-Blind Phase: Change From Baseline in Mean Daily Pain Score at Weeks 1, 2, 3, 4, 5, 6

Daily Pain Score: Day 1 pain intensity over past 24 hours recorded on waking every morning. 0-10 numeric rating scale (NRS): 0 (no pain) to 10 (worst possible pain). (NCT01271933)
Timeframe: Baseline, Weeks 1, 2, 3, 4, 5, 6

InterventionUnits on a scale (Mean)
Week 1Week 2Week 3Week 4Week 5Week 6
Pregabalin (Single Blind Phase)-0.9-1.5-2.0-2.3-2.5-2.6

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Single-Blind Phase: Change From Baseline in Multidimensional Fatigue Inventory (MFI) at Week 6

The MFI is a 20-item, self-administered questionnaire designed to measure the following dimensions of fatigue: general fatigue, physical fatigue, mental fatigue, reduced motivation, and reduced activity. Items are summed to form subscale scores; there is no overall score. The score range is from 4 to 20, where higher scores indicate greater dysfunction. (NCT01271933)
Timeframe: Baseline, Week 6

InterventionUnits on a scale (Mean)
General fatiguePhysical fatigueReduced activityReduced motivationMental fatigue
Pregabalin (Single Blind Phase)-0.20.1-0.20.2-0.1

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Single-Blind Phase: Change From Baseline in Work Productivity and Activity Impairment (WPAI) Questionnaire at Week 6

WPAI: 6 question participant rated questionnaire to determine the degree to which disease state affected work productivity while at work and affected activities outside of work. Subscale scores include percent work time missed due to the health problem; percent impairment while working due to problem; percent overall work impairment due to problem; and percent activity impairment due to problem. Scores scaled as 0 (not affected/no impairment) to 10 (completely affected/impaired). Higher scores indicated greater impairment and less productivity. (NCT01271933)
Timeframe: Baseline, Week 6

InterventionUnits on a scale (Mean)
Percent Work Time MissedPercent Impairment While WorkingPercent Activity ImpairmentPercent Overall Work Impairment
Pregabalin (Single Blind Phase)-5.8-10.0-13.5-12.3

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Single-Blind Phase: Number of Participants Who Reported Global Impression of Change (PGIC) at Week 6

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). (NCT01271933)
Timeframe: Week 6

InterventionParticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much Worse
Pregabalin (Single Blind Phase)24771034616185

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Single-Blind Phase: Number of Participants With Benefit, Satisfaction, Willingness to Continue Measure (BSW) at Week 6

The questionnaire consists of 3 single-item measures designed to captures the participant's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. (NCT01271933)
Timeframe: Week 6

InterventionParticipants (Number)
Benefit from treatment-NoBenefit from treatment-Little benefitBenefit from treatment-much benefitSatisfaction from treatment-very dissatisfiedSatisfaction from treatment-a little dissatisfiedSatisfaction from treatment-a little satisfiedSatisfaction from treatment-very satisfiedWilling to continue treatment-very unwillingWilling to continue treatment-little unwillingWilling to continue treatment-little bit willingWilling to continue treatment-very willing
Pregabalin (Single Blind Phase)691372115259103203683349266

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Minutes of Interrupted Sleep at Double Blind End Point Visit (Week 19)

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Minutes of interrupted sleep = minutes awake after sleep onset (analogous to wake-time after sleep onset from polysomnography measurements). (NCT01271933)
Timeframe: Baseline, Double blind end point visit (Week 19)

InterventionMinutes (Least Squares Mean)
Pregabalin (Double Blind Phase)-3.5
Placebo (Double Blind Phase)-2.3

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Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 6- Quantity of Sleep

The MOS-SS is a validated self-administered questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) and two overall sleep problems indices assessing sleep over the past week. Score range for Sleep Disturbance (SD), sleep adequacy (SA), snoring, somnolence, awakening short of breath/headache was 0-100, where higher score=greater SD; greater SA; greater snoring; greater somnolence; greater shortness of breath/headache respectively. Quantity of Sleep (range-0 to 24 hours; higher scores/hours=greater quantity of sleep). Sleep Problem Index I and II: Score Range=0 to 100; higher scores =greater sleep problems. Optimal Sleep (assessed as yes or no), 'Yes' =optimal sleep (average 7-8 hours/night); 'No' =not optimal sleep. (NCT01271933)
Timeframe: Baseline, Week 6

Interventionhours (Mean)
Pregabalin (Single Blind Phase)0.7

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Percent Sedentary at Double Blind End Point Visit (Week 19)

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Percent sedentary = percent of daytime spent in sedentary activities as determined by the activity counts measured each minute. (NCT01271933)
Timeframe: Baseline, Double blind end point visit (Week 19)

InterventionPercent of daytime (Least Squares Mean)
Pregabalin (Double Blind Phase)-1.4
Placebo (Double Blind Phase)-2.0

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Sleep Fragmentation Index at Double Blind End Point Visit (Week 19)

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Sleep fragmentation index = a measure of sleep relatedness. Sleep fragmentation index calculated from analysis of the periods that participant was not moving (immobile bouts). It is number of immobile bouts that were exactly 1 minute long divided by total number of immobile bouts. Value ranges from 0-100 percent, with low number representing more restful sleep. (NCT01271933)
Timeframe: Baseline, Double blind end point visit (Week 19)

InterventionPercentage of immobile bouts (Least Squares Mean)
Pregabalin (Double Blind Phase)-2.5
Placebo (Double Blind Phase)-0.6

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Daytime Activity at Double Blind End Point Visit (Week 19)

"Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Total daytime activity = total activity counts during the day." (NCT01271933)
Timeframe: Baseline, Double blind end point visit (Week 19)

InterventionCounts of total daytime activity (Least Squares Mean)
Pregabalin (Double Blind Phase)-182.7
Placebo (Double Blind Phase)-6672.2

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment- Total Sleep Time at Double Blind End Point Visit (Week 19)

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Total sleep time = number of minutes asleep between time of sleep onset to morning awakening. (NCT01271933)
Timeframe: Baseline, Double blind end point visit (Week 19)

InterventionHours (Least Squares Mean)
Pregabalin (Double Blind Phase)0.5
Placebo (Double Blind Phase)0.1

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Double-Blind Phase: Change From Baseline in Average Daily Tiredness Score at Double Blind Endpoint Visit

The tiredness assessment in the daily IVRS diary consists of an 11-point NRS ranging from zero (not tired) to 10 (extremely tired). Participants rate their tiredness due to fibromyalgia during the past 24 hours by choosing the appropriate number between 0 (not tired) and 10 (extremely tired). (NCT01271933)
Timeframe: Baseline, Double blind endpoint visit (Week 19)

InterventionUnits on a scale (Least Squares Mean)
Pregabalin (Double Blind Phase)-2.6
Placebo (Double Blind Phase)-2.5

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Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Sleep Quality at Double Blind Endpoint Visit

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. Participants rated quality of sleep during the past night by selecting a number between 0 (very poor) and 10 (excellent). (NCT01271933)
Timeframe: Baseline, Double blind endpoint visit (Week 19)

InterventionUnits on a scale (Least Squares Mean)
Pregabalin (Double Blind Phase)1.9
Placebo (Double Blind Phase)1.4

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Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Number of Awakenings After Sleep Onset at Double Blind Endpoint Visit

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. (NCT01271933)
Timeframe: Baseline, Double blind endpoint visit (Week 19)

InterventionNumber of times the participant awakened (Least Squares Mean)
Pregabalin (Double Blind Phase)-0.5
Placebo (Double Blind Phase)-0.8

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Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Total Sleep Time at Double Blind Endpoint Visit

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. (NCT01271933)
Timeframe: Baseline, Double blind endpoint visit (Week 19)

InterventionHours (Least Squares Mean)
Pregabalin (Double Blind Phase)0.6
Placebo (Double Blind Phase)0.4

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Double-Blind Phase: Change From Baseline in Mean Daily Pain Score at Double Blind Endpoint Visit

Daily Pain Score: Day 1 pain intensity over past 24 hours recorded on waking every morning. 0-10 NRS: 0 (no pain) to 10 (worst possible pain). (NCT01271933)
Timeframe: Baseline, Double blind endpoint visit (Week 19)

InterventionUnits on a scale (Least Squares Mean)
Pregabalin (Double Blind Phase)-2.9
Placebo (Double Blind Phase)-2.5

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Double-Blind Phase: Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 19- Quantity of Sleep

The MOS-SS is a validated self-administered questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) and two overall sleep problems indices assessing sleep over the past week. Score range for Sleep Disturbance (SD), sleep adequacy (SA), snoring, somnolence, awakening short of breath/headache was 0-100, where higher score=greater SD; greater SA; greater snoring; greater somnolence; greater shortness of breath/headache respectively. Quantity of Sleep (range-0 to 24 hours; higher scores/hours=greater quantity of sleep). Sleep Problem Index I and II: Score Range=0 to 100; higher scores =greater sleep problems. Optimal Sleep (assessed as yes or no), 'Yes' =optimal sleep (average 7-8 hours/night); 'No' =not optimal sleep. (NCT01271933)
Timeframe: Baseline, Week 19

Interventionhours (Least Squares Mean)
Pregabalin (Double Blind Phase)0.7
Placebo (Double Blind Phase)0.5

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Double-Blind Phase: Change From Baseline in Weekly Pain Score at Week 19 (1 Week Recall Period)

Weekly pain scores were calculated from the daily pain diary. Daily Pain Score: Day 1 pain intensity over past 24 hours recorded on waking every morning. 0-10 NRS: 0 (no pain) to 10 (worst possible pain). (NCT01271933)
Timeframe: Baseline, Week 19

InterventionUnits on a scale (Least Squares Mean)
Pregabalin (Double Blind Phase)-3.1
Placebo (Double Blind Phase)-2.4

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Double-Blind Phase: Number of Participants With Loss of Therapeutic Response (LTR) Event

Participants who did not maintain at least 30% pain response during the DB phase relative to baseline or were discontinued during DB due to lack of efficacy or an adverse event were considered to have a loss of therapeutic response. (NCT01271933)
Timeframe: Randomization to Week 19

InterventionParticipants (Count of Participants)
Pregabalin (Double Blind Phase)34
Placebo (Double Blind Phase)41

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Double-Blind Phase: Time to Loss of Therapeutic Response (LTR)

The time to loss of therapeutic response (LTR) is the time to loss of pain response (<30% pain response relative to the single-blind (SB) baseline mean pain) or withdrawal due to lack of efficacy or adverse events (in the double blind phase). (NCT01271933)
Timeframe: Randomization to Week 19

InterventionDays (Median)
Pregabalin (Double Blind Phase)58
Placebo (Double Blind Phase)23

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Single-Blind Phase: Change From Baseline in Weekly Pain Score at Week 6 (1 Week Recall Period)

Weekly pain scores were calculated from the daily pain diary. Daily Pain Score: Day 1 pain intensity over past 24 hours recorded on waking every morning. 0-10 NRS: 0 (no pain) to 10 (worst possible pain). (NCT01271933)
Timeframe: Baseline, Week 6

InterventionUnits on a scale (Mean)
Pregabalin (Single Blind Phase)-1.6

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Change From Baseline in Medical Outcomes Study-Sleep Scale (MOS-SS) at Week 6 - Sleep Disturbance, Snoring, Awakening Short of Breath or With a Headache, Sleep Adequacy, Somnolence, Sleep Problems Index I and Sleep Problems Index II

The MOS-SS is a validated self-administered questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) and two overall sleep problems indices assessing sleep over the past week. Score range for Sleep Disturbance (SD), sleep adequacy (SA), snoring, somnolence, awakening short of breath/headache was 0-100, where higher score=greater SD; greater SA; greater snoring; greater somnolence; greater shortness of breath/headache respectively. Quantity of Sleep (range-0 to 24 hours; higher scores/hours=greater quantity of sleep). Sleep Problem Index I and II: Score Range=0 to 100; higher scores =greater sleep problems. Optimal Sleep (assessed as yes or no), 'Yes' =optimal sleep (average 7-8 hours/night); 'No' =not optimal sleep. (NCT01271933)
Timeframe: Baseline, Week 6

InterventionUnits on a scale (Mean)
Sleep disturbanceSnoringAwakening Short of Breath/with a HeadacheSleep adequacySomnolenceSleep Problems Index ISleep Problems Index II
Pregabalin (Single Blind Phase)-21.8-1.0-11.018.9-3.6-16.1-15.9

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Minutes of Interrupted Sleep at Weeks 11, 12, 13, 14 and 15

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Minutes of interrupted sleep = minutes awake after sleep onset (analogous to wake-time after sleep onset from polysomnography measurements). (NCT01271933)
Timeframe: Baseline, Weeks 11, 12, 13, 14 and 15

,
InterventionMinutes (Mean)
Minutes of Interrupted Sleep (Week 11)Minutes of Interrupted Sleep (Week 12)Minutes of Interrupted Sleep (Week 13)Minutes of Interrupted Sleep (Week 14)Minutes of Interrupted Sleep (Week 15)
Placebo (Double Blind Phase)2.5-1.70.4-1.8-0.5
Pregabalin (Double Blind Phase)-9.0-3.0-3.0-3.2-0.4

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Percent Sedentary at Weeks 11, 12, 13, 14 and 15

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Percent sedentary = percent of daytime spent in sedentary activities as determined by the activity counts measured each minute. (NCT01271933)
Timeframe: Baseline, Weeks 11, 12, 13, 14 and 15

,
InterventionPercent of daytime (Mean)
Percent Sedentary (Week 11)Percent Sedentary (Week 12)Percent Sedentary (Week 13)Percent Sedentary (Week 14)Percent Sedentary (Week 15)
Placebo (Double Blind Phase)1.1-1.4-0.9-1.1-1.4
Pregabalin (Double Blind Phase)-0.7-0.8-1.3-2.1-1.5

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Sleep Fragmentation Index at Weeks 11, 12, 13, 14 and 15

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Sleep fragmentation index = a measure of sleep relatedness. Sleep fragmentation index calculated from analysis of the periods that participant was not moving (immobile bouts). It is number of immobile bouts that were exactly 1 minute long divided by total number of immobile bouts. Value ranges from 0-100 percent, with low number representing more restful sleep. (NCT01271933)
Timeframe: Baseline, Weeks 11, 12, 13, 14 and 15

,
InterventionPercentage of immobile bouts (Mean)
Sleep Fragmentation Index (Week 11)Sleep Fragmentation Index (Week 12)Sleep Fragmentation Index (Week 13)Sleep Fragmentation Index (Week 14)Sleep Fragmentation Index (Week 15)
Placebo (Double Blind Phase)0.1-0.4-0.3-0.6-0.9
Pregabalin (Double Blind Phase)-4.4-2.8-2.2-2.4-0.9

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Daytime Activity at Weeks 11, 12, 13, 14 and 15

"Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Total daytime activity = total activity counts during the day." (NCT01271933)
Timeframe: Baseline, Weeks 11, 12, 13, 14 and 15

,
InterventionCounts of total daytime activity (Mean)
Total daytime activity (Week 11)Total daytime activity ((Week 12)Total daytime activity ((Week 13)Total daytime activity ((Week 14)Total daytime activity ((Week 15)
Placebo (Double Blind Phase)-2083.9-6691.1521.8-4523.8-4649.4
Pregabalin (Double Blind Phase)-1894.1-50.7-4362.4-179.7-4138.3

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Double-Blind Phase: Change From Baseline in Actigraphy Functional/Sleep Assessment - Total Sleep Time at Weeks 11, 12, 13, 14 and 15

Actigraphy was assessed with an accelerometer that was worn on the wrist. The accelerometer was programmed to record movements. This information was used to calculate several endpoints reflecting daytime activity, and sleep quality and duration. Total sleep time = number of minutes asleep between time of sleep onset to morning awakening. (NCT01271933)
Timeframe: Baseline, Weeks 11, 12, 13, 14 and 15

,
InterventionHours (Mean)
Total Sleep Time (Week 11)Total Sleep Time (Week 12)Total Sleep Time (Week 13)Total Sleep Time (Week 14)Total Sleep Time (Week 15)
Placebo (Double Blind Phase)0.00.10.10.10.3
Pregabalin (Double Blind Phase)0.50.50.40.40.2

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Double-Blind Phase: Change From Baseline in Average Daily Tiredness Score at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

The tiredness assessment in the daily IVRS diary consists of an 11-point NRS ranging from zero (not tired) to 10 (extremely tired). Participants rate their tiredness due to fibromyalgia during the past 24 hours by choosing the appropriate number between 0 (not tired) and 10 (extremely tired). (NCT01271933)
Timeframe: Baseline, Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

,
InterventionUnits on a scale (Mean)
Week 7Week 8Week 9Week 10Week 11Week 12Week 13Week 14Week 15Week 16Week 17Week 18Week 19Week 20
Placebo (Double Blind Phase)-3.0-2.8-2.9-2.6-2.5-2.5-2.6-2.5-2.6-2.7-2.5-2.4-2.4-4.9
Pregabalin (Double Blind Phase)-3.4-3.3-3.2-3.2-3.1-3.4-3.2-3.2-3.4-3.1-3.4-3.2-3.1-2.7

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Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Sleep Quality at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. Participants rated quality of sleep during the past night by selecting a number between 0 (very poor) and 10 (excellent). Mean sleep quality was calculated as the mean of the last seven days, the potential range of responses at each week was therefore 0 (very poor) -10 (excellent), where higher scores indicated better quality of sleep. (NCT01271933)
Timeframe: Baseline, Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

,
InterventionUnits on a scale (Mean)
Sleep Quality (Week 7)Sleep Quality (Week 8)Sleep Quality (Week 9)Sleep Quality (Week 10)Sleep Quality (Week 11)Sleep Quality (Week 12)Sleep Quality (Week 13)Sleep Quality (Week 14) N=48,43Sleep Quality (Week 15)Sleep Quality (Week 16)Sleep Quality (Week 17)Sleep Quality (Week 18)Sleep Quality (Week 19)Sleep Quality (Week 20)
Placebo (Double Blind Phase)1.91.71.81.71.71.71.92.12.01.91.91.81.53.3
Pregabalin (Double Blind Phase)1.92.02.12.22.32.11.92.22.21.92.22.12.03.1

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Double-Blind Phase: Change From Baseline in Daily Subjective Sleep Questionnaire (SSQ) - Subjective Number of Awakenings After Sleep Onset at Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

The SSQ is designed to capture subjective behavior in participants with disrupted sleep. Participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. (NCT01271933)
Timeframe: Baseline, Weeks 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

,
InterventionNumber of times the participant awakened (Mean)
Subjective No.of Awakenings after Sleep (Week 7)Subjective No.of Awakenings after Sleep (Week 8)Subjective No.of Awakenings after Sleep (Week 9)Subjective No.of Awakenings after Sleep (Week 10)Subjective No.of Awakenings after Sleep (Week 11)Subjective No.of Awakenings after Sleep (Week 12)Subjective No.of Awakenings after Sleep (Week 13)Subjective No.of Awakenings after Sleep (Week 14)Subjective No.of Awakenings after Sleep (Week 15)Subjective No.of Awakenings after Sleep (Week 16)Subjective No.of Awakenings after Sleep (Week 17)Subjective No.of Awakenings after Sleep (Week 18)Subjective No.of Awakenings after Sleep (Week 19)Subjective No.of Awakenings after Sleep (Week 20)
Placebo (Double Blind Phase)-1.0-0.8-1.1-0.9-0.9-0.8-1.0-1.1-1.1-1.0-0.9-1.0-0.9-1.5
Pregabalin (Double Blind Phase)-1.1-1.2-1.2-1.2-1.1-1.1-1.0-1.0-0.8-1.0-1.2-1.1-0.7-1.5

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Patient's Impression (PGIC) at Week 104

The patient's impression (patient global impression of change [PGIC]) at Week 104, as compared to the baseline condition (including the first day of treatment), was rated by participants on a 7-grade scale. (NCT01279850)
Timeframe: At Week 104

InterventionParticipants (Number)
Markedly improvedImprovedSlightly improvedUnchangedSlightly worsenedWorsenedMarkedly worsenedNot assessed
LYRICA Capsules (Pregabalin)9522318371320214

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Physician's Impression (CGIC) at Week 104

The physician's impression (clinical global impression of change [CGIC]) at Week 104, as compared to the baseline condition (including the first day of treatment), was rated by the physician on a 7-grade scale. (NCT01279850)
Timeframe: At Week 104

InterventionParticipants (Number)
Markedly improvedImprovedSlightly improvedUnchangedSlightly worsenedWorsenedMarkedly worsenedNot assessed
LYRICA Capsules (Pregabalin)10827517993700129

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Change From Baseline in Participant-rated Pain Score at Week 104

The pain experienced at Week 104 during the past 24 hours was rated by participants at the time of getting up in the morning on an 11-grade scale, ranging from 0 (no pain) to 10 (the most severe pain possible). Mean change from baseline in participant-rated pain score at Week 104 was presented along with standard deviation. (NCT01279850)
Timeframe: Baseline and at Week 104

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-4.4

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Change From Baseline in Participant-rated Sleep Interference Score at Week 104

The sleep interference (inability to sleep because of pain) experienced at Week 104 during the past 24 hours was rated by participants at the time of getting up in the morning on an 11-grade scale, ranging from 0 (no disturbance) to 10 (totally unable to sleep because of pain). Mean change from baseline in participant-rated sleep interference score at Week 104 was presented along with standard deviation. (NCT01279850)
Timeframe: Baseline and at Week 104

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-3.9

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Clinical Effectiveness Rate

Clinical effectiveness of LYRICA Capsules was determined by the physician based on the following categories: (1) effective, (2) ineffective, or (3) impossible to judge at Week 104 of the treatment. Clinical effectiveness rate, which was defined as the percentage of participants who achieved clinical effectiveness over the total number of the analysis population, was presented along with the corresponding 2-sided 95% CI. (NCT01279850)
Timeframe: At Week 104

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)91.0

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Percentage of Participants With Adverse Drug Reaction

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01279850)
Timeframe: From Week 1 to Week 104 at maximum

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)12.75

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Percentage of Participants With Serious Adverse Drug Reaction

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. A serious ADR was an ADR resulting in any of the following outcomes or deemed significant for any other reason: death; life-threatening experience (immediate risk of dying); initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; congenital anomaly. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01279850)
Timeframe: From Week 1 to Week 104 at maximum

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)0.25

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Percentage of Participants With Adverse Drug Reaction Unexpected From Japanese Package Insert

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. Expectedness of the adverse event was determined according to the Japanese package insert. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01279850)
Timeframe: From Week 1 to Week 104 at maximum

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)0.50

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Colonic Compliance

"Colonic compliance is a measure of the stiffness of the colon, that is, what pressure was needed to reach half the maximum volume of the colon. After the barostat balloon catheter was inserted in the mid-descending or junction of the sigmoid and descending colon, the balloon was inflated. After an initial conditioning distension to 20 mm Hg, colonic compliance was measured by step-wise inflation with increments of 4 mm Hg. Colonic compliance was analyzed by a validated linear interpolation method. The pressure at half maximum volume serves as a summary of colonic compliance." (NCT01331213)
Timeframe: baseline (1 hour before drug administration), post-treatment (1 hour after drug administration)

,
Interventionmm Hg (Mean)
BaselinePost-Treatment
Placebo16.8615.75
Pregabalin18.9615.99

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Colonic Motility Index

The postprandial motility index (MI)=log_e[number of contractions * sum of amplitudes) + 1] A normal fasting average motility index (MI) would be about 12. An increase in MI means an increase in the phasic contractions (in contrast to tone) which is measured as a change in volume of the barostatically-controlled balloon. (Therefore, an increase in MI means that the meal is moving more quickly through the colon.) (NCT01331213)
Timeframe: Approximately 1 hour after meal

,
Interventionlog mm Hg (Mean)
Post-treatment, descending colonPost-treatment, sigmoid colon
Placebo12.2710.21
Pregabalin13.6911.72

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Sensory Threshold for Pain

The sensory threshold for first perception of pain was measured by stepwise inflation of the balloon in increments of 4 mm Hg at 60 second intervals. The balloon was placed in the mid-descending or junction of the sigmoid and descending colon. During this assessment participants were asked to report when they had the first perception of pain. The investigator recorded the threshold pressure at which the participants reported this sensation. (NCT01331213)
Timeframe: approximately 60 minutes after drug administration

Interventionmm Hg (Mean)
Pregabalin36.0
Placebo38.0

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Postprandial Colonic Tone [Reported as the Symmetric Percent [Change} in Baseline Colonic Barostat Balloon Volume

The symmetric percent reduction in baseline colonic barostat balloon volume during the first 30 minutes postprandially (PP) corrected for the preprandial (30 min) tone, (symmetric percent change= 100*log_e[fasting/PP]). A positive symmetric percent change reflects a decrease in barostat balloon volume indicating a reduction in colonic tone. (The balloon was placed in the mid-descending or junction of the sigmoid and descending colon.) (NCT01331213)
Timeframe: The first 30 minutes postprandially, and preprandial (30 minutes)

InterventionSymmetric percentage change (Mean)
Pregabalin-22.34
Placebo-24.45

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Post-treatment Sensory Threshold for Gas

The sensory threshold for first perception of gas was measured by stepwise inflation of the balloon in increments of 4 mm Hg at 60 second intervals. The balloon was placed in the mid-descending or junction of the sigmoid and descending colon. During this assessment participants were asked to report when they had the first perception of gas. The investigator recorded the threshold pressure at which the participants reported this sensation. (NCT01331213)
Timeframe: Approximately 60 minutes after drug administration

Interventionmm Hg (Mean)
Pregabalin24.0
Placebo19.2

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Fasting Colonic Tone

Colonic tone is a measurement of the volume of the colon. Colonic tone was assessed by noting the changes in the balloon volume in the presence of a constant operating pressure in the balloon (in the barostat-manometric assembly placed in the colon.) (NCT01331213)
Timeframe: Approximately 60 minutes after drug administration

InterventionmL (Mean)
Pregabalin120.4
Placebo116.8

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Overall Sensory Ratings in Response to 16, 24, 30 and 36 mm Hg Distensions.

The mm Hg distensions refer to the barostat balloon, which was placed in the mid-descending or junction of the sigmoid and descending colon. Pain sensation was measured by a 100 mm long Visual Analog Scale (VAS). The VAS does not have any pre-set marks between the extremes. For the pain VAS, 0 means no pain and 100 mm means extreme pain. The investigator measures the mark made by the participant in mm and records this for the value of pain. (NCT01331213)
Timeframe: Approximately 60 minutes after drug administration

,
Interventionmm (Mean)
Sensation ratings of pain at 16 mm Hg distensionSensation ratings of pain at 24 mm Hg distensionSensation ratings of pain at 30 mm Hg distensionSensation ratings of pain at 36 mm Hg distension
Placebo52.359.6060.353.7
Pregabalin53.057.4364.059.0

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Change From Baseline in MOS-Sleep Scale, Somnolence Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The somnolence subscale score also ranged from 0 to 100, with lower scores indicating less somnolence. (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-1.22
Placebo-0.88

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Change From Baseline in Pain VAS From the SF-MPQ at Endpoint

The VAS was part of the SF-MPQ scale and reflected the overall pain intensity score. The pain VAS was a horizontal line; 100 mm in length, was self-administered by the participant in order to rate pain from 0 (no pain) to 100 (worst possible pain). (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-25.07
Placebo-21.82

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Change From Baseline in PPI Scale From the SF-MPQ at Endpoint

The PPI was part of the SF-MPQ scale and measured the participant's present pain intensity on a 6-point scale ranging from 0 (no pain) to 5 (excruciating). (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-0.80
Placebo-0.73

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Clinical Global Impression of Change (CGIC) at Endpoint

The CGIC was a clinician-rated global measure that provided a clinically relevant and easy to interpret account of a clinician's perception of the clinical importance of the participant's improvement or worsening during their involvement in a clinical study. Clinicians rated the participant's overall improvement on a 7-point scale where scores ranged from 1 (very much improved) to 7 (very much worse). (NCT01332149)
Timeframe: Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.58
Placebo2.73

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Patient Global Impression of Change (PGIC) Score at Endpoint

The PGIC was a participant-rated global measure that provided a clinically relevant and easy to interpret account of a participant's perception of the clinical importance of their own improvement or worsening during their involvement in a clinical study. Participants rated their overall improvement on a 7-point scale where scores ranged from 1 (very much improved) to 7 (very much worse). (NCT01332149)
Timeframe: Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.60
Placebo2.74

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Percentage of 30 Percent (%) Responders at Endpoint

The DPRS consists of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. A 30% responder was a participant who had 30% reduction or more in mean pain score at the end of the fixed dose phase (Day 63/Week 9) (Study Endpoint) compared to baseline. (NCT01332149)
Timeframe: End of fixed dose phase (Day 63/Week 9)/Early Termination (Study Endpoint)

Interventionpercentage of participants (Number)
Pregabalin50.3
Placebo44.3

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Percentage of Participants Who Had Optimal Sleep at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The MOS optimal sleep subscale was a binary outcome derived from the sleep quantity responses: the response was YES if sleep quantity was 7 or 8 hours per night. (NCT01332149)
Timeframe: Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionpercentage of participants (Number)
Pregabalin43.8
Placebo45.0

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Baseline Hospital Anxiety and Depression Scale (HADS) Scores

The HADS was a self-administered questionnaire that consisted of 2 subscales, 1 measuring anxiety (HADS-A Scale) and the other measuring depression (HADS-D Scale). Each subscale comprised of 7 items; participants assessed how each item applied to them on a scale of 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Subscores from HADS-A (Anxiety) and HADS-D (Depression) were not to be combined. The interpretation of each HADS subscales was as follows: 0-7 normal, 8-10 mild, 11-14 moderate and 15-21 severe. (NCT01332149)
Timeframe: Baseline

,
Interventionunits on a scale (Mean)
Anxiety total scoreDepression total score
Placebo3.674.35
Pregabalin3.764.45

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Baseline Pain Visual Analogue Scale (VAS) and Present Pain Intensity (PPI) Scale

The VAS was part of the Short Form McGill Pain Questionnaire (SF-MPQ) scale and reflected the overall pain intensity score, The pain VAS was a horizontal line; 100 millimeters (mm) in length, was self-administered by the participant in order to rate pain from 0 (no pain) to 100 (worst possible pain). The PPI was part of the SF-MPQ scale and measured the participant's present pain intensity on a 6-point scale ranging from 0 (no pain) to 5 (excruciating). (NCT01332149)
Timeframe: Baseline

,
Interventionunits on a scale (Mean)
VASPPI
Placebo69.062.27
Pregabalin69.082.28

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Change From Baseline in Short Form McGill Pain Questionnaire (SF-MPQ) Score at Weeks 1, 5, and 9

SF-MPQ was assessed according to the participant's answer to the SF-MPQ questionnaire. The score for each composite scale (sensory, affective, and total) was derived by summing the reported intensity value for each item within a particular scale where None=0, Mild=1, Moderate=2, and Severe=3. The sensory score was the sum of the scores of the first 11 pain descriptors (throbbing, shooting, stabbing, sharp, cramping, gnawing, hot-burning, aching, heavy, tender, and splitting) and could range from 0-33. The affective score was the sum of the scores of the last 4 pain descriptors (tiring-exhausting, sickening, fearful, and punishing-cruel) and could range from 0-12. The total score was the sum of the scores of all 15 pain descriptors and could range from 0 to 45. Higher scores indicated greater pain. (NCT01332149)
Timeframe: Baseline; Weeks 1, 5, and 9

,
Interventionunits on a scale (Mean)
Sensory score, Baseline (N=313, 306)Sensory score, Week 1 change (N=311, 304)Sensory score, Week 5 change (N=297, 288)Sensory score, Week 9 change (N=288, 274)Affective score, Baseline (N=313, 307)Affective score, Week 1 change (N=311, 304)Affective score, Week 5 change (N=297, 289)Affective score, Week 9 change (N=287, 274)Total score, Baseline (N=313, 307)Total score, Week 1 change (N=311, 305)Total score, Week 5 change (N=297, 289)Total score, Week 9 change (N=288, 274)
Placebo8.11-1.34-2.47-3.371.20-0.37-0.62-0.629.28-1.70-3.07-4.00
Pregabalin7.90-1.50-2.89-3.871.25-0.41-0.72-0.759.15-1.92-3.61-4.62

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Change From Baseline in Weekly Mean Pain Score at Weeks 1 to 9

The DPRS consists of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. The weekly mean pain score was the sum of the daily scores divided by the number of diary entries during that week. The overall change is the average change from Weeks 1 to 9. (NCT01332149)
Timeframe: Baseline and weekly from Weeks 1 to 9

,
Interventionunits on a scale (Least Squares Mean)
Week 1 change from baseline (N=312, 307)Week 2 change from baseline (N=304, 295)Week 3 change from baseline (N=298, 291)Week 4 change from baseline (N=297, 289)Week 5 change from baseline (N=296, 287)Week 6 change from baseline (N=293, 278)Week 7 change from baseline (N=290, 275)Week 8 change from baseline (N=290, 275)Week 9 change from baseline (N=287, 273)Overall change from baseline
Placebo-0.36-0.71-1.01-1.21-1.39-1.59-1.77-1.88-2.07-1.33
Pregabalin-0.60-0.97-1.25-1.47-1.61-1.84-2.04-2.18-2.32-1.59

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Change From Baseline in Weekly Mean Sleep Interference Score at Weeks 1 to 9

Pain-related sleep interference was assessed on an 11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). Participants were to describe how their pain had interfered with their sleep during the past 24 hours by choosing the appropriate number between 0 and 10. The weekly mean score was the sum of the daily scores divided by the number of diary entries during that week. The overall change is the average change from Weeks 1 to 9. (NCT01332149)
Timeframe: Baseline and weekly from Weeks 1 to 9

,
Interventionunits on a scale (Least Squares Mean)
Week 1 change from baseline (N=311, 307)Week 2 change from baseline (N=303, 295)Week 3 change from baseline (N=297, 291)Week 4 change from baseline (N=296, 289)Week 5 change from baseline (N=295, 287)Week 6 change from baseline (N=292, 278)Week 7 change from baseline (N=289, 275)Week 8 change from baseline (N=289, 275)Week 9 change from baseline (N=286, 273)Overall change from baseline
Placebo-0.26-0.51-0.72-0.86-0.98-1.07-1.25-1.36-1.49-0.94
Pregabalin-0.38-0.66-0.88-1.06-1.14-1.32-1.43-1.59-1.67-1.13

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Change From Baseline in MOS-Sleep Scale, Sleep Problems Index Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The sleep problems index subscale score also ranged from 0 to 100, with lower scores indicating fewer sleep problems. (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-6.71
Placebo-5.88

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Baseline Mean Pain Score

The daily pain rating scale (DPRS) consists of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. (NCT01332149)
Timeframe: Baseline

Interventionunits on a scale (Mean)
Pregabalin6.65
Placebo6.67

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Baseline Mean Sleep Interference Score

Pain-related sleep interference was assessed on an 11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). Participants were to describe how their pain had interfered with their sleep during the past 24 hours by choosing the appropriate number between 0 and 10. (NCT01332149)
Timeframe: Baseline

Interventionunits on a scale (Mean)
Pregabalin5.25
Placebo5.12

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Change From Baseline in HADS Anxiety Total Score at Endpoint

The HADS was a self-administered questionnaire that consisted of 2 subscales, 1 measuring anxiety (HADS-A Scale) and the other measuring depression (HADS-D Scale). Each subscale was comprised of 7 items; participants assessed how each item applied to them on a scale of 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Subscores from HADS-A (Anxiety) and HADS-D (Depression) were not to be combined. The interpretation of each HADS subscales was as follows: 0-7 normal, 8-10 mild, 11-14 moderate and 15-21 severe. (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-0.48
Placebo-0.31

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Baseline Medical Outcomes Study (MOS)-Sleep Scale Scores

The MOS-Sleep Scale was a participant-rated instrument which assesses sleep quantity and quality with 12 items (7 subscale scores: sleep disturbance, snoring, awakening short of breath/with headache, sleep adequacy, somnolence, sleep quantity, optimal sleep; and a 9-item overall sleep problems index). Subscale scores total range: 0-100 (except sleep quantity [range 0-24 hours], optimal sleep [yes:1, no:0]). Higher scores=poorer sleep outcomes (except sleep quantity, adequacy, and optimal sleep). (NCT01332149)
Timeframe: Baseline

,
Interventionunits on a scale (Mean)
Sleep disturbance score (N=313, 307)Snoring score (N=312, 307)Awaken short of breath score (N=313, 307)Quantity of sleep score (N=311, 304)Sleep adequacy score (N=313, 307)Somnolence score (N=312, 307)Sleep problems index score (N=312, 307)
Placebo35.1337.5910.755.9860.8836.0331.21
Pregabalin36.2935.1311.506.0757.3233.8732.19

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Change From Baseline in HADS Depression Total Score at Endpoint

The HADS was a self-administered questionnaire that consisted of 2 subscales, 1 measuring anxiety (HADS-A Scale) and the other measuring depression (HADS-D Scale). Each subscale was comprised of 7 items; participants assessed how each item applied to them on a scale of 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Subscores from HADS-A (Anxiety) and HADS-D (Depression) were not to be combined. The interpretation of each HADS subscales was as follows: 0-7 normal, 8-10 mild, 11-14 moderate and 15-21 severe. (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-0.57
Placebo-0.38

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Change From Baseline in Mean Pain Score at Endpoint

The daily pain rating scale (DPRS) consists of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. The mean endpoint pain score was obtained from the last 7 available DPRS scores of the daily pain diary while the participant was on study medication, up to and including the day after the last Week 8 (Day 57) dose. (NCT01332149)
Timeframe: Baseline and end of fixed dose phase (Day 63/Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.14
Placebo-1.86

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Change From Baseline in Mean Sleep Interference Score at Endpoint

Pain-related sleep interference was assessed on an 11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). Participants were to describe how their pain had interfered with their sleep during the past 24 hours by choosing the appropriate number between 0 and 10. The mean endpoint score was obtained from the last 7 available scores of the daily diary while the participant was on study medication, up to and including the day after the last Week 9 (Day 63) dose. (NCT01332149)
Timeframe: Baseline and end of fixed dose phase (Day 63/Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-1.52
Placebo-1.30

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Change From Baseline in MOS-Sleep Scale, Awaken Short of Breath Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The awaken short of breath subscale also ranged from 0 to 100, with lower scores indicating less difficulty in breathing. (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.10
Placebo-2.31

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Change From Baseline in MOS-Sleep Scale, Quantity of Sleep Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The MOS Sleep Quantity sub-scale scores ranged from 0 to 24 (number of hours slept). (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin0.33
Placebo0.14

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Change From Baseline in MOS-Sleep Scale, Sleep Adequacy Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The sleep adequacy subscale also ranged from 0 to 100, with higher scores indicating greater sleep adequacy. (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin8.87
Placebo7.82

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Change From Baseline in MOS-Sleep Scale, Sleep Disturbance Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. For sleep disturbance, the subscale score also ranged from 0 to 100, with higher scores representing greater sleep disturbance. (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-9.11
Placebo-7.98

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Change From Baseline in MOS-Sleep Scale, Snoring Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The snoring subscale score also ranged from 0 to 100, with lower scores indicating less snoring. (NCT01332149)
Timeframe: Baseline and Day 63 (Week 9)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.78
Placebo-0.53

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Neuropathic Pain

Neuropathic pain incidence: Leeds assessment of neuropathic symptoms and signs (LANSS) score (3 months). Scale of 0 to 24. Higher values represent worse outcomes. (NCT01333956)
Timeframe: 3 months

Interventionunits on a scale (Median)
Control0
50mg Arm0
100mg Arm0
150mg Arm0

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Opioid Usage

Opioid Usage (POD1, POD 3, 2 weeks, 3 months) (NCT01333956)
Timeframe: 3 months

,,,
Interventionmg (Mean)
Preop Total Opioid Use (mg)POD 1 Total Opioid Use (mg)POD 2 Total Opioid Use (mg)POD 3 Total Opioid Use (mg)POD 14 Total Opioid Use (mg)3 months Total Opioid Use (mg)
100mg Arm17576340400
150mg Arm18455536454
50mg Arm18466060363
Control19507055400

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Satisfaction

Satisfaction with pain management (1-10 scale; 1 = very dissatisfied, 10 = very satisfied) (NCT01333956)
Timeframe: 2 weeks

Interventionunits on a scale (Median)
Control9
50mg Arm8
100mg Arm8
150mg Arm8

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Numeric Rating Scale (NRS)

NRS Pain (pre-operative, POD1, POD3, 2 weeks, 3 months, at orthopedic visits). Neuropathic pain incidence: Leeds assessment of neuropathic symptoms and signs (LANSS) score (3 months) (NCT01333956)
Timeframe: 3 months

,,,
Interventionunits on a scale (Mean)
Preop NRS Pain Score with FlexionPOD1 NRS Pain Score with FlexionPOD3 NRS Pain Score with FlexionPOD14 NRS Pain Score with Flexion3 months NRS Pain Score with Flexion
100mg Arm3.92.73.64.51.7
150mg Arm5.72.54.34.21.8
50mg Arm5.42.94.24.91.9
Control4.92.83.942

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Self-assessed Sedation and Confusion

Self-assessed sedation and confusion (POD1). Confusion Assessment Method (CAM score) (pre-operative and on POD1) (NCT01333956)
Timeframe: 1 day postoperatively

,,,
Interventionpercentage of patients (Number)
Drowsiness POD1 [ORSDS]Nausea POD1 [ORSDS]
100mg Arm55.244.8
150mg Arm58.631.0
50mg Arm37.941.4
Control34.534.5

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Postoperative Pain

Pain assessment scale (Numeric Rating Scale) (0=no pain; 10=worst pain imaginable). (NCT01333956)
Timeframe: 2 weeks postoperatively

,,,
Interventionunits on a scale (Mean)
POD14 Pain score with flexionPOD14 Pain score with ambulationPOD14 Pain score at rest
100mg Arm4.53.52.8
150mg Arm4.03.12.7
50mg Arm4.83.82.9
Control43.62.9

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Double-blind Comparative Period: Change in the Overall Quality of Sleep

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the overall quality of sleep.~The improvement, no change or worsening is reported based on the replies scored by the participants given at their End of Continuation Visit." (NCT01352741)
Timeframe: Randomization Visit (Day 22) to Final Evaluation (Day 77)

,
Interventionparticipants (Number)
ImprovementNo changeWorseningMissing
Tapentadol Prolonged Release39632116
Tapentadol Prolonged Release and Pregabalin58592012

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Double-blind Comparative Period: Change in the Number of Awakenings

The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the number of awakenings. Participants were asked: How many times did you wake up during the night? The change in the Number of Awakenings was calculated from the data that participants self-reported for the night prior to their Randomization Visit (Baseline), for the night prior to the Baseline Visit (Day 1) and the night prior to the Final Evaluation Visit (Day 77). A negative change indicates that the number of awakenings in a treatment group have gone down since the Baseline or Randomization Visit. In general pain can interfere with sleep, one potential indicator is the number of awakenings. (NCT01352741)
Timeframe: Baseline Visit (Day 1); Randomization Visit (Day 22) to Final Evaluation Visit (Day 77)

,
InterventionNumber of Awakenings (Mean)
Change from Baseline VisitChange from Randomization Visit
Tapentadol Prolonged Release-1.4-0.2
Tapentadol Prolonged Release and Pregabalin-2.5-0.8

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Double-blind Comparative Period: Change in Short Form Health Survey (SF-12) Mental Health Composite Score (MCS)

The Short Form Health Survey (SF-12) has several brief broad questions on 8 aspects of health (physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional and mental health) that a participant was asked to score over the last week. The mental health summary scores were calculated from the individual responses to two of the 12 questions. A higher score indicates a better participant perceived state of health. All domains were scored on a scale from 0 (lowest level of health) to 100 (highest level of health), with 100 representing the best possible mental health. (NCT01352741)
Timeframe: Baseline Visit (Day 1); Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

,
Interventionunits on a scale (Mean)
Change from Baseline Visit (N=131; N=143)Change from Randomization Visit (N=131; N=143)
Tapentadol Prolonged Release3.90.1
Tapentadol Prolonged Release and Pregabalin6.52.5

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Double-blind Comparative Period: Change in painDETECT Final Assessment

"The painDETECT was a participant completed questionnaire. The questionnaire consists of 14 questions in four domains. Based on these questions a final assessment score was calculated. The minimum score ranged from zero to a maximum of 38. Participants with a score between 0 and 12 were scored as being negative (had no neuropathic pain component). A value between 19 and 38 was rated as being positive (neuropathic component present). Values from 13 to 18 were scored as being unclear. The theoretical range of change in this trial ranged from -38 to 19. A negative change indicated a decrease in their neuropathic component of pain." (NCT01352741)
Timeframe: Baseline Visit (Day 1); Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

,
Interventionunits on a scale (Mean)
Change from BaselineChange from Randomization
Tapentadol Prolonged Release-10.2-6.0
Tapentadol Prolonged Release and Pregabalin-11.0-5.9

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Double-blind Comparative Period: Change in Neuropathic Pain Symptom Inventory (NPSI) Sub-scores and Overall Score Assessment

In the Neuropathic Pain Symptom Inventory (NPSI) the participant rated their symptoms of neuropathic pain. Ten pain questions were answered on an 11-point scale, from 0 (symptom not present) to 10 (symptom at its worst imaginable intensity, e.g. Spontaneous Pressing Pain Subscore). The overall NPSI score was calculated by the summation of all ten responses and ranges between 0 and 100. For pain descriptions burning, pressing, paroxysmal (pain like electric shocks or stabbing), evoked (due to touch) and paresthesia (sensation that is not unpleasant) or dysesthesia (unpleasant) subscores are reported. The overall values reported for all participants that completed the questionnaire are shown. A symptom was absent if the value is 0, the symptom was present in all participants and all participants rated it at its worst possible intensity if a value is 10 (100 for the overall score) . A negative change indicates that the intensity of the symptom has decreased since the start of treatment. (NCT01352741)
Timeframe: Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

,
Interventionunits on a scale (Mean)
Overall ScoreSubscore: Superficial Spontaneous BurningSubscore: Deep Sponatenous Pressing PainSubscore: Paroxysmal PainSubscore: Evoked PainSubscore: Parasthesia/Dysesthesia
Tapentadol Prolonged Release-16.8-1.9-1.4-2.0-1.8-1.4
Tapentadol Prolonged Release and Pregabalin-16.6-2.3-1.4-1.6-1.7-1.5

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Double-blind Comparative Period: Change in Hospital Anxiety and Depression Scale - Depression in the Double-blind Comparative Period Population

The Hospital Anxiety and Depression Scale (HADS) is a self-assessment scale for the symptom severity of anxiety disorders and depression. It comprises 14 items. Seven statements describe depression. Each answer is scored on a four-point scale (0-3). All seven answers are summed to a total score with a maximum score of 21 points. A score below 7 is not considered to indicate depression. A score of 11 or above is considered to be a case of depression. A decrease in values over time indicates that there has been an improvement. A negative change value indicates a decrease in the depression score since the start of treatment. (NCT01352741)
Timeframe: Baseline Visit (Day 1); Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

,
Interventionunits on a scale (Mean)
Change from Baseline VisitChange from Randomization Visit
Tapentadol Prolonged Release-2.0-0.4
Tapentadol Prolonged Release and Pregabalin-3.1-1.3

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Double-blind Comparative Period: Change in Hospital Anxiety and Depression Scale - Anxiety in the Double-blind Comparative Period Population

"The Hospital Anxiety and Depression Scale (HADS) is a self-assessment scale for the symptom severity of anxiety disorders and depression. It comprises 14 items. Seven statements describe anxiety. Each answer is scored on a four-point scale (0-3). All seven answers are summed to a total score with a maximum score of 21 points. A score below 7 is not considered to indicate anxiety. A score of 11 or above is considered to be a case of anxiety.~A negative sign indicates that there has been a decrease in anxiety since the start of treatment." (NCT01352741)
Timeframe: Baseline Visit (Day 1); Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

,
Interventionunits on a scale (Mean)
Change from Baseline VisitChange from Randomization Visit
Tapentadol Prolonged Release-2.2-0.3
Tapentadol Prolonged Release and Pregabalin-3.1-1.2

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Double-blind Comparative Period: Change EuroQol-5 Dimension (EQ-5D) Health Status Index

"The participant scored the EuroQol-5 questionnaire. The EuroQol-5 questionnaire uses a health state classification with 5 dimensions. Each dimension was assessed on a 3-point ordinal scale (1=no problems, 2=some problems, 3=extreme problems). The responses to the five EQ-5D dimensions were scored using a utility-weighted algorithm to derive an EQ-5D health status index score between 0 to 1 (with 1 indicating full health and 0 representing dead). The higher the values (the closer the value is to 1) the better the health status in a treatment group." (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Change from Baseline VisitChange from Randomization Visit
Tapentadol Prolonged Release0.340.09
Tapentadol Prolonged Release and Pregabalin0.430.09

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Double-blind Comparative Period Sleep Evaluation Questionnaire: Change in Latency

The sleep evaluation questionnaire was completed by the participant. The participant was asked: How long after bedtime/lights out did you fall asleep last night [hours]? The values are for the night prior to the visits. The negative change from baseline indicates that the time to falling asleep decreased from baseline in a treatment group. (NCT01352741)
Timeframe: Baseline Visit (Day 1); Randomization Visit (Day 22) to Final Evaluation Visit (Day 77)

,
Interventionhours (Mean)
Change from baseline visitChange from randomization visit
Tapentadol Prolonged Release-0.30.2
Tapentadol Prolonged Release and Pregabalin-0.3-0.2

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Open-label Titration Period: Sleep Evaluation Questionnaire - Number of Awakenings

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the number of awakenings.~How many times did you wake up during the night? The values were calculated from the data that participants self-reported for the night prior to their Randomization Visit (Baseline), for the night prior to the Baseline Visit (Day 1) and the night prior to the Randomization Visit (Day 22).~The participant was asked at each visit: How many times did you wake up during the night?" (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

InterventionNumber of Awakenings (Mean)
Enrollment Visit (Day -12)3.3
Baseline Visit (Day 1)3.9
Randomization Visit (Day 22)2.5

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Open-label Titration Period: Sleep Evaluation Questionnaire - Latency

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the sleep latency.~To assess latency the participant was asked: How long after bedtime/lights out did you fall asleep last night [hours]?" (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

Interventionhours (Mean)
Enrollment Visit (Day -12)1.2
Baseline Visit (Day 1)1.5
Randomization Visit (Day 22)1.3

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End of Open-label Pick-up Period: Average Pain Intensity Score for the Overall Low Back Pain on an 11-point Numeric Rating Scale (NRS-3)

"The recalled average pain intensity score on the NRS-3 was assessed using an 11-point Numeric Rating Scale (NRS). This scale recalls the average pain intensity during the last 3 days. The participant was asked: Please rate your pain intensity by assessing the one number that best describes your pain on average during the last 3 days (the last 72 hours prior to the visit). Where 0 = no pain and 10 indicates pain as bad as you can imagine." (NCT01352741)
Timeframe: Final Evaluation Visit (Day 77)

Interventionunits on a scale (Mean)
Tapentadol Prolonged Release After Tapentadol4.4
Tapentadol Prolonged Release After Tapentadol and Pregabalin4.5

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Double-blind Comparative Period: Change in Worst Pain Intensity Over the Past 24 Hours

"The recalled worst pain intensity during the last 24 hours was assessed using an 11-point Numeric rating scale, where 0 = no pain and 10 = pain as bad as you can imagine.~The participant was asked: Please rate your pain intensity by assessing the one number that best describes your worst pain during the last 24 hours prior to the visit.~A negative change indicates that the pain intensity decreased from the start of the trial." (NCT01352741)
Timeframe: Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

Interventionunits on a scale (Mean)
Tapentadol Prolonged Release-1.7
Tapentadol Prolonged Release and Pregabalin-1.8

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Double-blind Comparative Period: Changes in the Short Form Health Survey (SF-12) Physical Health Composite Score (PCS)

"The Short Form Health Survey (SF-12) has several brief broad questions on 8 aspects of health (physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional and mental health) that a participant was asked to score over the last week. The physical summary scores were calculated from the individual responses to those questions covering physical health. A higher score indicates a better participant perceived state of health. All domains were scored on a scale from 0 (lowest level of health) to 100 (highest level of health), with 100 representing the best possible health state.~The change in the SF-12 score shows an improvement in health from baseline if the values are positive. The higher the value the greater the improvement." (NCT01352741)
Timeframe: Baseline Visit (Day 1); Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

,
Interventionunits on a scale (Mean)
Change from Baseline VisitChange from Randomization Visit
Tapentadol Prolonged Release12.36.2
Tapentadol Prolonged Release and Pregabalin11.15.6

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Change in the Average Pain Intensity Score for the Overall Low Back Pain on an 11-point Numeric Rating Scale (NRS-3)

"The primary endpoint is defined as the comparison of tapentadol prolonged release (PR) 300 mg plus 200 mg per day and the combination of tapentadol PR 300 mg per day and pregabalin 300 mg per day regarding the change in NRS-3 pain intensity scores (recalled average pain intensity score during the last 3 days on 11-point NRS, where 0 is the no pain and 10 is pain as bad as you can imagine) from the randomization visit to the final evaluation visit.~Theoretically a maximum decrease of -10 and an increase of +4 in the pain intensity would have been possible. A negative sign indicates a decrease in pain intensity from the start of treatment. The higher the absolute values, the greater the change since the start of treatment (Baseline visit)." (NCT01352741)
Timeframe: Randomization (Day 22); Final Evaluation Visit (Day 77)

Interventionunits on a scale (Mean)
Tapentadol Prolonged Release-1.6
Tapentadol Prolonged Release and Pregabalin-1.7

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Open-label Titration Period: Sleep Evaluation Questionnaire - Overall Quality of Sleep

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the overall quality of sleep.~The participant rated this categorically as being one of the following: excellent, good, fair or poor." (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,,
Interventionparticipants (Number)
ExcellentGoodFairPoorMissing
Baseline Visit (Day 1)5761492105
Enrollment Visit (Day -12)91101711487
Randomization Visit (Day 22)211731275668

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Open-label Titration Period: Sleep Evaluation Questionnaire - Overall Quality of Sleep in the Double-blind Comparative Period Population

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the overall quality of sleep.~The participant rated this categorically as being one of the following: excellent, good, fair or poor." (NCT01352741)
Timeframe: Baseline Visit (Day 1)

,
Interventionparticipants (Number)
ExcellentGoodFairPoor
Tapentadol Prolonged Release2234272
Tapentadol Prolonged Release and Pregabalin1174982

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Open-label Titration Period: Sleep Evaluation Questionnaire - Overall Quality of Sleep in the Double-blind Comparative Period Population

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the overall quality of sleep.~The participant rated this categorically as being one of the following: excellent, good, fair or poor." (NCT01352741)
Timeframe: Enrollment Visit (Day-12)

,
Interventionparticipants (Number)
ExcellentGoodFairPoorMissing
Tapentadol Prolonged Release13742581
Tapentadol Prolonged Release and Pregabalin53061530

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Open-label Titration Period: Sleep Evaluation Questionnaire - Overall Quality of Sleep in the Double-blind Comparative Period Population

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the overall quality of sleep.~The participant rated this categorically as being one of the following: excellent, good, fair or poor." (NCT01352741)
Timeframe: Randomization Visit (Day 22)

,
Interventionparticipants (Number)
ExcellentGoodFairPoor
Tapentadol Prolonged Release7624822
Tapentadol Prolonged Release and Pregabalin8595626

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Open-label Titration Period: Subject's Satisfaction With Treatment

"Participants rated their satisfaction with the study drug (IMPs) by answering the following question on a 5-point rating scale:~How would you rate your overall satisfaction with your current pain treatment?: Excellent, Very Good, Good, Fair and Poor." (NCT01352741)
Timeframe: End of Open-label Titration Period at Randomization Visit (Day 22)

Interventionparticipants (Number)
PoorFairGoodVery GoodExcellentMissing
Tapentadol Prolonged Release12119178581167

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Open-label Titration Period: Worst Mean Pain Intensity Scores Over the Past 24 Hours

"The recalled worst pain intensity during the last 24 hours was assessed using an 11-point Numeric rating scale, where 0 = no pain and 10 = pain as bad as you can imagine.~The participant was asked: Please rate your pain intensity by assessing the one number that best describes your worst pain during the last 24 hours prior to the visit." (NCT01352741)
Timeframe: Enrollment Visit (Day -14); Baseline Visit (Day 1); Randomization Visit (Day 22)

Interventionunits on a scale (Mean)
Enrollment Visit (N=438)Baseline Visit (N=440)Randomization Visit (N=377)
Tapentadol Prolonged Release7.68.55.8

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Open-label Continuation Period: Average Pain Intensity Score for the Overall Low Back Pain on an 11-point Numeric Rating Scale (NRS-3)

"The recalled average pain intensity score on the NRS-3 was assessed using an 11-point Numeric Rating Scale (NRS). This scale recalls the average pain intensity during the last 3 days. The participant was asked: Please rate your pain intensity by assessing the one number that best describes your pain on average during the last 3 days (the last 72 hours prior to the visit). Where 0 = no pain and 10 indicates pain as bad as you can imagine." (NCT01352741)
Timeframe: Enrollment (Day -14); Baseline Visit (Day 1); Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

Interventionunits on a scale (Mean)
Enrollment Visit (N=56)Baseline Visit (N=57)Randomization Visit (N=57)Final Evaluation Visit (N=59)
Tapentadol Prolonged Release7.37.92.62.6

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Double-blind Comparative Period: Subject's Satisfaction With Treatment

"Participants rated their satisfaction with the study drug (IMPs) by answering the following question on a 5-point rating scale:~How would you rate your overall satisfaction with your current pain treatment?: Excellent, Very Good, Good, Fair and Poor." (NCT01352741)
Timeframe: End of Comparative Period at Final Evaluation Visit (Day 77)

,
Interventionparticipants (Number)
PoorFairGoodVery GoodExcellentMissing
Tapentadol and Pregabalin in the Comparative Period6284343236
Tapentadol in the Comparative Period3324332218

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Double-blind Comparative Period: Clinician Global Impression of Change (CGIC)

"In the Clinician Global Impression of Change (CGIC) the clinician indicated the perceived change over the treatment period. The clinician was requested to choose one of seven categories for each participant. The Clinician rated the participants change as very much improved, much improved, minimally improved, no change, minimally worse, much worse, or very much worse." (NCT01352741)
Timeframe: Randomization Visit (Day 22) to Final Evaluation Visit (Day 77)

,
Interventionparticipants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worseMissing
Tapentadol Prolonged Release265446835010
Tapentadol Prolonged Release and Pregabalin308219102527

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Double-blind Comparative Period: Change in NRS-3 Pain Intensity Score for the Radiating Pain

"NRS-3 pain intensity score (recalled average pain intensity score during the last 3 days on 11-point NRS, where 0 is the no pain and 10 is pain as bad as you can imagine) for radiating pain (pain radiating into or towards the leg, typically of shooting, radiating character, usually radiating below the knee towards the foot).~The value reported represents the change from the randomization visit (i.e., the last 3 days in the titration period) to the end of the double-blind comparative period (i.e., the last 3 days in the comparative period). The theoretical values range from -10 to 10. A negative sign indicates a decrease in pain from the start of treatment. The higher the absolute values, the greater the change since the start of treatment (baseline visit)." (NCT01352741)
Timeframe: Randomization Visit (Day 22); End of Evaluation Visit (Day 77)

Interventionunits on a scale (Mean)
Tapentadol Prolonged Release-1.5
Tapentadol Prolonged Release and Pregabalin-1.9

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Open-label Titration Period: Average Pain Intensity Score for the Overall Low Back Pain on an 11-point Numeric Rating Scale (NRS-3)

"The recalled average pain intensity score on the NRS-3 was assessed using an 11-point Numeric Rating Scale (NRS). This scale recalls the average pain intensity during the last 3 days. The participant was asked: Please rate your pain intensity by assessing the one number that best describes your pain on average during the last 3 days (the last 72 hours prior to the visit). Where 0 = no pain and 10 indicates pain as bad as you can imagine. This is the treatment period prior to the primary outcome period." (NCT01352741)
Timeframe: Enrollment (Day -14); Baseline Visit (Day 1); Randomization Visit (Day 22)

Interventionunits on a scale (Mean)
Enrollment Visit (N=438)Baseline Visit (N=440)Randomization Visit (N=377)
Tapentadol Prolonged Release7.28.35.4

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Open-label Titration Period: painDETECT Assessments

"The painDETECT was a participant completed questionnaire. The questionnaire consists of 14 questions in four domains. Based on these questions a final assessment score was calculated. The minimum score ranged from zero to a maximum of 38. Participants with a score between 0 and 12 were scored as being negative (had no neuropathic pain component). A value between 19 and 38 was rated as being positive (neuropathic component present). Values from 13 to 18 were scored as being unclear." (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

Interventionunits on a scale (Mean)
Enrollment Visit (N=438)Baseline Visit (N=440)Randomization Visit (N=377)
Tapentadol Prolonged Release21.422.716.9

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Open-label Titration Period: Neuropathic Pain Symptom Inventory (NPSI) Overall Score Assessment in the Double-blind Comparative Period Population

In the Neuropathic Pain Symptom Inventory (NPSI) the participant rated their symptoms of neuropathic pain. Ten pain questions were answered on an 11-point scale; from 0 (symptom not present) to 10 (symptom at its worst imaginable intensity, e.g. worst burning imaginable). The overall NPSI score was calculated by the summation of all ten responses and ranges between 0 and 100. For pain descriptions burning, pressing, paroxysmal (pain like electric shocks or stabbing), evoked (due to touch) and paresthesia (sensation that is not unpleasant) or dysesthesia (unpleasant) sub-scores are reported. The overall values reported for all participants that completed the questionnaire are shown. A symptom was absent if the value is 0, the symptom was present in all participants and all participants rated it at its worst possible intensity if a value is 100. (NCT01352741)
Timeframe: Enrollment Visit; Baseline Visit (Day 1); Randomization Visit (Day 22); Final Evaluation Visit (Day 77)

,
Interventionunits on a scale (Mean)
Overall Score Enrollment Visit (N=138, N=149)Overall Score Baseline Visit (N=139, N=149)Overall Score Randomization Visit (N=139, N=149)Overall Score Final Evaluation Visit(N=131, N=143)
Tapentadol Prolonged Release54.862.845.228.9
Tapentadol Prolonged Release and Pregabalin57.665.446.530.5

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Double-blind Comparative Period: Sleep Evaluation Questionnaire - Change in the Number of Hours Slept

The sleep evaluation questionnaire was completed by the participant. The answer was in response to the question: Sleep evaluation: How long did you sleep last night [hours]? The value reported is the change in the number of hours of sleep from baseline. The positive value indicates that there was an increase in the number of hours of sleep in a treatment group. (NCT01352741)
Timeframe: Baseline Visit (Day -12); Randomization Visit (Day 1); Final Evaluation Visit (Day 77)

,
Interventionhours (Mean)
Change from baseline visitChange from randomization visit
Tapentadol Prolonged Release1.20.3
Tapentadol Prolonged Release and Pregabalin1.60.3

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Double-blind Comparative Period: Patient Global Impression of Change (PGIC)

"In the Patient Global Impression of Change (PGIC) the participant indicated the perceived change over the treatment period. PGIC is a 7 point scale where the patient's rates overall improvement. Patients rate their change as very much improved, much improved, minimally improved, no change, minimally worse, much worse, or very much worse." (NCT01352741)
Timeframe: Randomization Visit (Day 22) to Final Evaluation Visit (Day 77)

,
Interventionparticipants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worseMissing
Tapentadol Prolonged Release2844511054010
Tapentadol Prolonged Release and Pregabalin326631105517

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Open-label Titration Period: Sleep Evaluation Questionnaire - Time Slept

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the number of awakenings.~The participant was asked: How long did you sleep last night? [Answered in hours and minutes]." (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

Interventionhours (Mean)
Enrollment Visit (Day -12)5.8
Baseline Visit (Day 1)5.3
Randomization Visit (Day 22)6.4

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Open-label Titration Period: Neuropathic Pain Symptom Inventory (NPSI) Overall Score Assessment

In the Neuropathic Pain Symptom Inventory (NPSI) the participant rated their symptoms of neuropathic pain. Ten pain questions were answered on an 11-point scale; from 0 (symptom not present) to 10 (symptom at its worst imaginable intensity, e.g. worst burning imaginable). The overall NPSI score was calculated by the summation of all ten responses and ranges between 0 and 100. For pain descriptions burning, pressing, paroxysmal (pain like electric shocks or stabbing), evoked (due to touch) and paresthesia (sensation that is not unpleasant) or dysesthesia (unpleasant) sub-scores are reported. The overall values reported for all participants that completed the questionnaire are shown. A symptom was absent if the value is 0, the symptom was present in all participants and all participants rated it at its worst possible intensity if a value is 100. (NCT01352741)
Timeframe: Enrollment Visit; Baseline Visit (Day 1); Randomization Visit (Day 22)

Interventionunits on a scale (Mean)
Overall Score Enrollment Visit (N=438)Overall Score Baseline Visit (N=440)Overall Score Randomization Visit (N=377)
Tapentadol Prolonged Release55.262.742.0

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Open-label Titration Period: Hospital Anxiety and Depression Scale - Depression in the Double-blind Comparative Period Population

The Hospital Anxiety and Depression Scale (HADS) is a self-assessment scale for the symptom severity of anxiety disorders and depression. It comprises 14 items. Seven statements describe depression. Each answer is scored on a four-point scale (0-3). All seven answers are summed to a total score with a maximum score of 21 points. A score below 7 is not considered to indicate depression. A score of 11 or above is considered to be a case of depression. A decrease in values over time indicates that there has been an improvement. (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=139; N=149)
Tapentadol Prolonged Release6.97.66.0
Tapentadol Prolonged Release and Pregabalin7.88.66.8

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Open-label Titration Period: Comparative Double-blind Period Population painDETECT Assessment

"The painDETECT was a participant completed questionnaire. The questionnaire consists of 14 questions in four domains. Based on these questions a final assessment score was calculated. The minimum score ranged from zero to a maximum of 38. Participants with a score between 0 and 12 were scored as being negative (had no neuropathic pain component). A value between 19 and 38 was rated as being positive (neuropathic component present). Values from 13 to 18 were scored as being unclear." (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=138; N=149)
Tapentadol Prolonged Release21.622.417.6
Tapentadol Prolonged Release and Pregabalin21.723.818.4

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Open-label Titration Period: Hospital Anxiety and Depression Scale - Anxiety in the Double-blind Comparative Period Population

"The Hospital Anxiety and Depression Scale (HADS) is a self-assessment scale for the symptom severity of anxiety disorders and depression. It comprises 14 items. Seven statements describe anxiety. Each answer is scored on a four-point scale (0-3). All seven answers are summed to a total score with a maximum score of 21 points. A score below 7 is not considered to indicate anxiety. A score of 11 or above is considered to be a case of anxiety.~A decrease in values over the trial period indicate that there has been an improvement." (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=139; N=149)
Tapentadol Prolonged Release7.47.75.8
Tapentadol Prolonged Release and Pregabalin8.69.07.1

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Open-label Titration Period: EuroQol-5 Dimension (EQ-5D) Health Status Index Score for the Double-blind Comparative Period Population

"The participant scored the EuroQol-5 questionnaire. The EuroQol-5 questionnaire uses a health state classification with 5 dimensions. Each dimension was assessed on a 3-point ordinal scale (1=no problems, 2=some problems, 3=extreme problems). The responses to the five EQ-5D dimensions were scored using a utility-weighted algorithm to derive an EQ-5D health status index score between 0 to 1 (with 1 indicating full health and 0 representing dead). The higher the values (the closer the value is to 1) the better the health status in a treatment group." (NCT01352741)
Timeframe: Enrollment Visit (day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=139; N=149)
Tapentadol Prolonged Release0.320.290.55
Tapentadol Prolonged Release and Pregabalin0.330.180.52

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Open-label Titration Period: Comparative Double-blind Period Population Worst Mean Pain Intensity Scores Over the Past 24 Hours

"The recalled worst pain intensity during the last 24 hours was assessed using an 11-point Numeric Rating Scale (NRS), where 0 = no pain and 10 = pain as bad as you can imagine.~The participant was asked : Please rate your pain intensity by assessing the one number that best describes your worst pain during the past 24 hours prior to the visit." (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=139; N=149)
Tapentadol Prolonged Release7.88.56.3
Tapentadol Prolonged Release and Pregabalin7.58.76.4

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Open-label Titration Period: Comparative Double-blind Period Population Short Form Health Survey (SF-12) Physical Health Composite Score (PCS)

The Short Form Health Survey (SF-12) has several brief broad questions on 8 aspects of health (physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional and mental health) that a participant was asked to score over the last week. The physical and mental summary scores were calculated from the individual responses. A higher score indicates a better perceived state of health. All domains were scored on a scale from 0 (lowest level of health) to 100 (highest level of health), with 100 representing the best possible health state. (NCT01352741)
Timeframe: Enrollment Visit; Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=139; N=149)
Tapentadol Prolonged Release29.928.234.1
Tapentadol Prolonged Release and Pregabalin29.828.534.1

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Open-label Titration Period: Comparative Double-blind Period Population Short Form Health Survey (SF-12) Mental Health Composite Score (MCS)

The Short Form Health Survey (SF-12) has several brief broad questions on 8 aspects of health (physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional and mental health) that a participant was asked to score over the last week. The mental health summary scores were calculated from the individual responses to two of the 12 questions. A higher score indicates a better participant perceived state of health. All domains were scored on a scale from 0 (lowest level of health) to 100 (highest level of health), with 100 representing the best possible mental health. (NCT01352741)
Timeframe: Enrollment Visit; Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=139; N=149)
Tapentadol Prolonged Release46.145.449.2
Tapentadol Prolonged Release and Pregabalin44.843.247.3

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Open-label Titration Period: Sleep Evaluation Questionnaire - Latency in the Double-blind Comparative Period Population

The sleep evaluation questionnaire was completed by the participant. The participant was asked: How long after bedtime/lights out did you fall asleep last night [hours]? The values are for the night prior to the Randomization Visit (Baseline) and for the night prior to the Final Evaluation Visit (12 weeks after randomization). The higher the value the longer it took to fall asleep. Sleep evaluation questionnaire (SQ) items (NCT01352741)
Timeframe: Enrollment Visit (Day -12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionhours (Mean)
Enrollment Visit (N=138, N=149)Baseline Visit (N=139, N=149)Randomization Visit (N=139, N=149)
Tapentadol Prolonged Release1.31.51.1
Tapentadol Prolonged Release and Pregabalin1.31.51.4

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Open-label Titration Period: Radiating Mean Pain Intensity Score for the Comparative Period Population

The NRS-3 pain intensity score at the visits in the open-label titration period for the two comparative double-blind period treatment groups analyzed is reported. NRS-3 pain intensity score (recalled average pain intensity score during the last 3 days on an 11-point NRS) for radiating pain (pain radiating into or towards the leg, typically of shooting, radiating character, usually radiating below the knee towards the foot) is reported. Where 0 = no pain and 10 indicates pain as bad as you can imagine. (NCT01352741)
Timeframe: Enrollment Visit (Day -14); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionunits on a scale (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=139; N=149)
Tapentadol Prolonged Release7.18.15.6
Tapentadol Prolonged Release and Pregabalin6.98.15.7

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Open-label Titration Period: Radiating Pain

The NRS-3 pain intensity score at the visits in the open-label titration period for the two comparative double-blind period treatment groups analyzed is reported. NRS-3 pain intensity score (recalled average pain intensity score during the last 3 days on an 11-point NRS) for radiating pain (pain radiating into or towards the leg, typically of shooting, radiating character, usually radiating below the knee towards the foot) is reported. Where 0 = no pain and 10 indicates pain as bad as you can imagine. (NCT01352741)
Timeframe: Enrollment Visit (Day -14); Baseline Visit (Day 1); Randomization Visit (Day 22)

Interventionunits on a scale (Mean)
Enrollment Visit (N=438)Baseline Visit (N=440)Randomization Visit (N=377)
Tapentadol Prolonged Release7.08.05.3

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Open-label Titration Period: Sleep Evaluation - Number of Awakenings in the Double-blind Comparative Period Population

"The sleep evaluation questionnaire was completed by the participant. The questionnaire measures 4 main concepts: 1 of the 4 main concepts being the number of awakenings.~How many times did you wake up during the night? The values were calculated from the data that participants self-reported for the night prior to their Randomization Visit (Baseline), for the night prior to the Baseline Visit (Day 1) and the night prior to the Randomization Visit (Day 22).~The participant was asked at each visit: How many times did you wake up during the night?" (NCT01352741)
Timeframe: Enrollment Visit (Day-12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
InterventionNumber of Awakenings (Mean)
Enrollment Visit (N=138; N=149)Baseline Visit (N=139; N=149)Randomization Visit (N=139; N=149)
Tapentadol Prolonged Release3.23.62.5
Tapentadol Prolonged Release and Pregabalin3.44.62.7

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Open-label Titration Period: Sleep Evaluation Questionnaire - Number of Hours Slept in the Double-blind Comparative Period Population

"The participants were requested to answer the following question:~How long did you sleep last night [hours]? The values were calculated from the data that participants self-reported for the night prior to their Randomization Visit (Baseline) and for the night prior to the End of the Continuation Visit (12 weeks after randomization)." (NCT01352741)
Timeframe: Enrollment Visit (Day -12); Baseline Visit (Day 1); Randomization Visit (Day 22)

,
Interventionhours (Mean)
Enrollment Visit (N=138, N=149)Baseline Visit (N=139, N=149)Randomization Visit (N=139, N=149)
Tapentadol Prolonged Release5.85.36.2
Tapentadol Prolonged Release and Pregabalin5.75.26.4

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Sleep Evaluation: Number of Participants Who Fell Asleep in Pre-specified Time Duration

Sleep evaluation was performed by assessing number of participants who fell asleep in a particular pre-specified range of time duration, that is, 0-15 minutes, 16-30 minutes, 31-45 minutes, 46-60 minutes and greater than 60 minutes at Day 84 (Week 12). (NCT01364298)
Timeframe: Day 84 (Week 12)

,
Interventionparticipants (Number)
0 to 15 minutes16 to 30 minutes31 to 45 minutes46 to 60 minutesGreater than 60 minutes
Gabapentin/B-complex85331388
Pregabalin72331242

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Percentage of Participants With at Least 30 and 50 Percent (%) Improvement in Numeric Pain Intensity Scale (NPIS) From Baseline at Day 84 (Week 12)

NPIS is a 11-point scale, with 0 representing no pain and 10 representing the worst possible pain. The participants were asked to mark the number that best represents the current level of pain they have experienced during the previous 24 hours. (NCT01364298)
Timeframe: Baseline and Day 84 (Week 12)

,
Interventionpercentage of participants (Number)
At least 30% improvementAt least 50% improvement
Gabapentin/B-complex76.966.0
Pregabalin85.472.4

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Number of Participants With Various Health Conditions Based on Global Impression of Patient Change (GIPC) Scale

GIPC is an assessment that the participant's global change in health condition from start of the study on a 7-point scale (1 = extremely improved, 2 = much improved, 3 = minimally improved, 4 = no change, 5 = minimally worse 6 = much worse, 7 = extremely worse). (NCT01364298)
Timeframe: Baseline and Day 84 (Week 12)

,
Interventionparticipants (Number)
Health: extremely improvedHealth: much improvedHealth: minimally improved
Gabapentin/B-complex627310
Pregabalin476510

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Number of Participants With Various Health Conditions Based on Clinical Global Impression of Change (CGIC) Scale

CGIC is an assessment that the physician performs to assess the participant's global change in health condition from start of the study on a 7-point scale (1 = extremely improved, 2 = much improved, 3 = minimally improved, 4 = no change, 5 = minimally worse 6 = much worse, 7 = extremely worse). (NCT01364298)
Timeframe: Baseline and Day 84 (Week 12)

,
Interventionparticipants (Number)
Health: extremely improvedHealth: much improvedHealth: minimally improved
Gabapentin/B-complex557911
Pregabalin47696

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Change From Baseline in Visual Analogue Scale (VAS) Score at Day 84

VAS is used to rate the pain as per 10 centimeter (cm) line. The pain intensity score ranges from '0=no pain' to '10=worst possible pain'. Change from baseline data has been calculated as value at baseline minus value at Day 84. (NCT01364298)
Timeframe: Baseline and Day 84 (Week 12)

,
Interventioncentimeter (Mean)
Baseline (n=147, 123)Change at Day 84 (n=146, 122)
Gabapentin/B-complex7.04.182
Pregabalin7.14.529

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Change From Baseline in Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) Scale Score at Day 84

The LANSS scale score is 7-item pain scale that consists of grouped sensory description and sensory examination with simple scoring system. Evaluations in two main areas: pain and sensorial exploration. The first 5 questions asks for presence of unpleasant skin sensations (pricking, tingling, pins and needles), appearance of skin (mottled, red, or pink), increased sensitivity of skin to touch, sudden bursts of electric shock sensations, and hot or burning skin sensations. Last 2 questions involve sensory testing for the presence of allodynia and altered pinprick threshold. Different numbers of points, relative to their significance to neuropathic pain, are given to positive answers for maximum of 24 points. A score less than 12 makes unlikely that participant's symptoms are neuropathic in nature, whereas score more than 12 make neuropathic mechanisms likely to be contributing to participant's pain. Change from baseline data has been calculated as value at baseline minus value at Day 84. (NCT01364298)
Timeframe: Baseline and Day 84 (Week 12)

,
Interventionunits on a scale (Mean)
Baseline (n=147, 123)Change at Day 84 (n=146, 122)
Gabapentin/B-complex16.28.082
Pregabalin15.86.967

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Number of Participants With Adverse Events (AEs)

An adverse event (AE) is defined as any untoward medical occurrence in the form of signs, symptoms, abnormal laboratory findings, or diseases that emerges or worsens relative to Baseline during a clinical study with an investigational medicinal product (IMP), regardless of causal relationship and even if no IMP has been administered. (NCT01364298)
Timeframe: Day 7 up to Day 84 (+7 days)

Interventionparticipants (Number)
Gabapentin/B-complex80
Pregabalin93

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Change From Baseline in Average Numeric Pain Intensity Scale (NPIS) Score at Day 84

An average NPIS pain score (daily average records of the past seven days) was evaluated. Numeric pain intensity scale (NPIS) is a 11-point scale, with 0 representing no pain and 10 representing the worst possible pain. The participants were asked to mark the number that best represents the current level of pain they have experienced during the previous 24 hours. Change from baseline data has been calculated as value at baseline minus value at Day 84. (NCT01364298)
Timeframe: Baseline and Day 84 (Week 12)

,
Interventionunits on a scale (Mean)
Baseline (n=147, 123)Change at Day 84 (n=146, 122)
Gabapentin/B-complex6.73.905
Pregabalin6.84.260

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Profile of Mood States (POMS) Score

"POMS is a rating scale, which comprises of 65 items that are evaluated in a 0-4 scale, where 0 means not at all and 4 extremely. The scores for the 65 items are added in various combinations to throw six validated factors which are used to calculate total POMS score: (tension-anxiety) + (depression-dejection) + (anger-hostility)+ (fatigue-Inertia) + (confusion-bewilderment) - (vigor-activity). Score range (-40 to 192). Score -40 denotes the best score and score 192 denotes the worst score." (NCT01364298)
Timeframe: Day 84 (Week 12)

Interventionunits on a scale (Mean)
Gabapentin/B-complex1.3
Pregabalin3.4

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Patient Controlled Analgesia (PCA) Hydromorphone Usage

(NCT01366196)
Timeframe: Postoperative day 1

InterventionmL (Mean)
Control Group (C)44
Pregabalin Group (P)39

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Oral Analgesic Supplementation Use

Tabulate number of patients that used supplemental oral analgesics (NCT01366196)
Timeframe: Day of surgery

InterventionParticipants (Count of Participants)
Control Group (C)25
Pregabalin Group (P)21

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Numerical Pain Rating Scale Score With Physical Therapy on Postoperative Day 1

Pain scores based on a scale of 0 to 10 with 0 being no pain and 10 being the worst pain imaginable. (NCT01366196)
Timeframe: Postoperative Day 1 with Physical Therapy

Interventionunits on a scale (Mean)
Control Group (C)4.3
Pregabalin Group (P)4.5

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Numerical Pain Rating Scale Score on Postoperative Day 1 at Rest

Pain scores based on a scale of 0 to 10 with 0 being no pain and 10 being the worst pain imaginable. (NCT01366196)
Timeframe: Postoperative Day 1 at rest

Interventionunits on a scale (Mean)
Control Group (C)3.7
Pregabalin Group (P)3.3

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Numerical Pain Rating Scale Score on Day of Surgery

Pain scores based on a scale of 0 to 10 with 0 being no pain and 10 being the worst pain imaginable. (NCT01366196)
Timeframe: Day of Surgery

Interventionunits on a scale (Mean)
Control Group (C)3.8
Pregabalin Group (P)2.9

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Change From Baseline at Week 14 in Medical Outcome Study (MOS)-Sleep Scale - Sleep Disturbance Subscale Score

The Medical Outcomes Study (MOS)-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. Range of scores represented for sleep disturbance was 0 to 100, with higher scores indicating more of the attribute. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-11.45
Placebo-8.02

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Change From Baseline at Week 14 in Medical Outcome Study (MOS)-Sleep Scale - Sleep Problems Index Overall Score

The Medical Outcomes Study (MOS)-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. Range of sleep problem index overall score was 0 to 100, with higher scores indicating more of the attribute. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-9.70
Placebo-6.64

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Change From Baseline at Week 14 in Short-Form 36 (SF-36) Health Survey - Mental Component Summary Score

The Short-Form 36 Health Survey (SF-36) was a self-administered questionnaire that measured each of the following 8 health concepts: Physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception. Mental component included mental health, role limitations due to emotional problems, vitality and general health perception. Score range for mental component summary score was 0 to 100 and higher scores reflected better participant status. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin2.68
Placebo2.30

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Change From Baseline at Week 14 in Short-Form 36 (SF-36) Health Survey - Physical Component Summary Score

The Short-Form 36 Health Survey (SF-36) was a self-administered questionnaire that measured each of the following 8 health concepts: Physical functioning, role limitations due to physical problems, social functioning, bodily pain, mental health, role limitations due to emotional problems, vitality, and general health perception. Physical component included physical functioning, role limitations due to physical problems, social functioning and bodily pain. Score range for physical component summary score was 0 to 100 and higher scores reflected better participant status. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin4.44
Placebo3.66

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Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Sleep Quality

The Subjective Sleep Questionnaire (SSQ) was included in the participant's diary and designed to capture subjective evaluation of sleep behavior in participants with disrupted sleep. It was administered to each participant approximately 30 - 60 minutes after arising each day in the morning. The Sleep Quality parameter subjectively rated the quality of sleep during the past night by selecting a number between 0 (very poor) and 10 (excellent). Baseline was defined as the mean of last 7 SSQ diary entries up to and including Day 1. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin1.59
Placebo0.82

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Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Subjective Latency to Sleep Onset (sLSO)

The Subjective Sleep Questionnaire (SSQ) was included in the participant's diary and designed to capture subjective evaluation of sleep behavior in participants with disrupted sleep. It was administered to each participant approximately 30 - 60 minutes after arising each day in the morning. The Subjective Latency to Sleep Onset (sLSO) parameter subjectively estimated the amount of time to fall asleep after lights out. Baseline was defined as the mean of last 7 SSQ diary entries up to and including Day 1. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionMinutes (Least Squares Mean)
Pregabalin-0.26
Placebo-0.28

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Change From Baseline in Pain Visual Analog Scale (Pain VAS) Score at Week 14

"The Pain Visual Analog Scale (Pain VAS) was a horizontal line; 100 mm in length, self administered by the participants in order to rate pain from 0 no pain to 100 worst possible pain." (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-17.04
Placebo-13.43

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Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Subjective Total Sleep Time (sTST)

The Subjective Sleep Questionnaire (SSQ) was included in the participant's diary and designed to capture subjective evaluation of sleep behavior in participants with disrupted sleep. It was administered to each participant approximately 30 - 60 minutes after arising each day in the morning. The Subjective Total Sleep Time (sTST) parameter subjectively estimated the total amount of time the participant was asleep after lights out until final awakening. Baseline was defined as the mean of last 7 SSQ diary entries up to and including Day 1. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionMinutes (Least Squares Mean)
Pregabalin24.63
Placebo17.23

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Percentage of Participants Categorized by Each Patient Global Impression of Change (PGIC) Score at Week 14

The Patient Global Impression of Change (PGIC) was a participant-rated instrument that measured change in participant's overall status on a scale ranging from 1 (very much improved) to 7 (very much worse), which was based on a validated scale, the Clinical Global Impression of Change (CGIC). Categories were defined based on the PGIC scores as followed: 1 = very much improved, 2 = much improved, 3 = minimally improved, 4 = no change, 5 = minimally worse, 6 = much worse and 7 = very much worse. (NCT01387607)
Timeframe: Week 14

,
InterventionPercentage of participants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Placebo7.719.742.324.63.52.10.0
Pregabalin9.925.440.117.64.92.10.0

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Change From Baseline in Multidimensional Assessment of Fatigue (MAF) Score at Week 14

The Multidimensional Assessment of Fatigue (MAF) scale was a self-administered survey that yielded a Global Fatigue Index by assessing the participant's level of fatigue and the degree to which fatigue interferes with activities of daily living. It contained 16 items and measured 4 dimensions of fatigue: severity (2 items), distress (1 item), degree of interference in activities of daily living (11 items), and timing (2 items). Index range was 1 to 50 and higher scores reflected greater impairment. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-4.09
Placebo-3.25

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Change From Baseline in Endpoint Mean Pain Score During the Double-blind Treatment Period at Week 14

Assessment of mean pain score was based on participant's daily pain diary. The daily pain diary consisted of an 11-point numeric rating scale ranging from 0 (no pain) to 10 (worst possible pain). The participants rated their pain during the past 24 hours by choosing the appropriate number between 0 and 10. Self-assessment was performed daily at awakening. The endpoint mean pain score was defined as the mean of the Week 14 pain diary entries in the double-blind treatment phase. Baseline was defined as the mean of last 7 pain diary entries up to and including Day 1. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-2.01
Placebo-1.28

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Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Subjective Wake After Sleep Onset (sWASO)

The Subjective Sleep Questionnaire (SSQ) was included in the participant's diary and designed to capture subjective evaluation of sleep behavior in participants with disrupted sleep. It was administered to each participant approximately 30 - 60 minutes after arising each day in the morning. The Subjective Wake after Sleep Onset (sWASO) parameter subjectively estimated the total amount of time the participant was awake after initial sleep onset until final awakening. Baseline was defined as the mean of last 7 SSQ diary entries up to and including Day 1. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionMinutes (Least Squares Mean)
Pregabalin-42.36
Placebo-25.19

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Change From Baseline at Week 14 in Subjective Sleep Questionnaire (SSQ) - Subjective Number of Awakenings After Sleep Onset (sNAASO)

The Subjective Sleep Questionnaire (SSQ) was included in the participant's diary and designed to capture subjective evaluation of sleep behavior in participants with disrupted sleep. It was administered to each participant approximately 30 - 60 minutes after arising each day in the morning. The Subjective Number of Awakenings after Sleep Onset (sNAASO) parameter subjectively estimated the total number of times the participant awakened during the night until final awakening. Baseline was defined as the mean of last 7 SSQ diary entries up to and including Day 1. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionAwakenings (Least Squares Mean)
Pregabalin-0.95
Placebo-0.30

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Change From Baseline in Mean Sleep Interference Score at Week 14

The Daily Sleep Interference Scale was an 11-point numerical scale ranging from 0 (does not interfere with sleep) to 10 (completely interferes [unable to sleep due to pain]). Participants were asked to describe how their pain had interfered with their sleep during the past 24 hours by choosing the appropriate number between 0 and 10. Self-assessment was performed daily upon awakening. Baseline Mean Sleep Interference score was defined as the mean of all available last 7 sleep interference score diary entries up to and including Day 1. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-1.88
Placebo-1.00

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Change From Baseline in Fibromyalgia Impact Questionnaire (FIQ) Total Score at Week 14

The Fibromyalgia Impact Questionnaire (FIQ) was a 20-item participant-reported outcome instrument designed to assess health status, progress, and outcomes in participants with fibromyalgia. It contained 10 subscales. There were 11 questions that are related specifically to physical functioning. The remaining items assessed pain, fatigue, stiffness, difficulty working, and symptoms of anxiousness and depression. Score range for each subscale was 0 to 10. The 10 subscales were combined to yield a total score with range from 0 to 100. The total score provided an estimation of fibromyalgia impact with higher scores indicating greater impairment. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-11.14
Placebo-8.15

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Number of Treatment-Emergent Adverse Events (TEAEs) Categorized by Severity

A mild Adverse Event (AE) was an AE that did not interfere with participant's usual function. A moderate AE was an AE that interfered participant's usual function to some extent. A severe AE was an AE that interfered significantly with participant's usual function. (NCT01387607)
Timeframe: Baseline to Follow up (Day 105)

,
InterventionEvents (Number)
Mild AEsModerate AEsSevere AEs
Placebo1623025
Pregabalin1835238

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Change From Baseline at Week 14 in Hospital Anxiety and Depression Scale (HADS) - Anxiety Subscale Score

The Hospital Anxiety and Depression Scale (HADS) was a self-reported 14-item instrument that consisted of two 7-item subscales that measure the presence and severity of anxiety and depression. For each subscale, score range was 0 to 21, with higher scores indicating greater impairment. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-1.03
Placebo-0.65

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Change From Baseline at Week 14 in Hospital Anxiety and Depression Scale (HADS) - Depression Subscale Score

The Hospital Anxiety and Depression Scale (HADS) was a self-reported 14-item instrument that consisted of two 7-item subscales that measure the presence and severity of anxiety and depression. For each subscale, range was 0 to 21, with higher scores indicating greater impairment. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin-1.11
Placebo-0.28

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Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs) and Discontinuation Due to AEs

An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a product or medical device. A Serious adverse event (SAE) was any untoward medical occurrence at any dose that resulted in death; was life-threatening (immediate risk of death); required inpatient hospitalization or prolongation of existing hospitalization; persistent or significant disability (substantial disruption of the ability to conduct normal life functions); congenital anomaly/birth defect. Treatment-emergent AEs (TEAEs) were events between first dose of study drug and up to follow-up visit (Study Day 105) that were absent before treatment or that worsened after treatment. AEs included both SAEs and non-SAEs. (NCT01387607)
Timeframe: Baseline to Follow up (Day 105)

,
InterventionParticipants (Number)
AEsSAEsDiscontinuation due to AEs
Placebo103911
Pregabalin119022

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Change From Baseline at Week 14 in Medical Outcome Study (MOS)-Sleep Scale - Snoring, Awaken Short of Breath and Sleep Adequacy Subscale Scores

The Medical Outcomes Study (MOS)-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. Range of scores represented for snoring, awaken short of breath and sleep adequacy was 0 to 100, with higher scores indicating more of the attribute. (NCT01387607)
Timeframe: Baseline, Week 14

,
InterventionUnits on a scale (Least Squares Mean)
SnoringAwaken Short of BreathSleep Adequacy
Placebo2.08-4.415.20
Pregabalin4.61-6.7614.23

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Change From Baseline at Week 14 in Medical Outcome Study (MOS)-Sleep Scale - Quantity of Sleep and Somnolence Subscale Scores

The Medical Outcomes Study (MOS)-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. Range of quantity of sleep parameter was 0 to 24 and somnolence was 0 to 100, with higher scores indicating more of the attribute. (NCT01387607)
Timeframe: Baseline, Week 14

,
InterventionUnits on a scale (Least Squares Mean)
Quantity of SleepSomnolence
Placebo0.32-5.48
Pregabalin0.61-1.29

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Percentage of Participants With Optimal Sleep at Week 14 in Medical Outcome Study (MOS)-Sleep Scale

The Medical Outcomes Study (MOS)-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionPercentage of participants (Number)
Pregabalin41.2
Placebo43.6

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Percentage of Participants With at Least 50% Reduction in Weekly Mean Pain Score From Baseline to Week 14

Assessment of mean pain score was based on participant's daily pain diary. The daily pain diary consisted of an 11-point numeric rating scale ranging from 0 (no pain) to 10 (worst possible pain). The participants rated their pain during the past 24 hours by choosing the appropriate number between 0 and 10. Self-assessment was performed daily at awakening. Weekly mean pain score was calculated as mean value of the observations within the window for each week during the double-blind treatment phase. A participant with at least 50% reduction in weekly mean pain score from baseline to Week 14 was defined as a 50% responder. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionPercentage of participants (Number)
Pregabalin27.2
Placebo17.0

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Percentage of Participants With at Least 30% Reduction in Weekly Mean Pain Score From Baseline to Week 14

Assessment of mean pain score was based on participant's daily pain diary. The daily pain diary consisted of an 11-point numeric rating scale ranging from 0 (no pain) to 10 (worst possible pain). The participants rated their pain during the past 24 hours by choosing the appropriate number between 0 and 10. Self-assessment was performed daily at awakening. Weekly mean pain score was calculated as mean value of the observations within the window for each week during the double-blind treatment phase. A participant with at least 30% reduction in weekly mean pain score from baseline to Week 14 was defined as a 30% responder. (NCT01387607)
Timeframe: Baseline, Week 14

InterventionPercentage of participants (Number)
Pregabalin47.5
Placebo32.7

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Child Behaviour Checklist (CBCL): Total Problem Subscale Score in Participants Less Than 6 Years of Age

CBCL assessed suicidal behavior in children below 6 years. It is 100-item questionnaire completed by parent/legal guardian, based on participant's behavior in past 2 months. All 100 items rated on 3-point scale: 0=not true for that child; 1=sometimes true; 2=very/often true. Total CBCL score ranges from 0 (not true) to 200 (very/often true). Higher scores=higher levels of problematic behaviors or dysfunction. Scores from all items were used to calculate 3 subscale scores: Withdrawn subscale scores, Internalizing problems subscale scores and total problem subscale scores. All subscale scores reported scaled to T Scores. Higher scores for each CBCL subscales indicated higher levels of problematic behaviors or dysfunction. In this study, a cut-off of >=68 on the T-scores was used for all 3 subscales. If a participant T Score was >=68 in any of the sub-scales, the participant was referred for Mental Health Risk Assessment that included assessment of participant continuation to the study (NCT01389596)
Timeframe: Week -8 (8 weeks prior to Day 1 of treatment), Week -4 (4 weeks prior to Day 1 of treatment), Day 1 (Week 0), Week 1, 2, 3, 6, 9, 12, end of study visit (Week 13)

,,
InterventionT scores (Mean)
Week -8 (n= 12, 14, 14)Week -4 (n= 12, 14, 14)Week 0 (n= 12, 14, 14)Week 1 (n= 12, 13, 14)Week 2 (n= 11, 13, 13)Week 3 (n= 12, 14, 13)Week 6 (n= 11, 13, 11)Week 9 (n= 11, 13, 11)Week 12 (n= 11, 14, 13)Week 13 (n= 12, 14, 11)
Placebo54.152.550.150.148.949.550.751.250.251.6
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day50.747.045.243.842.142.438.738.439.037.9
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day48.047.846.946.046.546.446.747.644.345.5

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Child Behaviour Checklist (CBCL): Internalizing Subscale Score in Participants Less Than 6 Years of Age

CBCL assessed suicidal behavior in children below 6 years. It is 100-item questionnaire completed by parent/legal guardian, based on participant's behavior in past 2 months. All 100 items rated on 3-point scale: 0=not true for that child; 1=sometimes true; 2=very/often true. Total CBCL score ranges from 0 (not true) to 200 (very/often true). Higher scores=higher levels of problematic behaviors or dysfunction. Scores from all items were used to calculate 3 subscale scores: Withdrawn subscale scores, Internalizing problems subscale scores and total problem subscale scores. All subscale scores reported scaled to T Scores. Higher scores for each CBCL subscales indicated higher levels of problematic behaviors or dysfunction. In this study, a cut-off of >=68 on the T-scores was used for all 3 subscales. If a participant T Score was >=68 in any of the sub-scales, the participant was referred for Mental Health Risk Assessment that included assessment of participant continuation to the study. (NCT01389596)
Timeframe: Week -8 (8 weeks prior to Day 1 of treatment), Week -4 (4 weeks prior to Day 1 of treatment), Day 1 (Week 0), Week 1, 2, 3, 6, 9, 12, end of study visit (Week 13)

,,
InterventionT scores (Mean)
Week -8 (n= 12, 14, 14)Week -4 (n= 12, 14, 14)Week 0 (n= 12, 14, 14)Week 1 (n= 12, 13, 14)Week 2 (n= 11, 13, 13)Week 3 (n= 12, 14, 13)Week 6 (n= 11, 13, 11)Week 9 (n= 11, 13, 11)Week 12 (n= 11, 14, 13)Week 13 (n= 12, 14, 11)
Placebo54.952.650.650.748.349.647.551.050.550.8
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day55.150.949.148.745.644.242.140.640.839.9
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day48.348.146.446.346.545.645.546.042.144.3

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Change From Baseline in Cognitive Test Battery (CogState Battery) Scores at Week 12: Detection Task

CogState battery:computerized test battery used to assess cognitive domains through cognition tests/tasks. The test battery was presented on computer with external response buttons. In this study, Cogstate battery consisted of 2 tasks which measured psychomotor function (detection task) and attention (paediatric identification task). Detection task was a measure of simple reaction time and provided a valid assessment of psychomotor function in participants. In this task, a playing card turning face up was presented in the center of the computer screen. As soon as this happened, the participant was to press the 'Yes' response key. There was no minimum or maximum scores since it was a time-based assessment. The software measured the speed of accurate responses to each event. In this outcome measure, speed of performance of participants (calculated as mean of the logarithmic base 10 transformed reaction times) for correct responses was reported. Lower scores indicated better performance. (NCT01389596)
Timeframe: Baseline (pre-dose at Day 1), Week 12

,,
Interventionlog10 milliseconds (Mean)
Baseline (n= 68, 56, 60)Change At Week 12 (n= 61, 45, 53)
Placebo2.700.01
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day2.72-0.03
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day2.71-0.00

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Change From Baseline in Cognitive Test Battery (CogState Battery) Score at Week 12: Paediatric Identification (Go-No Go: Attention) Tasks

"CogState battery: computerized test battery used to assess cognitive domains through cognition tests/tasks. The test battery was presented on computer with external response buttons. Paediatric identification task: a measure of choice reaction time and valid assessment of visual attention. In this task, a playing card turning face up was presented in center of the computer screen. As soon as this happened, participant had to decide whether color of card was black or not. If color was black, participants was to press Yes response key, otherwise no. There was no minimum/maximum scores since it was a time-based assessment. The software measured speed of accurate responses (correct identification of color) to each event. In this outcome measure, speed of performance of participants to correctly identify the color (calculated as mean of the logarithmic base 10 transformed reaction times) for correct responses was reported. Lower scores indicated better performance." (NCT01389596)
Timeframe: Baseline (pre-dose at Day 1), Week 12

,,
Interventionlog10 milliseconds (Mean)
Baseline (n= 67, 56, 59)Change At Week 12 (n= 60, 44, 51)
Placebo2.800.00
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day2.800.00
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day2.810.00

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Percentage of Participants With at Least 50 Percent (%) or Greater Reduction From Baseline in 28-day Seizure Rate During the 12 Week Treatment Phase

Percentage of participants with 50 percent (%) or greater reduction from baseline in 28-day seizure rate during the 12 week treatment phase were reported. 28-day seizure rate for all partial onset seizures = ([number of seizures in the treatment phase] divided by [number of days in treatment phase minus {-} number of missing diary days in treatment phase])*28. (NCT01389596)
Timeframe: Day 1 up to Week 12

Interventionpercentage of participants (Number)
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day29.1
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day40.6
Placebo22.6

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Number of Participants With Clinically Significant Laboratory Abnormalities

Criteria for abnormality: hematology (hemoglobin, hematocrit, red blood cells count:<]0.8*lower limit of normal [LLN],platelets:<0.5*LLN/greater than [>]1.75*upper limit of normal [ULN],leukocytes:<0.6*LLN or>1.5*ULN, lymphocytes, total neutrophils:<0.8*LLN or >1.2*ULN, basophils, eosinophil, monocytes:>1.2*ULN); Liver Function(aspartate aminotransferase ,alanine aminotransferase, alkaline phosphatase, Gamma glutamyl transferase:>0.3*ULN, total protein, albumin:<0.8*LLN or >1.2*ULN); bilirubin:>1.5*ULN; renal function(blood urea nitrogen, creatinine:>1.3*ULN); Electrolytes(sodium:<0.95*LLN or>1.05*ULN, potassium, chloride, calcium, bicarbonate:<0.9*LLN or >1.1*ULN); Lipids(cholesterol, triglycerides >1.3*ULN); creatine kinase:>2.0*ULN; glucose fasting:<0.6*LLN or >1.5*ULN, urine white blood corpuscles and RBC:>= 20/High Power Field [HPF];urine casts: >1/Low Power Field(LPF);urine bacteria:>20/HPF. Hormones (tetraiodothyronine and thyroid stimulating hormone:<0.8*LLN or >1.2*ULN). (NCT01389596)
Timeframe: Baseline (from 8 weeks prior to Day 1 of treatment) up to Week 13

Interventionparticipants (Number)
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day61
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day63
Placebo61

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Number of Participants With Clinically Significant Change From Baseline in Neurological Examinations

Neurological examinations included: level of consciousness, mental status, cranial nerve assessment, muscle strength and tone, reflexes, pin prick and vibratory sensation (the latter using a 128-Hertz tuning fork), coordination and gait. Clinical significance was based on investigator's discretion. (NCT01389596)
Timeframe: Baseline (from 8 weeks prior to Day 1 of treatment) up to Week 13

Interventionparticipants (Number)
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day0
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day1
Placebo0

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Log-Transformed 28-Day Seizure Rate For All Partial Onset Seizures During 12-Week Treatment Phase

"All partial onset seizures experienced during treatment phase were recorded by the participants or their parents/legal guardian in a daily seizure diary. 28-day seizure rate for all partial onset seizures = ([number of seizures in the treatment phase] divided by [number of days in treatment phase minus {-} number of missing diary days in treatment phase])*28. For log-transformation, the quantity 1 was added to the 28-day seizure rate for all participants to account for any possible 0 seizure incidence. This resulted in final calculation as: log transformed (28-day seizure rate +1)." (NCT01389596)
Timeframe: Day 1 up to Week 12

InterventionSeizures per 28 days (Least Squares Mean)
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day2.86
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day2.74
Placebo2.96

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Log-Transformed 28-Day Seizure Rate For All Partial Onset Seizures During Baseline Phase

"All partial onset seizures experienced during baseline phase were recorded by the participants or their parents/legal guardian, in a daily seizure diary. 28-day seizure rate for all partial onset seizures = ([number of seizures in the baseline phase] divided by [number of days in baseline phase minus {-} number of missing diary days in baseline phase])*28. For log-transformation, the quantity 1 was added to the 28-day seizure rate for all participants to account for any possible 0 seizure incidence. This resulted in final calculation as: log transformed (28-day seizure rate +1)." (NCT01389596)
Timeframe: Baseline phase (up to 8 weeks prior to treatment phase [Day 1])

InterventionSeizures per 28 days (Mean)
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day3.27
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day3.19
Placebo3.18

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Number of Participants With Vital Signs Abnormalities

Criteria for abnormalities in vital signs included: sitting systolic blood pressure (SBP) values: maximum increase and decrease of >=30 millimeter of mercury (mmHg) from baseline; sitting diastolic blood pressure (DBP) value: maximum increase and decrease of >=20 mmHg from baseline. (NCT01389596)
Timeframe: Baseline (from 8 weeks prior to Day 1 of treatment) up to Week 13

,,
Interventionparticipants (Number)
Maximum Increase from Baseline in Sitting SBPMaximum Increase from Baseline in Sitting DBPMaximum Decrease from Baseline in Sitting SBPMaximum Decrease from Baseline in Sitting DBP
Placebo111110
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day1816
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day26515

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Number of Participants With Clinically Significant Change From Baseline in Physical Examinations at Week 13

Physical examinations evaluated the following body systems/organs: general appearance; dermatological; head and eyes; ears, nose, mouth, and throat; pulmonary; cardiovascular; abdominal; genitourinary (optional); lymphatic; musculoskeletal/extremities; and neurological. Clinical significance was determined by the investigator. (NCT01389596)
Timeframe: Baseline (from 8 weeks prior to Day 1 of treatment) up to Week 13

Interventionparticipants (Number)
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day5
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day5
Placebo2

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Number of Participants With Electrocardiogram (ECG) Abnormalities

Criteria for abnormalities in ECG findings: 1) Time from ECG Q wave to the end of the S wave corresponding to ventricle depolarization (QRS complex): >=140 milliseconds (msec); 2) The interval between the start of the P wave and the start of the QRS complex, corresponding to the time between the onset of the atrial depolarization and onset of ventricular depolarization (PR interval): >=200 msec; 3) Time from ECG Q wave to the end of the T wave corresponding to electrical systole corrected for heart rate using Fridericia's formula (QTCF interval): absolute value 450 to <480 msec, 480 to <500 msec, >=500 msec; 4) Maximum QT interval: >=500 msec; 5) Maximum QTCB interval (Bazett's correction): 450 to< 480 msec, 480 to <500 msec, >=500 msec. Only those categories of ECG abnormalities in which participants were found abnormal, were reported in this outcome measure. (NCT01389596)
Timeframe: Baseline (from 8 weeks prior to Day 1 of treatment) up to Week 13

,,
Interventionparticipants (Number)
Maximum PR IntervalMaximum QTCB Interval (Bazett's Correction)
Placebo12
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day00
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day12

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Number of Participants (6-16 Years of Age) With Positive Response to Columbia Suicide-Severity Rating Scale (C-SSRS) According to the Columbia Classification Algorithm of Suicide Assessment (C-CASA) Categories During Post Baseline Time Period

"C-SSRS (mapped to C-CASA):participant-rated questionnaire to assess suicidal ideation and suicidal behavior. For suicidal ideation and behaviour, data from C-SSRS was mapped to C-CASA codes 1, 2, 3, 4 and 7. C-SSRS assessed whether participant experienced the following: completed suicide (C-CASA code 1); suicide attempt (response of Yes on actual attempt) (C-CASA code 2); preparatory acts toward imminent suicidal behavior (ISB) (Yes on preparatory acts or behavior)(C-CASA code 3); suicidal ideation (Yes on wish to be dead, non-specific active suicidal thoughts, active suicidal ideation with methods without intent to act or some intent to act, without specific plan or with specific plan and intent) (C-CASA code 4); any self-injurious behavior with no suicidal intent (C-CASA code 7). Number of participants with positive response (response of yes) to C-SSRS (mapped to C-CASA categories 1, 2, 3, 4 and 7) during post baseline time period (Day 1 up to Week 13) were reported" (NCT01389596)
Timeframe: Day 1 up to Week 13

,,
Interventionparticipants (Number)
Completed suicide (C-CASA code 1)Suicide attempt (C-CASA code 2)Preparatory acts towards ISB (C-CASA code 3)Suicidal ideation (C-CASA code 4)Self injurious behavior (C-CASA code 7)
Placebo00012
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day00002
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day00011

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Number of Participants (6-16 Years of Age) With Positive Response to Columbia Suicide-Severity Rating Scale (C-SSRS) According to the Columbia Classification Algorithm of Suicide Assessment (C-CASA) Categories At Baseline

"The C-SSRS (mapped to C-CASA) is a participant-rated questionnaire to assess suicidal ideation and suicidal behavior. For suicidal ideation and behaviour, data from C-SSRS was mapped to C-CASA codes 1, 2, 3, 4 and 7. C-SSRS assessed whether participant experienced the following: completed suicide (C-CASA code 1); suicide attempt (response of Yes on actual attempt) (C-CASA code 2); preparatory acts toward imminent suicidal behavior (ISB) (Yes on preparatory acts or behavior)(C-CASA code 3); suicidal ideation (Yes on wish to be dead, non-specific active suicidal thoughts, active suicidal ideation with methods without intent to act or some intent to act, without specific plan or with specific plan and intent) (C-CASA code 4); any self-injurious behavior with no suicidal intent (C-CASA code 7). In this outcome, number of participants with positive response (response of yes) to C-SSRS (mapped to C-CASA categories 2, 3, 4 and 7) at baseline were reported." (NCT01389596)
Timeframe: Baseline (4 week prior to Day 1 of treatment)

,,
Interventionparticipants (Number)
Suicide attempt (C-CASA code 2)Preparatory acts towards ISB (C-CASA code 3)Suicidal ideation (C-CASA code 4)Self injurious behavior (C-CASA code 7)
Placebo0001
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day0001
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day0001

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Number of Adverse Events by Severity

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. AEs were classified according to the severity in 3 categories a) mild: AEs does not interfere with participant's usual function b) moderate: AEs interferes to some extent with participant's usual function c) severe: AEs interferes significantly with participant's usual function. (NCT01389596)
Timeframe: Day 1 up to 7 days after last dose of study drug (up to 13 weeks)

,,
Interventionevents (Number)
MildModerateSevere
Placebo126215
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day162313
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day144337

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Child Behaviour Checklist (CBCL): Withdrawn Subscale Score in Participants Less Than 6 Years of Age

CBCL assessed suicidal behavior in children below 6 years. It is 100-item questionnaire completed by parent/legal guardian, based on participant's behavior in past 2 months. All 100 items rated on 3-point scale: 0=not true for that child; 1=sometimes true; 2=very/often true. Total CBCL score ranges from 0 (not true) to 200 (very/often true). Higher scores=higher levels of problematic behaviors or dysfunction. Scores from all items were used to calculate 3 subscale scores: Withdrawn subscale scores, Internalizing problems subscale scores and total problem subscale scores. All subscale scores reported scaled to T Scores. Higher scores for each CBCL subscales indicated higher levels of problematic behaviors or dysfunction. In this study, a cut-off of >=68 on the T-scores was used for all 3 subscales. If a participant T Score was >=68 in any of the sub-scales, the participant was referred for Mental Health Risk Assessment that included assessment of participant continuation to the study (NCT01389596)
Timeframe: Week -8 (8 weeks prior to Day 1 of treatment), Week -4 (4 weeks prior to Day 1 of treatment), Day 1 (Week 0), Week 1, 2, 3, 6, 9, 12, end of study visit (Week 13)

,,
InterventionT scores (Mean)
Week -8 (n= 12, 14, 14)Week -4 (n= 12, 14, 14)Week 0 (n= 12, 14, 14)Week 1 (n= 12, 13, 14)Week 2 (n= 11, 13, 13)Week 3 (n= 12, 14, 13)Week 6 (n= 11, 13, 11)Week 9 (n= 11, 13, 11)Week 12 (n= 11, 14, 13)Week 13 (n= 12, 14, 11)
Placebo63.161.960.959.559.260.854.560.059.657.9
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day64.061.360.660.960.258.656.657.157.356.1
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day56.455.456.656.856.354.855.556.154.055.1

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Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent were events between first dose of study drug and up to 7 days after last dose of study drug (up to 13 weeks) that were absent before treatment or that worsened relative to pre- treatment state. AEs included both serious and non-serious adverse events. (NCT01389596)
Timeframe: Day 1 up to 7 days after last dose of study drug (up to 13 weeks)

,,
Interventionparticipants (Number)
AEsSAEs
Placebo567
Pregabalin: 10 mg/kg/Day or 14 mg/kg/Day6810
Pregabalin: 2.5 mg/kg/Day or 3.5 mg/kg/Day675

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Pain Scores

Visual Analog Pain Scores (VAS); 0 (no pain) to 10 (worst possible pain) (NCT01391858)
Timeframe: Participants' pain score was assessed at hospital discharge, an average of 3 days after mastectomy

Interventionunits on a scale (Median)
Pregabalin4
Placebo4

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Pain Scores

Visual Analog Pain Scores (VAS); 0 (no pain) to 10 (worst possible pain) (NCT01391858)
Timeframe: Participants' pain score was assessed after discharge on the 14th day after mastectomy

Interventionunits on a scale (Median)
Pregabalin3
Placebo2

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Pain Scores

Visual Analog Pain Scores (VAS); 0 (no pain) to 10 (worst possible pain) (NCT01391858)
Timeframe: Participants' pain score was assessed on the first postoperative day after mastectomy

Interventionunits on a scale (Median)
Pregabalin4
Placebo4

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The Postoperative Opioid Requirement After Mastectomy

IV Patient Controlled Analgesia (PCA) morphine for rescue pain management in the immediate postoperative period for an average of 24 hrs after mastectomy (NCT01391858)
Timeframe: Participants received PCA pump, an average of 24 hrs after mastectomy

Interventionmilligram (mg) (Median)
Pregabalin9
Placebo7.5

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Pain Scores

Visual Analog Pain Scores (VAS); 0 (no pain) to 10 (worst possible pain) (NCT01391858)
Timeframe: Participants' pain score was assessed after discharge on the 30th day after mastectomy

Interventionunits on a scale (Median)
Pregabalin2
Placebo2

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Pain Scores

Visual Analog Pain Scores (VAS); 0 (no pain) to 10 (worst possible pain) (NCT01391858)
Timeframe: Participants' pain score was assessed after discharge on the 7th day after mastectomy

Interventionunits on a scale (Median)
Pregabalin3
Placebo3

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Oral Opioids Consumption

Oral opioids consumption after mastectomy until hospital discharge. (NCT01391858)
Timeframe: Participants were followed for the consumption of oral opioid for the duration of hospital stay, an average of 3 days after mastectomy

Interventionmilligram (mg) (Median)
Pregabalin5
Placebo10

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Pain Scores

Visual Analog Pain Scores (VAS); 0 (no pain) to 10 (worst possible pain) (NCT01391858)
Timeframe: Participants' pain score was assessed after discharge on the 90th day after mastectomy

Interventionunits on a scale (Median)
Pregabalin1
Placebo1

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Patient Global Impression of Change (PGIC) at the End of Period 1.

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). (NCT01432236)
Timeframe: End of Period 1 at Week 6

,
InterventionPercentage of participants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Placebo4.325.840.921.56.51.10
Pregabalin10.835.528.017.24.33.21.1

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Percentage of Participants With >=30% and >=50% Pain Reduction Based on Daily Pain Diary.

Participant with at least a 30% reduction in mean pain score from baseline (at randomization) to the endpoint at the end of each period (Visits 6 and 12) is considered a 30% responder, for the respective period. Similarly, a subject with at least a 50% reduction in mean pain score from baseline (at randomization) to the endpoint at the end of each period (Visits 6 and 12) is considered a 50% responder, for the respective period. (NCT01432236)
Timeframe: Visits 2, 6, and 12

,
InterventionPercentage of participants (Number)
30% Responders50% Responders
Placebo27.715.8
Pregabalin45.326.0

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PGIC at the End of Period 2.

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Because of the crossover design and PGIC recall period (since starting study medication), the Period 1 PGIC data were felt to provide the clearest comparison across treatments, whereas Period 2 PGIC data were felt to have a more complex interpretation. Thus PGIC at End of Period 2 was separately analyzed from PGIC at End of Period 1. (NCT01432236)
Timeframe: End of Period 2 at Week 14

,
InterventionPercentage of Participants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Placebo8.625.938.314.88.62.51.2
Pregabalin18.334.128.011.06.11.21.2

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Work Productivity and Activity Index-Specific Health Problem (WPAI-SHP) Questionnaire at Baseline.

WPAI-SHP assessed work productivity and impairment. It was a participant-rated, six-item questionnaire regarding current employment, hours missed and actually worked, and degree to which a specified health problem affected work productivity and regular activities over the past 7 days. Subscale scores included percent work time missed due to the health problem; percent impairment while working due to problem; percent overall work impairment due to problem; and percent activity impairment due to problem. Each subscale score was expressed as an impairment percentage (0-100) where higher numbers indicated greater impairment and less productivity. (NCT01432236)
Timeframe: Baseline

InterventionUnits on a scale (Mean)
Percent Absenteeism (N= 86)Percent Presenteeism (N= 83)Percent Overall Work Impairment (N= 82)Percent Activity Impairment (N=193)
All Participants15.2253.9857.9664.97

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Number of Participants With Categorical Scores on the Columbia Suicide Severity Rating Scale (C-SSRS) at Baseline.

"C-SSRS assessed whether participant experienced following: completed suicide (1), suicide attempt (2) (response of Yes on actual attempt), preparatory acts toward imminent suicidal behavior (3) (Yes on preparatory acts or behavior), suicidal ideation (4) (Yes on wish to be dead, non-specific active suicidal thoughts, active suicidal ideation with methods without intent to act or some intent to act, without specific plan or with specific plan and intent), any suicidal behavior or ideation, self-injurious behavior (7) (Yes on Has participant engaged in non-suicidal self-injurious behavior)." (NCT01432236)
Timeframe: Baseline

,
InterventionParticipants (Number)
Wish to be DeadNon-Specific ThoughtsWithout Intent to ActSome Intent to ActSpecific Plan and IntentActual AttemptNon-Suicidal Self-Injurious BehaviorInterrupted AttemptAborted AttemptPreparatory Acts or BehaviorSuicidal Behavior PresentCompleted Suicide
Placebo/Pregabalin110000000000
Pregabalin/Placebo300000000000

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EQ-5D Score at End of Period.

EQ-5D is a standardized, participant-administered measure of health outcome. It provides a descriptive profile for 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression), using 3 levels (no, moderate, or extreme problems) and a single index value characterizing current health status using a 100-point visual analog scale (0=worst, 100=best). EQ-5D summary index is obtained with a formula that weights each level of the dimensions. The index-based score is interpreted along a continuum of 0 (death) to 1 (perfect health). (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin0.58
Placebo0.56

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Health Utilization Assessment (Time for Help no Payment) at Baseline.

The healthcare utilization assessment was used to capture healthcare utilization data at Baseline. This assessment contained 10 questions related to aspects of healthcare services. 'Time for help no payment' refers to time other people spent without receiving payment to help with activities the patient cannot perform due to fibromyalgia. (NCT01432236)
Timeframe: Baseline

InterventionHours (Mean)
All Participants50.37

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Mean EuroQoL 5-Dimensions (EQ-5D) Score at Baseline.

EQ-5D is a standardized, participant-administered measure of health outcome. It provides a descriptive profile for 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression), using 3 levels (no, moderate, or extreme problems) and a single index value characterizing current health status using a 100-point visual analog scale (0=worst, 100=best). EQ-5D summary index is obtained with a formula that weights each level of the dimensions. The index-based score is interpreted along a continuum of 0 (death) to 1 (perfect health). (NCT01432236)
Timeframe: Baseline

InterventionUnits on a scale (Mean)
Pregabalin/Placebo0.40
Placebo/Pregabalin0.37

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Mean NRS Pain Score at End of Period.

"The daily pain diary consists of an 11-point numeric scale (NRS) ranging from 0 (no pain) to 10 (worst possible pain). Participants describe their pain during the past 24 hours by choosing the appropriate number between 0 and 10. The endpoint mean pain scores for Period 1 and Period 2 are defined as the mean of the last 7 non-missing daily diary pain ratings while taking study medication in the double-blind phase during Period 1 and Period 2, respectively." (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin4.84
Placebo5.45

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Mean Patient Static Global Assessment (PSGA) Score at Baseline.

PSGA was a single-item self-rated instrument that measured the participant's overall status on an 11-point NRS ranging from 0 (very poor) to 10 (very good). (NCT01432236)
Timeframe: Baseline

InterventionUnits on a scale (Mean)
Pregabalin/Placebo4.35
Placebo/Pregabalin4.46

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Mean PSGA Score at End of Period.

PSGA was a single-item self-rated instrument that measured the participant's overall status on an 11-point numeric rating scale (NRS) ranging from 0 (very poor) to 10 (very good). (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin5.83
Placebo5.27

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Subjective Sleep Questionnaire - Mean Latency to Sleep Onset at End of Period.

Subjective Sleep Questionnaire included, participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (numeric rating scale) for the previous night. Subjective latency to sleep onset was the subjective estimate of the amount of time to fall asleep after lights out. (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

InterventionMinutes (Least Squares Mean)
Pregabalin33.54
Placebo39.33

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Subjective Sleep Questionnaire - Mean Sleep Quality at End of Period.

Subjective Sleep Questionnaire included 5 items: participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (NRS) for the previous night. Subjective rating of quality of sleep during the past night was done by selecting a number between 0 (very poor) and 10 (excellent). Mean sleep quality was calculated as the mean of the last seven days, the potential range of responses was therefore 0-10. (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

InterventionUnits on a scale (Least Squares Mean)
Pregabalin6.15
Placebo5.57

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Subjective Sleep Questionnaire - Mean Subjective Total Sleep Time at End of Period.

Subjective Sleep Questionnaire included, participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (numeric rating scale) for the previous night. Subjective total sleep time was the subjective estimate of the total amount of time the participant was asleep after lights out until final awakening. (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

InterventionMinutes (Least Squares Mean)
Pregabalin422.98
Placebo414.63

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Subjective Sleep Questionnaire - Mean Subjective Wake After Sleep Onset at End of Period.

Subjective Sleep Questionnaire included, participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (numeric rating scale) for the previous night. Subjective wake after sleep onset was the subjective estimate of the total amount of time the participant was awake after initial sleep onset until final awakening. (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

InterventionMinutes (Least Squares Mean)
Pregabalin33.38
Placebo41.18

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Subjective Sleep Questionnaire - Parameter Estimates for Subjective Number of Awakenings Per Night After Sleep Onset at End of Period.

Subjective Sleep Questionnaire included, participants report latency (how long it took them to fall asleep), how many hours they slept, the number of times they woke up, the total wake time after sleep onset, and then rate the quality of their sleep (numeric rating scale) for the previous night. Subjective number of awakenings after sleep onset was the subjective estimate of the total number of times the participant awakened during the night until final awakening. (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

InterventionNumber of times awakened (Least Squares Mean)
Pregabalin0.48
Placebo0.61

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Fibromyalgia Impact Questionnaire (FIQ) Score at Baseline.

This was a 20-item participant reported outcome instrument. It contained 10 subscales, which were combined to yield a total score. The first 11 questions were related specifically to physical functioning subscale, ranging from 0 to 10. The remaining 9 questions assessed pain, fatigue, stiffness, difficulty working, and symptoms of anxiety and depression ranging from 0 to 10. The higher values indicated greater impairment. All 20 were combined to form a total score ranging from 0 to 100, provides an estimation of fibromyalgia impact with higher scores indicating more impairment. The severity categorizations for the FIQ are: less than 40 (mild), 40-60 (moderate), and above 60 (severe). (NCT01432236)
Timeframe: Baseline

,
InterventionUnits on a scale (Mean)
Total (N=96, 96)Physical Impairment (N=96, 97)Feel Good (N=96, 97)Work Missed (N=96, 97)Do Work (N=96, 97)Pain (N=96, 96)Fatigue (N=96, 97)Rested (N=96, 97)Stiffness (N=96, 97)Anxiety (N=96, 97)Depression (N=96, 97)
Placebo/Pregabalin62.754.447.433.496.387.098.087.827.645.604.84
Pregabalin/Placebo63.834.587.783.386.616.988.177.907.565.655.23

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FIQ Score at End of Period.

This was a 20-item participant reported outcome instrument. It contained 10 subscales, which were combined to yield a total score. The first 11 questions were related specifically to physical functioning subscale, ranging from 0 to 10. The remaining 9 questions assessed pain, fatigue, stiffness, difficulty working, and symptoms of anxiety and depression ranging from 0 to 10. The higher values indicated greater impairment. All 20 were combined to form a total score ranging from 0 to 100, provides an estimation of fibromyalgia impact with higher scores indicating more impairment. The severity categorizations for the FIQ are: less than 40 (mild), 40-60 (moderate), and above 60 (severe). (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

,
InterventionUnits on a scale (Least Squares Mean)
Total (N=176, 172)Physical impairment (N=176, 173)Feel good (N=176, 173)Work missed (N=176 , 173)Do work (N=176, 172)Pain (N=176, 173)Fatigue (N=176, 173)Rested (N=176, 173)Stiffness (N=176, 173)Anxiety (N=176, 173)Depression (N=176, 173)
Placebo50.383.775.532.625.315.546.766.415.954.354.13
Pregabalin43.783.354.692.024.564.916.325.645.243.803.20

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HADS at End of Period.

HADS: participant rated questionnaire with 2 subscales. HADS-A (anxiety) assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D (depression) assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT01432236)
Timeframe: End of each period, at Weeks 6 and 14

,
InterventionUnits on a scale (Least Squares Mean)
HADS-A (anxiety)HADS-D (depression)
Placebo6.967.05
Pregabalin6.016.17

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Health Utilization Assessment (Total Office Visits, Number of Hospitalizations and Number of Emergency Room Visits) at Baseline.

The healthcare utilization assessment was used to capture healthcare utilization data at Baseline. This assessment contained 10 questions related to aspects of healthcare services. (NCT01432236)
Timeframe: Baseline

InterventionVisits (Mean)
Total office visits (N= 193)Number of hospitalizations (N= 0)Number of emergency room visits (N= 12)
All Participants5.01NA1.83

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Hospital Anxiety and Depression Scale (HADS) at Baseline.

HADS: participant rated questionnaire with 2 subscales. HADS-A (anxiety) assesses state of generalized anxiety (anxious mood, restlessness, anxious thoughts, panic attacks); HADS-D (depression) assesses state of lost interest and diminished pleasure response (lowering of hedonic tone). Each subscale comprised of 7 items with range 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Total score 0 to 21 for each subscale; higher score indicates greater severity of anxiety and depression symptoms. (NCT01432236)
Timeframe: Baseline

,
InterventionUnits on a scale (Mean)
HADS-A (anxiety)HADS-D (depression)
Placebo/Pregabalin7.977.73
Pregabalin/Placebo8.678.34

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Number of Participants With Categorical Scores on the C-SSRS at Post-Baseline.

"C-SSRS assessed whether participant experienced following:completed suicide (1), suicide attempt (2) (response of Yes on actual attempt), preparatory acts toward imminent suicidal behavior (3) (Yes on preparatory acts or behavior), suicidal ideation (4) (Yes on wish to be dead, non-specific active suicidal thoughts, active suicidal ideation with methods without intent to act or some intent to act, without specific plan or with specific plan and intent), any suicidal behavior or ideation, self-injurious behavior (7) (Yes on Has subject engaged in non-suicidal self-injurious behavior). Below table indicated one participant (10141023) treated with Pregabalin reported preparatory act. However upon study unblinding it was clarified that preparatory act occurred while the participant was taking placebo. Since preparatory act was reported at first visit of Period 2, by convention statistical summaries classified this under Pregabalin treatment." (NCT01432236)
Timeframe: From Visit 3 to Visit 14

,
InterventionParticipants (Number)
Wish to be DeadNon-Specific ThoughtsWithout Intent to ActSome Intent to ActSpecific Plan and IntentActual AttemptNon-Suicidal Self-Injurious BehaviorInterrupted AttemptAborted AttemptPreparatory Acts or BehaviorSuicidal Behavior PresentCompleted Suicide
Placebo810000000000
Pregabalin1032000000110

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EQ-5D Usual Activities Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

EQ-5D is a participant-completed 5-item questionnaire designed to assess health related quality of life in terms of a single index value or utility score. There are 5 dimensions: mobility, self-care, usual activities, pain / discomfort, and anxiety / depression. Each dimension is rated on a 3-point response scale [1 = no problems, 2 = some/moderate problems, 3 = extreme problems] and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin1.53
Placebo1.51

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Euro QoL-5 Dimensions (EQ-5D) Mobility Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

EQ-5D is a participant-completed 5-item questionnaire designed to assess health related quality of life in terms of a single index value or utility score. There are 5 dimensions: mobility, self-care, usual activities, pain / discomfort, and anxiety / depression. Each dimension is rated on a 3-point response scale (no problems, some/moderate problems, extreme problems) and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin1.65
Placebo1.65

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HADS-D Total Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

HADS is a 14- item self-administered questionnaire that consists of 2 scales, one measuring anxiety (HADS-A), and the other measuring depression (HADS-D). Each subscale consists of 7 statements and the participant responds as to how each item applies to him/her over the past week on 4- point response scale. Separate scores are calculated for anxiety and depression and a score (ranging from 0 to 21) is obtained for each subscale. The higher the score, the more severe the anxiety or depression. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin4.42
Placebo4.50

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Hospital Anxiety and Depression Scale - Anxiety (HADS-A) Total Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

The Hospital Anxiety and Depression Scale (HADS) is a 14- item self-administered questionnaire that consists of 2 scales, one measuring anxiety (HADS-A), and the other measuring depression (HADS-D). Each subscale consists of 7 statements and the participant responds as to how each item applies to him/her over the past week on 4- point response scale. Separate scores are calculated for anxiety and depression and a score (ranging from 0 to 21) is obtained for each subscale. The higher the score, the more severe the anxiety or depression. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin4.90
Placebo4.96

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Norfolk QOL-DN Activities of Daily Living Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess the impact of diabetic neuropathy on quality of life of participants with diabetic neuropathy. The items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). Activities of the daily living domain score should be summed as follow: Σ (12, 22, 23, 25, 26). Scales and subscales are calculated without weighting of any kind, and reported as integer sum of listed questionnaire items (range: 0 - 20). The QOL-DN version that was administered in the study was modified with a 2-week recall period." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.82
Placebo2.94

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Norfolk Quality of Life-Diabetic Neuropathy (Norfolk QOL-DN) Total Quality of Life (TQOL) Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on quality of life of participants with diabetic neuropathy. All symptoms (1 - 7) are scored as either 1 or 0, indicating presence or absence of the symptom. With exception of questions 31 and 32, the other items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). In question 31, good, the middle item, is scored as 0, very good as -1, excellent as -2, fair as 1, and poor as 2. In question 32, about the same, the middle item, is scored as 0, somewhat better as -1, much better as -2, somewhat worse as 1, and much worse as 2. TQOL score should be summed as follow: sum (Σ) (1 - 7, 8 - 35). The (sub)scales are calculated without weighting of any kind, and reported as the integer sum of listed questionnaire items (range: -4 - 136). The QOL-DN version that was administered in this study was modified with a 2-week recall period." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin37.22
Placebo38.30

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Norfolk QOL-DN Symptoms Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess the impact of diabetic neuropathy on quality of life of participants with diabetic neuropathy. All symptoms (1 - 7) are scored as either 1 or 0, indicating presence or absence of the symptom. Item 9 is scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). The symptoms domain score should be summed as follow: Σ (1 - 7, 9). The scales and subscales are calculated without weighting of any kind, and reported as the integer sum of the listed questionnaire items (range: 0 - 32). The QOL-DN version that was administered in this study was modified with a 2-week recall period." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin7.51
Placebo7.86

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Norfolk QOL-DN Small Fiber Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on quality of life of participants with diabetic neuropathy. The items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). The small fiber domain score should be summed as follow: Σ (10, 16, 17, 18). Scales and subscales are calculated without weighting of any kind, and reported as integer sum of the listed questionnaire items (range: 0 - 16). The QOL-DN version that was administered in this study was modified with a 2-week recall period." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.57
Placebo2.58

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Norfolk QOL-DN Physical Functioning / Large Fiber Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess the impact of diabetic neuropathy on quality of life of participants with diabetic neuropathy. With exception of questions 31 and 32, items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). In question 31, good, middle item, is scored as 0, very good as -1 , excellent as -2, fair as 1, and poor as 2. In question 32, about the same, middle item, is scored as 0, somewhat better as -1, much better as -2, somewhat worse as 1, and much worse as 2. Physical functioning / large fiber domain score should be summed as follow: Σ (8, 11, 13 - 15, 24, 27 - 35). Scales and subscales are calculated without weighting of any kind, and reported as integer sum of listed questionnaire items (range: -4 - 56). QOL-DN version that was administered in the study was modified with a 2-week recall period." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin23.17
Placebo23.66

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Mean Sleep Interference Rating Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"The daily sleep diary consists of an 11-point numeric rating scale with which the participant rates how painful DPN pain has interfered with their sleep during the past 24 hours. Zero indicates does not interfere with sleep and 10 indicates completely interferes (unable to sleep due to pain). Self assessment was performed daily in the evening before bedtime on a telephone via IVRS (time window for completion between 6.00 pm to midnight) after completion of the daily pain diary." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin4.11
Placebo4.35

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Average Diabetic Peripheral Neuropathy (DPN) Pain Based on a Numeric Rating Scale (NRS) Over the Last 7 Days of Each Treatment Period (Week 6 of Each Treatment Period)

"The daily pain diary consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by having chosen the appropriate number between 0 and 10. Self assessment was performed daily in the evening before bedtime on a telephone via interactive voice recognition system (IVRS) (time window for completion between 6.00 pm to midnight). The endpoint mean pain score was defined as the mean of the last 7 daily diary pain ratings while taking study drug in each treatment period - period 1 and period 2, respectively. A rating of 1 - 3 was considered as mild pain; 4 - 6 as moderate pain; and 7 - 10 as severe pain." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin4.980
Placebo5.018

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BPI-sf Score for Pain-Interference Domain at the End of Each Treatment Period (Week 6 of Each Treatment Period)

The BPI-sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during a 24 hour period prior to evaluation. Seven sub-questions evaluates the level of interference of pain on daily functioning (general activity, walking, work ability, mood, enjoyment of life, relations with other people, and sleep) on an 11-point scale (0: does not interfere; 10: completely interferes). Scores range from 0 - 10 with higher scores indicating greater interference. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin3.50
Placebo3.59

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Brief Pain Inventory-Short Form (BPI-sf) Score for Pain-Severity Domain at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"The BPI-sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during a 24 hour period prior to evaluation. Four items measure pain (0: no pain; 10: worst pain possible) at its worst, least, average, and now (current pain) on an 11-point scale. Scores range from 0 - 10 with higher scores indicating greater pain severity." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin4.49
Placebo4.48

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EQ-5D Anxiety / Depression Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

EQ-5D is a participant-completed 5-item questionnaire designed to assess health related quality of life in terms of a single index value or utility score. There are 5 dimensions: mobility, self-care, usual activities, pain / discomfort, and anxiety / depression. Each dimension is rated on a 3-point response scale [1 = no problems, 2 = some/moderate problems, 3 = extreme problems] and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin1.30
Placebo1.35

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EQ-5D Dolan 1997 Index Summary Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

EQ-5D is a participant-completed 5-item questionnaire designed to assess health related quality of life in terms of a single index value or utility score. There are 5 dimensions: mobility, self-care, usual activities, pain / discomfort, and anxiety / depression. Each dimension is rated on a 3-point response scale [1 = no problems, 2 = some/moderate problems, 3 = extreme problems] and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health. The utility score is calculated using the Dolan 1997 algorithm and the revised version which was provided to the EuroQol Group by Dolan in 2001 - but later published in medical care in 2002. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin0.63
Placebo0.65

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EQ-5D Dolan 2002 Index Summary Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

EQ-5D is a participant-completed 5-item questionnaire designed to assess health related quality of life in terms of a single index value or utility score. There are 5 dimensions: mobility, self-care, usual activities, pain / discomfort, and anxiety / depression. Each dimension is rated on a 3-point response scale [1 = no problems, 2 = some/moderate problems, 3 = extreme problems] and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health. The utility score is calculated using the Dolan 1997 algorithm and the revised version which was provided to the EuroQol Group by Dolan in 2001 - but later published in medical care in 2002. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin0.63
Placebo0.64

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Norfolk QOL-DN Autonomic Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess the impact of diabetic neuropathy on quality of life of participants with diabetic neuropathy. The items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). The autonomic domain score should be summed as follow: Σ (19, 20, 21). The scales and subscales are calculated without weighting of any kind, and reported as the integer sum of the listed questionnaire items (range: 0 - 12). The QOL-DN version that was administered in this study was modified with a 2-week recall period." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin1.12
Placebo1.26

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EQ-5D Pain / Discomfort Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

EQ-5D is a participant-completed 5-item questionnaire designed to assess health related quality of life in terms of a single index value or utility score. There are 5 dimensions: mobility, self-care, usual activities, pain / discomfort, and anxiety / depression. Each dimension is rated on a 3-point response scale [1 = no problems, 2 = some/moderate problems, 3 = extreme problems] and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.03
Placebo1.98

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PGIC Score at the End of Period 1 (Week 6) - Categorized Scores

The PGIC is a participant-rated instrument that measures the participant's assessment of change in his/her overall status on a scale ranging from 1 (very much improved) to 7 (very much worse). Original scores (7 different scores) and categorized scores (4 different scores) were provided. Categorized scores were very much improved (consisting of very much improved and much improved); any improvement (consisting of very much improved, much improved, and minimally improved); no change (consisting of no change); and any worsening (consisting of minimally worse, much worse, and very much worse). Due to the crossover design, PGIC was analyzed at the end of period 1 (V5). (NCT01455415)
Timeframe: End of Period 1 (V5)

,
Interventionpercentage of participants (Number)
Very much/much improvedAny improvementNo changeAny worsening
Placebo24.563.623.110.5
Pregabalin35.875.014.99.5

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Patient Global Impression of Change (PGIC) Score at the End of Period 1 (Week 6) - Original Scores

The PGIC is a participant-rated instrument that measures the participant's assessment of change in his/her overall status on a scale ranging from 1 (very much improved) to 7 (very much worse). Due to the crossover design, PGIC was analyzed at the end of period 1 (V5). (NCT01455415)
Timeframe: End of Period 1 (V5)

,
Interventionpercentage of participants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worseMissing
Placebo4.919.639.223.17.01.42.12.8
Pregabalin8.127.739.214.96.12.01.40.7

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Percentage of Participants Achieving 50% Reduction in Mean DPN Pain Score From Baseline at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"Daily pain diary consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by having chosen the appropriate number between 0 and 10. Self assessment was performed daily in the evening before bedtime on a telephone via IVRS (time window for completion between 6.00 pm to midnight). The endpoint mean pain score was defined as the mean of the last 7 daily diary pain ratings while taking study drug in each treatment period - period 1 and period 2, respectively. A rating of 1 - 3 was considered as mild pain; 4 - 6 as moderate pain; and 7 - 10 as severe pain." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionpercentage of participants (Number)
Pregabalin20.22
Placebo15.58

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Percentage of Participants Achieving 30% Reduction in Mean DPN Pain Score From Baseline at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"Daily pain diary consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by having chosen the appropriate number between 0 and 10. Self assessment was performed daily in the evening before bedtime on a telephone via IVRS (time window for completion between 6.00 pm to midnight). The endpoint mean pain score was defined as the mean of the last 7 daily diary pain ratings while taking study drug in each treatment period - period 1 and period 2, respectively. A rating of 1 - 3 was considered as mild pain; 4 - 6 as moderate pain; and 7 - 10 as severe pain." (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionpercentage of participants (Number)
Pregabalin34.56
Placebo31.16

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EQ-5D Self-Care Domain Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

EQ-5D is a participant-completed 5-item questionnaire designed to assess health related quality of life in terms of a single index value or utility score. There are 5 dimensions: mobility, self-care, usual activities, pain / discomfort, and anxiety / depression. Each dimension is rated on a 3-point response scale [1 = no problems, 2 = some/moderate problems, 3 = extreme problems] and the scores are combined to form a single index utility value between 0 and 1 with higher scores indicating better health. (NCT01455415)
Timeframe: End of Period (includes both Visits 5 and 9)

Interventionunits on a scale (Least Squares Mean)
Pregabalin1.18
Placebo1.18

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Change From Baseline in MOS-Sleep Scale, Snoring Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The snoring subscale score also ranged from 0 to 100, with lower scores indicating less snoring. (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.00
Placebo-3.73

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Percentage of Participants Who Had Optimal Sleep at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The MOS optimal sleep subscale was a binary outcome derived from the sleep quantity responses: the response was YES if sleep quantity was 7 or 8 hours per night. (NCT01455428)
Timeframe: Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionpercentage of participants (Number)
Pregabalin49.5
Placebo40.6

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Change From Baseline in MOS-Sleep Scale, Sleep Problems Index Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The sleep problems index subscale score also ranged from 0 to 100, with lower scores indicating fewer sleep problems. (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-7.38
Placebo-4.54

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Percentage of 30 Percent (%) Responders at Endpoint

"The DPRS consists of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. A 30% responder was a participant who had 30% reduction or more in mean pain score at the end of the fixed dose phase (Day 57/Week 8)/Early Termination (Study Endpoint) compared to baseline." (NCT01455428)
Timeframe: End of fixed dose phase (Day 57/Week 8)/Early Termination (Study Endpoint)

Interventionpercentage of participants (Number)
Pregabalin52.3
Placebo30.6

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Change From Baseline in Mean Pain Score at Endpoint

"The daily pain rating scale (DPRS) consists of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. The mean endpoint pain score was obtained from the last 7 available DPRS scores of the daily pain diary while the participant was on study medication, up to and including the day after the last Week 8 (Day 57) dose." (NCT01455428)
Timeframe: Baseline until end of fixed dose phase (Day 57/Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-1.81
Placebo-1.09

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Change From Baseline in MOS-Sleep Scale, Sleep Disturbance Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. For sleep disturbance, the subscale score also ranged from 0 to 100, with higher scores representing greater sleep disturbance. (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-11.97
Placebo-4.76

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Baseline Mean Pain Score

The daily pain rating scale (DPRS) consists of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. (NCT01455428)
Timeframe: Baseline

Interventionunits on a scale (Mean)
Pregabalin5.93
Placebo6.08

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Change From Baseline in MOS-Sleep Scale, Sleep Adequacy Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The sleep adequacy subscale also ranged from 0 to 100, with higher scores indicating greater sleep adequacy. (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin10.44
Placebo8.64

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Change From Baseline in MOS-Sleep Scale, Awaken Short of Breath Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The awaken short of breath subscale also ranged from 0 to 100, with lower scores indicating less difficulty in breathing. (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-0.10
Placebo0.26

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Change From Baseline in Mean Sleep Interference Score at Endpoint

Pain-related sleep interference was assessed on an 11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). Participants were to describe how their pain had interfered with their sleep during the past 24 hours by choosing the appropriate number between 0 and 10. The mean endpoint score was obtained from the last 7 available scores of the daily diary while the participant was on study medication, up to and including the day after the last Week 8 (Day 57) dose. (NCT01455428)
Timeframe: Baseline until end of fixed dose phase (Day 57/Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-1.24
Placebo-0.70

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Change From Baseline in HADS Depression Total Score at Endpoint

The HADS was a self-administered questionnaire that consisted of 2 subscales, 1 measuring anxiety (HADS-A Scale) and the other measuring depression (HADS-D Scale). Each subscale was comprised of 7 items; participants assessed how each item applied to them on a scale of 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Subscores from HADS-A (Anxiety) and HADS-D (Depression) were not to be combined. The interpretation of each HADS subscales was as follows: 0-7 normal, 8-10 mild, 11-14 moderate and 15-21 severe. (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-0.65
Placebo-0.55

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Change From Baseline in HADS Anxiety Total Score at Endpoint

The HADS was a self-administered questionnaire that consisted of 2 subscales, 1 measuring anxiety (HADS-A Scale) and the other measuring depression (HADS-D Scale). Each subscale was comprised of 7 items; participants assessed how each item applied to them on a scale of 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Subscores from HADS-A (Anxiety) and HADS-D (Depression) were not to be combined. The interpretation of each HADS subscales was as follows: 0-7 normal, 8-10 mild, 11-14 moderate and 15-21 severe. (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-0.92
Placebo-0.71

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Patient Global Impression of Change (PGIC) Score at Endpoint

The PGIC was a participant-rated global measure that provided a clinically relevant and easy to interpret account of a participant's perception of the clinical importance of their own improvement or worsening during their involvement in a clinical study. Participants rated their overall improvement on a 7-point scale where scores ranged from 1 (very much improved) to 7 (very much worse). (NCT01455428)
Timeframe: Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.68
Placebo3.17

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Clinical Global Impression of Change (CGIC) Score at Endpoint

The CGIC was a clinician-rated global measure that provided a clinically relevant and easy to interpret account of a clinician's perception of the clinical importance of the participant's improvement or worsening during their involvement in a clinical study. Clinicians rated the participant's overall improvement on a 7-point scale where scores ranged from 1 (very much improved) to 7 (very much worse). (NCT01455428)
Timeframe: Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.55
Placebo3.18

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Change From Baseline in MOS-Sleep Scale, Somnolence Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The somnolence subscale score also ranged from 0 to 100, with lower scores indicating less somnolence. (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin0.33
Placebo-0.54

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Change From Baseline in Pain VAS From the SF-MPQ at Endpoint

The VAS was part of the SF-MPQ scale and reflected the overall pain intensity score. The pain VAS was a horizontal line; 100 mm in length, was self-administered by the participant in order to rate pain from 0 (no pain) to 100 (worst possible pain). (NCT01455428)
Timeframe: Baseline to Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-20.71
Placebo-12.53

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Change From Baseline in PPI Scale From the SF-MPQ at Endpoint

The PPI was part of the SF-MPQ scale and measured the participant's present pain intensity on a 6-point scale ranging from 0 (no pain) to 5 (excruciating). (NCT01455428)
Timeframe: Baseline to Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin-0.79
Placebo-0.42

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Change From Baseline in Weekly Mean Sleep Interference Scores at Weeks 1 to 8

Pain-related sleep interference was assessed on an 11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). Participants were to describe how their pain had interfered with their sleep during the past 24 hours by choosing the appropriate number between 0 and 10. The weekly mean score was the sum of the daily scores divided by the number of diary entries during that week. (NCT01455428)
Timeframe: Baseline and weekly from Weeks 1 to 8

,
Interventionunits on a scale (Least Squares Mean)
Week 1 change from baselineWeek 2 change from baselineWeek 3 change from baselineWeek 4 change from baselineWeek 5 change from baselineWeek 6 change from baselineWeek 7 change from baselineWeek 8 change from baseline
Placebo0.01-0.16-0.35-0.51-0.62-0.74-0.79-0.84
Pregabalin-0.52-0.82-0.92-0.96-1.02-1.13-1.27-1.31

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Baseline Mean Sleep Interference Score

Pain-related sleep interference was assessed on an 11-point numerical rating scale ranging from 0 (did not interfere with sleep) to 10 (completely interfered [unable to sleep due to pain]). Participants were to describe how their pain had interfered with their sleep during the past 24 hours by choosing the appropriate number between 0 and 10. (NCT01455428)
Timeframe: Baseline

Interventionunits on a scale (Mean)
Pregabalin3.81
Placebo4.54

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Change From Baseline in MOS-Sleep Scale, Quantity of Sleep Score at Endpoint

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. The MOS Sleep Quantity sub-scale scores ranged from 0 to 24 (number of hours slept). (NCT01455428)
Timeframe: Baseline and Day 57 (Week 8)/Early Termination (Study Endpoint)

Interventionunits on a scale (Least Squares Mean)
Pregabalin0.69
Placebo0.25

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Change From Baseline in Weekly Mean Pain Score at Weeks 1 to 8

"The DPRS consists of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10. The weekly mean pain score was the sum of the daily scores divided by the number of diary entries during that week." (NCT01455428)
Timeframe: Baseline and weekly from Weeks 1 to 8

,
Interventionunits on a scale (Least Squares Mean)
Week 1 change from baselineWeek 2 change from baselineWeek 3 change from baselineWeek 4 change from baselineWeek 5 change from baselineWeek 6 change from baselineWeek 7 change from baselineWeek 8 change from baseline
Placebo-0.12-0.35-0.65-0.85-0.99-1.11-1.07-1.21
Pregabalin-0.62-1.00-1.23-1.36-1.50-1.70-1.78-1.91

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Change From Baseline in Short Form McGill Pain Questionnaire (SF-MPQ) Score at Weeks 1, 3, 5, and 8

SF-MPQ was assessed according to the participant's answer to the SF-MPQ questionnaire. The score for each composite scale (sensory, affective, and total) was derived by summing the reported intensity value for each item within a particular scale where None=0, Mild=1, Moderate=2, and Severe=3. The sensory score was the sum of the scores of the first 11 pain descriptors (throbbing, shooting, stabbing, sharp, cramping, gnawing, hot-burning, aching, heavy, tender, and splitting) and could range from 0-33. The affective score was the sum of the scores of the last 4 pain descriptors (tiring-exhausting, sickening, fearful, and punishing-cruel) and could range from 0-12. The total score was the sum of the scores of all 15 pain descriptors and could range from 0 to 45. Higher scores indicated greater pain. (NCT01455428)
Timeframe: Baseline; Weeks 1, 3, 5, and 8

,
Interventionunits on a scale (Mean)
Sensory score, BaselineSensory score, Week 1 change (N=111, 106)Sensory score, Week 3 change (N=107, 101)Sensory score, Week 5 change (N=102, 96)Sensory score, Week 8 change (N=98, 93)Affective score, BaselineAffective score, Week 1 change (N=111, 105)Affective score, Week 3 change (N=107, 100)Affective score, Week 5 change (N=102, 95)Affective score, Week 8 change (N=97,90)Total score, BaselineTotal score, Week 1 change (N=111, 106)Total score, Week 3 change (N=107, 101)Total score, Week 5 change (N=102, 96)Total score, Week 8 change (N=98, 93)
Placebo8.00-0.29-1.05-1.79-1.941.31-0.28-0.46-0.59-0.669.29-0.57-1.51-2.37-2.53
Pregabalin8.24-1.68-2.97-3.31-3.611.25-0.61-0.80-0.85-0.969.50-2.29-3.77-4.17-4.57

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Baseline Pain Visual Analogue Scale (VAS) and Present Pain Intensity (PPI) Scale

The VAS was part of the Short Form McGill Pain Questionnaire (SF-MPQ) scale and reflected the overall pain intensity score, The pain VAS was a horizontal line; 100 millimeters (mm) in length, was self-administered by the participant in order to rate pain from 0 (no pain) to 100 (worst possible pain). The PPI was part of the SF-MPQ scale and measured the participant's present pain intensity on a 6-point scale ranging from 0 (no pain) to 5 (excruciating). (NCT01455428)
Timeframe: Baseline

,
Interventionunits on a scale (Mean)
VASPPI
Placebo62.602.42
Pregabalin60.392.33

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Baseline Medical Outcomes Study (MOS)-Sleep Scale Scores

The MOS-Sleep Scale was a participant-rated questionnaire consisting of 12 items that assessed key constructs of sleep. Instrument scoring yielded 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. The total score ranged from 0 to 100. With the exception of sleep adequacy, optimal sleep, and quantity, higher scores reflected greater impairment in the MOS-Sleep subscales. The MOS-Sleep Scale was used to evaluate sleep during the previous week. (NCT01455428)
Timeframe: Baseline

,
Interventionunits on a scale (Mean)
Sleep disturbance scoreSnoring scoreAwaken short of breath scoreQuantity of sleep scoreSleep adequacy scoreSomnolence scoreSleep problems index score
Placebo35.0830.838.075.9760.4630.8929.27
Pregabalin36.0929.199.916.0557.6632.2531.38

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Baseline Hospital Anxiety and Depression Scale (HADS) Scores

The HADS was a self-administered questionnaire that consisted of 2 subscales, 1 measuring anxiety (HADS-A Scale) and the other measuring depression (HADS-D Scale). Each subscale comprised of 7 items; participants assessed how each item applied to them on a scale of 0 (no presence of anxiety or depression) to 3 (severe feeling of anxiety or depression). Subscores from HADS-A (Anxiety) and HADS-D (Depression) were not to be combined. The interpretation of each HADS subscales was as follows: 0-7 normal, 8-10 mild, 11-14 moderate and 15-21 severe. (NCT01455428)
Timeframe: Baseline

,
Interventionunits on a scale (Mean)
Anxiety total scoreDepression total score
Placebo3.373.47
Pregabalin3.223.45

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Number of Participants With Suicidal Ideation as Per Columbia Suicide Severity Rating Scale (C-SSRS) Mapped to Columbia Classification Algorithm of Suicide Assessment (C-CASA)

"Number of participants with C-CASA code 4 are reported. C-SSRS responses mapping to C-CASA suicidal ideation code 4 are as follows: Yes on wish to be dead, non-specific active suicidal thoughts, active suicidal ideation with any methods (not plan) without intent to act, active suicidal ideation with some intent to act, without specific plan, active suicidal ideation with some intent to act, without specific plan." (NCT01463306)
Timeframe: Baseline (Day 1), Post-baseline on Day 1 up to 12 Months

,,
InterventionParticipants (Count of Participants)
BaselinePost-baseline on Day 1 up to 12 Months
Direct Pregabalin10
Placebo-Previous to Pregabalin-Current22
Pregabalin: Previous and Current33

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28-Days Seizure Rate at Month 9

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 9

InterventionSeizures Per 28-Days (Mean)
Partial Onset Seizures
Direct Pregabalin3.00

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28-Days Seizure Rate at Month 9

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 9

,
InterventionSeizures Per 28-Days (Mean)
Partial Onset SeizuresPrimary Generalized Tonic Clonic Seizures
Placebo-Previous to Pregabalin-Current43.130.62
Pregabalin: Previous and Current38.170.96

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28-Days Seizure Rate at Week 1

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Week 1

,
InterventionSeizures Per 28-Days (Mean)
Partial Onset SeizuresPrimary Generalized Tonic Clonic Seizures
Placebo-Previous to Pregabalin-Current190.452.39
Pregabalin: Previous and Current102.892.07

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Absolute Values for Body Height at Baseline

(NCT01463306)
Timeframe: Baseline

InterventionCentimeters (Mean)
Age: 4 Years to <10 YearsAge: 10 Years to 16 Years
Direct Pregabalin126.0153.4

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Absolute Values for Body Height at Baseline

(NCT01463306)
Timeframe: Baseline

,
InterventionCentimeters (Mean)
Age: 1 Month to <2 YearsAge: 2 Years to <4 YearsAge: 4 Years to <10 YearsAge: 10 Years to 16 YearsAge: >=17 Years
Placebo-Previous to Pregabalin-Current74.891.0118.5154.7170.7
Pregabalin: Previous and Current74.792.2119.3153.5170.4

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28-Days Seizure Rate at Month 4

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 4

,
InterventionSeizures Per 28-Days (Mean)
Partial Onset SeizuresPrimary Generalized Tonic Clonic Seizures
Placebo-Previous to Pregabalin-Current58.330.72
Pregabalin: Previous and Current67.321.09

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28-Days Seizure Rate at Week 1

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Week 1

InterventionSeizures Per 28-Days (Mean)
Partial Onset Seizures
Direct Pregabalin17.83

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Absolute Values for Body Height at Month 12

(NCT01463306)
Timeframe: Month 12

InterventionCentimeters (Mean)
Age: 4 Years to <10 YearsAge: 10 Years to 16 Years
Direct Pregabalin128.2153.7

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Absolute Values for Body Height at Month 12

(NCT01463306)
Timeframe: Month 12

,
InterventionCentimeters (Mean)
Age: 1 Month to <2 YearsAge: 2 Years to <4 YearsAge: 4 Years to <10 YearsAge: 10 Years to 16 YearsAge: >=17 Years
Placebo-Previous to Pregabalin-Current85.398.1126.6160.5170.6
Pregabalin: Previous and Current84.499.3128.2158.1170.8

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Number of Participants With Tanner Staging Evaluation at Month 12

Tanner stage defines physical measurements of development based on external primary and secondary sex characteristics. Participants were evaluated for pubic hair distribution, breast development (only females) and genital development (only males), with values ranging from stage 1 (pre-pubertal characteristics) to stage 5 (adult or mature characteristics). (NCT01463306)
Timeframe: Month 12

InterventionParticipants (Count of Participants)
Pubic Hair72061229Pubic Hair72061230Pubic Hair72061231Breast72061229Breast72061231Breast72061230Genitalia72061230Genitalia72061229Genitalia72061231
Stage 2Stage 3Stage 1Stage 5Not DoneMissingStage 4
Pregabalin: Previous and Current68
Placebo-Previous to Pregabalin-Current38
Direct Pregabalin2
Pregabalin: Previous and Current35
Placebo-Previous to Pregabalin-Current17
Direct Pregabalin1
Pregabalin: Previous and Current38
Pregabalin: Previous and Current21
Placebo-Previous to Pregabalin-Current11
Direct Pregabalin0
Pregabalin: Previous and Current23
Pregabalin: Previous and Current1
Pregabalin: Previous and Current27
Placebo-Previous to Pregabalin-Current15
Pregabalin: Previous and Current17
Placebo-Previous to Pregabalin-Current8
Pregabalin: Previous and Current19
Placebo-Previous to Pregabalin-Current5
Pregabalin: Previous and Current7
Placebo-Previous to Pregabalin-Current3
Pregabalin: Previous and Current12
Pregabalin: Previous and Current0
Placebo-Previous to Pregabalin-Current1
Placebo-Previous to Pregabalin-Current0
Pregabalin: Previous and Current40
Placebo-Previous to Pregabalin-Current19
Pregabalin: Previous and Current22
Placebo-Previous to Pregabalin-Current12
Pregabalin: Previous and Current20
Placebo-Previous to Pregabalin-Current10
Pregabalin: Previous and Current9
Pregabalin: Previous and Current13
Placebo-Previous to Pregabalin-Current6

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Number of Participants With Tanner Staging Evaluation at Baseline

Tanner stage defines physical measurements of development based on external primary and secondary sex characteristics. Participants were evaluated for pubic hair distribution, breast development (only females) and genital development (only males), with values ranging from stage 1 (pre-pubertal characteristics) to stage 5 (adult or mature characteristics). (NCT01463306)
Timeframe: Baseline (Day 1)

InterventionParticipants (Count of Participants)
Pubic Hair72061229Pubic Hair72061230Pubic Hair72061231Breast72061229Breast72061230Breast72061231Genitalia72061229Genitalia72061231Genitalia72061230
MissingStage 1Stage 2Stage 3Stage 4Stage 5Not Done
Pregabalin: Previous and Current95
Placebo-Previous to Pregabalin-Current44
Direct Pregabalin4
Pregabalin: Previous and Current34
Placebo-Previous to Pregabalin-Current17
Pregabalin: Previous and Current33
Placebo-Previous to Pregabalin-Current16
Placebo-Previous to Pregabalin-Current15
Pregabalin: Previous and Current16
Placebo-Previous to Pregabalin-Current6
Pregabalin: Previous and Current0
Placebo-Previous to Pregabalin-Current0
Pregabalin: Previous and Current37
Placebo-Previous to Pregabalin-Current18
Pregabalin: Previous and Current17
Placebo-Previous to Pregabalin-Current8
Pregabalin: Previous and Current15
Pregabalin: Previous and Current19
Pregabalin: Previous and Current9
Pregabalin: Previous and Current1
Pregabalin: Previous and Current50
Placebo-Previous to Pregabalin-Current23
Direct Pregabalin2
Pregabalin: Previous and Current24
Placebo-Previous to Pregabalin-Current11
Pregabalin: Previous and Current20
Placebo-Previous to Pregabalin-Current10
Pregabalin: Previous and Current13
Placebo-Previous to Pregabalin-Current7
Pregabalin: Previous and Current7
Placebo-Previous to Pregabalin-Current3
Direct Pregabalin0
Placebo-Previous to Pregabalin-Current1
Direct Pregabalin1
Placebo-Previous to Pregabalin-Current9

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Number of Participants With Suicidal Behavior as Per Columbia Suicide Severity Rating Scale (C-SSRS) Mapped to Columbia Classification Algorithm of Suicide Assessment (C-CASA)

"Number of participants with C-CASA code 1 or 2 or 3 are reported. C-SSRS responses mapping to C-CASA suicidal behavior codes 1, 2, or 3 are as follows: (1) completed suicide; (2) suicide attempt (response of Yes on actual attempt); (3) preparatory acts toward imminent suicidal behavior (Yes on aborted attempt, interrupted attempt, preparatory acts or behavior)." (NCT01463306)
Timeframe: Baseline (Day 1), Post-baseline up to 12 Months

,,
InterventionParticipants (Count of Participants)
BaselinePost-baseline on Day 1 up to 12 Months
Direct Pregabalin00
Placebo-Previous to Pregabalin-Current10
Pregabalin: Previous and Current12

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Number of Participants With Maximum Change From Baseline up to 12 Months in 12-Lead Electrocardiogram (ECG) Parameters

Categories for which data is reported are: 1) maximum (max) PR interval increase from baseline (IFB) (millisecond [msec]) percent change (PctChg) >=25/50%; 2) maximum QRS complex increase from baseline (msec) PctChg>=50%; 3) maximum QTcB interval (Bazett's correction) increase from baseline (msec): change >=30 to <60; change >=60; 4) maximum QTcF interval (Fridericia's correction) increase from baseline (msec): change >=30 to <60; change >=60. 'PctChg>=25/50%': >= 25% increase from baseline when baseline ECG parameter is > 200 msec, and is >= 50% increase from baseline when baseline ECG parameter is non-missing and <=200 msec. (NCT01463306)
Timeframe: Baseline up to 12 Months

,,
InterventionParticipants (Count of Participants)
Max PR interval IFB PctChg >=25/50%Max QRS complex IFB PctChg >=50%Max QTcB interval IFB change >=30 - <60Max QTcB interval IFB change >=60Max QTcF interval IFB change >=30 - <60Max QTcF interval IFB change >=60
Direct Pregabalin000010
Placebo-Previous to Pregabalin-Current0011090
Pregabalin: Previous and Current10290181

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Number of Participants With Clinically Significant Change From Baseline in Physical and Neurological Examination Findings up to 12 Months

Physical examination assessed: general appearance, dermatological, head and eyes, ears, nose, mouth, and throat, pulmonary, cardiovascular, abdominal, genitourinary (optional), lymphatic, musculoskeletal/extremities. Neurological examination assessed: level of consciousness, mental status, cranial nerve assessment, muscle strength and tone, reflexes, pin prick and vibratory sensation, coordination and gait. Investigator judged clinically significant change from baseline in physical and neurological examination findings. (NCT01463306)
Timeframe: Baseline up to 12 Months

,,
InterventionParticipants (Count of Participants)
Physical ExaminationNeurological Examination
Direct Pregabalin02
Placebo-Previous to Pregabalin-Current64
Pregabalin: Previous and Current810

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Number of Participants With >=7 Percent (%) Change From Baseline in Body Weight up to 12 Months

In this outcome measure number of participants with increase and decrease of >=7% in body weight, from baseline up to 12 months are reported. (NCT01463306)
Timeframe: Baseline up to 12 Months

,,
InterventionParticipants (Count of Participants)
Weight increase from baseline >=7%Weight decrease from baseline >=7%
Direct Pregabalin80
Placebo-Previous to Pregabalin-Current1474
Pregabalin: Previous and Current2902

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Number of Participants Meeting Pre-defined Criteria for Vital Signs Abnormalities

Pre-defined criteria of vital signs abnormalities: maximum (max.) increase or decrease from baseline in sitting/supine systolic blood pressure (SBP) >=30 millimeter of mercury (mmHg); maximum increase or decrease from baseline in sitting/supine diastolic blood pressure (DBP) >=20 mmHg. (NCT01463306)
Timeframe: Baseline up to 12 months

,,
InterventionParticipants (Count of Participants)
Max. increase from baseline in SBP>=30 mmHgMax. decrease from baseline in SBP>=30 mmHgMax. increase from baseline in DBP>=20 mmHgMax. decrease from baseline in DBP>=20 mmHg
Direct Pregabalin0010
Placebo-Previous to Pregabalin-Current15166
Pregabalin: Previous and Current983422

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Number of Participants as Per Reliable Change Index Category for Cogstate Pediatric Identification Task

"CogState brief battery consisted of 2 tasks-detection and pediatric identification task using a laptop computer with external response buttons. Prior tasks, participants were briefed rules, given an interactive demonstration and a sufficient number of practice trials. For each task, participant responded yes using a response button with dominant hand. Participants had to respond as fast and as accurately as possible. Pediatric identification task: measured choice reaction time to assess visual attention. An event (a card turning face up) occurred in center of computer screen and participant decided if event met a predefined and unchanging criterion (is the color of the card black?); answered YES if criterion was met. A participant's RCI was calculated by dividing the change from individual baseline score by ([square root 2] times WSD),WSD=within-subject standard deviation from Cogstate task normative data. Improvement in cognition: RCI <=-1.65, decline in cognition: RCI =>1.65." (NCT01463306)
Timeframe: Month 12

,,
InterventionParticipants (Count of Participants)
Improvement (RCI <=-1.65)Decline (RCI =>1.65)
Direct Pregabalin22
Placebo-Previous to Pregabalin-Current96
Pregabalin: Previous and Current1716

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28-Days Seizure Rate at Month 1

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 1

,
InterventionSeizures Per 28-Days (Mean)
Partial Onset SeizuresPrimary Generalized Tonic Clonic Seizures
Placebo-Previous to Pregabalin-Current178.531.66
Pregabalin: Previous and Current96.391.43

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28-Days Seizure Rate at Month 1

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 1

InterventionSeizures Per 28-Days (Mean)
Partial Onset Seizures
Direct Pregabalin33.42

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Number of Participants With Incidence of Laboratory Abnormalities

Criteria for laboratory abnormalities: Hemoglobin (Hgb), hematocrit, red blood cell(RBC) count: <0.8*lower limit of normal(LLN), platelet: <0.5*LLN/greater than (>)1.75*upper limit of normal (ULN), white blood cell (WBC): <0.6*LLN/>1.5*ULN, lymphocyte, neutrophil- absolute/%:<0.8*LLN/>1.2*ULN, basophil, eosinophil, monocyte- absolute/%:>1.2*ULN; total/direct/indirect bilirubin >1.5*ULN, aspartate aminotransferase (AT), alanine AT, gammaglutamyl transferase, alkaline phosphatase:> 3.0*ULN, total protein, albumin: <0.8*LLN/>1.2*ULN; thyroxine, thyroid stimulating hormone <0.8*LLN/>1.2*ULN; cholesterol, triglycerides:> >1.3*ULN; blood urea nitrogen, creatinine:>1.3*ULN; sodium <0.95*LLN/>1.05*ULN, potassium, chloride, calcium: <0.9*LLN or >1.1*ULN; glucose <0.6*LLN/>1.5*ULN, creatine kinase>2.0*ULN; urine (specific gravity <1.003/>1.030, pH <4.5/>8, glucose, ketones, protein: >=1, WBC, RBC:>=20, bacteria >20, hyaline casts/casts >1); prothrombin (PT), PT international ratio>1.1*ULN. (NCT01463306)
Timeframe: Baseline up to 12 Months

InterventionParticipants (Count of Participants)
Pregabalin: Previous and Current297
Placebo-Previous to Pregabalin-Current164
Direct Pregabalin8

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28-Days Seizure Rate at Month 2

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 2

,
InterventionSeizures Per 28-Days (Mean)
Partial Onset SeizuresPrimary Generalized Tonic Clonic Seizures
Placebo-Previous to Pregabalin-Current89.091.36
Pregabalin: Previous and Current79.331.27

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28-Days Seizure Rate at Month 12/Early Termination

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 12/Early Termination

InterventionSeizures Per 28-Days (Mean)
Partial Onset Seizures
Direct Pregabalin11.08

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28-Days Seizure Rate at Month 2

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 2

InterventionSeizures Per 28-Days (Mean)
Partial Onset Seizures
Direct Pregabalin22.16

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28-Days Seizure Rate at Month 4

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 4

InterventionSeizures Per 28-Days (Mean)
Partial Onset Seizures
Direct Pregabalin15.45

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28-Days Seizure Rate at Month 12/Early Termination

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 12/Early Termination

,
InterventionSeizures Per 28-Days (Mean)
Partial Onset SeizuresPrimary Generalized Tonic Clonic Seizures
Placebo-Previous to Pregabalin-Current117.881.33
Pregabalin: Previous and Current56.041.02

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Number of Participants as Per Reliable Change Index (RCI) Category for Cogstate Detection Task

"CogState brief battery consisted of 2 tasks- detection and pediatric identification task using a laptop computer with external response buttons. Prior tasks, participants were briefed rules, given an interactive demonstration and a sufficient number of practice trials. For each task, participant responded yes using a response button with dominant hand. Participants had to respond as fast and as accurately as possible. Detection task: measured simple reaction time to assess psychomotor function. Participant pressed a YES response key as soon as they detected an event (ie, a card turning face up presented in the center of the computer screen). A participant's RCI was calculated by dividing the change from individual baseline score by ([square root 2] times WSD), where WSD is within-subject standard deviation from Cogstate detection task normative data. Improvement in cognition when RCI <=-1.65, decline in cognition when RCI =>1.65." (NCT01463306)
Timeframe: Month 12

,,
InterventionParticipants (Count of Participants)
Improvement (RCI <= -1.65)Decline (RCI =>1.65)
Direct Pregabalin21
Placebo-Previous to Pregabalin-Current86
Pregabalin: Previous and Current2113

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28-Days Seizure Rate at Month 6

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 6

InterventionSeizures Per 28-Days (Mean)
Partial Onset Seizures
Direct Pregabalin4.25

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28-Days Seizure Rate at Month 6

28-days seizure rate was defined as number of seizures per 28-day period. 28-days seizure rate have been reported separately for partial onset seizure and primary generalized tonic clonic seizure. Partial onset seizure: a seizure that starts in one area of the brain. This kind of seizure is brief, lasting seconds to less than 2 minutes. Primary generalized tonic clonic seizure: a seizure that starts in one area of the brain, then spreads to both sides of the brain as a tonic-clonic seizure and usually last 1 to 3 minutes. (NCT01463306)
Timeframe: Month 6

,
InterventionSeizures Per 28-Days (Mean)
Partial Onset SeizuresPrimary Generalized Tonic Clonic Seizures
Placebo-Previous to Pregabalin-Current51.100.79
Pregabalin: Previous and Current50.181.02

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Mean Sleep Interference Rating Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"The daily sleep diary consists of an 11-point numeric rating scale with which the participant rates how painful DPN pain has interfered with their sleep during the past 24 hours. Zero indicates does not interfere with sleep and 10 indicates completely interferes (unable to sleep due to pain). Self-assessment was performed daily in the evening before bedtime on a telephone via IVRS (time window for completion between 6.00 pm to midnight) after completion of the daily pain diary." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin3.66
Placebo4.05

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Hospital Anxiety and Depression Scale - Depression (HADS-D) Total Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

The HADS is a 14-item self-administered questionnaire that consists of 2 scales, one measuring anxiety (HADS-A), and the other measuring depression (HADS-D). Each subscale consists of 7 statements and the participant responds as to how each item applies to him/her over the past week on 4-point response scale. Separate scores are calculated for anxiety and depression and a score (ranging from 0 to 21) is obtained for each subscale. The higher the score, the more severe the anxiety or depression. (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin3.73
Placebo3.97

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Hospital Anxiety and Depression Scale - Anxiety (HADS-A) Total Score at the End of Each Treatment Period (Week 6 of Each Treatment Period)

The Hospital Anxiety and Depression Scale (HADS) is a 14-item self-administered questionnaire that consists of 2 scales, one measuring anxiety (HADS-A), and the other measuring depression (HADS-D). Each subscale consists of 7 statements and the participant responds as to how each item applies to him/her over the past week on 4-point response scale. Separate scores are calculated for anxiety and depression and a score (ranging from 0 to 21) is obtained for each subscale. The higher the score, the more severe the anxiety or depression. (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin4.65
Placebo4.92

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DPN Pain on Walking Based on a 11-point NRS of Each Treatment Period (Week 6 of Each Treatment Period)

"The post-test DPN pain on walking NRS consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their DPN pain in their legs and/or feet while walking during the 50-foot walk test by choosing the appropriate number between 0 and 10. The post-test DPN pain on walking NRS was completed by the participant using paper-pen administration immediately after completing the 50-foot walk test at the end of each treatment period - Period 1 and Period 2, respectively. A rating of 1 - 3 was considered as mild pain; 4 - 6 as moderate pain; and 7 - 10 as severe pain." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin4.28
Placebo4.41

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Daytime Total Activity Counts Per Day Measured by Actigraphy Over the Last 7 Days of Each Treatment Period (Week 6 of Each Treatment Period)

"Actigraphy data which measured steps and daytime activity during waking hours were assessed for the last 7 days at Baseline, Visit 6, and Visit 11. Activity counts are the units of motion. It is equal to the sum of peak accelerations each second during the epoch (60 seconds). Total activity counts per day is the sum of the activity counts for each epoch (60 seconds) during the day (non-sleep period). Actigraphy was performed with an accelerometer that was worn on the hip during the waking hours. It was programmed to record movements while the device was being worn." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventioncounts (Least Squares Mean)
Pregabalin64703.14
Placebo64139.75

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BPI-sf Score for Pain-Interference With Walking Ability at the End of Each Treatment Period (Week 6 of Each Treatment Period)

The BPI-sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during a 24 hour period prior to evaluation. The BPI-sf consists of 5 questions: 4 items measure pain on an 11-point scale. Scores range from 0 - 40 with higher scores indicating greater pain severity. Another item, containing 7 sub-questions, evaluates the level of interference of pain on daily functioning (general activity, walking, work ability, mood, enjoyment of life, relations with other people, and sleep) on 11-point scales (0: does not interfere; 10: completely interferes). Scores range from 0 - 70 with higher scores indicating greater interference. The sub-score pain interference with walking ability was evaluated, as it was considered to be the most relevant in the context of this study. (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin3.75
Placebo3.93

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BPI-sf Score for Pain-Interference Domain at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"The BPI-sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during a 24 hour period prior to evaluation. The BPI-sf consists of 5 questions: 4 items measure pain (0: no pain; 10: worst pain possible) at its worst, least, average, and now (current pain) on an 11-point scale. Scores range from 0 - 40 with higher scores indicating greater pain severity. Another item, containing 7 sub-questions, evaluates the level of interference of pain on daily functioning (general activity, walking, work ability, mood, enjoyment of life, relations with other people, and sleep) on 11-point scales (0: does not interfere; 10: completely interferes). Scores range from 0 - 70 with higher scores indicating greater interference." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin22.58
Placebo23.75

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Average Diabetic Peripheral Neuropathy (DPN) Pain Based on a Numeric Rating Scale (NRS) Over the Last 7 Days of Each Treatment Period (Week 6 of Each Treatment Period)

"The daily pain diary consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by having chosen the appropriate number between 0 and 10. Self-assessment was performed daily each evening before bedtime (6.00 pm to midnight) on the telephone via Interactive Voice Recognition System (IVRS). The endpoint mean pain score was defined as the mean of the last 7 daily diary pain ratings while taking study medication in each treatment period - Period 1 and Period 2, respectively. A rating of 1 - 3 was considered as mild pain; 4 - 6 as moderate pain; and 7 - 10 as severe pain." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin4.73
Placebo4.96

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Brief Pain Inventory-Short Form (BPI-sf) Score for Pain-Severity Domain at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"The BPI-sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during a 24 hour period prior to evaluation. The BPI-sf consists of 5 questions: 4 items measure pain (0: no pain; 10: worst pain possible) at its worst, least, average, and now (current pain) on an 11-point scale. Scores range from 0 - 40 with higher scores indicating greater pain severity. Another item, containing 7 sub-questions, evaluates the level of interference of pain on daily functioning (general activity, walking, work ability, mood, enjoyment of life, relations with other people, and sleep) on 11-point scales (0: does not interfere; 10: completely interferes). Scores range from 0 - 70 with higher scores indicating greater interference." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin16.76
Placebo17.56

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Percentage of Participants With Patient Global Impression of Change (PGIC) Score From Baseline at the End of Period 1 (Week 6)

The PGIC is a participant-rated instrument that measures the participant's assessment of change in his/her overall status on a scale ranging from 1 (very much improved) to 7 (very much worse). Original scores (OS; 7 different scores) and categorized scores (CS; 4 different scores) were provided. Categorized scores were very much improved (consisting of very much improved and much improved); any improvement (consisting of very much improved, much improved, and minimally improved); no change (consisting of no change); and any worsening (consisting of minimally worse, much worse, and very much worse). Due to the crossover design, PGIC was analyzed at the end of period 1 (V6). (NCT01474772)
Timeframe: End of Period 1 (V6)

,
Interventionpercentage of participants (Number)
OS: Very much improvedOS: Much improvedOS: Minimally improvedOS: No changeOS: Minimally worseOS: Much worseOS: Very much worseCS: Very much improvedCS: Any improvementCS: No changeCS: Any worsening
Placebo5.925.527.533.35.91.01.031.458.833.37.8
Pregabalin11.239.830.613.32.02.01.051.081.613.35.1

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Norfolk QOL-DN Autonomic Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on the quality of life of participants with diabetic neuropathy. All symptoms (1 - 7) are scored as either 1 or 0, indicating presence or absence of the symptom. With the exception of questions 31 and 32, the other items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). In question 31, good, the middle item, is scored as 0, very good as -1, excellent as -2, fair as 1, and poor as 2. In question 32, about the same, the middle item, is scored as 0, somewhat better as -1, much better as -2, somewhat worse as 1, and much worse as 2. The autonomic domain score should be summed as follow: Σ(19, 20, 21). The scales and subscales are calculated without weighting of any kind, and reported as the integer sum of the listed questionnaire items." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin1.07
Placebo1.08

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Walk 12 Questionnaire Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)

The Walk-12 is a self-administered questionnaire that assesses the impact of the participant's diabetic neuropathy over the past 2 weeks on parameters associated with walking (12 questions) based on a 5-point scale (from not at all to extremely). The total score is the sum of scores from the 12 questions, which then gets transferred to a 0-100 scale with higher scores indicating greater impairment (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin35.72
Placebo37.08

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Steps Per Day Measured by Actigraphy Over the Last 7 Days of Each Treatment Period (Week 6 of Each Treatment Period)

Actigraphy data which measured steps and daytime activity during waking hours were assessed for the last 7 days at Baseline, Visit 6, and Visit 11. The participants were instructed to wear the device on their hip during the waking hours. (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionsteps (Least Squares Mean)
Pregabalin3785.65
Placebo3788.28

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Norfolk Quality of Life-Diabetic Neuropathy (Norfolk QOL-DN) Total Quality of Life (TQOL) Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on the quality of life of participants with diabetic neuropathy. All symptoms (1 - 7) are scored as either 1 or 0, indicating presence or absence of the symptom. With the exception of questions 31 and 32, the other items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). In question 31, good, the middle item, is scored as 0, very good as -1, excellent as -2, fair as 1, and poor as 2. In question 32, about the same, the middle item, is scored as 0, somewhat better as -1, much better as -2, somewhat worse as 1, and much worse as 2. TQOL score should be summed as follow: sum (Σ) (1 - 7, 8 - 35). The scales and subscales are calculated without weighting of any kind, and reported as the integer sum of the listed questionnaire items." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin29.31
Placebo30.77

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Norfolk QOL-DN Symptoms Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on the quality of life of participants with diabetic neuropathy. All symptoms (1 - 7) are scored as either 1 or 0, indicating presence or absence of the symptom. With the exception of questions 31 and 32, the other items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). In question 31, good, the middle item, is scored as 0, very good as -1, excellent as -2, fair as 1, and poor as 2. In question 32, about the same, the middle item, is scored as 0, somewhat better as -1, much better as -2, somewhat worse as 1, and much worse as 2. The symptoms domain score should be summed as follow: Σ(1 - 7, 9). The scales and subscales are calculated without weighting of any kind, and reported as the integer sum of the listed questionnaire items." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin7.65
Placebo7.99

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Norfolk QOL-DN Activities of Daily Living Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on the quality of life of participants with diabetic neuropathy. All symptoms (1 - 7) are scored as either 1 or 0, indicating presence or absence of the symptom. With the exception of questions 31 and 32, the other items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). In question 31, good, the middle item, is scored as 0, very good as -1, excellent as -2, fair as 1, and poor as 2. In question 32, about the same, the middle item, is scored as 0, somewhat better as -1, much better as -2, somewhat worse as 1, and much worse as 2. The activities of daily living domain score should be summed as follow: Σ(12, 22, 23, 25, 26). The scales and subscales are calculated without weighting of any kind, and reported as the integer sum of the listed questionnaire items." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.36
Placebo2.42

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Norfolk QOL-DN Small Fiber Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on the quality of life of participants with diabetic neuropathy. All symptoms (1 - 7) are scored as either 1 or 0, indicating presence or absence of the symptom. With the exception of questions 31 and 32, the other items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). In question 31, good, the middle item, is scored as 0, very good as -1, excellent as -2, fair as 1, and poor as 2. In question 32, about the same, the middle item, is scored as 0, somewhat better as -1, much better as -2, somewhat worse as 1, and much worse as 2. The small fiber domain score should be summed as follow: Σ(10, 16, 17, 18). The scales and subscales are calculated without weighting of any kind, and reported as the integer sum of the listed questionnaire items." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.77
Placebo2.53

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Average Weekly DPN Pain Based on a NRS (Baseline, 6 Weeks in Period 1, 2 Weeks Washout and 6 Weeks in Period 2)

"The daily pain diary consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by having chosen the appropriate number between 0 and 10. Self-assessment was performed daily each evening before bedtime (6.00 pm to midnight) on the telephone via IVRS. The longitudinal mean weekly DPN pain scores were defined as the mean of 7 daily diary pain ratings. A rating of 1 - 3 was considered as mild pain; 4 - 6 as moderate pain; and 7 - 10 as severe pain." (NCT01474772)
Timeframe: Baseline, 6 weeks in Period 1, 2 weeks washout and 6 weeks in Period 2

,
Interventionunits on a scale (Mean)
V6 (N: 101, 102)V11 (N: 97, 84)
Placebo5.294.38
Pregabalin4.664.57

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Percentage of Participants Achieving 50% Reduction in Mean DPN Pain Score From Baseline at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"The daily pain diary consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by having chosen the appropriate number between 0 and 10. Self-assessment was performed daily each evening before bedtime (6.00 pm to midnight) on the telephone via IVRS. The endpoint mean pain score was defined as the mean of the last 7 daily diary pain ratings while taking study medication in each treatment period - Period 1 and Period 2, respectively. A rating of 1 - 3 was considered as mild pain; 4 - 6 as moderate pain; and 7 - 10 as severe pain." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

,
Interventionpercentage of participants (Number)
V6 (N: 101, 102)V11 (N: 97, 84)
Placebo13.732.1
Pregabalin23.827.8

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Percentage of Participants Achieving 30% Reduction in Mean DPN Pain Score From Baseline at the End of Each Treatment Period (Week 6 of Each Treatment Period)

"The daily pain diary consisted of an 11-point numeric scale ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by having chosen the appropriate number between 0 and 10. Self-assessment was performed daily each evening before bedtime (6.00 pm to midnight) on the telephone via IVRS. The endpoint mean pain score was defined as the mean of the last 7 daily diary pain ratings while taking study medication in each treatment period - Period 1 and Period 2, respectively. A rating of 1 - 3 was considered as mild pain; 4 - 6 as moderate pain; and 7 - 10 as severe pain." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

,
Interventionpercentage of participants (Number)
V6 (N: 101, 102)V11 (N: 97, 84)
Placebo24.547.6
Pregabalin38.646.4

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Euro QoL-5 Dimensions (EQ-5D) - Health State Profile Utility Scores at the End of Each Treatment Period (Week 6 of Each Treatment Period)

The EQ-5D describes participant's health status based on 5 attributes producing an 5 digit index score. The 5 dimensions are: mobility, self-care, usual activities, pain / discomfort, and anxiety / depression. Dolan 1997 advised how to transfer this index score to a single score for clinical trials, a revised single index was published in 2001. The index uses general population weighted estimates for various health states. In general, the range of the single index tends to vary between 0 = death and 1 = perfect health and there are some states that have been rated by the general population to be worse than death which may result in numbers below 0. (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

,
Interventionunits on a scale (Least Squares Mean)
Index score Dolan 1997Index score Dolan 2001
Placebo0.6430.641
Pregabalin0.6490.650

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Norfolk QOL-DN Physical Functioning / Large Fiber Domain Score Measured Over the Last 2 Weeks of Each Treatment Period (Week 6 of Each Treatment Period)

"Norfolk QOL-DN is a 35-item participant-rated questionnaire used to assess impact of diabetic neuropathy on the quality of life of participants with diabetic neuropathy. All symptoms (1 - 7) are scored as either 1 or 0, indicating presence or absence of the symptom. With the exception of questions 31 and 32, the other items are scored according to the 5-point Likert Scale (0 - 4, no problem to severe problem). In question 31, good, the middle item, is scored as 0, very good as -1, excellent as -2, fair as 1, and poor as 2. In question 32, about the same, the middle item, is scored as 0, somewhat better as -1, much better as -2, somewhat worse as 1, and much worse as 2. The physical functioning / large fiber domain score should be summed as follow: Σ(8, 11, 13 - 15, 24, 27 - 35). The scales and subscales are calculated without weighting of any kind, and reported as the integer sum of the listed questionnaire items." (NCT01474772)
Timeframe: End of Period (includes both Visits 6 and 11)

Interventionunits on a scale (Least Squares Mean)
Pregabalin15.51
Placebo16.78

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Difference in Patient's Global Impression of Change

In the Patient Global Impression of Change (PGIC) the participant indicates the perceived change over the 7 day treatment period. The participant is requested to choose one of seven categories. Scores range from very much improved to very much worse. (NCT01485094)
Timeframe: Day 7 (end of double blind treatment)

,,
Interventionparticipants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
GRT60102682100
Matching Placebo5455000
Pregabalin5481010

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The Difference Between Baseline and End-of-double-blind Treatment Scores for Dynamic Mechanical Allodynia and Mechanical Pain Sensitivity Compared to Placebo

"Allodynia is pain due to a stimulus that does not normally provoke pain. Dynamic mechanical allodynia was assessed using a set of 3 light tactile stimulators as moving innocuous stimuli.~Each participant gave numerical pain ratings for each of 15 stimuli at the affected side.~Mechanical pain sensitivity was assessed using a set of 7 weighted pinprick stimuli to obtain the stimulus-response function for pinprick-evoked pain.~The participant gave a numerical pain ratings for each of 35 pinprick stimuli at the affected site.~Dynamic mechanical allodynia and mechanical pain sensitivity was calculated as the geometric mean of all numerical ratings. The values obtained on Day -2 and -1 were taken as the baseline and values on Day 6 and 7 were taken as the end of treatment. A negative change indicates an improvement on the 0 (no pain) to 100 point scale, where 100 indicates the worst imaginable pain." (NCT01485094)
Timeframe: Day 7 (end of double blind treatment)

,,
Interventionunits on a scale (Mean)
Mechanical pain sensitivity (Affected side)Dynamic mechanical allodynia (Affected side)
GRT6010-14.60-13.81
Matching Placebo-12.26-11.12
Pregabalin-13.86-9.63

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Assessment of Responder Rates

"The assessment was performed on Day 7.~The percentage of change from baseline (Day -3 to Day -1, i.e. the 3 days in the days prior to first dose) in the daily ongoing pain intensity was calculated at Day 7.~The percentage of change from baseline in the daily ongoing pain intensity was calculated at Day 7 as follows:~% change = (Baseline Pain Intensity - Daily pain intensity at treatment visit) / Baseline Pain Intensity × 100~The threshold values represent an improvement in ongoing pain intensity greater than 20, 30, 40, 50, 60, 70, 80 or 90% as per calculation.~Participants who showed a worsening in their daily pain intensity or who prematurely discontinued the trial were regarded as non-responders in terms of the respective treatment." (NCT01485094)
Timeframe: Day 7 (end of double blind treatment)

,,
Interventionparticipants (Number)
20% Threshold30% Threshold40% Threshold50% Threshold60% Threshold70% Threshold80% Threshold90% Threshold
GRT60101410974100
Matching Placebo1211854431
Pregabalin138644222

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Difference Between Baseline and End-of-double-blind Treatment Ongoing Pain Intensity Scores

The baseline pain intensity score was calculated as a mean of pain intensity scores during the Baseline Period (from Day -3 to Day -1). The ongoing pain intensity data from Day-3 to Day 7 was used. For the analysis, only pain scores on days where participants received study drug were considered. The primary efficacy analysis of the ongoing pain intensity score were analyzed in a Bayesian framework, via a mono exponential decay model, with the baseline Numeric Rating Score (NRS) as intercept. Considering the inclusion criteria of baseline pain intensity being in the range from 4 to 9, the range in ongoing pain intensity difference between baseline and end-of-double-blind treatment can be from 6 (worst possible value) to -9 (best possible value). A negative value indicates improvement whilst on the treatment. (NCT01485094)
Timeframe: Baseline; Day 7 (end of double blind treatment)

Interventionunits on a scale (Mean)
Matching Placebo-2.55
GRT6010-2.30
Pregabalin-2.33

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The Difference Between Baseline and End-of-double-blind Treatment Brush-evoked Pain Intensity Scores

"The difference between baseline and end-of-double-blind treatment brush-evoked pain intensity scores compared to placebo on a 0-100 point NRS (measured as part of the dynamic mechanical allodynia assessments).~Each participant rated each brush-evoked pain intensity on a 0 to 100 point Numerical Pain Rating Scale, with 0 indicating 'No Pain' and 100 indicating 'most intense pain imaginable'. Lower values compared to an individual subject's baseline are an improvement in symptoms.~The baseline brush-evoked pain intensity score was defined as the average of the geometric mean of all of the values obtained on Day -2 and Day -1, and compared with the scores obtained on day 6 and 7.~For the analysis, only pain scores on days where participants received study drug were considered.~A negative change indicates a decrease in brush-evoked pain intensity from baseline." (NCT01485094)
Timeframe: Baseline and day 7 (end of double blind treatment)

Interventionunits on a scale (Mean)
Matching Placebo-11.17
GRT6010-14.31
Pregabalin-9.79

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Change in Area of Static Allodynia and Dynamic Allodynia From Baseline

"Allodynia is pain due to a stimulus that does not normally provoke pain. To measure the areas of dynamic and static allodynia, a point lying in the center of the area of maximum pain was marked at baseline (Day -2 and -1). From the baseline point, 8 radii were drawn.~The area of dynamic allodynia was determined by gently stroking the skin with a standardized brush along the lines. The participant was asked to report when the sensation became unpleasant.~The area of static allodynia was determined by a 128 mN (millinewton) pinprick stimulus along the lines of the 8 radii while asking the subject to report when the sensation became unpleasant.~The area was calculated from the summing of the 8 triangles that are generated from the points along each of the 8 radii at which unpleasantness was reported. The larger the area in square centimeters the more allodynia. A reduction in the area of allodynia indicates improvement." (NCT01485094)
Timeframe: Baseline; Day 7 (end of double blind treatment)

,,
Interventionsquare centimeters (Mean)
Dynamic allodynia area at baselineChange in area of dynamic allodyniaStatic allodynia area at baselineChange in area of static allodynia
GRT6010152.11-73.98286.21-137.47
Matching Placebo154.7911.36352.97-58.01
Pregabalin98.4-32.78244.75-95.16

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Change in Neuropathic Pain Symptom Inventory Scores on Day 7 From Baseline (Day -1)

"The Neuropathic Pain Symptom Inventory (NPSI) Score is an assessment of neuropathic pain symptoms.~A participant answered 10 questions on an 11-point scale 0 (no pain) to 10 (most intense pain imaginable).~The total NPSI score is the sum of all ten responses and ranges between 0 and 100.~The baseline score and the mean NPSI change is reported over the double-blind treatment period. A negative mean change in score on Day 7 indicates an improvement on this 0 to 100 point scale from baseline for the total score.~For pain descriptions burning, pressing, paroxysmal (pain like electric shocks or stabbing), evoked (due to touch) and paresthesia (sensation that is not unpleasant) or dysesthesia (unpleasant) subscores a negative mean change indicate an improvement on the 11 point scale. A participant will score 10 to indicates the worst imaginable symptom, e.g. worst burning imaginable. A participant will score 0 if there is no burning, i.e. the symptom is absent." (NCT01485094)
Timeframe: Day -1; Day 7 (end of double blind treatment)

,,
Interventionunits on a scale (Mean)
Day -1 Baseline NPSI total scoreDay 7 Change in NPSI total scoreDay -1 Baseline Burning spontaneous painDay 7 Change in burning spontaneous painDay -1 Baseline pressing spontaneous painDay 7 Change in pressing spontaneous painDay -1 Baseline paroxysmal painDay 7 Change in paroxysmal painDay -1 Baseline evoked painDay 7 Change in evoked painDay -1 Baseline paresthesia or dysesthesiaDay 7 Change in paresthesia or dysesthesia
GRT601058.05-18.955.68-1.584.97-1.686.03-1.825.83-2.036.45-2.13
Matching Placebo59.11-23.895.79-2.534.47-1.746.39-2.926.02-2.166.76-2.79
Pregabalin55.84-16.795.63-2.04.45-0.586.76-2.265.67-2.055.39-1.47

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Change in painDETECT Grading From Baseline (Day -1) to End of Double-blind Treatment (Day 7)

"The painDETECT questionnaire was used to determine the possibility of the presence of a neuropathic pain component. It is a participant completed questionnaire. A total score is calculated between 0 and 38 for each participant. Participants with a score between 0 and 12 are graded as negative and having no neuropathic pain component. Scores between 19 and 38 result in a positive grading, in other words having presence of neuropathic component. Values from 13 to 18 result in participants being graded as having an unclear neuropathic component to their pain. The painDETECT questionnaire was first administered on Day-1 (baseline). The data reported is for before treatment start (Day -1) and the change from baseline on Day 7 (end of the double-blind period)." (NCT01485094)
Timeframe: Day 7 (end of double blind treatment)

,,
Interventionparticipants (Number)
Day -1 no neuropathic pain componentDay 7 no neuropathic pain componentDay -1 Unclear neuropathic componentDay 7 Unclear neuropathic componentDay -1 Presence of neuropathic componentDay 7 Presence of neuropathic component
GRT601002141812
Matching Placebo01241712
Pregabalin02531412

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Daily Current Pain Intensity

"Participants recorded their current pain intensity score 3 times a day, using a 0 -10 (11 point) Numeric Rating Scale where a rating of 0 corresponded to No Pain and a rating of 10 to Pain as bad as you can imagine.~The daily current pain intensity reported was derived as the mean of the 3 current pain intensity assessments taken on the day from all participants in the treatment group.~The lower the value on the 11 point scale the less pain was reported on a treatment." (NCT01485094)
Timeframe: Baseline; Day 10

,,
Interventionunits on a scale (Mean)
BaselineDay 1Day 2Day 3Day 4Day 5Day 6Day 7Day 8Day 9Day 10
GRT60106.525.745.194.684.754.614.163.843.764.284.35
Matching Placebo6.324.824.494.464.093.824.133.643.684.214.06
Pregabalin6.135.374.584.614.473.954.083.633.854.054.15

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Difference in Leeds Sleep Evaluation Questionnaire After 7 Days of Treatment

"On the last day of the double-blind treatment period sleep was evaluated using the Leeds sleep evaluation questionnaire. This questionnaire has 10 self-rating 100 mm line analogue questions concerning sleep and early morning behavior. The higher the score, i.e. the closer the value is to 100 the worse the rating by the participant.~The 10 responses are grouped into 4 subscores:~The ease of getting to sleep.~The perceived quality of sleep.~The ease of awakening from sleep.~The integrity of behavior following wakefulness." (NCT01485094)
Timeframe: Day 7

,,
Interventionunits on a scale (Mean)
Day 7 ease of getting to sleepDay 7 perceived quality of sleepDay 7 ease of awakening from sleepDay 7 integrity of behavior following wakefulness
GRT601041.2542.3348.2944.88
Matching Placebo36.3742.6944.9446.91
Pregabalin32.5737.0646.5644.35

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Least Square Means of Average Daily Pain Score by Week Mixed Effects Model for Repeated Measures (MMRM) Following Treatment With DS-5565 Compared to Pregabalin and Placebo

Average daily pain score (ADPS) is a participant-reported instrument that measures pain intensity using an 11-point numeric rating scale (NRS) where 0 is defined as no pain and 10 is defined as worst possible pain. Higher scores indicate worse pain intensity level. The least square means of ADPS (assessed by MMRM) are reported where a negative value is considered an improvement in pain intensity. A minimally meaningful effect was defined as a decrease of at least 1.0 point [scale of 0 to 10] versus placebo). (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

,,,,,,
Interventionunits on a scale (Least Squares Mean)
Week 1Week 2Week 3Week 4End of treatment
DS-5565 10 mg BID-1.26-1.72-2.38-2.68-2.87
DS-5565 10 mg QD-0.95-1.56-1.78-2.41-2.40
DS-5565 15 mg BID-1.40-2.33-2.55-2.72-2.79
DS-5565 15 mg QD-1.13-1.76-2.30-2.46-2.90
DS-5565 5mg QD-0.68-1.38-1.62-2.01-2.05
Placebo-0.55-1.12-1.47-1.67-1.91
Pregabalin 150 mg BID-1.10-1.75-1.79-1.83-1.87

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Mean Change From Baseline to Week 5 in Average Daily Pain Score (ADPS) Following Treatment With DS-5565 Compared to Pregabalin and Placebo

Average daily pain score (ADPS) is a participant-reported instrument that measures pain intensity using an 11-point numeric rating scale (NRS) where 0 is defined as no pain and 10 is defined as worst possible pain. Higher scores indicate worse pain intensity level. The change from baseline to Week 5 is reported where a negative value is considered an improvement in pain intensity. A minimally meaningful effect was defined as a decrease of at least 1.0 point [scale of 0 to 10] versus placebo). (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

Interventionunits on a scale (Mean)
Placebo-1.86
Pregabalin 150 mg BID-1.79
DS-5565 5mg QD-2.04
DS-5565 10 mg QD-2.32
DS-5565 15 mg QD-2.66
DS-5565 10 mg BID-2.64
DS-5565 15 mg BID-2.79

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Patient Global Impression of Change at End-of-Treatment or Early Termination Following Treatment With DS-5565 Compared to Pregabalin and Placebo

Patient Global Impression of Change (PGIC) has a range of 7 possible responses for overall status since start of the study, where 0 was defined as 'Very much improved' and 7 was defined as 'Very much worse'. Lower scores indicate a better outcome. PGIC was analyzed based on the following definitions: Participant's overall status was minimally improved or better (ie, score ≤3) or Participant's overall status was much improved or better (ie, score ≤ 2). (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

InterventionParticipants (Count of Participants)
Overall status is much improved or better (score ≤2)72051793Overall status is much improved or better (score ≤2)72051794Overall status is much improved or better (score ≤2)72051795Overall status is much improved or better (score ≤2)72051799Overall status is much improved or better (score ≤2)72051796Overall status is much improved or better (score ≤2)72051797Overall status is much improved or better (score ≤2)72051798Overall status is minimally improved or better (score ≤3)72051793Overall status is minimally improved or better (score ≤3)72051794Overall status is minimally improved or better (score ≤3)72051795Overall status is minimally improved or better (score ≤3)72051798Overall status is minimally improved or better (score ≤3)72051796Overall status is minimally improved or better (score ≤3)72051797Overall status is minimally improved or better (score ≤3)72051799
NoYes
Placebo33
Pregabalin 150 mg BID19
DS-5565 5mg QD27
DS-5565 10 mg QD30
DS-5565 15 mg QD24
DS-5565 10 mg BID25
DS-5565 15 mg BID28
Placebo73
Pregabalin 150 mg BID31
DS-5565 5mg QD28
DS-5565 10 mg QD25
DS-5565 15 mg QD26
DS-5565 10 mg BID27
Placebo66
Pregabalin 150 mg BID33
DS-5565 5mg QD45
DS-5565 10 mg QD46
DS-5565 15 mg QD37
DS-5565 10 mg BID38
DS-5565 15 mg BID44
Placebo40
Pregabalin 150 mg BID17
DS-5565 5mg QD10
DS-5565 10 mg QD9
DS-5565 15 mg QD13
DS-5565 10 mg BID14
DS-5565 15 mg BID12

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Average Daily Pain Score Responder Rates Based on ≥30% and ≥50% Decrease From Baseline at Endpoint) Following Treatment With DS-5565 or Placebo Compared to Pregabalin

Average daily pain score (ADPS) is a participant-reported instrument that measures pain intensity using an 11-point numeric rating scale (NRS) where 0 is defined as no pain and 10 is defined as worst possible pain. Higher scores indicate worse pain intensity level. (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

InterventionParticipants (Count of Participants)
Responder rate: ≥30% decrease from baseline72051795Responder rate: ≥30% decrease from baseline72051796Responder rate: ≥30% decrease from baseline72051797Responder rate: ≥30% decrease from baseline72051798Responder rate: ≥30% decrease from baseline72051799Responder rate: ≥30% decrease from baseline72051793Responder rate: ≥30% decrease from baseline72051794Responder Rate: ≥50% decrease from baseline72051794Responder Rate: ≥50% decrease from baseline72051795Responder Rate: ≥50% decrease from baseline72051796Responder Rate: ≥50% decrease from baseline72051797Responder Rate: ≥50% decrease from baseline72051798Responder Rate: ≥50% decrease from baseline72051793Responder Rate: ≥50% decrease from baseline72051799
YesNo
Placebo45
Pregabalin 150 mg BID19
DS-5565 5mg QD22
DS-5565 10 mg QD32
DS-5565 15 mg QD34
DS-5565 10 mg BID34
Placebo63
Pregabalin 150 mg BID31
DS-5565 5mg QD33
DS-5565 10 mg QD24
DS-5565 15 mg QD17
DS-5565 10 mg BID22
DS-5565 15 mg BID25
Placebo26
Pregabalin 150 mg BID14
DS-5565 5mg QD11
DS-5565 10 mg QD16
DS-5565 15 mg QD20
DS-5565 10 mg BID24
Placebo82
Pregabalin 150 mg BID36
DS-5565 5mg QD44
DS-5565 10 mg QD40
DS-5565 15 mg QD31
DS-5565 10 mg BID32
DS-5565 15 mg BID32

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Short-Form McGill Pain Questionnaire (SF-MPQ) Total Score and Visual Analog Scale Change From Baseline to Endpoint Following Treatment With DS-5565 Compared to Pregabalin and Placebo

The SF-MPQ sensory score is the sum of 11 pain descriptors each scored from 0 to 3: throbbing, shooting, stabbing, sharp cramping, gnawing, hot-burning, aching, heavy, tender, and splitting. Thus, the SF-MPQ sensory score ranges from 0 to 33, where lower scores indicate a better outcome. The SF-MPQ affective score is the sum of four pain descriptors each scored from 0 to 3: tiring-exhausting, sickening, fearful, and punishing cruel. Thus, SF-MPQ affective score ranges from 0 to 12, where lower scores indicate a better outcome. The SF-MPQ total score comprises the sum of the sensory and affective scores. The SF-MPQ VAS ranges from 0 (no pain) to 100 (worst possible pain), where lower scores indicate a better outcome. The change from baseline to Week 5 in SF-MPQ total score and VAS are being reported. The greater the negative value, the greater the improvement in total score (sensory and affective scores) and VAS pain. (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

,,,,,,
Interventionunits on a scale (Mean)
Total scoreVAS pain
DS-5565 10 mg BID-7.96-25.45
DS-5565 10 mg QD-11.16-28.56
DS-5565 15 mg BID-10.79-32.82
DS-5565 15 mg QD-8.71-28.73
DS-5565 5mg QD-10.36-27.40
Placebo-8.39-20.84
Pregabalin 150 mg BID-7.92-19.28

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Short-Form McGill Pain Questionnaire (SF-MPQ) Sensory and Affective Scores Change From Baseline to Endpoint Following Treatment With DS-5565 Compared to Pregabalin and Placebo

"The SF-MPQ sensory score is the sum of 11 pain descriptors each scored from 0 to 3:~throbbing, shooting, stabbing, sharp cramping, gnawing, hot-burning, aching, heavy, tender, and splitting. Thus, the SF-MPQ sensory score ranges from 0 to 33, where lower scores indicate a better outcome. The SF-MPQ affective score is the sum of four pain descriptors each scored from 0 to 3: tiring-exhausting, sickening, fearful, and punishing cruel. Thus, SF-MPQ affective score ranges from 0 to 12, where lower scores indicate a better outcome. The change from baseline to Week 5 in SF-MPQ sensory and affective scores are being reported. The greater the negative value, the greater the improvement in sensory and affective scores." (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

,,,,,,
Interventionunits on a scale (Mean)
Sensory scoreAffective score
DS-5565 10 mg BID-6.56-1.40
DS-5565 10 mg QD-8.73-2.44
DS-5565 15 mg BID-8.55-2.23
DS-5565 15 mg QD-6.86-1.84
DS-5565 5mg QD-8.02-2.35
Placebo-6.29-2.10
Pregabalin 150 mg BID-5.94-1.98

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Mean Change From Baseline to Endpoint of Modified BPI Subscales, Worst, Least and Average Pain Intensity, Following Treatment With DS-5565 Compared to Pregabalin and Placebo

The Modified Brief Pain Inventory (BPI) includes Interference with Daily Functions Subscale, Worst Pain Intensity, Least Pain Intensity, Average Pain Intensity, Pain Right Now, and Relief From Pain. The range of worst pain intensity in the last 24 hours is 0-10, where lower scores indicate a better outcome. The range of least pain intensity in the last 24 hours is 0-10, where lower scores indicate a better outcome. The range of average pain intensity in the last 24 hours is 0-10, where lower scores indicate a better outcome. The change from baseline to Week 5 in Modified Brief Pain Inventory is being reported. The greater the negative value, the greater the improvement in worst, least, and average pain intensity. (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

,,,,,,
Interventionunits on a scale (Mean)
Worst Pain IntensityLeast Pain IntensityAverage Pain Intensity
DS-5565 10 mg BID-2.3-1.0-1.8
DS-5565 10 mg QD-2.6-1.7-2.3
DS-5565 15 mg BID-3.0-1.9-2.3
DS-5565 15 mg QD-2.7-2.0-2.0
DS-5565 5mg QD-2.0-1.6-1.7
Placebo-2.1-1.3-1.7
Pregabalin 150 mg BID-1.9-0.9-1.5

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Mean Change From Baseline to End-of-Treatment in Average Daily Sleep Interference Score Following Treatment With DS-5565 Compared to Pregabalin and Placebo

"Average Daily Sleep Interference Score (ADSIS) is the weekly average of patient-reported sleep interference (rated every morning on a numerical scale of 0 = pain did not interfere with sleep to 10 = pain completely interfered with sleep over the past 24 h), where higher scores indicate worse outcome.The change from baseline to Week 5 in ADSIS is being reported as the average of the last 7 available daily scores. The greater the negative value, the greater the improvement in sleep." (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

Interventionunits on a scale (Mean)
Placebo-1.98
Pregabalin 150 mg BID-1.94
DS-5565 5mg QD-2.19
DS-5565 10 mg QD-2.35
DS-5565 15 mg QD-2.97
DS-5565 10 mg BID-2.52
DS-5565 15 mg BID-2.69

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Mean Change From Baseline to Endpoint of Modified BPI Subscale, Pain Right Now, Following Treatment With DS-5565 Compared to Pregabalin and Placebo

The Modified Brief Pain Inventory (BPI) includes Interference with Daily Functions Subscale, Worst Pain Intensity, Least Pain Intensity, Average Pain Intensity, Pain Right Now, and Relief From Pain. The range of pain right now is 0-10, where lower scores indicate a better outcome. The change from baseline to Week 5 in Modified Brief Pain Inventory is being reported. For pain right now, the greater the negative value, the greater the improvement. (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

Interventionunits on a scale (Mean)
Placebo-2.0
Pregabalin 150 mg BID-1.8
DS-5565 5mg QD-2.0
DS-5565 10 mg QD-2.5
DS-5565 15 mg QD-2.5
DS-5565 10 mg BID-2.0
DS-5565 15 mg BID-2.5

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Mean Change From Baseline to Endpoint of Modified BPI Subscale, Relief From Pain, Following Treatment With DS-5565 Compared to Pregabalin and Placebo

The Modified Brief Pain Inventory (BPI) includes Interference with Daily Functions Subscale, Worst Pain Intensity, Least Pain Intensity, Average Pain Intensity, Pain Right Now, and Relief From Pain. The range of % relief from pain is 0-100, where higher scores indicate a better outcome. The change from baseline to Week 5 in Modified Brief Pain Inventory is being reported. For relief from pain, the higher the score, the greater the improvement in pain relief. (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

Interventionscore on a scale (Mean)
Placebo26.4
Pregabalin 150 mg BID20.4
DS-5565 5mg QD31.5
DS-5565 10 mg QD32.0
DS-5565 15 mg QD23.0
DS-5565 10 mg BID35.3
DS-5565 15 mg BID33.0

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Mean Change From Baseline to Endpoint of Modified Brief Pain Inventory (BPI) Subscale, Interference With Daily Functions, Following Treatment With DS-5565 Compared to Pregabalin and Placebo

The Modified Brief Pain Inventory (BPI) includes Interference with Daily Functions Subscale, Worst Pain Intensity, Least Pain Intensity, Average Pain Intensity, Pain Right Now, and Relief From Pain. The range of interference subscale is 0-10, where lower scores indicate a better outcome. The change from baseline to Week 5 in Modified Brief Pain Inventory is being reported. The greater the negative value, the greater the improvement in interference with daily functions. (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

Interventionunits on a scale (Mean)
Placebo-1.5
Pregabalin 150 mg BID-1.7
DS-5565 5mg QD-1.6
DS-5565 10 mg QD-2.5
DS-5565 15 mg QD-2.4
DS-5565 10 mg BID-2.1
DS-5565 15 mg BID-2.6

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Short-Form McGill Pain Questionnaire (SF-MPQ) Present Pain Intensity Change From Baseline to Endpoint Following Treatment With DS-5565 Compared to Pregabalin and Placebo

The SF-MPQ present pain intensity ranges from 0 (no pain) to 5 (excruciating), where lower scores indicate a better outcome. The change from baseline to Week 5 in SF-MPQ present pain intensity is being reported. The greater the negative value, the greater the improvement in present pain intensity. (NCT01496365)
Timeframe: Baseline up to Week 5 postdose, up to 10 months total follow up

Interventionunits on a scale (Mean)
Placebo-0.85
Pregabalin 150 mg BID-0.84
DS-5565 5mg QD-1.00
DS-5565 10 mg QD-1.04
DS-5565 15 mg QD-0.90
DS-5565 10 mg BID-0.73
DS-5565 15 mg BID-1.02

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Mean Change in Average Daily Pain Score From Baseline Among Participants Who Received DS5565 for Pain Associated With Diabetic Peripheral Neuropathy

The mean change in average daily pain score (ADPS) was measured using a 11-point numeric rating scale (NRS; 0 [no pain] to 10 [worst possible pain]. The rating averaged over a 7-day period and was based on entries in patients' daily pain diaries. Greater mean changes (improvements) in ADPS indicated better outcomes. A minimally meaningful effect was a mean decrease of at least 1.0 point [scale of 0 to 10] versus placebo. (NCT01504412)
Timeframe: Baseline to Week 7 postdose

,,,,
Interventionunits on a scale (Mean)
Baseline to Week 1Baseline to Week 2Baseline to Week 3Baseline to Week 4Baseline to Week 5Baseline to Week 6Baseline to Week 7
DS-5565 10 mg/Day-0.69-1.16-1.32-1.50-1.62-1.79-1.82
DS-5565 20 mg/Day-0.88-1.21-1.50-1.65-1.68-1.78-1.91
DS-5565 30 mg/Day-0.60-1.06-1.35-1.56-1.47-1.68-1.75
Placebo-0.59-0.86-1.05-1.12-1.28-1.41-1.50
Pregabalin-0.71-0.92-1.06-1.29-1.44-1.40-1.55

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Mean Change in Short Form-McGill Pain Questionnaire From Baseline Among Participants Who Received DS5565 for Pain Associated With Diabetic Peripheral Neuropathy

"The Short Form-McGill Pain Questionnaire (SF-MPQ) Visual Analog Scale (VAS) is reported. For VAS, participants rated pain intensity on a 100 mm-long horizontal line, where 0 mm = no pain and 100 mm = worst possible pain.~Greater mean changes (improvements) in SF-MPQ indicated better outcomes." (NCT01504412)
Timeframe: at Week 7 postdose

Interventionunits on a scale (Mean)
Placebo-16.7
Pregabalin-17.2
DS-5565 10 mg/Day-21.9
DS-5565 20 mg/Day-22.1
DS-5565 30 mg/Day-24.2

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Number of Self-administered Puffs of Smoked Cannabis Containing Active THC Concentrations Compared to Placebo Under Controlled Laboratory Conditions

The reinforcing effects of cannabis were determined using a modified progressive ratio procedure in which subjects made 8 choices between puffs of each available cannabis dose and money (US$0.50). The numbered of self-administered puffs of smoked cannabis are measured for each cannabis concentration (0 and 5.9% THC) during active (300 and 450 mg) and placebo (0 mg and 0 mg) pregabalin maintenance. (NCT01511640)
Timeframe: 9 consecutive choice trials (i.e., no time out between trials) per cannabis dose level.

,,,
InterventionCannabis puffs (Mean)
0% placebo Cannabis5.9% active Cannabis
0 mg/Day Pregabalin (Placebo 1)2.675.67
0 mg/Day Pregabalin (Placebo 2)4.004.80
300 mg/Day Pregabalin2.005.75
450 mg/Day Pregabalin3.605.40

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Change From Baseline In Least Pain Level At Month 3 Telephonic Interview

"Pain was assessed on an 11-point NRS where a score of 0 indicated no pain and a score of 10 indicated pain as bad as you can imagine." (NCT01524796)
Timeframe: Baseline, Month 3 Telephonic Interview

InterventionUnits on a scale (Mean)
BaselineChange at Month 3 Telephonic Interview
Pregabalin4.1-1.5

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Change From Baseline In Average Pain Level At Month 3 Telephonic Interview

"Pain was assessed on an 11-point numeric rating scale (NRS) where a score of 0 indicated no pain and a score of 10 indicated pain as bad as you can imagine." (NCT01524796)
Timeframe: Baseline, Month 3 Telephonic Interview

InterventionUnits on a scale (Mean)
BaselineChange at Month 3 Telephonic Interview
Pregabalin6.7-2.2

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Sleep Interference Scale Score

"Sleep Interference was assessed on an 11-point Sleep Numeric Rating Scale (NRS-11) where a score of 0 indicated pain did not interfere with sleep and a score of 10 indicated pain completely interfered with sleep. Here, n signifies Number of participants for Baseline and Month 3 telephone interview whereas n signifies number of observations for Month 1, 2 and 3 because a participant could have had multiple visits during Month 1, 2 and 3 as this was a non-interventional study with no scheduled study visits, except Baseline visit and the Month 3 telephone interview." (NCT01524796)
Timeframe: Baseline, Month 1, 2, 3, Month 3 telephonic interview

InterventionUnits on a scale (Mean)
Baseline (n = 71)Month 1 (n= 58)Month 2 (n= 37)Month 3 (n= 52)Month 3 telephonic interview (n= 86)
Pregabalin5.34.24.04.32.3

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Pregabalin Dose

"Here, n signifies Number of participants for Baseline and Month 3 telephone interview whereas n signifies number of observations for Month 1, 2 and 3 because a participant could have had multiple visits during Month 1, 2 and 3 as this was a non-interventional study with no scheduled study visits, except Baseline visit and the Month 3 telephone interview." (NCT01524796)
Timeframe: After Baseline Visit; Prior to Month 1, 2, 3, Month 3 Telephonic Interview; After Month 1, 2, 3, Month 3 Telephonic Interview

InterventionMilligram (mg) per day (Mean)
Dose Prior To Visit: Month 1 (n= 64)Dose Prior To Visit: Month 2 (n= 48)Dose Prior To Visit: Month 3 (n= 48)Dose Prior To Month 3 telephonic interview (n=86)Dose After Visit: Baseline (n=84)Dose After Visit: Month 1 (n= 64)Dose After Visit: Month 2 (n= 48)Dose After Visit: Month 3 (n= 48)
Pregabalin107.4123.4164.6240.781.5148.4145.3169.3

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Number of Participants With Categorical Scores On Patient Global Impression of Change (PGI-C)

PGIC: participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse). Number of participants in each category are reported. (NCT01524796)
Timeframe: Month 3 telephonic interview

InterventionParticipants (Number)
Very Much ImprovedMuch ImprovedMinimally ImprovedNo ChangeMinimally WorseMuch WorseVery Much Worse
Pregabalin1835264300

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Number of Participants Using Other Pharmacological Pain Treatments For Peripheral Neuropathic Pain Before Baseline, Month 1, 2, 3 Visit

Pharmacological treatments included tricyclic antidepressants (TCA), gabapentin, non-steroidal anti-inflammatory drugs (NSAIDs), weak opioids, strong opioids, serotonin-norepinephrine reuptake inhibitors (SNRIs), lidocaine or capsaicin patch (L/C) and other (parcetamol containing drugs, xylocain gel or kinin). Participants may have used more than one pharmacological pain treatments and may be presented in more than 1 category. (NCT01524796)
Timeframe: Before Baseline, Month 1, 2, 3 Visit

InterventionParticipants (Number)
Before Baseline Visit: No drug treatment (n= 143)Before Baseline Visit: TCA (n= 143)Before Baseline Visit: Gabapentin (n= 143)Before Baseline Visit: NSAIDs (n= 143)Before Baseline Visit: Weak Opioids (n= 143)Before Baseline Visit: Strong Opioids (n= 143)Before Baseline Visit: SNRIs (n= 143)Before Baseline Visit: L/C (n= 143)Before Baseline Visit: Other (n= 143)Before Month 1 Visit: No drug treatment (n= 71)Before Month 1 Visit: TCA (n= 71)Before Month 1 Visit: Gabapentin (n= 71)Before Month 1 Visit: NSAIDs (n= 71)Before Month 1 Visit: Weak Opioids (n= 71)Before Month 1 Visit: Strong Opioids (n= 71)Before Month 1 Visit: SNRIs (n= 71)Before Month 1 Visit: L/C (n= 71)Before Month 1 Visit: Other (n= 71)Before Month 2 Visit: No drug treatment (n= 60)Before Month 2 Visit: TCA (n= 60)Before Month 2 Visit: Gabapentin (n= 60)Before Month 2 Visit: NSAIDs (n= 60)Before Month 2 Visit: Weak Opioids (n= 60)Before Month 2 Visit: Strong Opioids (n= 60)Before Month 2 Visit: SNRIs (n= 60)Before Month 2 Visit: L/C (n= 60)Before Month 2 Visit: Other (n= 60)Before Month 3 Visit: No drug treatment (n= 58)Before Month 3 Visit: TCA (n= 58)Before Month 3 Visit: Gabapentin (n= 58)Before Month 3 Visit: NSAIDs (n= 58)Before Month 3 Visit: Weak Opioids (n= 58)Before Month 3 Visit: Strong Opioids (n= 58)Before Month 3 Visit: SNRIs (n= 58)Before Month 3 Visit: L/C (n= 58)Before Month 3 Visit: Other (n= 58)
Pregabalin51433253518616231125171101114132414102011213041612001

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Work Productivity and Activity Impairment (WPAI) Questionnaire

"WPAI questionnaire assess work productivity and impairment. It is a patient-rated, six-item questionnaire regarding current employment, hours missed and actually worked, and degree to which a specified health problem affected work productivity and regular activities over the past seven days. Subscale scores include Percent work time missed due to pain (PWP), Percent overall work impairment (PWI), Percent work productivity impairment due to pain (PWPI), Percent overall activity impairment (PAI). Each subscale score is expressed as an impairment percentage (0-100) where higher numbers indicate greater impairment and less productivity. Here, n signifies Number of participants for Baseline whereas n signifies number of observations for Month 1, 2 and 3 because a participant could have had multiple visits during Month 1, 2 and 3 as this was a non-interventional study with no scheduled study visits, except Baseline visit and the Month 3 telephone interview." (NCT01524796)
Timeframe: Baseline, Month 1, 2, 3

InterventionUnits on a scale (Mean)
PWP Baseline (n= 25)PWP Month 1 (n= 25)PWP Month 2 (n=12)PWP Month 3 (n= 18)PWI Baseline (n= 23)PWI Month 1 (n= 24)PWI Month 2 (n=11)PWI Month 3 (n= 15)PWPI Baseline (n= 25)PWPI Month 1 (n= 25)PWPI Month 2 (n=12)PWPI Month 3 (n=19)PAI Baseline (n= 29)PAI Month 1 (n= 27)PAI Month 2 (n=13)PAI Month 3 (n= 23)
Pregabalin28.428.717.829.970.058.248.156.363.252.045.848.968.363.755.453.0

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Number of Participants Using Other Pharmacological Pain Treatments For Peripheral Neuropathic Pain After Baseline Visit (Concomitant Medication)

Pharmacological treatments included tricyclic antidepressants (TCA), gabapentin, non-steroidal anti-inflammatory drugs (NSAIDs), weak opioids, strong opioids, serotonin-norepinephrine reuptake inhibitors (SNRIs), lidocaine or capsaicin patch (L/C) and other (parcetamol containing drugs, xylocain gel or kinin). Participants may have used more than one pharmacological pain treatments and may be presented in more than 1 category. (NCT01524796)
Timeframe: After Baseline, Month 1, 2, 3 visit

InterventionParticipants (Number)
After Baseline Visit: No drug treatment (n= 112)After Baseline Visit: TCA (n= 112)After Baseline Visit: Gabapentin (n= 112)After Baseline Visit: NSAIDs (n= 112)After Baseline Visit: Weak Opioids (n= 112)After Baseline Visit: Strong Opioids (n= 112)After Baseline Visit: SNRIs (n= 112)After Baseline Visit: L/C (n= 112)After Baseline Visit: Other (n= 112)After Month 1 Visit: No drug treatment (n= 70)After Month 1 Visit: TCA (n= 70)After Month 1 Visit: Gabapentin (n= 70)After Baseline Visit: NSAIDs (n= 70)After Month 1 Visit: Weak Opioids (n= 70)After Month 1 Visit: Strong Opioids (n= 70)After Month 1 Visit: SNRIs (n= 70)After Month 1 Visit: L/C (n= 70)After Month 1 Visit: Other (n= 70)After Month 2 Visit: No drug treatment (n= 60)After Month 2 Visit: TCA (n= 60)After Month 2 Visit: Gabapentin (n= 60)After Month 2 Visit: NSAIDs (n= 60)After Month 2 Visit: Weak Opioids (n= 60)After Month 2 Visit: Strong Opioids (n= 60)After Month 2 Visit: SNRIs (n= 60)After Month 2 Visit: L/C (n= 60)After Month 2 Visit: Other (n= 60)After Month 3 Visit: No drug treatment (n= 58)After Month 3 Visit: TCA (n= 58)After Month 3 Visit: Gabapentin (n= 58)After Baseline Visit: NSAIDs (n= 58)After Month 3 Visit: Weak Opioids (n= 58)After Month 3 Visit: Strong Opioids (n= 58)After Month 3 Visit: SNRIs (n= 58)After Month 3 Visit: L/C (n= 58)After Month 3 Visit: Other (n= 58)
Pregabalin2512616241750723140115150111315141692001313031513001

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Change From Baseline In Worst Pain Level At Month 3 Telephonic Interview

"Pain was assessed on an 11-point NRS where a score of 0 indicated no pain and a score of 10 indicated pain as bad as you can imagine." (NCT01524796)
Timeframe: Baseline, Month 3 Telephonic Interview

InterventionUnits on a scale (Mean)
BaselineChange at Month 3 Telephonic Interview
Pregabalin8.4-2.1

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The Worst Pain Reported at the End of the Week for the Overall Week (Item 2 Appendix V)

"The worst pain reported at the end of the week for the overall week (New aches and pains at their worst over the past week) are reported below. This question was only supposed to be answered by patients who responded yes to the first question. Currently, all responses are included, regardless of whether the patient should've responded or not. The worst pain reported at the end of the week for the overall week (item 2 appendix V: Please rate any aches/pains that you have by circling ONE number that best describes your aches/pains at its worst over the last week.) Higher scores represent more pain (0: No aches or pains -10: Aches or pains as bad as can be)." (NCT01637077)
Timeframe: From treatment initiation to 6 days following treatment initiation; up to 7 days

Interventionunits on a scale (Mean)
Arm I (Pregabalin)2.4
Arm II (Placebo)4.7

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The Percentage of Patients Taking Opioid Medications

The percentage of patients taking opioid medications are reported below by arm. (NCT01637077)
Timeframe: From treatment initiation to 6 months.

Interventionpercentage of patients (Number)
Arm I (Pregabalin)15.8
Arm II (Placebo)18.2

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Area Under the Curve Per Assessment (aAUCpa) of Worst, Average and Least Pain (Items 1-3 Appendix IV) for the First Cycle of Treatment.

"Average Area Under the Curve per assessment (aAUCpa) of worst, average, and least pain (items 1-3 app. IV; Please rate any aches/pains that are NEW since your last dose of paclitaxel, and that you think might be related to your chemotherapy treatment by circling ONE number that best describes your aches/pains at its WORST in the last 24 hours., Please rate the same aches/pains by circling the ONE number that best describes your aches/pains at its LEAST in the last 24 hours., Please rate the same aches/pain by circling the ONE number that best describes your aches/pains on the AVERAGE in the last 24 hours.) for the first cycle of treatment. Scores are reported on a 0-100 scale, where 100=better outcome QOL. The aAUCpa is the average of each AUC between each sequential assessment from treatment-initiation to the day-6 assessment." (NCT01637077)
Timeframe: From treatment initiation to 6 days following treatment initiation; up to 7 days

,
Interventionaverage(subscale value*assessment) (Mean)
Worst pain over the past 24 hoursAverage pain over the past 24 hoursLeast pain over the past 24 hours
Arm I (Pregabalin)80.782.882.6
Arm II (Placebo)82.686.891.3

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Maximum of the Average Pain Scores (Item 3, Appendix IV) Over the Period From Treatment Initiation to Day 7 (for Cycle 1).

"Maximum of average pain scores over 6 days following initiation of treatment. Average pain over the first 6 days following treatment initiation. Maximum of the average pain scores (item 3, appendix IV; Please rate the same aches/pain by circling the ONE number that best describes your aches/pains on the AVERAGE in the last 24 hours.) over the period from treatment initiation to day 7 (for cycle 1). Higher scores represent more pain (0: No aches or pains -10: Aches or pains as bad as can be)." (NCT01637077)
Timeframe: From treatment initiation to 6 days following treatment initiation; up to 7 days

Interventionunits on a scale (Mean)
Arm I (Pregabalin)2.6
Arm II (Placebo)2.2

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The Percentage of Patients Who Report the Development of New Aches/Pains That They Attribute to Paclitaxel

The percentage of patients who report the development of new aches/pains that they attribute to paclitaxel in the first week of chemotherapy are reported by arm below. (NCT01637077)
Timeframe: From treatment initiation to 6 days following treatment initiation; up to 7 days

Interventionpercentage of patients (Number)
Arm I (Pregabalin)23.5
Arm II (Placebo)59.1

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The Percentage of Patients Who Report, at Week's End, Using Non-prescription Pain Medications

"The percentage of patients who report, at week's end, using non-prescription pain medications (Have you used non-prescription meds like aspirin, Tylenol, Motrin, Ibuprofen, or Advil over the past week?) are reported by arm below. This question was only supposed to be answered by patients who responded yes to the first question. Currently, all responses are included, regardless of whether the patient should've responded or not." (NCT01637077)
Timeframe: From treatment initiation to 6 days following treatment initiation; up to 7 days

Interventionpercentage of patients (Number)
Arm I (Pregabalin)66.7
Arm II (Placebo)60.

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The Percentage of Patients Who Report, at Week's End, Using Opioids

"The percentage of patients who report, at week's end, using opioids (Have you used opioids like codeine, oxycodone, or morphine for this pain over the past week?) are reported by arm below. This question was only supposed to be answered by patients who responded yes to the first question. Currently, all responses are included, regardless of whether the patient should've responded or not." (NCT01637077)
Timeframe: From treatment initiation to 6 days following treatment initiation; up to 7 days

Interventionpercentage of patients (Number)
Arm I (Pregabalin)0
Arm II (Placebo)26.7

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The Percentage of Patients Who Use Non-prescription Pain Medications

The percentage of patients who use non-prescription pain medications are reported by arm below. (NCT01637077)
Timeframe: From treatment initiation to 6 months.

Interventionpercentage of patients (Number)
Arm I (Pregabalin)52.6
Arm II (Placebo)50

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Worst of the Pain Scores for the Week Following the First Cycle of Paclitaxel Administration, Paclitaxel-associated Acute Pain Syndrome (P-APS) Pain Score

Worst of the pain scores for the week following the first cycle of paclitaxel administration, as measured by a question on the daily post-paclitaxel questionnaire. Worst pain over the first 6 days following treatment initiation. Higher scores represent more pain (0: No aches or pains -10: Aches or pains as bad as can be). (NCT01637077)
Timeframe: From treatment initiation to 6 days following treatment initiation; up to 7 days

Interventionunits on a scale (Mean)
Arm I (Pregabalin)2.6
Arm II (Placebo)3.2

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Area Under the Curve (AUC) of EORTC Sensory, Autonomic, and Motor Neuropathy Subscales

Average Area Under the Curve per assessment (aAUCpa) of EORTC Chemotherapy-Induced Peripheral Neurophathy Module (EORTC QLQ-CIPN20) Sensory, Autonomic, and Motor Neuropathy Subscales. The EORTC CIPN20 scoring algorithm was used for the sensory (items 31-36, 39, 40 and 48), motor (items 37, 38, 41-45, 49), and autonomic (items 46, 47, 50) subscale scores on a 0-100 scale, with higher scores represent fewer symptoms (better QOL). The aAUCpa for each subscale is calculated as the average of each AUC between each sequential assessment from treatment-initiation to the 6-month assessment. For example; for each patient and each subscale, the subscale values at treatment-initiation and assessment-1 are used to calculate an Area Under the Curve (AUC) for that assessment time-period. Then these AUCs for all available assessment time-periods up to 6-months are averaged to yield the aAUCpa per patient per subcale. (NCT01637077)
Timeframe: From treatment initiation to 6 months.

,
Interventionaverage(subscale value*assessment) (Mean)
SensoryAutonomicMotor
Arm I (Pregabalin)88.488.492.0
Arm II (Placebo)84.588.690.2

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Change From Baseline to Endpoint in Quality of Life Using EuroQol (EQ-5D) Health State Profile Scores

A self-administered questionnaire designed to assess health related quality of life in terms of a single index value or utility score. There are 5 dimensions: mobility, self-care, usual activities, pain/ discomfort, and anxiety/ depression. Each dimension is rated on a 3 point response scale and the scores are combined to form a single index value between 0 and 1 with higher scores being more positive (better health status). The EQ-5D was completed by the subject at week-0 and week-15/ET where 30% responder and 50% responder status would be defined for each participants based on the percent change from baseline (week 0/Randomization) to each visit week in mean pain score and participant global impression of change (PGIC). PGIC is a self-administered instrument that measures change in participant's overall status on a scale ranging from 1 (very much improved) to 7 (very much worse). It is based on the Clinical Global Impression of Change CGIC), which is a validated scale. (NCT01701362)
Timeframe: Week 15

,
InterventionUnits on a scale (Least Squares Mean)
MobilitySelf-careUsual activitiesPain/DiscomfortAnxiety/DepressionDolan 1997 Index ScoreDolan 2001 Index Score
Placebo-0.09-0.06-0.13-0.29-0.020.11-0.12
Pregabalin-0.10-0.08-0.12-0.350.010.12-0.13

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Mean Change From Baseline in the Medical Outcomes Study Sleep Scale (MOS-SS) - Sub-domain Score.

"MOS-SS is a self administered measure consisting of twelve items that assess the key constructs of sleep. Instrument scored results in 7 subscales: sleep disturbance, snoring, awaken short of breath or with headache, quantity of sleep, optimal sleep, sleep adequacy, somnolence. Two index measures that assess sleep disturbance was also constructed to provide composite scores.~Sleep disturbance, snoring, somnolence, awaken short of breath, and the 9 items sleep problems index all have score ranges from 0 (no sleep problems) to 100 (greater sleep problems), therefore a negative change indicates improvement.~Sleep adequacy is scored 0 (least sleep adequacy) to 100 (better sleep adequacy), therefore a positive change indicates improvement.~Quantity of sleep is scored 0 (less quantity of sleep) to 24 (greater quantity of sleep), therefore a positive change indicates improvement.~Optimal sleep is scored Yes if average hours of sleep is in range of 7-8 hours." (NCT01701362)
Timeframe: Week 15

,
InterventionUnits on a scale (Least Squares Mean)
Sleep Disturbance Score (N = 257, 245)Sleep Adequancy Score (N=257, 245)Snoring Score (N = 257, 245)Awaken Short of Breath Score (N = 257, 245)Quantity of Sleep Score (hours) (N = 257, 245)Somnolence Score (N = 257, 245)Sleep Problem Index (9) Score (N = 257, 245)Optimal Sleep Score (N = 256, 245)
Placebo-11.248.16-3.27-3.030.26-3.74-8.190.04
Pregabalin-14.7110.13-2.22-3.610.42-1.61-9.860.11

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Change From Baseline in Pain Interference Index (BPI-sf)

"BPI-sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during the 24 hour period prior to evaluation.~It consists of 7 sub-questions that evaluates the level of pain interference with daily functioning on 11-point response scales from 0 (does not interfere) to 10 (completely interferes).~The BPI-sf pain interference index was calculated as average of the seven individual pain interference scores." (NCT01701362)
Timeframe: Week 15

Interventionunits on a scale (Least Squares Mean)
Pregabalin-1.72
Placebo-1.33

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Patient Global Impression of Change (PGIC) at Week 15

A self administered instrument that measures changes in participants' overall status on a scale ranging from 1 (very much improved) to 7 (very much worse). The PGIC is based on the Clinical Global Impression of Change, which is a validated scale. (NCT01701362)
Timeframe: Week 15

,
InterventionParticipants (Number)
Very much improvedMuch improvedMinimally improvedNo changeMinimally worseMuch worseVery much worse
Placebo41796251940
Pregabalin521056134501

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Percentage of Participants in MOS-SS With Optimal Sleep Status.

MOS-SS optimal sleep status analyzed on a scale of four parameters: any improvements, no change, any worsening and not applicable. (NCT01701362)
Timeframe: Week 15

,
InterventionPercentage of participants (Number)
Any ImprovementsNo ChangeAny WorseningNot applicable
Placebo18.560.813.27.5
Pregabalin21.266.16.26.6

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Percentage of Responders to Treatment With Pregabalin Measured as Reduction in Mean Pain Score of ≥30%.

Participants with at least 30% reduction in the mean pain score from baseline to each week. Weekly mean pain NRS scores are derived from the daily pain NRS and calculated as the mean of the available scores in the 7 days. Generally, week 'n' mean pain score is defined as the mean of the 7 daily diary pain ratings from Day 2+7*(n-1) to Day 1+7*n. At least 4 entries within the last 7 days are required to calculate a mean score. Scores range from 0 (no pain) to 10 (worst possible pain), with higher scored indicating increased pain. (NCT01701362)
Timeframe: Week 15

,
InterventionPercentage of participants (Number)
Week 1 (N = 260, 258)Week 2 (N = 254, 244)Week 3 (N = 252, 245)Week 4 (N = 246, 229)Week 5 (N = 241, 226)Week 6 (N = 244, 227)Week 7 (N = 240, 216)Week 8 (N = 236, 213)Week 9 (N = 232, 214)Week 10 (N = 229, 212)Week 11 (N = 231, 211)Week 12 (N = 227, 209)Week 13 (N = 226, 204)Week 14 (N = 223, 208)Week 15 (N = 196, 187)
Placebo5.0420.0830.2034.5038.0541.4143.0646.4847.6647.1751.1852.6354.4154.3358.29
Pregabalin11.9227.1738.8941.8745.6448.7749.5850.4250.8652.8452.3854.6357.0857.4057.65

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Percentage of Responders to Treatment With Pregabalin Measured as Reduction in Mean Pain Score of ≥50%

Participants with at least 50% reduction in the mean pain score from baseline to each week. Weekly mean pain NRS scores are derived from the daily pain NRS and calculated as the mean of the available scores in the 7 days. Generally, week 'n' mean pain score is defined as the mean of the 7 daily diary pain ratings from Day 2+7*(n-1) to Day 1+7*n. At least 4 entries within the last 7 days are required to calculate a mean score. Scores range from 0 (no pain) to 10 (worst possible pain), with higher scored indicating increased pain. (NCT01701362)
Timeframe: Week 15

,
InterventionPercentage of participants (Number)
Week 1 (N = 260, 258)Week 2 (N = 254, 244)Week 3 (N = 252, 245)Week 4 (N = 246, 229)Week 5 (N = 241, 226)Week 6 (N = 244, 227)Week 7 (N= 240, 216)Week 8 (N = 236, 213)Week 9 (N = 232, 214)Week 10 (N = 229, 212)Week 11 (N = 231, 211)Week 12 (N = 227, 209)Week 13 (N = 226, 204)Week 14 (N = 223, 208)Week 15 (N = 196, 187)
Placebo2.336.9713.4717.9019.4722.9122.2227.7026.1726.4225.5926.7927.4529.8134.22
Pregabalin4.6211.4222.6225.2028.2229.5130.4233.0534.0532.7534.2037.8935.8437.6739.80

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Change From Baseline in Pain Severity Index (Brief Pain Inventory-short Form [BPI-sf])

A self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during the 24 hour period prior to evaluation. The BPI-sf consists of 5 questions. Four items measure pain on 11-point response scales from 0 (No Pain) to 10 (Pain as bad as you can imagine). In the above scale, score 0 indicates the better outcome whereas score 10 indicates the worse outcome. (NCT01701362)
Timeframe: Week 15

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.40
Placebo-1.95

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Change From Baseline to Week 15 in Weekly Mean Pain Score

"This is based on the daily pain diary and is defined as the change from baseline to week 15 in mean pain diary score. The Daily Pain Diary consists of an 11-point numeric rating scale (NRS) ranging from 0 (no pain) to 10 (worst possible pain). Subjects describe their pain during the past 24 hours by choosing the appropriate number between 0 and 10." (NCT01701362)
Timeframe: up to Week 15

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.12
Placebo-1.90

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Baseline Mean Pain Score

"This is based on the daily pain dairy and is defined as the baseline mean pain diary score. The Daily Pain Diary consists of an 11-point numeric rating scale (NRS) ranging from 0 (no pain) to 10 (worst possible pain). Subjects describe their pain during the past 24 hours by choosing the appropriate number between 0 and 10." (NCT01701362)
Timeframe: Baseline

Interventionunits on a scale (Mean)
Pregabalin6.41
Placebo6.54

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Baseline Scores in the Medical Outcomes Study Sleep Scale (MOS-SS) - Sub-domain Score.

"MOS-SS is a self administered measure consisting of twelve items that assess the key constructs of sleep. Instrument scored results in 7 subscales: sleep disturbance, snoring, awaken short of breath or with headache, quantity of sleep, optimal sleep, sleep adequacy, somnolence. Two index measures that assess sleep disturbance was also constructed to provide composite scores.~Sleep disturbance, snoring, somnolence, awaken short of breath, and the 9 items sleep problems index all have score ranges from 0 (no sleep problems) to 100 (greater sleep problems), therefore a negative change indicates improvement.~Sleep adequacy is scored 0 (least sleep adequacy) to 100 (better sleep adequacy), therefore a positive change indicates improvement.~Quantity of sleep is scored 0 (less quantity of sleep) to 24 (greater quantity of sleep), therefore a positive change indicates improvement.~Optimal sleep is scored Yes if average hours of sleep is in range of 7-8 hours." (NCT01701362)
Timeframe: Baseline

,
InterventionUnits on a scale (Median)
Sleep Disturbance Score (N = 274, 265)Sleep Adequancy Score (N = 274, 265)Snoring Score (N = 272, 263)Awaken Short of Breath Score (N = 274, 265)Quantity of Sleep Score (hours) (N = 273, 265)Somnolence Score (N = 274, 265)Sleep Problem Index (9) Score (N = 274, 265)Optimal Sleep Score (N = 273, 265)
Placebo43.7540.020.00.06.026.6741.110.0
Pregabalin42.5040.020.00.06.026.6740.560.0

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Change From Baseline in Overall Weekly Mean Sleep Interference Score (SIRS)

"This is an 11-point NRS ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep [unable to sleep due to pain]). Participants describe how pain has interfered with their sleep during the past 24 hours. Please note that the data for Baseline (raw scores) have been included in the below table to read the change from Baseline data in context.~Note: Weekly mean SIRS scores were derived from the daily sleep diary and calculated as the mean of the available scores in the 7 days. Generally, week 'n' mean SIRS scores were defined as the mean of the 7 daily diary SIRS scores from Day 2+7 (n-1) to Day 1+7*n. For participants with multiple diary scores collected on the same day, the average of all non-missing scores for that day was used in any analyses or data listings.~Overall is the pooled average sleep interference score for each subject across all post-baseline/randomization weeks." (NCT01701362)
Timeframe: up to Week 15

,
Interventionunits on a scale (Mean)
Baseline (raw scores) (N = 274, 265)Week 1 (N = 260, 258)Week 2 (N = 254, 244)Week 3 (N = 252, 245)Week 4 (N = 245, 229)Week 5 (N = 241, 226)Week 6 (N = 244, 227)Week 7 (N = 240, 216)Week 8 (N = 236, 212)Week 9 (N = 232, 214)Week 10 (N = 229, 212)Week 11 (N = 230, 211)Week 12 (N = 227, 209)Week 13 (N = 225, 204)Week 14 (N = 222, 208)Week 15 (N = 196, 186)Overall (N = 269, 262)
Placebo4.99-0.28-0.81-1.14-1.30-1.40-1.46-1.50-1.52-1.55-1.55-1.64-1.68-1.70-1.79-1.83-1.37
Pregabalin4.97-0.66-1.15-1.55-1.73-1.87-1.94-2.01-2.05-2.09-2.04-2.09-2.17-2.19-2.19-2.13-1.83

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Amount Recovered in Urine During the Dosing Interval Tau (Aetauurine)

Aetauurine was the amount excreted in urine over the dosing interval tau (12 hours). It was calculated as the sum of (urine concentration * sample volume) for each collection interval from 0 to 12 hours post-dose, where tau was the dosing interval of 12 hours. Here, sample volume was based on the ratio of volume weight and density. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionmg (Geometric Mean)
Pregabalin133.1

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Time to Reach Maximum Observed Breast Milk Concentration (Tmax [Breast Milk])

Tmax (breast milk) was time of the maximum observed breast milk concentration Day 3 post-dose. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12, 12 to 24, 24 to 32, 32 to 40 and 40 to 48 hours post-dose on Day 3

Interventionhr (Median)
Pregabalin4.63

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Terminal Half-Life for Breast Milk (t1/2 [Breast Milk])

The terminal half-life for breast milk (t1/2 [breast milk]) was the time measured for breast milk concentration to decrease by one-half. For the first 5 participants enrolled under protocol amendment dated: 18 Sep 2012, breast milk was collected up to 24 hours after Day 3 dosing over the following time intervals: 0 to 2, 2 to 4, 4 to 8, 8 to 12, 12 to 24 hours. Terminal half-life was determined over those points characterizing the elimination phase. For the remaining 5 participants, there were 3 additional collection intervals (24 to 32, 32 to 40, 40 to 48 hours) for characterizing the terminal elimination phase. The t1/2 (breast milk) is based on the terminal elimination phase time points from this timeframe. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12, 12 to 24, 24 to 32, 32 to 40 and 40 to 48 hours post-dose on Day 3

Interventionhr (Mean)
Pregabalin8.117

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Renal Clearance (CLr)

Renal clearance (CLr) was the volume of plasma from which the drug was completely removed by the kidney in a given amount of time. It was calculated by dividing Aetauurine (sum of [urine concentration * sample volume] for each collection interval from 0 to 12 hours post-dose) with the plasma AUCtau, where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Plasma: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12 hours post-dose on Day 3. Urine: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8 and 8 to 12 hours post-dose on Day 3

InterventionmL/min (Geometric Mean)
Pregabalin68.16

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Plasma Half-Life (t1/2)

Plasma decay half-life (t1/2) was the time for the plasma concentration to decrease by one-half. The t1/2 is based on the terminal elimination phase time points from this timeframe. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12, 18, 24 hours post-dose on Day 3

Interventionhr (Mean)
Pregabalin5.624

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Percentage of Dose Excreted in Breast Milk During the Dosing Interval Tau (Aetaubm Percent)

Percentage of dose excreted in breast milk during the dosing interval tau (Aetaubm percent) was calculated by using the formula: 100*(Aetaubm [sum of {breast milk concentration * sample volume} for each collection interval from 0 to 12 hours post-dose] divided by dose), where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionpercentage of dose (Geometric Mean)
Pregabalin0.1913

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Number of Participants With Treatment-Emergent Adverse Events (AEs) or Serious Adverse Events (SAEs)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent are events between first dose of study drug and up to 28 days after last dose that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAEs and non-SAEs. (NCT01727791)
Timeframe: Baseline up to 28 days after last dose of study drug

Interventionparticipants (Number)
Number of Participants with AEsNumber of Participants with SAEs
Pregabalin80

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Time to Reach Maximum Observed Plasma Concentration (Tmax)

Tmax was the time to peak concentration in plasma post Day 3 dose. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12, 18, 24 hours post-dose on Day 3

Interventionhr (Median)
Pregabalin2.01

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Milk to Plasma Ratio for AUCtau (MPAUCtau)

MPAUCtau was the ratio of AUCtau (breast milk) to AUCtau (plasma), where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Plasma: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12 hours post-dose on Day 3. Breast milk: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionratio (Mean)
Pregabalin0.769

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Percent of Dose Recovered in Urine During the Dosing Interval Tau (Aetauurine Percent)

Percent of dose recovered in urine during the dosing interval tau (Aetauurine percent) was calculated as 100* (Aetau [sum of {urine concentration * sample volume} for each collection interval from 0 to 12 hours post-dose] divided by the dose), where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionpercentage of dose (Geometric Mean)
Pregabalin88.6

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Number of Participants With Laboratory Abnormalities

The following parameters were analyzed for laboratory abnormalities: hematology (hemoglobin, hematocrit, red blood cell count, mean corpuscular volume [MCV], mean corpuscular hemoglobin [MCH], mean corpuscular hemoglobin concentration [MCHC], platelets, white blood cell count, lymphocytes, total neutrophils, basophils, eosinophils, monocytes); liver function (bilirubin, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, total protein, albumin); renal function (blood urea nitrogen, creatinine, uric acid); electrolytes (sodium, potassium, chloride, calcium, bicarbonate); clinical chemistry (glucose); urinalysis (urine pH, glucose, ketones, protein, urine blood/hemoglobin, nitrite). (NCT01727791)
Timeframe: Baseline up to 28 days after last dose of study drug

Interventionparticipants (Number)
Pregabalin4

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Milk to Plasma Ratio for Maximum Observed Concentration (MPCmax)

Milk to plasma ratio for maximum observed concentration (MPCmax) was calculated as the ratio of Cmax (breast milk) to Cmax (plasma). (NCT01727791)
Timeframe: Plasma: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12, 18, 24 hours post-dose on Day 3. Breast milk: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12, 12 to 24, 24 to 32, 32 to 40 and 40 to 48 hours post-dose on Day 3

Interventionratio (Mean)
Pregabalin0.5413

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Number of Participants With Clinically Significant Change From Baseline in Vital Signs

The following parameters were analyzed for examination of vital signs: electrocardiogram (ECG), systolic and diastolic blood pressure, temperature, pulse rate, respiratory rate, radial pulse and body temperature. (NCT01727791)
Timeframe: Baseline up to 28 days after last dose of study drug

Interventionparticipants (Number)
Pregabalin0

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Minimum Observed Plasma Trough Concentration (Cmin)

Cmin was the minimum observed plasma concentration of a drug after post Day 3 dose. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12, 18, 24 hours post-dose on Day 3

Interventionmcg/mL (Geometric Mean)
Pregabalin1.246

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Maximum Observed Plasma Concentration (Cmax)

Cmax was the peak concentration in plasma post Day 3 dose. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12, 18, 24 hours post-dose on Day 3

Interventionmcg/mL (Geometric Mean)
Pregabalin4.67

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Maximum Observed Concentration in Breast Milk (Cmax [Breast Milk])

Cmax (breast milk) was the maximum observed concentration in breast milk post Day 3 dose. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12, 12 to 24, 24 to 32, 32 to 40 and 40 to 48 hours post-dose on Day 3

Interventionmcg/mL (Geometric Mean)
Pregabalin2.474

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Infant Dose Expressed as Percentage of Body Weight Normalized Maternal Dose (BWNIDPCM)

Infant dose expressed as percentage of body weight normalized maternal dose (BWNIDPCM) was the relative infant dose (relative to maternal dose) calculated by the formula: 100 * BWNID (Body Weight Normalized Infant Dose) / Body Weight Normalized Maternal Dose (BWNMD), where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Pre-dose to 24 hours post-dose on Day 3

Interventionpercentage of dose (Mean)
Pregabalin7.341

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Daily Amount of Pregabalin Excreted in Breast Milk (Ae24bm)

Ae24bm was the daily amount of pregabalin excreted in breast milk. It was calculated by the formula: 2 * Aetaubm (sum of [breast milk concentration * sample volume] for each collection interval from 0 to 12 hours post-dose), where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionmcg (Mean)
Pregabalin664.6

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Breast Milk Clearance (CLbm)

Breast milk clearance (CLbm) was calculated by dividing Aetaubm (sum of [breast milk concentration * sample volume] for each collection interval from 0 to 12 hours post-dose) by plasma AUCtau, where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Plasma: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12 hours post-dose on Day 3. Breast milk: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

InterventionmL/min (Geometric Mean)
Pregabalin0.1473

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Body Weight Normalized Maternal Dose (BWNMD)

Body weight normalized maternal dose (BWNMD) was calculated as the maternal dose in microgram per day (mcg/day) divided by maternal weight in kilogram (kg) at screening. (NCT01727791)
Timeframe: Pre-dose to 24 hours post-dose on Day 3

Interventionmcg/kg/day (Mean)
Pregabalin4343.6

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Body Weight Normalized Infant Dose (BWNID)

Body weight normalized infant dose (BWNID) of pregabalin was the dose that an infant received from breast-feeding and was calculated from the milk to plasma AUCtau ratio multiplied by the average maternal plasma pregabalin concentration (Cav) multiplied by the standardized milk consumption for an infant (150 milliliter/kilogram/day [mL/kg/day]), where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Plasma: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12 hours post-dose on Day 3. Breast milk: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionmcg/kg/day (Mean)
Pregabalin317.3

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Average Plasma Concentration During the Dosing Interval (Cav)

Average plasma concentration during the dosing interval (Cav) was calculated by dividing AUCtau (plasma) with tau, where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12 hours post-dose on Day 3

Interventionmcg/mL (Geometric Mean)
Pregabalin2.709

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Average Breast Milk Concentration During the Dosing Interval (Cav)

Average breast milk concentration during the dosing interval (Cav) was calculated by dividing AUCtau (breast milk) with tau, where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionmcg/mL (Mean)
Pregabalin2.116

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Area Under the Curve From Time Zero to End of Dosing Interval for Breast Milk (AUCtau [Breast Milk])

AUCtau (breast milk) was the area under the curve for breast milk, from time 0 to tau (AUCtau), where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionmcg*hr/mL (Geometric Mean)
Pregabalin24.64

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Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau)

Area under the plasma concentration-time profile from time 0 to tau (AUCtau), where tau was the dosing interval of 12 hours. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12 hours post-dose on Day 3

Interventionmicrogram*hour/milliliter (mcg*hr/mL) (Geometric Mean)
Pregabalin32.50

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Apparent Oral Clearance (CL/F)

Apparent oral clearance (CL/F) was calculated by dividing dose by the AUCtau, where tau was the dosing interval of 12 hours. Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0.5, 1, 2, 3, 4, 6, 10, 12 hours post-dose on Day 3

InterventionmL/minute (Geometric Mean)
Pregabalin76.90

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Amount Excreted in Breast Milk Over the Dosing Interval Tau (Aetaubm)

Aetaubm was the amount excreted in breast milk over the dosing interval tau (12 hours). It was calculated as the sum of (breast milk concentration * sample volume) for each collection interval from 0 to 12 hours post-dose, where tau was the dosing interval of 12 hours. Sample volume was based on ratio of volume weight and density. (NCT01727791)
Timeframe: Pre-dose on Day 3; 0 to 2, 2 to 4, 4 to 8, 8 to 12 hours post-dose on Day 3

Interventionmcg (Geometric Mean)
Pregabalin286.9

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Log-transformed (Log) 28-day Seizure Rate for All Primary Generalized Tonic-Clonic (PGTC) Seizures During 12-Week Double-Blind Treatment Phase

"All PGTC seizures experienced during treatment phase were recorded by the participants or their parents/legal guardian in a daily seizure diary. 28-day seizure rate for all PGTC seizures= ([number of seizures in the double blind treatment phase] divided by [number of days in double blind treatment phase minus {-} number of missing diary days in treatment phase])*28. For log-transformation, the quantity 1 was added to the 28-day seizure rate for all participants to account for any possible 0 seizure incidence. This resulted in final calculation as: log transformed (28-day seizure rate +1)." (NCT01747915)
Timeframe: Day 1 up to Week 12

InterventionSeizure per 28 days (Least Squares Mean)
Pregabalin 5 mg/kg/Day or 7 mg/kg/Day or 300 mg/Day1.17
Pregabalin 10 mg/kg/Day or 14 mg/kg/Day or 600 mg/Day1.13
Placebo1.14

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Percentage of Participants With at Least 50 Percent (%) or Greater Reduction From Baseline in 28-day Primary Generalized Tonic-clonic (PGTC) Seizure Rate During the 12-Week Double-blind Treatment Phase

Percentage of participants with 50% or greater reduction from baseline in 28-day seizure rate during the 12 week double blind treatment phase were reported. 28-day seizure rate for all PGTC seizures= ([number of seizures in the double blind treatment phase] divided by [number of days in double blind treatment phase minus {-} number of missing diary days in treatment phase])*28. (NCT01747915)
Timeframe: Day 1 up to Week 12

Interventionpercentage of participants (Number)
Pregabalin 5 mg/kg/Day or 7 mg/kg/Day or 300 mg/Day41.3
Pregabalin 10 mg/kg/Day or 14 mg/kg/Day or 600 mg/Day38.9
Placebo41.7

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Percentage of Participants With Adverse Drug Reaction

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01773993)
Timeframe: From Week 1 to 52 weeks at maximum

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)25.45

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Percentage of Participants With Adverse Drug Reaction Unexpected From Japanese Package Insert

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. Expectedness of the adverse event was determined according to the Japanese package insert. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01773993)
Timeframe: From Week 1 to 52 weeks

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)3.41

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Percentage of Participants With Serious Adverse Drug Reaction

An adverse drug reaction (ADR) was any untoward medical occurrence attributed to LYRICA Capsules in a participant who received LYRICA Capsules. A serious ADR was an ADR resulting in any of the following outcomes or deemed significant for any other reason: death; life-threatening experience (immediate risk of dying); initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; congenital anomaly. Relatedness to LYRICA Capsules was assessed by the physician. (NCT01773993)
Timeframe: From Week 1 to52 weeks

InterventionPercentage of Participants (Number)
LYRICA Capsules (Pregabalin)0.20

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Patient's Impression (PGIC) at Week 52

The patient's impression (patient global impression of change [PGIC]) at Week 52, as compared to the baseline condition (including the first day of treatment), was rated by participants on a 7-grade scale. (NCT01773993)
Timeframe: At Week 52

InterventionParticipants (Number)
Markedly improvedImprovedSlightly improvedUnchangedSlightly worsenedWorsenedMarkedly worsenedNot assessed
LYRICA Capsules (Pregabalin)347911965631109

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Change From Baseline in the Japanese Version of the Revised Fibromyalgia Impact Questionnaire (JFIQR) at 52 Weeks

"JFIQR is a Japanese version of the Revised Fibromyalgia Impact Questionnaire (FIQR), which was established for overall evaluation of the influence of fibromyalgia on patient's health. It consists of three linked sets of domains: function (9 questions), overall impact (2 questions), and symptoms (10 questions). Participants responded to the questions based on an 11-grade scale, ranging from 0 to 10, with 10 being the worst. For the analysis of JFIQR, the score for each domain was modified as follows: The summed score for function (ranged from 0 to 90) was divided by 3 and the summed score for symptoms (ranged from 0 to 100) was divided by 2. The summed score for overall impact (ranged from 0 to 20) was not modified. The total score, the sum of the three modified domain scores (ranged from 0 to 100, the lower score represents a better outcome), was used for the analysis. Mean change from baseline in the evaluation score was presented along with standard deviation." (NCT01773993)
Timeframe: At Week 52

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-15.2

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Change From Baseline in Quality of Sleep Score at Week 52

The quality of sleep experienced during the past 24 hours was rated by participants at the time of getting up in the morning on an 11-grade scale, ranging from 0 (the best sleep possible) to 10 (the worst sleep possible). Mean change from baseline in quality of sleep score at Week 52 was presented along with standard deviation. (NCT01773993)
Timeframe: Baseline and at Week 52

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-1.4

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Change From Baseline in Fibromyalgia Activity Score (FAS-31) at 52 Weeks

FAS-31 (ranged from 0 to 31) is calculated as the combined score of the widespread pain index (WPI, ranged from 0 to 19) and the symptom severity (SS) scale (ranged from 0 to 12). The WPI is a measure of the number of painful body regions. The SS is the scale of the severity in the three symptoms (fatigue, waking unrefreshed, and cognitive symptoms; ranged from 0 to 3 each) and general physical symptoms (ranged from 0 to 3). WPI ranged from 0 to 19 the higher score indicates more severe of activity, SS ranged from 0-12 also higher score shows more severe symptoms observed. Mean change from baseline in the evaluation score was presented along with standard deviation. (NCT01773993)
Timeframe: At Week 52

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-5.2

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Change From Baseline in Health Status of EuroQol 5 Dimension (EQ-5D) at 52 Weeks

"Health status (EQ-5D) was evaluated based on the following 5 dimensions: mobility, self-care, usual activity (e.g., work, study, housework, family, or leisure activities), pain/discomfort, and anxiety/depression. Each dimension was rated in the three levels of response alternatives no problems, some problems, or extreme problems. For the analysis of EQ-5D, the response outcome for the five dimensions was converted to a utility value using tariff value set based on the Japanese version of EQ-5D. The utility value was not assigned if there was no response in any one of the five dimensions. 1 for full health and 0 for being dead: a positive (negative) number implies that the health state is better (worse) than dead. Mean change from baseline in the evaluation score was presented along with standard deviation." (NCT01773993)
Timeframe: Baseline and at Week 52

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)0.1

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Change From Baseline in Pain Score at Week 52

The pain from fibromyalgia experienced during the past 24 hours was rated by participants at the time of getting up in the morning on an 11-grade scale, ranging from 0 (no pain) to 10 (the most severe pain possible). Mean change from baseline in the pain score at Week 52 was presented along with standard deviation. (NCT01773993)
Timeframe: Baseline and at Week 52

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-2.4

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Change From Baseline in Patient Health Questionnaire (PHQ-9) Score at Week 52

The problems associated with depression-related symptoms experienced during the last 2 weeks were rated by participants ranging from 0 (not at all) to 3 (nearly every day) in total 0 to 27(the higher the more severe) consisting the following 9 items: 1) little interest or pleasure in doing things; 2) depressed, or hopeless; 3) trouble falling or staying asleep, or sleeping too much; 4) feeling tired or having little energy; 5) poor appetite or overeating; 6) feeling bad about yourself - or that you are a failure or have let yourself or your family down; 7) trouble concentrating on things, such as reading the newspaper or watching television; 8) moving or speaking so slowly that other people could have noticed. Or the opposite - being so fidgety or restless that you have been moving around a lot more than usual; and 9) thoughts that you would be better off dead, or of hurting yourself. Mean change from baseline in the evaluation score was presented along with standard deviation. (NCT01773993)
Timeframe: Baseline and at Week 52

InterventionUnits on a scale (Mean)
LYRICA Capsules (Pregabalin)-3.4

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Physician's Impression (CGIC) at Week 52

The physician's impression (clinical global impression of change [CGIC]) at Week 52, as compared to the baseline condition (including the first day of treatment), was rated by the physician on a 7-grade scale. (NCT01773993)
Timeframe: At Week 52

InterventionParticipants (Number)
Markedly improvedImprovedSlightly improvedUnchangedSlightly worsenedWorsenedMarkedly worsenedNot assessed
LYRICA Capsules (Pregabalin)451051215942172

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Length of Stay

Length of stay in days after surgical procedure (NCT01801189)
Timeframe: Days in hospital following surgical procedure, up to 5 days

InterventionDays (Mean)
Pregabalin2.19
Sugar Pill2.24

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Post-operative Pain Medication Requirements

(NCT01801189)
Timeframe: Morphine milligram equivalent opioid requirements on post op days zero, 1, and 2.

,
InterventionMME (Mean)
POD 0POD 1POD 2
Pregabalin13.7640.8933.62
Sugar Pill17.3246.6329.74

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Percentage of Participants With PGIC for Each Arm Compared at Week 5 (Visit 4) and at Week 10 (Visit 6)

The PGIC is a single-item, self-rated instrument that measures change in the patient's overall status since starting study medication on a scale from 1 (very much improved) to 7 (very much worse), where lower scores indicate greater improvement. This scale was administered at Visit 4 and Visit 6. (NCT01838044)
Timeframe: Week 5 and Week 10

,
Interventionpercentage of participants (Number)
Week 5 - very much improved(n=84, 82)Week 5 - much worse(n=84, 82)Week 5 - much improved(n=84, 82)Week 5 - minimally improved(n=84, 82)Week 5 - no change(n=84, 82)Week 5 - minimally worse(n=84, 82)Week 5 - very much worse(n=84, 82)Week 5 - missing(n=84, 82)Week 10 - very much improved(n=81, 76)Week 10 - much improved(n=81, 76)Week 10 - minimally improved(n=81, 76)Week 10 - no change(n=81, 76)Week 10 - minimally worse(n=81, 76)Week 10 - much worse(n=81, 76)Week 10 - very much worse(n=81, 76)Week 10 - missing(n=81, 76)
Arm A11.944.031.08.34.80.00.00.025.946.921.04.90.01.20.00.0
Arm B12.243.932.99.81.20.00.00.031.651.315.80.01.30.00.00.0

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Change in the Weekly Mean Pain NRS Score in Arm B, Compared Between Week 5 (Visit 4) and Week 10 (Visit 6).

"The Daily Pain diary consists of an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10: Select the number that best describes your pain during the past 24 hours from 0 to10 where 0 represents no pain and 10 represents the worst possible pain." (NCT01838044)
Timeframe: Week 5 and Week 10

InterventionUnits on a scale (Least Squares Mean)
Arm B1.42

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Change From Baseline in the Weekly Mean Pain Numeric Rating Scale (NRS) Score at Week 5 (ie, Visit 4) Compared Between the Two Study Arms

"The Daily Pain diary consists of an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10: Select the number that best describes your pain during the past 24 hours from 0 to10 where 0 represents no pain and 10 represents the worst possible pain." (NCT01838044)
Timeframe: Baseline and Week 5

InterventionUnits on a scale (Mean)
Arm A-2.18
Arm B-2.03

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Change From Baseline in the Weekly Mean Pain NRS Score at Week 10 (Visit 6) Compared Between the Two Study Arms

"The Daily Pain diary consists of an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10: Select the number that best describes your pain during the past 24 hours from 0 to10 where 0 represents no pain and 10 represents the worst possible pain." (NCT01838044)
Timeframe: Baseline and Week 10

InterventionUnits on a scale (Least Squares Mean)
Arm A-3.21
Arm B-3.45

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Patient Global Impression of Change (PGIC) Compared Between Arms at Week 5 (Visit 4) and at Week 10 (Visit 6)

The PGIC is a single-item, self-rated instrument that measures change in the patient's overall status since starting study medication on a scale from 1 (very much improved) to 7 (very much worse), where lower scores indicate greater improvement. This scale was administered at Visit 4 and Visit 6. (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionUnits on a scale (Mean)
Week 5 (n=84, 82)Week 10 (n=81, 76)
Arm A2.692.31
Arm B2.642.11

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Change From Baseline in Hospital Anxiety and Depression Scale (HADS-A) Anxiety Scores at Week 5 (Visit 4) and Week 10 (Visit 6)

The HADS is a self-administered questionnaire measuring anxiety. Each subscale consists of 7 statements and the participants respond as to how each item applies to them on a scale of 0 to 3 (0 = No anxiety, to 3 = Severe feelings of anxiety). Separate scores are calculated for each subscale and a score (ranging from 0 to 21) is obtained for each subscale. The higher the score the more severe the anxiety. (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionUnits on a scale (Mean)
Week 5 (n=84, 82)Week 10 (n=81, 76)
Arm A-2.23-3.09
Arm B-1.91-2.68

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Change From Baseline in Brief Pain Inventory Short Form (BPI sf) - Pain Severity Index Score at Week 5 and Week 10

BPI-sf is a self-administered questionnaire developed to assess the severity of pain and the impact of pain on daily functions during the past 24 hours. The Pain severity domain: The BPI severity domain includes pain at its 'worst,' 'least,' 'average,' and 'now' (current pain) on 0-10 NRS scales and takes the mean of these 4 items. Scores range from 0 (no pain) to 10 (pain as bad as you can imagine), therefore higher scores indicate greater pain severity. (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionUnits on a scale (Mean)
Week 5 (n=84, 82)Week 10 (n=81, 76)
Arm A-1.75-2.83
Arm B-1.68-2.99

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Change From Baseline in Benefit, Satisfaction, and Willingness to Continue Measure Scores Compared Between Arms at Week 5 (Visit 4) and at Week 10 (Visit 6)

The BSW consists of 3, single-item measures designed to capture the participant's perception of the effect of treatment in terms of the relative benefit, their satisfaction, and their intention or willingness to continue on therapy. The BSW was administered by the investigator or designated site personnel in the local language as a standardized interview during the follow-up visits. The BSW can potentially be self-administered; however, this method of administration has not been tested. Participants completed this questionnaire at Visit 4 and Visit 6. (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionPercentage of participants (Number)
Benefit from Treatment - No benefit (Week 5)Benefit from Treatment - Little benefit (Week 5)Benefit from Treatment - Much benefit (Week 5)Satisfaction from Treatment - DVN (Week 5) - YesSatisfaction from Treatment - DVN (Week 5) - NoA Little Satisfied (Week 5)Very Satisfied (Week 5)A Little Dissatisfied (Week 5)Very Dissatisfied (Week 5)Willingness to Continue - DVN (Week 5) - YesWillingness to Continue - DVN (Week 5) - NoA Little Bit Willing (Week 5)Very Willing (Week 5)A Little Unwilling (Week 5)Very Unwilling (Week 5)Benefit from Treatment - No benefit (Week 10)Benefit from Treatment - Little benefit (Week 10)Benefit from Treatment - Much benefit (Week 10)Satisfaction from Treatment - DVN (Week 10) - YesSatisfaction from Treatment - DVN (Week 10) - NoA Little Satisfied (Week 10)Very Satisfied (Week 10)A Little Dissatisfied (Week 10)Very Dissatisfied (Week 10)Willingness to Continue - DVN (Week 10) - YesWillingness to Continue - DVN (Week 10) - NoA Little Bit Willing (Week 10)Very Willing (Week 10)A Little Unwilling (Week 10)Very Unwilling (Week 10)
Arm A10.122.561.878.715.720.258.412.43.494.405.688.8004.514.671.983.17.99.074.25.62.288.82.24.584.302.2
Arm B6.629.753.884.65.526.458.24.41.189.01.14.484.601.13.39.970.380.23.311.069.22.21.181.32.24.476.902.2

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Percentage of Participants With >= 50% Reduction From Baseline in the Weekly Mean Pain NRS Score at Week 5 and Week 10

"The Daily Pain diary consists of an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10: Select the number that best describes your pain during the past 24 hours from 0 to10 where 0 represents no pain and 10 represents the worst possible pain." (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionPercentage of participants (Number)
Yes (Week 5)No (Week 5)Yes (Week 10)No (Week 10)
Arm A25.075.042.053.4
Arm B20.080.037.852.2

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Percentage of Days in Mild, Moderate and Severe Pain at Period 1 and Period 2

Period 1 indicates from Visit 2 (baseline) to Visit 4 (Week 5). Period 2 indicates from Visit 4 (Week 5) to Visit 6 (Week 10). A rating of 0 is considered no pain; 1-3 is considered mild pain; 4-6, moderate pain; and 7-10, severe pain. (NCT01838044)
Timeframe: Period 1 and Period 2

,
Intervention% of days (Mean)
Period 1 (n=88, 90) (Mild)Period 2 (n=84, 81) (Mild)Period 1 (n=88, 90) (Moderate)Period 2 (n=84, 81) (Moderate)Period 1 (n=88, 90) (Severe)Period 2 (n=84, 81) (Severe)
Arm A19.133.540.233.238.826.5
Arm B15.325.037.644.244.821.8

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Change From Baseline in Weekly Mean of Daily Sleep Interference Rating Scale (SIRS) Compared Between Arms at Week 5 (Visit 4) and at Week 10 (Visit 6)

"The Daily Sleep Interference Rating Scale (SIRS) consists of an 11-point NRS ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep [unable to sleep due to pain]). Participants described how pain had interfered with their sleep during the past 24 hours: Select the number that best describes how your pain has interfered with your sleep during the past 24 hours on a scale from 0 to 10 where 0 represents 'does not interfere with sleep' and 10 represents 'completely interferes' which means you are unable to sleep due to pain." (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionUnits on a scale (Least Squares Mean)
Week 5(n= 85, 79)Week 10(n=81, 75)
Arm A-2.46-3.69
Arm B-2.12-3.38

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Change From Baseline in Medical Outcomes Study (MOS) Sleep Scale - Sleep Disturbance Subscale at Week 5 and Week 10

The MOS-Sleep Scale is a self-administered questionnaire consisting of 12 items that assess key constructs of sleep. Instrument scoring yields 7 subscales (sleep disturbance, snoring, awaken short of breath or with a headache, quantity of sleep, optimal sleep, sleep adequacy, and somnolence) as well as a 9-item overall sleep problems index. With the exception of sleep adequacy, optimal sleep, and quantity, higher scores reflect greater impairment in the MOS-Sleep subscales. Sleep Disturbance: Range=0 to 100; higher scores indicate greater sleep disturbance. Negative changes indicate improvement. (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionUnits on a scale (Mean)
Week 5 (n= 84, 82)Week 10 (n= 81, 76)
Arm A-21.3-27.1
Arm B-16.5-22.8

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Change From Baseline in Hospital Anxiety and Depression Scale (HADS-D) Depression Scores at Week 5 (Visit 4) and Week 10 (Visit 6)

The HADS is a self-administered questionnaire measuring depression. Each subscale consists of 7 statements and the participants respond as to how each item applies to them on a scale of 0 to 3 (0 = No depression, to 3 = Severe feelings of depression). Separate scores are calculated for each subscale and a score (ranging from 0 to 21) is obtained for each subscale. The higher the score the more severe the depression. (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionUnits on a scale (Mean)
Week 5 (n=84, 82)Week 10 (n=81, 76)
Arm A-1.87-2.57
Arm B-1.35-2.01

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Percentage of Participants With >= 30% Reduction From Baseline in the Weekly Mean Pain NRS Score at Week 5 and Week 10

"The Daily Pain diary consists of an 11-point NRS ranging from 0 (no pain) to 10 (worst possible pain). Participants described their pain during the past 24 hours by choosing the appropriate number between 0 and 10: Select the number that best describes your pain during the past 24 hours from 0 to10 where 0 represents no pain and 10 represents the worst possible pain." (NCT01838044)
Timeframe: Week 5 and Week 10

,
InterventionPercentage of participants (Number)
Yes (Week 5)No (Week 5)Yes (Week 10)No (Week 10)
Arm A51.148.963.631.8
Arm B35.664.458.931.1

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Brief Pain Index - Item 5, Average Daily Pain Score (Range 0-10) Higher Values Indicate Worse Pain

Brief pain Index - diabetic painful neuropathy (BPI-DPN) - average daily pain, Item 5 (final 2 day diary + in clinic assessment at end of 3 week treatment period) (NCT01928381)
Timeframe: 3 weeks of treatment

InterventionAverage daily pain score (Least Squares Mean)
Part 2 - Placebo4.24
Part 2 - Pregabalin + AZD52134.41
Part 2 - Pregabalin4.27

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Brief Pain Index - Item 5, Average Daily Pain Score (Range 0-10) Higher Score Indicates Worse Pain - Per Protocol

Brief pain Index - diabetic painful neuropathy (BPI-DPN) - average daily pain, Item 5 (final 2 day home diary + in clinic assessment at end of 3 week treatment) (NCT01928381)
Timeframe: 3 weeks of treatment

InterventionAverage daily pain score (Least Squares Mean)
Part 2 - Placebo4.46
Part 2 - Pregabalin + AZD52134.35
Part 2 - Pregabalin4.04

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Change in Average Pain Intensity.

"Participants will be asked to record their pain intensity in the evening. Participants are asked to rate how much pain they had on average in the past 24 hours. The participant scores their pain intensity on an 11-point Numerical Rating Scale (NRS) where a score of 0 indicated no pain and a score of 10 indicated pain as bad as you can imagine. Baseline average pain scores are calculated from the averages of all scores recorded during the 3 days prior to randomization. The average pain at week 6 will be the average pain scores calculated from all pain scores measured during week 6." (NCT01939366)
Timeframe: Baseline; to End of Week 6 of the Maintenance Phase

Interventionunits on a scale (Least Squares Mean)
Cebranopadol 100 µg-2.24
Cebranopadol 300 µg-2.28
Cebranopadol 600 µg-2.56
Pregabalin-2.79
Matching Placebo-1.55

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Weighted Needle (Pain) Threshold (WNT) in the Secondary Flare Area of Capsaicin-irritated Skin

"Weighted needle (pain) threshold (WNT) in the secondary flare area of capsaicin-irritated skin. The weighted needle (pain) threshold (WNT) will be determined (with regard to investigation of mechanical hyperalgesia in the secondary hyperalgesia zone around the primary capsaicin application zone) by fixed weight steps - contact made by rounded needle tip to skin (ranging from 1 mN to 512 mN)." (NCT02037165)
Timeframe: up to 24 hours(h): -1:20h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
Interventionmillinewton (mN) (Mean)
at -1:20hat 0:30hat 1:00hat 2:00hat 3:00hat 4:00hat 5:00hat 6:00hat 22:00hat 24:00h
150 mg Pregabalin (Prega)347.12301.48280.38254.70265.51255.45266.83273.42330.26340.76
200 mg BI 1026706369.98285.78262.20225.48222.66235.15228.09234.30274.92277.38
50 mg BI 1026706366.65295.65285.35287.94265.58265.77270.27281.21313.77312.85
Placebo348.72312.88290.28269.70274.30268.38261.50292.30331.76323.38

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"Single Peripheral N2-component Amplitudes - Measured in Capsaicin-irritated Skin Type"

"Single peripheral N2-component amplitudes - measured in capsaicin-irritated skin type." (NCT02037165)
Timeframe: up to 24 hours(h): -1:20h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
Interventionµv (Mean)
at -1:20hat 0:30hat 1:00hat 2:00hat 3:00hat 4:00hat 5:00hat 6:00hat 22:00hat 24:00h
150 mg Pregabalin (Prega)10.9912.1712.0312.1812.5110.8611.4912.0311.7711.35
200 mg BI 10267069.2712.1711.5012.3613.3912.6312.8412.2711.5311.70
50 mg BI 10267069.6512.7311.4311.8512.7113.5413.0112.2712.8411.71
Placebo10.4213.9513.7013.7713.4413.5212.9312.3613.5913.18

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"Single Central P2-component Amplitudes - Measured in UVB-irradiated Skin Type"

"Single central P2-component amplitudes - measured in UVB-irradiated skin type." (NCT02037165)
Timeframe: up to 24 hours(h): -2:05h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
Interventionµv (Mean)
UVB, at -2:05hUVB, at 0:30hUVB, at 1:00hUVB, at 2:00hUVB, at 3:00hUVB, at 4:00hUVB, at 5:00hUVB, at 6:00hUVB, at 22:00hUVB, at 24:00h
200 mg BI 102670614.6812.1813.3213.9714.4414.4913.8713.7415.5714.40
200 mg Celecoxib (Cele)12.9012.9813.3112.6512.4412.1012.0312.7316.0713.36
50 mg BI 102670613.3114.2312.6913.8814.0814.4913.2312.6115.4015.09
Placebo14.5914.0613.0312.3413.4014.0114.5414.7115.7715.43

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"Single Central P2-component Amplitudes - Measured in Capsaicin-irritated Skin Type"

"Single central P2-component amplitudes - measured in capsaicin-irritated skin type." (NCT02037165)
Timeframe: up to 24 hours(h): -1:20h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
Interventionµv (Mean)
at -1:20hat 0:30hat 1:00hat 2:00hat 3:00hat 4:00hat 5:00hat 6:00hat 22:00hat 24:00h
150 mg Pregabalin (Prega)11.4513.0312.7712.6511.9411.9011.5111.2711.3811.24
200 mg BI 102670610.3013.1811.6112.6212.7412.6312.4711.7812.0012.21
50 mg BI 10267068.8812.2712.2412.0912.9713.2012.7911.8711.6211.24
Placebo10.7513.8314.2514.2014.2514.0113.3213.4113.1611.65

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"Electronic Visual Analogue Scale (VAS) (100mm VAS Post Laser Pain Scales) - Measured in the UVB-irradiated Skin Type"

"Electronic Visual Analogue Scale (100mm VAS Post Laser Pain scales) - measured in the UVB-irradiated skin type, where 0mm = 'no pain' and 100mm = 'severe pain'." (NCT02037165)
Timeframe: up to 24 hours(h): -2:05h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
Interventionunits on a scale (Mean)
at -2:05hat 0:30hat 1:00hat 2:00hat 3:00hat 4:00hat 5:00hat 6:00hat 22:00hat 24:00h
200 mg BI 102670630.1632.2437.1646.8855.5262.0465.4866.6057.7661.13
200 mg Celecoxib (Cele)35.0838.0038.2844.0052.7256.6856.5256.4859.2861.96
50 mg BI 102670628.4232.4636.6742.9253.2556.3363.7165.4657.1361.96
Placebo30.4039.2441.4850.5656.4062.1666.6069.2461.6865.00

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"Electronic Visual Analogue Scale (100mm VAS Post Laser Pain Scales) - Measured in the Capsaicin-irritated Skin Type."

"Electronic Visual Analogue Scale (100mm VAS Post Laser Pain scales) - measured in the capsaicin-irritated skin type, where 0mm = 'no pain' and 100mm = 'severe pain'." (NCT02037165)
Timeframe: up to 24 hours(h): -1:20h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
Interventionunits on a scale (Mean)
at -1:20hat 0:30hat 1:00hat 2:00hat 3:00hat 4:00hat 5:00hat 6:00hat 22:00hat 24:00h
150 mg Pregabalin (Prega)22.6031.2832.8032.1637.1640.9243.9241.5636.3237.80
200 mg BI 102670620.3627.9233.7636.9244.5248.4047.5647.0039.4838.60
50 mg BI 102670616.7925.9630.0832.7938.7941.7944.2947.2134.2936.83
Placebo18.6430.6435.4839.5246.4447.4849.1650.4838.5239.92

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"Single Peripheral N2-component Amplitudes - Measured in UVB-irradiated Skin Type"

"Single peripheral N2-component amplitudes - measured in UVB-irradiated skin type." (NCT02037165)
Timeframe: up to 24 hours(h): -2:05h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
Interventionµv (Mean)
at -2:05hat 0:30hat 1:00hat 2:00hat 3:00hat 4:00hat 5:00hat 6:00hat 22:00hat 24:00h
200 mg BI 102670614.2512.7013.4515.0614.5816.9516.9315.3018.9318.58
200 mg Celecoxib (Cele)13.4513.6214.2912.2212.6111.8712.0714.0416.9916.67
50 mg BI 102670612.7813.7714.4214.9016.8516.9216.8715.5117.1217.74
Placebo14.6214.4812.5414.4016.0816.5217.2017.4618.7119.01

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Overall Peak-to-Peak (PtP) N2/P2-component Amplitude of (LEP) in Capsaicin-irritated Skin

Overall Peak-to-Peak (PtP) N2/P2-component amplitude of (LEP) in capsaicin-irritated skin. (NCT02037165)
Timeframe: up to 24 hours(h): -1:20h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
Interventionµv (Mean)
at -1:20hat 0:30hat 1:00hat 2:00hat 3:00hat 4:00hat 5:00hat 6:00hat 22:00hat 24:00h
150 mg Pregabalin (Prega)22.4425.2024.8024.8324.4622.7623.0023.3023.1522.59
200 mg BI 102670619.5725.3523.1124.9826.1325.2625.3124.0623.5323.91
50 mg BI 102670618.5325.0023.6723.9425.6826.7425.8124.1424.4622.94
Placebo21.1727.2127.9627.9727.6927.5326.2525.7726.7524.83

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Overall Peak-to-Peak(PtP) N2/P2-component Amplitude of Laser (Somatosensory/Radiant Heat) Evoked Potentials (LEP) in Ultraviolet B (UVB) -Irradiated Skin

"Overall Peak-to-Peak (PtP) N2/P2-component amplitude of Laser (somatosensory/radiant heat) evoked potentials (LEP) in UVB-irradiated skin.~Treated set (TS)" (NCT02037165)
Timeframe: up to 24 hours (h): -2:05h, 0:30h, 1:00h, 2:00h, 3:00h, 4:00h, 5:00h, 6:00h, 22:00h, 24:00h (relative to study drug administration [h:min])

,,,
InterventionMicrovolts (µv) (Mean)
at -2:05hat 0:30hat 1:00hat 2:00hat 3:00hat 4:00hat 5:00hat 6:00hat 22:00hat 24:00h
200 mg BI 102670628.9324.8826.7729.0329.0231.4430.7929.0434.5032.98
200 mg Celecoxib (Cele)26.3526.6027.6024.8725.0523.9724.1026.7733.0630.03
50 mg BI 102670626.0828.0027.1128.7830.9331.4030.1028.1232.5132.83
Placebo29.2227.8425.5726.7429.4830.5431.7432.1634.4834.43

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Percentage of Participants With Abnormal Neurological Examination Findings at Baseline and End of Study

Neurological examinations included: coordination; cranial nerve function (CNF); gait and station; level of consciousness (LOC); lower and upper extremity sensation; muscle strength; muscle tone; nystagmus; reflexes and speech. Abnormalities in neurological examination were based on investigator's discretion and also, some components of the neurological examination were not done for certain participants due to participant age or significant developmental impairment. Only those categories of neurological examination in which at least 10% of participants had an abnormality in any treatment group at any time point were reported in this outcome measure. (NCT02072824)
Timeframe: Baseline (BL) and EOS (maximum Day 25)

,,
Interventionpercentage of participants (Number)
Coordination- left hand movement (BL)Coordination-left hand movement (EOS)Coordination- right hand movement (EOS)Coordination- romberg test (BL)Coordination- romberg test (EOS)CNF- left eye visual field (BL)CNF- left eye visual field (EOS)CNF: right eye visual field (BL)CNF: right eye visual field (EOS)CNF: left fundoscopic exam (BL)CNF: left fundoscopic exam (EOS)CNF: right fundoscopic exam (BL)CNF: right fundoscopic exam (EOS)CNF: left visual acuity (BL)CNF: left visual acuity (EOS)CNF: right visual acuity (BL)CNF: right visual acuity (EOS)CNF: finger tracking (BL)CNF: finger tracking (EOS)CNF: swallowing (BL)CNF: swallowing (EOS)CNF:Left shoulder,head turn strength (BL)CNF: Left shoulder shrug,head turn strength (EOS)Gait and station - gait (BL)Gait and station - gait (EOS)Level of consciousness (BL)Level of consciousness (EOS)Muscle strength -lower extremities (BL)Muscle strength -lower extremities (EOS)Muscle strength - upper extremities (BL)Muscle strength - upper extremities (EOS)Muscle strength - trunk (BL)Muscle strength - trunk (EOS)Muscle tone - lower extremities (BL)Muscle tone - lower extremities (EOS)Muscle tone - upper extremities (BL)Muscle tone - upper extremities (EOS)Nystagmus - horizontal (BL)Nystagmus - horizontal (EOS)Reflexes - left ankle (BL)Reflexes - left ankle (EOS)Reflexes - right ankle (BL)Reflexes - right ankle (EOS)Reflexes - left babinski (BL)Reflexes - left babinski (EOS)Reflexes - right babinski (BL)Reflexes - right babinski (EOS)Reflexes - left biceps (BL)Reflexes - left biceps (EOS)Reflexes - right biceps (BL)Reflexes - right biceps (EOS)Reflexes - left brachioradialis (BL)Reflexes - left brachioradialis (EOS)Reflexes - right brachioradialis (BL)Reflexes - right brachioradialis (EOS)Reflexes - left knee (BL)Reflexes - left knee (EOS)Reflexes - right knee (BL)Reflexes - right knee (EOS)Reflexes - left triceps (BL)Reflexes - left triceps (EOS)Reflexes - right triceps (BL)Reflexes - right triceps (EOS)Speech - articulation (BL)Speech - articulation (EOS)Speech - language (BL)Speech - language (EOS)
Placebo8.610.110.110.011.610.010.110.010.112.914.514.314.512.913.011.411.624.326.114.314.57.110.145.746.45.72.951.453.650.052.244.342.063.866.263.866.27.15.847.146.447.146.447.147.850.050.750.049.352.952.248.647.850.050.757.156.561.459.445.744.948.647.845.747.865.766.7
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day11.88.85.98.85.98.88.85.95.926.523.520.617.611.811.811.811.826.523.514.714.72.92.950.052.920.620.658.858.858.858.838.238.273.573.573.573.511.811.852.952.958.858.847.147.155.955.952.952.958.858.852.952.958.858.855.958.861.864.752.952.958.858.847.144.176.573.5
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day1.41.42.82.82.812.712.712.712.712.712.711.311.311.311.311.311.322.521.114.114.111.311.352.152.15.67.049.349.347.949.343.739.464.364.864.864.89.98.546.546.546.545.142.340.842.340.847.947.946.546.545.145.143.743.753.552.152.150.746.546.545.145.153.554.969.069.0

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Percentage of Participants With Abnormal Physical Examination Findings at Screening and End of Study

Physical examinations evaluated the following body systems/organs: abdomen; ears; extremities; eyes; general appearance; head; heart; lungs; lymph nodes; mouth; musculoskeletal; nose; skin and throat. Abnormalities in physical examination were based on investigator's discretion. (NCT02072824)
Timeframe: Screening and EOS (maximum Day 25)

,,
Interventionpercentage of participants (Number)
Abdomen: ScreeningAbdomen: EOSEars: ScreeningEars: EOSExtremities: ScreeningExtremities: EOSEyes: ScreeningEyes: EOSGeneral appearance: ScreeningGeneral appearance: EOSHead: ScreeningHead: EOSHeart: ScreeningHeart: EOSLungs: ScreeningLungs: EOSLymph nodes: ScreeningLymph nodes: EOSMouth: ScreeningMouth: EOSMusculoskeletal: ScreeningMusculoskeletal: EOSNose: ScreeningNose: EOSSkin: ScreeningSkin: EOSThroat: ScreeningThroat: EOS
Placebo2.91.41.41.415.718.817.118.815.715.931.431.94.34.34.35.8005.75.835.737.705.821.421.702.9
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day5.95.90026.526.520.620.626.523.547.147.18.85.98.88.88.82.92.92.938.238.22.9014.714.72.95.9
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day4.24.21.41.414.114.19.99.915.515.531.033.81.41.42.82.8009.97.131.033.8009.98.51.40

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Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent AEs were events which occurred between first dose of study drug and up to end of study (up to Day 25) that were absent before treatment or that worsened relative to pre-treatment state. AEs included both serious and non-serious adverse events. (NCT02072824)
Timeframe: Day 1 up to End of study (EOS) (maximum Day 25)

,,
InterventionParticipants (Count of Participants)
AEsSAEs
Placebo384
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day171
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day320

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Log Transformed 24-Hour Seizure Rate for All Partial Onset Seizures During the Double-Blind Treatment Phase

"All partial onset seizures experienced during treatment phase were recorded by central reader during the 48 to 72 hour video-electroencephalogram (EEG). Double Blind 24 hour EEG seizure rate for all partial onset seizures = ([Number of seizures in double blind 48 to 72 hour EEG assessment] divided by [number of hours of video-EEG monitoring])*24. The EEG assessment was done at the end of the fixed dose treatment. For log-transformation, the quantity 1 was added to the double blind 24 hour EEG seizure rate for all participants to account for any possible 0 seizure incidence. This resulted in final calculation as: log transformed (double-blind 24-hour EEG seizure rate + 1)." (NCT02072824)
Timeframe: Day 1 up to Day 14

Interventionseizures per 24 hours (Least Squares Mean)
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day1.69
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day1.15
Placebo1.58

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Number of Participants With Electrocardiogram (ECG) Abnormalities

Criteria for abnormalities in ECG findings: 1) Time from ECG Q wave to the end of the S wave corresponding to ventricle depolarization (QRS complex): >=140 milliseconds (msec); 2) The interval between the start of the P wave and the start of the QRS complex, corresponding to the time between the onset of the atrial depolarization and onset of ventricular depolarization (PR interval): >=200 msec; 3) Time from ECG Q wave to the end of the T wave corresponding to electrical systole corrected for heart rate using Fridericia's formula (QTCF interval): absolute value 450 to <480 msec, 480 to <500 msec, >=500 msec; 4) Maximum QT interval: >=500 msec; 5) Maximum QTCB interval (Bazett's correction): 450 to< 480 msec, 480 to <500 msec, >=500 msec. Only those categories of ECG abnormalities in which participants were found abnormal (maximum QTCB interval 450-<480 msec), were reported in this outcome measure. (NCT02072824)
Timeframe: From screening up to EOS (maximum Day 25)

InterventionParticipants (Count of Participants)
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day0
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day2
Placebo0

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Number of Participants With Laboratory Test Abnormalities

Abnormality Criteria: hemoglobin,hematocrit,red blood cells(RBC)count:<0.8*lower limit of normal[LLN],platelets:<0.5*LLN/>1.75*upper limit of normal[ULN]; leukocytes:<0.6*LLN/>1.5*ULN; lymphocytes,neutrophils, total protein,albumin, tetraiodothyronine,thyroid stimulating hormone:<0.8*LLN/>1.2*ULN; basophils,eosinophils,monocytes:>1.2*ULN; prothrombin [PT],PT international ratio:>1.1*ULN; aspartate aminotransferase,alanine aminotransferase,alkaline phosphatase,gamma glutamyl transferase:>0.3*ULN; bilirubin:>1.5*ULN; blood urea nitrogen,creatinine, cholesterol,triglycerides:>1.3*ULN; sodium: <0.95*LLN/>1.05*ULN; potassium,chloride,calcium,bicarbonate:<0.9*LLN/>1.1*ULN; glucose fasting:<0.6*LLN/>1.5*ULN; creatine kinase:>2*ULN;urine glucose,ketone,protein:>=1;urine WBC,RBC:>= 20/High Power Field[HPF]; urine casts,hyaline casts:>1/Low Power Field; urine bacteria:>20/HPF. (NCT02072824)
Timeframe: From Baseline up to EOS (maximum Day 25)

InterventionParticipants (Count of Participants)
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day65
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day29
Placebo61

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Responder Rate: Percentage of Participants With at Least 50 Percent (%) or Greater Reduction From Baseline in 24-Hour Seizure Rate for All Partial Onset Seizures During the Double-Blind Treatment Phase

Responder Rate was defined as percentage of participants who had a 50% or greater reduction from baseline in 24-hour seizure rate during the double-blind treatment phase. Double Blind 24 hour EEG seizure rate for all partial onset seizures = ([Number of seizures in double blind 48 to 72 hour EEG assessment] divided by [number of hours of video-EEG monitoring])*24. The EEG assessment was done at the end of the fixed dose treatment. (NCT02072824)
Timeframe: Day 1 up to Day 14

Interventionpercentage of participants (Number)
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day30.51
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day53.57
Placebo41.51

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Number of Adverse Events by Severity

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. AEs were classified according to the severity in 3 categories a) mild: AEs does not interfere with participant's usual function b) moderate: AEs interferes to some extent with participant's usual function c) severe: AEs interferes significantly with participant's usual function. (NCT02072824)
Timeframe: Day 1 up to EOS (maximum Day 25)

,,
Interventionevents (Number)
MildModerateSevere
Placebo67190
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day23130
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day6030

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Number of Participants With Vital Signs Abnormalities

Criteria for abnormalities in vital signs included: sitting/supine systolic blood pressure (SBP) values: maximum increase and decrease of greater than or equal to (>=) 30 millimeter of mercury (mmHg) from baseline; sitting/supine diastolic blood pressure (DBP) value: maximum increase and decrease of >=20 mmHg from baseline. (NCT02072824)
Timeframe: From Baseline (BL) up to EOS (maximum Day 25)

,,
InterventionParticipants (Count of Participants)
Maximum Increase from BL(>=30):sitting/supine SBPMaximum Increase from BL(>=20):sitting/supine DBPMaximum Decrease from BL(>=30):sitting/supine SBPMaximum Decrease from BL(>=20):sitting/supine DBP
Placebo1311
Pregabalin 14 mg/kg/Day or 12 mg/kg/Day0102
Pregabalin 7 mg/kg/Day or 6 mg/kg/Day2712

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Change From Baseline to Week 13 in EuroQol Five Dimensions Questionnaire (EQ-5D) in Participants Receiving DS-5565, Pregabalin, or Placebo

"The EQ-5D is an instrument that shows high construct validity and responsiveness in patients with chronic pain and has been used specifically in fibromyalgia. The EQ-5D includes a descriptive section with 5 dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) each with a scale that ranges from 0 (no problems) to 5 (extreme problems). These 5 dimensions are combined into an overall health utilities index, and a numeric rating scale (100 mm visual analog scale) that measures perception of overall health, with 0 indicating worst health and 100 representing best imaginable health. A summary index with a maximum total score of 1 can be derived from these five dimensions by conversion with a table of scores. The maximum total score of 1 indicates the best health outcome.~For this outcome, the change from baseline in total EQ-5D score is being reported. Positive values indicate an improvement in health." (NCT02146430)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo0.0779
Pregabalin 150 mg BID0.0712
DS-5565 15 mg QD0.0740
DS-5565 15 mg BID0.0696

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"Number of Participants Who Answered Much Improved or Better in Patient Global Impression of Change (PGIC) at Week 13 in Participants Receiving DS-5565, Pregabalin, or Placebo"

Patient global impression of change (PGIC) on a 7-point categorical scale, where 1 = very much improved and 7 = very much worse. Higher scores indicate worse outcomes. The number of participants with 'much improved or better' status (≤2) is being reported. (NCT02146430)
Timeframe: Baseline up Week 13 postdose

InterventionParticipants (Count of Participants)
Placebo83
Pregabalin 150 mg BID105
DS-5565 15 mg QD104
DS-5565 15 mg BID82

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Change From Baseline to Week 13 in Average Daily Sleep Interference in Participants Receiving DS-5565, Pregabalin, or Placebo

Pain-associated sleep interference was assessed using electronic daily diaries using an 11-point numeric rating scale (NRS) for pain, ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep, unable to sleep). ADSIS is the mean value of all available recordings of the respective week. (NCT02146430)
Timeframe: Baseline up Week 13 postdose

Interventionunits on a scale (Least Squares Mean)
Placebo-1.67
Pregabalin 150 mg BID-2.22
DS-5565 15 mg QD-2.30
DS-5565 15 mg BID-2.52

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Change From Baseline to Week 13 in Multidimensional Fatigue Inventory (MFI-20) General Fatigue Score in Participants Receiving DS-5565, Pregabalin, or Placebo

"MFI is a validated 20-item, self-reported instrument designed to measure fatigue in the following dimensions: general fatigue, physical fatigue, mental fatigue, reduced motivation, and reduced activity. The respondent is asked to mark an 'X' in 1 of 5 boxes arranged linearly where 1 is 'Yes, that is true' and 5 is 'No, that is not true.' Each subscale consists of 4 items, 2 indicative for fatigue and 2 contraindicative. For the indicative questions, a high score indicates a high fatigue level and low scores indicate a low fatigue levels. Conversely, for the contraindicative questions a high score indicates a low fatigue level and a low score indicates a high fatigue level. Overall, respondents are rated on a scale of 0 (no fatigue) to 7 (high fatigue).~For this outcome, the change from baseline in MFI-20 general fatigue subscale score is being reported. Negative values indicate an improvement in fatigue." (NCT02146430)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-1.9
Pregabalin 150 mg BID-2.0
DS-5565 15 mg QD-2.0
DS-5565 15 mg BID-1.6

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Change From Baseline in Weekly Average Daily Pain Score (ADPS) at Week 13 in Participants Receiving DS-5565, Pregabalin, Placebo

Average daily pain scores (ADPS) reported by the participant that best describes his or her worst pain over the previous 24 hours. A daily pain score has a scale where 0 = no pain to 10 = worst possible pain. Higher scores indicate a worse outcome. For participants with no Week 13 data, the baseline observation was carried forward (BOCF). The mean (multiple imputation estimate) and standard error (multiple imputation) are reported. (NCT02146430)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-1.66
Pregabalin 150 mg BID-1.90
DS-5565 15 mg QD-1.97
DS-5565 15 mg BID-1.93

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Change in Fibromyalgia Index Questionnaire (FIQ) Total Score From Baseline to Week 13 in Participants Receiving DS-5565, Pregabalin, or Placebo

"The total FIQ score is composed of 10 items, with a maximum possible score of 100. The first item contains 11 questions related to physical functioning and are rated on a 4-point Likert-type scale, where 0 indicates 'always' and 3 indicates 'never'. The overall impact items are rated on a 0-7 scale for the number of days that the patient felt well and the number of days they were unable to work (including housework) because of fibromyalgia symptoms. The symptoms items are rated on visual analog scales (0-10 cm), with higher numbers indicated greater symptomatology. Scores range from 0 (no impairment) to 10 (maximum impairment), where higher scores indicate worse outcome.~For this outcome, the change in total FIQ score from baseline is being reported. Negative values indicate improvement from baseline in impairment." (NCT02146430)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-13.20
Pregabalin 150 mg BID-16.60
DS-5565 15 mg QD-14.48
DS-5565 15 mg BID-13.13

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Number of Participants Reporting Optimal Sleep at Week 13 on the Medical Outcomes Study (MOS) Sleep Scale In Participants Receiving DS-5565, Pregabalin, or Placebo

The MOS Sleep Scale is a 12-item questionnaire from which the following subscales were derived: sleep disturbance (4 items), quantity of sleep/optimal sleep (1 item), snoring (1 item), awakening due to shortness of breath or due to headache (1 item), sleep adequacy (2 items), and somnolence (3 items). In addition, values for sleep disturbances index (9 items), optimal sleep scale (1 item), and sleep quantity scale (1 item) were determined. Most subscales range from 0 to 100, where higher scores indicate more of the concept begin measured (eg., higher sleep disturbance scores indicate greater sleep disturbances). (NCT02146430)
Timeframe: Week 13 postdose

InterventionParticipants (Count of Participants)
Placebo87
Pregabalin 150 mg BID117
DS-5565 15 mg QD93
DS-5565 15 mg BID109

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Proportion of Days a Rescue Medication Was Used Among Participants Receiving DS-5565, Pregabalin, or Placebo

Proportion of days with rescue medication intake during the double-blind treatment period equals number of days with rescue medication intake/(date of last study drug administration in the double-blind treatment period) - (date of first study drug administration + 1). (NCT02146430)
Timeframe: Week 1 to Week 13 postdose

Interventionproportion of days (Mean)
Placebo0.23
Pregabalin 150 mg BID0.18
DS-5565 15 mg QD0.22
DS-5565 15 mg BID0.19

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Change From Baseline to Week 13 in Hospital Anxiety and Depression Scale (HADS) in Participants Receiving DS-5565, Pregabalin, or Placebo

The HADS questionnaire is a reliable, widely-used self-assessment scale to assess symptoms of anxiety and depression. The instrument consists of 7 questions related to anxiety and 7 related to depression, each rated on a 4-point scale (score of 0 to 3). Scores for anxiety and depression are independently summed to compute HADS Anxiety and HADS-Depression subscale scores, with ranges from 0 (no anxiety/depression) to 21 (most severe anxiety/depression). (NCT02146430)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Mean)
Change from baseline to Week 13: AnxietyChange from baseline to Week 13: Depression
DS-5565 15 mg BID-1.1-0.6
DS-5565 15 mg QD-1.0-0.8
Placebo-1.0-0.8
Pregabalin 150 mg BID-0.8-1.1

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Change From Baseline to Week 13 in Short Form 36 (SF-36) in Participants Receiving DS-5565, Pregabalin, or Placebo

The SF-36 is a 36-question health survey that measures functional health and well-being from the participant's point of view. It is a measure of physical and mental health used across various disease areas, including fibromyalgia. The SF-36 scale ranges from 0 to 100 where lower scores indicate more disability (worse health) and higher scores represent less disability (better health). The physical component summary (PCS) and mental component summary (MCS) scores are reported. (NCT02146430)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Mean)
Change from baseline to Week 13:Physical ComponentChange from baseline to Week 13: Mental Component
DS-5565 15 mg BID7.0991.286
DS-5565 15 mg QD8.5981.163
Placebo8.0521.506
Pregabalin 150 mg BID9.8981.995

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Change From Baseline to Week 13 in the Brief Pain Inventory Short Form (BPI-SF) in Participants Receiving DS-5565, Pregabalin, or Placebo

The BPI-SF measures pain severity and interference within the past 24 hours. Items are rated on an 11-point NRS from 0 to 10, where 0 indicates does not interfere and 10 indicates completely interferes. Severity score is the average of the responses to the 4 pain intensity items that assess the Worst/Least/Average pain in the last 24 hours and the Pain Right Now. The individual items being reported (using the same scale as noted above) are Severity, General Activity, Mood, Walking Ability, Normal Work, Relations With Other People, Sleep, and Enjoyment of Life. Percentage relief of treatment pain scale ranges from 100% (complete pain relief) to 0% (no pain relief) and higher percentages indicate better outcome. Interference % is the average of responses for General activity, Mood, Walking ability, Normal work, Relations with other people, Sleep, Enjoyment of life where 0% (no interference) to 100% (completely interferes) and negative (ie. lower) percentages indicate better outcomes. (NCT02146430)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Least Squares Mean)
Worst painLeast painAverage painPain right nowSeverity scoreRelief (%) by treatment painInterference (%)General activityMoodWalking abilityNormal workRelations with other peopleSleepEnjoyment of life
DS-5565 15 mg BID6.6-1.3-1.4-1.7-1.515.6-15.65-1.6-1.3-1.1-1.5-1.3-2.6-1.5
DS-5565 15 mg QD6.5-1.3-1.4-1.7-1.517.1-15.46-1.6-1.3-1.1-1.5-1.3-2.5-1.6
Placebo6.6-1.2-1.2-1.7-1.415.9-14.04-1.5-1.1-1.1-1.5-0.9-2.1-1.6
Pregabalin 150 mg BID6.3-1.5-1.5-1.9-1.718.5-17.91-1.9-1.6-1.5-1.8-1.3-2.7-1.9

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Number of Responders at Week 13 Among Participants Receiving DS-5565, Pregabalin, or Placebo

The number of participants with at least a 30% or 50% reduction in average daily pain score (ADPS) at Week 13 is reported. (NCT02146430)
Timeframe: Week 13 postdose

,,,
InterventionParticipants (Count of Participants)
30% responders50% responders
DS-5565 15 mg BID10057
DS-5565 15 mg QD10671
Placebo10157
Pregabalin 150 mg BID11871

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The Number of Participants Reporting Optimal Sleep at Week 13 on the Medical Outcomes Study (MOS) Sleep Scale in Participants Receiving DS-5565, Pregabalin, or Placebo

The MOS sleep scale is a 12-item questionnaire from which the following subscales were derived: sleep disturbance (4 items), quantity of sleep/optimal sleep (1 item), snoring (1 item), awakening due to shortness of breath or due to headache (1 item), sleep adequacy (2 items), and somnolence (3 items). In addition, values for sleep disturbances index (9 items), optimal sleep scale (1 item), sleep quantity scale (1 item) were determine. Most subscales range from 0 to 100, where higher scores indicate more of the concept being measured (eg., higher sleep disturbance scores indicate greater sleep disturbances). (NCT02187159)
Timeframe: Week 13 postdose

InterventionParticipants (Count of Participants)
Placebo90
Pregabalin 150 mg BID94
DS-5565 15 mg QD101
DS-5565 15 mg BID106

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Change From Baseline to Week 13 in Hospital Anxiety and Depression Scale (HADS) in Participants Receiving DS-5565, Pregabalin, or Placebo

The HADS questionnaire is a reliable, widely-used self-assessment scale to assess symptoms of anxiety and depression. The instrument consists of 7 questions related to anxiety and 7 related to depression, each rated on a 4-point scale (score of 0 to 3). Scores for anxiety and depression are independently summed to compute HADS-Anxiety and HADS-Depression subscale scores, with ranges from 0 (no anxiety/depression) to 21 (most severe anxiety/depression). (NCT02187159)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Mean)
Change from baseline to Week 13: AnxietyChange from baseline to Week 13: Depression
DS-5565 15 mg BID-0.8-0.8
DS-5565 15 mg QD-0.7-1.1
Placebo-0.5-0.8
Pregabalin 150 mg BID-1.4-1.6

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Change From Baseline to Week 13 in the Brief Pain Inventory Short Form (BPI-SF) in Participants Receiving DS-5565, Pregabalin, or Placebo

The BPI-SF measures pain severity and interference within the past 24 hours. Items are rated on an 11-point NRS from 0 to 10, where 0 indicates does not interfere and 10 indicates completely interferes. Severity score is the average of the responses to the 4 pain intensity items that assess the Worst/Least/Average pain in the last 24 hours and the Pain Right Now. The individual items being reported (using the same scale as noted above) are Severity, General Activity, Mood, Walking Ability, Normal Work, Relations With Other People, Sleep, and Enjoyment of Life. Percentage relief of treatment pain scale ranges from 100% (complete pain relief) to 0% (no pain relief) and higher percentages indicate better outcome. Interference % is the average of responses for General activity, Mood, Walking ability, Normal work, Relations with other people, Sleep, Enjoyment of life where 0% (no interference) to 100% (completely interferes) and negative (ie. lower) percentages indicate better outcomes. (NCT02187159)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Mean)
Worst painLeast painAverage painPain right nowSeverity scoreRelief (%) by treatment of painInterference (%)General activityMoodWalking abilityNormal workRelations with other peopleSleepEnjoyment of life
DS-5565 15 mg BID-2.1-1.6-1.8-2.2-1.9125.9-18.35-2.1-1.6-1.4-1.9-1.2-3.0-1.7
DS-5565 15 mg QD-2.2-1.5-1.8-2.3-1.9624.2-19.97-2.1-1.6-1.8-1.9-1.6-3.1-1.9
Placebo-1.7-1.4-1.5-1.8-1.5920.1-14.79-1.6-1.3-1.5-1.6-1.2-1.9-1.3
Pregabalin 150 mg BID-2.6-1.9-2.1-2.8-2.3331.1-23.76-2.5-2.2-2.1-2.3-1.8-3.3-2.4

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Number of Responders at Week 13 Among Participants Receiving DS-5565, Pregabalin, or Placebo

The number of participants with at least a 30% or 50% reduction in average daily pain score (ADPS) at Week 13 is reported. (NCT02187159)
Timeframe: Week 13 postdose

,,,
InterventionParticipants (Count of Participants)
30% Responders50% Responders
DS-5565 15 mg BID11868
DS-5565 15 mg QD12379
Placebo11361
Pregabalin 150 mg BID13990

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Change From Baseline to Week 13 in Short Form 36 (SF-36) in Participants Receiving DS-5565, Pregabalin, or Placebo

The SF-36 is a 36-question health survey that measures functional health and well-being from the participant's point of view. It is a measure of physical and mental health used across various disease areas, including fibromyalgia. The SF-36 scale ranges from 0 to 100 where lower scores indicate more disability (worse health) and higher scores represent less disability (better health). The physical component summary (PCS) and mental component summary (MCS) scores are reported. (NCT02187159)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Mean)
Change from baseline to Week 13:Physical ComponentChange from baseline to Week 13: Mental Component
DS-5565 15 mg BID4.8331.198
DS-5565 15 mg QD5.0001.675
Placebo4.3951.371
Pregabalin 150 mg BID5.8153.093

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Change From Baseline to Week 13 in Average Daily Pain Score (ADPS) in Participants Receiving DS-5565, Pregabalin, or Placebo

The patient reported pain intensity daily (over the past 24 hours) on a scale of 0 = no pain to 10 = worst possible pain. The daily pain scores were averaged over 7 days to calculate the weekly ADPS. (NCT02187159)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-1.86
Pregabalin 150 mg BID-2.47
DS-5565 15 mg QD-2.24
DS-5565 15 mg BID-2.09

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"Number of Participants Who Answered Much Improved or Better on the Patient Global Impression of Change (PGIC) Scale at Week 13 in Participants Receiving DS-5565, Pregabalin, or Placebo"

"Patient-rated global impression of change (PGIC) on a categorical scale from 1 = very much improved to 7 = very much worse. The number of participants with much improved or better (≤2 scores) are reported." (NCT02187159)
Timeframe: Week 13 postdose

InterventionParticipants (Count of Participants)
Placebo91
Pregabalin 150 mg BID141
DS-5565 15 mg QD116
DS-5565 15 mg BID117

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Change From Baseline to Week 13 in Average Daily Sleep Interference Score (ADSIS) in Participants Receiving DS-5565, Pregabalin, or Placebo

Pain-associated sleep interference was assessed using electronic daily diaries using an 11-point numeric rating scale (NRS) for pain, ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep, unable to sleep). ADSIS is the mean value of all available recordings of the respective week. (NCT02187159)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Least Squares Mean)
Placebo-1.92
Pregabalin 150 mg BID-2.41
DS-5565 15 mg QD-2.48
DS-5565 15 mg BID-2.44

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Change From Baseline to Week 13 in EuroQol Five Dimensions Questionnaire (EQ-5D) in Participants Receiving DS-5565, Pregabalin, or Placebo

"The EQ-5D is an instrument that shows high construct validity and responsiveness in patients with chronic pain and has been used specifically in fibromyalgia. The EQ-5D includes a descriptive section with 5 dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) each with a scale that ranges from 0 (no problems) to 5 (extreme problems). These 5 dimensions are combined into an overall health utilities index, and a numeric rating scale (100 mm visual analog scale) that measures perception of overall health, with 0 indicating worst health and 100 representing best imaginable health. A summary index with a maximum total score of 1 can be derived from these five dimensions by conversion with a table of scores. The maximum total score of 1 indicates the best health outcome.~For this outcome, the change from baseline in total EQ-5D score is being reported. Positive values indicate an improvement in health." (NCT02187159)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo0.060
Pregabalin 150 mg BID0.10
DS-5565 15 mg QD0.08
DS-5565 15 mg BID0.07

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Change From Baseline to Week 13 in Fibromyalgia Index Questionnaire (FIQ) Total Score in Participants Receiving DS-5565, Pregabalin, or Placebo

"The total FIQ score is composed of 10 items, with a maximum possible score of 100. The first item contains 11 questions related to physical functioning and are rated on a 4-point Likert-type scale, where 0 indicates 'always' and 3 indicates 'never'. The overall impact items are rated on a 0-7 scale for the number of days that the patient felt well and the number of days they were unable to work (including housework) because of fibromyalgia symptoms. The symptoms items are rated on visual analog scales (0-10 cm), with higher numbers indicated greater symptomatology. Final scores range from 0 (no impairment) to 10 (maximum impairment), where higher scores indicate worse outcome.~For this outcome, the change in total FIQ score from baseline is being reported. Negative values indicate improvement from baseline in impairment." (NCT02187159)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-13.88
Pregabalin 150 mg BID-21.46
DS-5565 15 mg QD-17.41
DS-5565 15 mg BID-16.45

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Change From Baseline to Week 13 in Multidimensional Fatigue Inventory (MFI-20) General Fatigue Score in Participants Receiving DS-5565, Pregabalin, or Placebo

"MFI is a validated 20-item, self-reported instrument designed to measure fatigue in the following dimensions: general fatigue, physical fatigue, mental fatigue, reduced motivation, and reduced activity. The respondent is asked to mark an 'X' in 1 of 5 boxes arranged linearly where 1 is 'Yes, that is true' and 5 is 'No, that is not true.' Each subscale consists of 4 items, 2 indicative for fatigue and 2 contraindicative. For the indicative questions, a high score indicates a high fatigue level and low scores indicate a low fatigue levels. Conversely, for the contraindicative questions a high score indicates a low fatigue level and a low score indicates a high fatigue level. Overall, respondents are rated on a scale of 0 (no fatigue) to 7 (high fatigue).~For this outcome, the change from baseline in MFI-20 general fatigue subscale score is being reported. Negative values indicate an improvement in fatigue." (NCT02187159)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-1.4
Pregabalin 150 mg BID-2.8
DS-5565 15 mg QD-2.3
DS-5565 15 mg BID-2.1

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Proportion of Days a Rescue Medication Was Used in Participants Receiving DS-5565, Pregabalin, or Placebo

Proportion of days with rescue medication intake during the double-blind treatment period equals number of days with rescue medication intake/(date of last study drug administration in the double-blind treatment period) - date of first study drug administration + 1). (NCT02187159)
Timeframe: Week 1 to Week 13 postdose

Interventionproportion of days (Mean)
Placebo0.23
Pregabalin 150 mg BID0.21
DS-5565 15 mg QD0.22
DS-5565 15 mg BID0.21

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Change From Baseline to Week 13 in EuroQol Five Dimensions Questionnaire (EQ-5D) Measure Among Participants Receiving DS-5565, Pregabalin, or Placebo

"The EQ-5D is an instrument that shows high construct validity and responsiveness in patients with chronic pain and has been used specifically in fibromyalgia. The EQ-5D includes a descriptive section with 5 dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) each with a scale that ranges from 0 (no problems) to 5 (extreme problems). These 5 dimensions are combined into an overall health utilities index, and an numeric rating scale (100 mm visual analog scale) that measures perception of overall health, with 0 indicating worst health and 100 representing best imaginable health. A summary index with a maximum total score of 1 can be derived from these five dimensions by conversion with a table of scores. The maximum total score of 1 indicates the best health outcome.~For this outcome, the change from baseline in total EQ-5D score is being reported. Positive values indicate an improvement in health." (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo0.09
Pregabalin 150 mg BID0.1274
DS-5565 15 mg QD0.10
DS-5565 15 mg BID0.11

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Change From Baseline to Week 13 in Average Score on the Fibromyalgia Index Questionnaire (FIQ) in Participants Receiving DS-5565, Pregabalin, or Placebo

"The total FIQ score is composed of 10 items, with a maximum possible score of 100. The first item contains 11 questions related to physical functioning and are rated on a 4-point Likert-type scale, where 0 indicates 'always' and 3 indicates 'never'. The overall impact items are rated on a 0-7 scale for the number of days that the patient felt well and the number of days they were unable to work (including housework) because of fibromyalgia symptoms. The symptoms items are rated on visual analog scales (0-10 cm), with higher numbers indicated greater symptomatology. Final scores range from 0 (no impairment) to 10 (maximum impairment), where higher scores indicate worse outcome.~For this outcome, the change in total FIQ score from baseline is being reported. Negative values indicate improvement from baseline in impairment." (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-15.02
Pregabalin 150 mg BID-19.42
DS-5565 15 mg QD-16.61
DS-5565 15 mg BID-20.44

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Change From Baseline to Week 13 in Average Daily Sleep Interference Score (ADSIS) Among Participants Receiving DS-5565, Pregabalin, or Placebo

Pain-associated sleep interference will be assessed using the Average Daily Sleep Interference Score that utilize electronic daily diaries with an 11-point numeric rating scale (NRS) for pain, ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep, unable to sleep). Higher scores indicate worse outcomes. (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-1.76
Pregabalin 150 mg BID-2.71
DS-5565 15 mg QD-2.31
DS-5565 15 mg BID-2.64

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"Number of Participants Who Answered Much Improved or Better in Patient Global Impression of Change at Week 13 Receiving DS-5565, Pregabalin, or Placebo"

Patient global impression of change (PGIC) on a 7-point categorical scale, where 1 = very much improved and 7 = very much worse. Higher scores indicate worse outcomes. The number of participants with 'much improved or better' status (≤2) is being reported. (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

InterventionParticipants (Count of Participants)
Placebo88
Pregabalin 150 mg BID145
DS-5565 15 mg QD127
DS-5565 15 mg BID134

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Change From Baseline to Week 13 in Hospital Anxiety and Depression Scale (HADS) Measure Among Participants Receiving DS-5565, Pregabalin, or Placebo

The HADS questionnaire is a reliable, widely-used self-assessment scale to assess symptoms of anxiety and depression. The instrument consists of 7 questions related to anxiety and 7 related to depression, each rated on a 4-point scale (score of 0 to 3). Scores for anxiety and depression are independently summed to compute HADS-Anxiety and HADS-Depression subscale scores, with ranges from 0 to 21, where higher scores indicate greater severity. (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Mean)
Change from baseline at Week 13: AnxietyChange from baseline at Week 13: Depression
DS-5565 15 mg BID-1.0-1.2
DS-5565 15 mg QD-1.0-1.0
Placebo-1.0-0.8
Pregabalin 150 mg BID-0.9-1.0

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Change From Baseline to Week 13 in Average Daily Pain Score (ADPS) Among Participants Receiving DS-5565, Pregabalin, or Placebo

Average daily pain scores (ADPS) reported by the participant that best describes his or her worst pain over the previous 24 hours. A daily pain score has a scale where 0 = no pain to 10 = worst possible pain. Higher scores indicate a worse outcome. For participants with no Week 13 data, the baseline observation was carried forward (BOCF). The mean (multiple imputation estimate) and standard error (multiple imputation) are reported. (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-1.90
Pregabalin 150 mg BID-2.64
DS-5565 15 mg QD-2.04
DS-5565 15 mg BID-2.30

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Number of Participants Classified As Responders at Week 13 Among Participants Receiving DS-5565, Pregabalin, or Placebo

The ADPS responder rate was defined a priori as the proportion of participants who met the clinically relevant reductions (ie, ≥30% and ≥50%) in ADPS at Week 13 (baseline observation carried forward) compared to Baseline. (NCT02187471)
Timeframe: Week 13 postdose

,,,
InterventionParticipants (Count of Participants)
30% Responders50% Responders
DS-5565 15 mg BID12589
DS-5565 15 mg QD12177
Placebo12268
Pregabalin 150 mg BID14495

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Change From Baseline to Week 13 in Short Form 36 (SF-36) Measure Among Participants Receiving DS-5565, Pregabalin, or Placebo

The SF-36 is a generic health survey that asks 36 questions to measure functional health and well-being from the patient's point of view. The SF-36 provides scores for 8 health domains (physical functioning, role-physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health) as well as psychometrically-based physical component summary (PCS) and mental component summary (MCS) scores. Each scale is transformed into a 0-100 scale with each question carrying the same weight. The lower the score indicates more disability (ie, worse outcome). (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Mean)
Change from baseline to Week 13:Physical ComponentChange from baseline to Week 13: Mental Component
DS-5565 15 mg BID6.222.71
DS-5565 15 mg QD5.941.56
Placebo3.782.23
Pregabalin 150 mg BID6.461.97

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Change From Baseline at Week 13 in the Brief Pain Inventory Short Form (BPI-SF) Measure Among Participants Receiving DS-5565, Pregabalin, or Placebo

The BPI-SF measures pain severity and interference within the past 24 hours. Items are rated on an 11-point NRS from 0 to 10, where 0 indicates does not interfere and 10 indicates completely interferes. Severity score is the average of the responses to the 4 pain intensity items that assess the Worst/Least/Average pain in the last 24 hours and the Pain Right Now. The individual items being reported (using the same scale as noted above) are Severity, General Activity, Mood, Walking Ability, Normal Work, Relations With Other People, Sleep, and Enjoyment of Life. Percentage relief of treatment pain scale ranges from 100% (complete pain relief) to 0% (no pain relief) and higher percentages indicate better outcome. Interference % is the average of responses for General activity, Mood, Walking ability, Normal work, Relations with other people, Sleep, Enjoyment of life where 0% (no interference) to 100% (completely interferes) and negative (ie. lower) percentages indicate better outcomes. (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

,,,
Interventionunits on a scale (Mean)
Worst painLeast painAverage painPain right nowSeverity scorePercentage of relief by treatment of painInterference (%)General activityMoodWalking abilityNormal workRelations with other peopleSleepEnjoyment of life
DS-5565 15 mg BID-2.7-2.1-2.3-2.9-2.5136.0-25.97-2.6-2.4-2.1-2.7-2.0-3.9-2.4
DS-5565 15 mg QD-2.2-2.0-2.0-2.5-2.1631.8-21.66-2.3-1.9-1.8-2.1-1.6-3.1-2.3
Placebo-1.9-1.5-1.5-2.1-1.7523.1-16.19-1.7-1.6-1.4-1.6-1.3-2.1-1.6
Pregabalin 150 mg BID-2.7-2.3-2.3-2.8-2.5532.6-23.55-2.5-2.1-1.7-2.3-1.9-3.6-2.4

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Proportion of Days a Rescue Medication Was Used Among Participants Receiving DS-5565, Pregabalin, or Placebo

Proportion of days with rescue medication intake during the double-blind treatment period equals number of days with rescue medication intake/(date of last study drug administration in the double-blind treatment period) - (date of first study drug administration + 1). (NCT02187471)
Timeframe: Week 1 to Week 13 postdose

Interventionproportion of days (Mean)
Placebo0.23
Pregabalin0.15
DS-5565 15 mg QD0.21
DS-5565 15 mg BID0.16

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Number of Participants Reporting Optimal Sleep at Week 13 on the Medical Outcomes Study (MOS) Sleep Scale Among Participants Receiving DS-5565, Pregabalin, or Placebo

The MOS Sleep Scale is a 12-item questionnaire from which the following subscales were derived: sleep disturbance (4 items), quantity of sleep/optimal sleep (1 item), snoring (1 item), awakening due to shortness of breath or due to headache (1 item), sleep adequacy (2 items), and somnolence (3 items). In addition, values for sleep disturbances index (9 items), optimal sleep scale (1 item), and sleep quantity scale (1 item) were determined. Most subscales range from 0 to 100, where higher scores indicate more of the concept begin measured (eg., higher sleep disturbance scores indicate greater sleep disturbances). (NCT02187471)
Timeframe: Week 13 postdose

InterventionParticipants (Count of Participants)
Placebo78
Pregabalin 150 mg BID107
DS-5565 15 mg QD102
DS-5565 15 mg BID119

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Change From Baseline to Week 13 in Multidimensional Fatigue Inventory (MFI-20) General Fatigue Score Among Participants Receiving DS-5565, Pregabalin, or Placebo

"MFI is a validated 20-item, self-reported instrument designed to measure fatigue in the following dimensions: general fatigue, physical fatigue, mental fatigue, reduced motivation, and reduced activity. The respondent is asked to mark an 'X' in 1 of 5 boxes arranged linearly where 1 is 'Yes, that is true' and 5 is 'No, that is not true.' Each subscale consists of 4 items, 2 indicative for fatigue and 2 contraindicative. For the indicative questions, a high score indicates a high fatigue level and low scores indicate a low fatigue levels. Conversely, for the contraindicative questions a high score indicates a low fatigue level and a low score indicates a high fatigue level. Overall, respondents are rated on a scale of 0 (no fatigue) to 7 (high fatigue).~For this outcome, the change from baseline in MFI-20 general fatigue subscale score is being reported. Negative values indicate an improvement in fatigue." (NCT02187471)
Timeframe: Baseline up to Week 13 postdose

Interventionunits on a scale (Mean)
Placebo-1.6
Pregabalin 150 mg BID-2.6
DS-5565 15 mg QD-2.4
DS-5565 15 mg BID-3.4

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Fasted Total Cholesterol Values

Percentage Change from Baseline in Fasted Total Cholesterol values (NCT02215252)
Timeframe: Baseline, Week 2 and Week 4

,,
InterventionPercent change (Mean)
Week 2 (n = 41, 37, 41)Week 4 (n = 40, 33, 39)
PF-05089771 150 mg BID3.466.59
Placebo-0.43-1.71
Pregabalin-1.45-0.11

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Number of Days Participants Take Rescue Medication

Number of days participants take rescue medication per week. (NCT02215252)
Timeframe: Baseline, Week 1, Week 2, Week 3 and Week 4

,,
Interventiondays (Mean)
Baseline (n = 44, 46, 45)Week 1 (n = 44, 46, 45)Week 2 (n = 44, 45, 44)Week 3 (n = 42, 42, 43)Week 4 (n = 42, 38, 43)
PF-05089771 150 mg BID2.82.32.02.11.9
Placebo1.61.51.21.01.1
Pregabalin2.11.81.71.21.6

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Number of Participants With Laboratory Test Values of Potential Clinical Importance

The total number of participants with laboratory test abnormalities (without regard to baseline abnormality) was assessed. Clinical laboratory tests included hematology, chemistry, urinalysis and some other tests. (NCT02215252)
Timeframe: Screening, Day 1, Day 15 and Day 29

InterventionParticipants (Number)
PF-05089771 150 mg BID38
Pregabalin35
Placebo37

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Daily Pain Numeric Rating Scale (NRS)

The endpoint average pain score, based on the mean of the last 7 days' daily pain numeric rating scale (NRS) scores at (NRS is an 11-point scale where 0 = no pain and 10 = worst possible pain) from the daily pain diaries while receiving study medication during the treatment period. (NCT02215252)
Timeframe: Baseline, Week 1, Week 2, Week 3 and Week 4

,,
InterventionUnit on a scale (Mean)
Baseline (n = 44, 46, 45)Week 1 (n = 44, 46, 44)Week 2 (n = 43, 44, 40)Week 3 (n = 38, 40, 41)Week 4 (n = 41, 38, 39)
PF-05089771 150 mg BID6.175.455.145.014.83
Placebo6.356.076.105.765.61
Pregabalin6.625.875.265.365.14

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Daily Sleep Interference Scale Score (DSIS).

Participant rated 11-point Likert scale ranging from 0 (pain does not interfere with sleep) to 10 (pain completely interferes with sleep) during past 24-hour period. Higher score indicates a greater level of sleep disturbance. Self-assessment performed daily on awakening prior to taking study medication. This score was measured as a weekly average. (NCT02215252)
Timeframe: Baseline, Week 1, Week 2, Week 3 and Week 4

,,
Interventionnumber on a scale (Mean)
Baseline (n = 44, 46, 45)Week 1 (n= 44, 46, 44)Week 2 (n = 43, 44, 40)Week 3 (n = 38, 40, 41)Week 4 (n = 41, 38, 39)
PF-05089771 150 mg BID4.74.14.03.63.4
Placebo4.94.74.74.34.3
Pregabalin5.64.74.14.44.2

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Total Amount of Rescue Medication Per Week

Total amount of rescue medication participants take per week (NCT02215252)
Timeframe: Baseline, Week 1, Week 2, Week 3, and Week 4

,,
Interventionmg (Mean)
Baseline (n = 44, 46, 45)Week 1 (n = 44, 46, 45)Week 2 (n = 44, 45, 44)Week 3 (n = 42, 42, 43)Week 4 (n = 42, 38, 43)
PF-05089771 150 mg BID27262272166918511617
Placebo18631694139113061372
Pregabalin33982897295218852328

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Fasted Low Density Lipoprotein (LDL) Cholesterol

Percentage Change from Baseline in LDL cholesterol Friedewald by PEG (NCT02215252)
Timeframe: Baseline, Week 2 and Week 4

,,
InterventionPerecent change (Mean)
Week 2 (n = 38, 34, 39)Week 4 (n = 37, 31, 36)
PF-05089771 150 mg BID8.1713.61
Placebo0.811.48
Pregabalin-1.730.85

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Neuropathic Pain Symptom Inventory (NPSI) - Paroxysmal Pain

Participant rated questionnaire to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]) including 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. A score in each dimension and also a total score (from 0-100) is generated using data from the questionnaire. Higher score indicates a greater intensity of pain. (NCT02215252)
Timeframe: Baseline, Week 2, and Week 4

,,
InterventionUnit on a scale (Mean)
Baseline (n = 44, 46, 45)Week 2 (n = 42, 41, 43)Week 4 (n = 42, 38, 42)
PF-05089771 150 mg BID4.54.13.9
Placebo5.64.94.8
Pregabalin5.84.74.6

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Neuropathic Pain Symptom Inventory (NPSI) - Paresthesia/Dysethesia

Participant rated questionnaire to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]) including 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. A score in each dimension and also a total score (from 0-100) is generated using data from the questionnaire. Higher score indicates a greater intensity of pain. (NCT02215252)
Timeframe: Baseline, Week 2 and Week 4

,,
InterventionUnit on a scale (Mean)
Baseline (n = 44, 46, 45)Week 2 (n = 42, 41, 43)Week 4 (n = 42, 38, 42)
PF-05089771 150 mg BID5.74.84.9
Placebo6.65.95.9
Pregabalin6.15.35.4

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Neuropathic Pain Symptom Inventory (NPSI) - Pressing (Deep) Spontaneous Pain

Participant rated questionnaire to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]) including 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. A score in each dimension and also a total score (from 0-100) is generated using data from the questionnaire. Higher score indicates a greater intensity of pain. (NCT02215252)
Timeframe: Baseline, Week 2 and Week 4

,,
InterventionUnit on a scale (Mean)
Baseline (n = 44, 46, 45)Week 2 (n = 42, 41, 43)Week 4 (n = 42, 38, 42)
PF-05089771 150 mg BID3.83.33.4
Placebo4.54.24.0
Pregabalin4.94.43.9

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Neuropathic Pain Symptom Inventory (NPSI) - Evoked Pain

Participant rated questionnaire to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]) including 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. A score in each dimension and also a total score (from 0-100) is generated using data from the questionnaire. Higher score indicates a greater intensity of pain. (NCT02215252)
Timeframe: Baseline, Week 2 and Week 4

,,
InterventionUnit on a scale (Mean)
Baseline (n = 44, 45, 45)Week 2 (n = 42, 40, 43)Week 4 (n = 42, 37, 42)
PF-05089771 150 mg BID2.72.02.3
Placebo4.23.53.6
Pregabalin5.04.03.8

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Responder Rate Based on a 50% Improvement in Mean Pain Response Using the Daily Pain NRS Score

Percentage of participants that received ≥50% improvement from baseline in mean pain response (from the daily pain diary). (NCT02215252)
Timeframe: Baseline, Week 1, Week 2, Week 3, and Week 4

,,
InterventionPercentage of participants (Number)
Week 1 (n = 44, 46, 45)Week 2 (n = 44, 45, 44)Week 3 (n = 42, 42, 43)Week 4 (n = 42, 38, 43)
PF-05089771 150 mg BID011.367.149.52
Placebo4.442.272.336.98
Pregabalin4.3515.5619.0523.68

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Neuropathic Pain Symptom Inventory (NPSI) - Burning (Superficial) Spontaneous Pain

Participants rated questionnaire to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]) including 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. A score in each dimension and also a total score (from 0-100) is generated using data from the questionnaire. Higher score indicates a greater intensity of pain. (NCT02215252)
Timeframe: Baseline, Week 2, and Week 4

,,
InterventionUnit on a scale (Mean)
Baseline (n = 44, 46, 45)Week 2 (n = 42, 41, 43)Week 4 (n = 42, 38, 42)
PF-05089771 150 mg BID4.63.73.4
Placebo4.84.24.5
Pregabalin5.34.34.3

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Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and Withdrawals Due to Adverse Events (AEs)

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. An SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; life threatening (immediate risk of death); initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; resulted in congenital anomaly/birth defect. (NCT02215252)
Timeframe: Screening to Day 36, and Day 64

,,
InterventionParticipants (Number)
Participants with TEAEsParticipants with SAEWithdrawals due to AEs
PF-05089771 150 mg BID1611
Placebo1702
Pregabalin2415

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Responder Rate Based on a 30% Improvement in Mean Pain Response Using the Daily Pain NRS Score

Percentage of participants that received ≥30% improvement from baseline in mean pain response (from the daily pain diary). (NCT02215252)
Timeframe: Baseline, Week 1, Week 2, Week 3 and Week 4

,,
InterventionPercentage of participants (Number)
Week 1 (n = 44, 46, 45)Week 2 (n = 44, 45, 44)Week 3 (n = 42, 42, 43)Week 4 (n = 42, 38, 43)
PF-05089771 150 mg BID9.0922.7323.8128.57
Placebo4.449.0911.6316.28
Pregabalin15.2231.1126.1931.58

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Plasma Concentration of PF-05089771

All participants in this group were analysed. Only plasma PK concentration of PF-05089771 was analysed. (NCT02215252)
Timeframe: Baseline, Week 2 and Week 4

Interventionng/ml (Mean)
Baseline (n = 43)Week 2 (n = 41)Week 4 (n = 41)
PF-05089771 150 mg BIDNA76738784

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Patient's Global Impression of Change Score (PGIC).

"Participant rated instrument to measure participant's change in overall status on a 7-point scale; range from 1 (very much improved) to 7 (very much worse) at week 4. The PGIC was combined to produce a 3-point scale, Improved, No Change and Worse." (NCT02215252)
Timeframe: Baseline, Week 2, and Week 4

,,
InterventionNumber of participants (Number)
Improved (Baseline, n = 43, 46, 45)Improved (Week 2, n = 42, 41, 43)Improved (Week 4, n = 42, 38, 42)No change (Baseline, n = 43, 46, 45)No change (Week 2, n = 42, 41, 43)No change (Week 4, n = 42, 38, 42)Worse (Baseline, n = 43, 46, 35)Worse (Week 2, n = 42, 41, 43)Worse (Week 4, n = 42, 38, 42)
PF-05089771 150 mg BID202728191012452
Placebo162624251314444
Pregabalin1130273079542

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Neuropathic Pain Symptom Inventory (NPSI) - Total Score

Participant rated questionnaire to evaluate different symptoms of neuropathic pain (dimensions: burning [superficial] spontaneous pain, pressing [deep] spontaneous pain, paroxysmal pain, evoked pain, and paresthesia/dyesthesia [P/D]) including 10 descriptors quantified on a 0 (no symptoms) to 10 (worst symptoms imaginable) and 2 temporal items assessing duration of spontaneous ongoing and paroxysmal pain. A score in each dimension and also a total score (from 0-100) is generated using data from the questionnaire. Higher score indicates a greater intensity of pain. (NCT02215252)
Timeframe: Baseline, Week 2 and Week 4

,,
InterventionUnit on a scale (Mean)
Baseline (n = 44, 45, 45)Week 2 (n = 42, 40, 34)Week 4 (n = 42, 37, 42)
PF-05089771 150 mg BID40.634.234.7
Placebo50.744.744.5
Pregabalin53.444.642.7

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PROMIS Fatigue Short Form v1.0 8a

"Higher scores for fatigue represents worse outcome (more fatigue). T-score metric: 50 is the mean of a relevant reference population and 10 is the standard deviation (SD) of that population.~On the T-score metric: A score of 40 is one SD lower than the mean of the reference population; A score of 60 is one SD higher than the mean of the reference population." (NCT02260388)
Timeframe: 12 Weeks

InterventionT-Score (Mean)
Nortriptyline53.6
Duloxetine55.4
Pregabalin56.7
Mexiletine51.6

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PROMIS Pain Interference Short Form v1.0 8a T Score

"Higher scores for pain interference represents worse outcome (more pain interference) T-score metric: 50 is the mean of a relevant reference population and 10 is the standard deviation (SD) of that population.~On the T-score metric: A score of 40 is one SD lower than the mean of the reference population; A score of 60 is one SD higher than the mean of the reference population." (NCT02260388)
Timeframe: 12 weeks

InterventionT-Score (Mean)
Nortriptyline56.4
Duloxetine56.5
Pregabalin60.0
Mexiletine54.5

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SF12 Health Composite Scores

"SF-12v2® Health Survey Standard The Optum™ SF-12v2® Health Survey is a shorter version of the SF-36v2® Health Survey that uses just 12 questions to measure functional health and well-being from the patient's point of view.~Survey provides psychometrically-based physical component summary (PCS) and mental component summary (MCS) scores.~Scores are calibrated so that 50 is the average score or norm, standard deviation = 10.~Higher scores indicate better health for both mental and physical component summary scores." (NCT02260388)
Timeframe: 12 weeks

,,,
InterventionNorm-Based Standardization Score (Mean)
Mental Component ScorePhysical Component Score
Duloxetine50.942.1
Mexiletine51.343.7
Nortriptyline51.042.8
Pregabalin47.240.0

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PROMIS Sleep Disturbance Short Form v1.0 8a

"Higher scores for sleep disturbance represents worse outcome (more sleep disturbance).~T-score metric: 50 is the mean of a relevant reference population and 10 is the standard deviation (SD) of that population.~On the T-score metric: A score of 40 is one SD lower than the mean of the reference population; A score of 60 is one SD higher than the mean of the reference population.~Higher scores equals more of the concept being measured" (NCT02260388)
Timeframe: 12 weeks

InterventionT-Score (Mean)
Nortriptyline58.9
Duloxetine58.9
Pregabalin58.3
Mexiletine59.1

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Average/Cumulative Opioid Dose

(NCT02277548)
Timeframe: 18 months

Interventionmg (Mean)
Lyrica at 300 mg Per Day32.65306
Placebo31.60714

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Numbers of Participants With Adverse Events as a Measure of Safety and Tolerability

Measure sedation score by evaluate and observe; measure pruritus, PONV, dizziness, visual disturbance using questionnaire (NCT02285010)
Timeframe: 24 hours

InterventionParticipants (Count of Participants)
Pruritus72177998Pruritus72177999Nausea72177998Nausea72177999Vomiting72177998Vomiting72177999Dizziness72177998Dizziness72177999Visual disturbance72177998Visual disturbance72177999
NoMildModerateSevere
Pregabalin17
Placebo35
Pregabalin31
Placebo15
Pregabalin10
Placebo1
Pregabalin3
Placebo18
Pregabalin23
Placebo24
Pregabalin21
Placebo16
Placebo31
Pregabalin38
Placebo10
Pregabalin9
Placebo12
Pregabalin8
Placebo5
Pregabalin6
Pregabalin14
Pregabalin39
Placebo9
Pregabalin7
Pregabalin1
Placebo51
Pregabalin45
Placebo7
Pregabalin16
Placebo0
Pregabalin0

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Pain Scores on the Visual Analog Scale

"Pain score is evaluated by nurses using Numerical Rating Scale (NRS)~Minimum score 0 (no pain), Maximum score 10 (worst imaginable pain), lower scores mean a better outcome" (NCT02285010)
Timeframe: 24 hours

,
Interventionscore on a scale (Median)
At restAt movement
Placebo24
Pregabalin24

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Time to First Analgesia

Time to first analgesia is recorded from IV PCA. (NCT02285010)
Timeframe: 24 hours

Interventionhour (Median)
Placebo4.6
Pregabalin7.7

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Post Operative Morphine Consumption

Cumulative morphine consumption in the first 24 hours is recorded from IV PCA (NCT02285010)
Timeframe: 6, 12, and 24 hours after operation

,
Interventionmg (Median)
Morphine consumption 6 hrMorphine consumption 12 hrMorphine consumption 24 hr
Placebo114
Pregabalin015

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Change in NPSI Outcomes

Change from baseline to week 4 in total NPSI (Neuropathic Pain Symptom Inventory) score The total NPSI score is comprised by adding 5 sub-scores (Burning pain, Pressing pain, Paroxysmal pain, Evoked pain, and Paresthesia/Dysesthesia) and is expressed on a 0-100 scale; 0-minimum (least), and 100 maximum (worst) score (NCT02394951)
Timeframe: Baseline to week 4

Interventionunits on a scale (0-100 NPSI score) (Mean)
Pregabalin-9.8
Placebo1.8

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Change in BPI Outcomes (SEVERITY)

Change from baseline to week 4 in BPI (Brief Pain Inventory) pain severity severity score BPI severity score is expressed on 0-10 scale, with 0 being the minimum (least), and 10 being the maximum (worst) pain severity (NCT02394951)
Timeframe: Baseline to week 4

Interventionunits on a scale (0-10 BPI severity) (Mean)
Pregabalin-0.8
Placebo-0.1

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Change in BPI Outcomes (INTERFERENCE)

Change from baseline to week 4 in BPI (Brief Pain Inventory) pain interference score BPI interference score is expressed on 0-10 scale, with 0 being the minimum (least), and 10 being the maximum (worst) pain interference (NCT02394951)
Timeframe: baseline to week 4

Interventionunits on a scale (0-10 BPI interference) (Mean)
Pregabalin-0.6
Placebo-0.2

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Absolute Change in Pain Intensity, Measured on 0-10 Numerical Rating Scale (NRS)

Absolute change in pain intensity on 0-10 numerical rating scale (NRS) from baseline to 4 weeks with pregabalin vs. placebo NRS: 0= no pain, 10= worst pain (NCT02394951)
Timeframe: Baseline to week 4

Interventionunits on a scale (0-10 NRS) (Mean)
Pregabalin-1.0
Placebo0.3

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Change in Spontaneous Pain Intensity as a Function of Baseline MPT

Correlation between Mechanical Pain Threshold (MPT in mN) at baseline and reduction in spontaneous pain intensity (% reduction on 0-10 NRS) at the end of 4-week treatment. The slopes (Pearson coefficients) of the correlation obtained from pregabalin vs. placebo will be compared. (NCT02394951)
Timeframe: Baseline to week 4

InterventionPearson correlation coefficient (Number)
Pregabalin-0.0179
Placebo-0.0172

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Number of Patients With Significant Pain Reduction

Number of patients who experienced 50% or more reduction in average daily pain (on 0-10 NRS, Numerical Rating Scale, where 0=least pain, 10=worst pain) (NCT02394951)
Timeframe: Baseline to week 4

InterventionParticipants (Count of Participants)
Pregabalin5
Placebo3

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Change in Sleep Problem Index (SPI) Outcomes

Change from baseline to week 4 in SPI (Sleep Problem Index) score, on 0-100 scale, where 0= best (least) score, and 100= maximum (worst) score (NCT02394951)
Timeframe: Baseline to week 4

Interventionunits on a scale (0-100 SPI) (Mean)
Pregabalin-5.1
Placebo-4.1

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Change From Baseline to 12 Weeks in the Weekly Mean of the 24-Hour Average Pain Score on the 11-Point Numeric Rating Scale (NRS)

"11-point NRS measures the severity of pain over the previous 24 hours. Participants were asked to provide 24-hour average pain scores in the daily Participant diary and among these, the weekly mean of the 24-hour average pain score was calculated. Scores range from 0 (no pain) to 10 (pain as bad as you can imagine).~Mixed Model Repeated Measures (MMRM) model with baseline value, Duration of diabetic peripheral neuropathic pain (DPNP), treatment, week, treatment-by-week interaction as fixed effects was used to produce Least Square Mean (LS Mean)." (NCT02417935)
Timeframe: Baseline, Week 12

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.358
Duloxetine-2.286

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Change From Baseline to 12 Weeks in the Weekly Mean of the 24-Hour Worst Pain Scores on the 11-Point NRS

"24-hour worst pain severity scores were recorded on an 11-point NRS in the daily patient diary, ranging from 0 (no pain) to 10 (pain as bad as you can imagine).The weekly mean of the worst pain score was calculated based on the daily score.~MMRM model with baseline value, duration of DPNP, treatment, week, treatment-by-week interaction as fixed effects was used to produce LS mean." (NCT02417935)
Timeframe: Baseline, Week 12

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.553
Duloxetine-2.416

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Change From Baseline to 12 Weeks on the Beck Depression Inventory-II (BDI-II) Total Score

"Beck Depression Inventory-II: BDI-II is a 21-item, participant-completed questionnaire to assess characteristics of depression. Each of the 21 items corresponding to symptoms of depression were scored on a 4-point scale ranging from 0 to 3 and was summed to give a single score. A total score of 0-13 was considered minimal range, 14-19 was mild, 20-28 was moderate, and 29-63 was severe.~MMRM model with baseline value, duration of DPNP, treatment, visit and treatment-by-visit interaction as fixed effects was used to produce LS mean." (NCT02417935)
Timeframe: Baseline, Week 12

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.5
Duloxetine-2.3

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Change From Baseline to 12 Weeks on the EuroQol 5 Dimension (EQ-5D)

"The EQ-5D is a self-reported, 5-item scale used to assess the patient's health utility (mobility, self-care, usual activities, pain and discomfort, and depression/anxiety). Scoring is on a 3-point scale.These combinations of attributes were converted into a weighted health-state Index Score according to the Japan population-based algorithm (range of the Index score is -0.111 - 1).A higher score indicates better health state.~ANCOVA model with LOCF with baseline value, treatment and duration of DPNP as fixed effects was used to produce LS mean." (NCT02417935)
Timeframe: Baseline, Week 12

Interventionunits on a scale (Least Squares Mean)
Pregabalin0.1004
Duloxetine0.1144

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Clinical Global Impression of Improvement (CGI-I) at 12 Weeks

"CGI-I measures clinician's perception of participant improvement at the time of assessment (compared with the start of treatment) with scores ranging from 1 (very much better) to 7 (very much worse).~MMRM model with duration of DPNP, treatment, visit and treatment-by-visit interaction as fixed effects was used to produce LS Mean." (NCT02417935)
Timeframe: Week 12

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.6
Duloxetine2.5

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Change From Baseline to 12 Weeks in the Weekly Mean of Night Pain Scores on the 11-Point NRS

"Night pain severity scores were recorded on an 11-point NRS in the daily patient diary, ranging from 0 (no pain) to 10 (pain as bad as you can imagine).The weekly mean of the night pain score was calculated based on the daily pain score.~MMRM model with baseline value, treatment, week, duration of DPNP and treatment-by-week interaction as fixed effects was used to produce LS mean." (NCT02417935)
Timeframe: Baseline, Week 12

Interventionunits on a scale (Least Squares Mean)
Pregabalin-2.166
Duloxetine-2.160

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Number of Participants With a 30% and 50% Reduction in the Weekly Mean of the 24-Hour Average Pain Score on the 11-Point NRS at 12 Weeks

11-point NRS measures the severity of pain over the previous 24 hours. Patients were asked to provide 24-hour average pain scores in the daily patient diary. scores range from 0 (no pain) to 10 (pain as bad as you can imagine) and among these, the weekly mean of the 24-hour average pain score was calculated based on daily score. (NCT02417935)
Timeframe: Week 12

,
InterventionParticipants (Count of Participants)
30% Reduction50% Reduction
Duloxetine10062
Pregabalin9462

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Change From Baseline to 12 Weeks on the Neuropathic Pain Symptom Inventory (NPSI)

"NPSI questionnaire is a 12-item self-administered questionnaire that will be completed by the participant. It assesses 5 different dimensions of neuropathic pain on a scale of 0 (no symptom) to 10 (worst imaginable symptom): burning spontaneous pain, pressing spontaneous pain, paroxysmal pain, evoked pain, and paresthesias/dysesthesias. The NPSI includes 12 items: 10 descriptors of the different symptoms and 2 items for assessing the duration of spontaneous ongoing and paroxysmal pain. A total score can be calculated as the sum of the scores of the 10 descriptors with scale range: 0 (no pain) -100 (worst pain imaginable).~Analysis of Covariance (ANCOVA) model with last observation carried forward (LOCF) with baseline, treatment, and duration of DPNP as fixed effects was used to produce LS mean." (NCT02417935)
Timeframe: Baseline, Week 12

,
Interventionunits on a scale (Least Squares Mean)
Total ScoreBurning PainPressing PainParoxysmal PainEvoked PainParesthesia/Dysesthesia
Duloxetine-16.1-1.3-1.4-1.7-1.2-2.6
Pregabalin-15.4-1.1-1.4-1.7-1.0-2.5

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Change From Baseline to 12 Weeks on the Brief Pain Inventory-Severity and Interference Rating Short Form (BPI-SF)

"Brief Pain Inventory Severity and Interference Scores: BPI-S and BPI-I are self-reported scales measuring severity of pain and interference on function. Severity scores: 0 (no pain) to 10 (pain as bad as you can imagine) on each question assessing worst pain, least pain, and average pain in past 24 hours, and pain right now. Interference scores: 0 (does not interfere) to 10 (completely interferes) on each question assessing interference of pain in past 24 hours for general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life. Average interference = average of non-missing scores of individual interference items.~MMRM model with baseline, duration of DPNP, treatment, visit, treatment-by-visit interaction as fixed effects was used to produce LS mean." (NCT02417935)
Timeframe: Baseline, Week 12

,
Interventionunits on a scale (Least Squares Mean)
Worst PainLeast PainAverage PainPain Right NowGeneral ActivityMoodWalking AbilityNormal WorkRelations with Other PeopleSleepEnjoyment of LifeAverage Interference
Duloxetine-2.7-1.9-2.4-2.4-2.1-2.1-1.9-1.8-0.9-1.7-1.8-1.77
Pregabalin-2.8-1.7-2.5-2.4-1.9-1.9-1.8-1.6-0.7-1.7-1.6-1.60

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Patient Global Impression of Improvement (PGI-I) at 12 Weeks

"PGI-I assessments was completed by the participant. The participant records how he/she perceives the degree of improvement (or worsening) at the time of assessment since taking treatment. The score ranges from 1 (very much better) to 7 (very much worse).~MMRM model with duration of DPNP, treatment, visit, treatment-by-visit interaction as fixed effects was used to produce LS Mean." (NCT02417935)
Timeframe: Week 12

Interventionunits on a scale (Least Squares Mean)
Pregabalin2.6
Duloxetine2.4

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Visual Analogue Score for Pain Intensity.

The primary outcome is change in visual analogue score for pain, with 0 being no pain at all and 10 being the most severe pain and a higher score meaning more pain, after 8 weeks of treatment phase and 4 weeks of randomized withdrawal phase. (NCT02607254)
Timeframe: Baseline, at 8 weeks after treatment phase and at 12 weeks for subjects completing the withdrawal phase

,,
Interventionscore on visual analogue score (Mean)
BaslineAfter 8 weeks of PregabalinAfter 4 weeks of Withdrawal phase
Pregabalin Treatment/ Placebo Withdrawal6.95.17.4
Pregabalin Treatment/No Withdrwal7.37.6NA
Pregabalin Treatment/Pregabalin Withdrawal7.15.46.1

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Sleep Quality as Assessed by Daily Sleep Interference Rating Scale (SIRS);

a scoring system describing sleep quality between 0-10 with 0 having no problem with sleep and 10 not being to sleep at all. (NCT02607254)
Timeframe: Baseline, at 8 weeks after treatment phase and at 12 weeks for subjects completing the withdrawal phase

,,
Interventionscore on Sleep Interference Rating scale (Mean)
BaslineAfter 8 weeks of PregabalinAfter 4 weeks of Withdrawal phase
Pregabalin Treatment/ Placebo Withdrawal5.32.84.3
Pregabalin Treatment/No Withdrwal5.95.1NA
Pregabalin Treatment/Pregabalin Withdrawal4.53.13.9

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Patient Global Impression of Change (PGIC);

patient assign a number between 1-7 to the level of improvement, 1 showing substantial improvement and 7 showing no improvement at all. (NCT02607254)
Timeframe: At 8 weeks after treatment phase and at 12 weeks for subjects completing the withdrawal phase

,,
Interventionscore on PGIC scale (Mean)
After 8 weeks of pregabalinAfter Withdrawal phase
Pregabalin Treatment/ Placebo Withdrawal5.44.2
Pregabalin Treatment/No Withdrwal1.8NA
Pregabalin Treatment/Pregabalin Withdrawal4.13.9

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Brief Pain Inventory (BPI sf);

Brief pain inventory is a scoring system for average pain intensity on scale of 0-10 with higher number meaning more pain. (NCT02607254)
Timeframe: Baseline, at 8 weeks after treatment phase and at 12 weeks for subjects completing the withdrawal phase

,,
Interventionscore in brief pain inventory scale (Mean)
BaslineAfter 8 weeks of PregabalinAfter 4 weeks of Withdrawal phase
Pregabalin Treatment/ Placebo Withdrawal6.34.55.6
Pregabalin Treatment/No Withdrwal7.26.8NA
Pregabalin Treatment/Pregabalin Withdrawal6.74.95.8

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Tear Evaporation Measured by Tear Break up Time (TBUT)

Participant will have 5 μl of preservative free fluorescein placed on their eye. The participant will then be positioned in the head rest of the slit lamp instrument and will be instructed to blink three times naturally and then not blink. The integrity of the tear film will be measured and, using a stopwatch, the time from the last blink until one or more black (dry) spots appear in the precorneal tear film will be recorded as TBUT. The absolute scores for TBUT completed on the 3 and 6 month visit will be reported. (NCT02701764)
Timeframe: 3 months, 6 months

,
InterventionSeconds (Mean)
3 months6 months
Placebo9.549.05
Pregabalin7.108.35

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Eye Pain as Assessed by the Short Form - McGill Pain Questionnaire (Sf-MPQ) Sensory

sf-MPQ Sensory has a total score ranging from 0-33 with a higher score indicating increased pain. Absolute scores will be reported from sf-MPQ Sensory questionnaire completed at 3 and 6 month visit. (NCT02701764)
Timeframe: 3 months, 6 months

,
Interventionscore on a scale (Mean)
3 months6 months
Placebo0.360.81
Pregabalin0.650.48

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Eye Pain as Assessed by the Numeric Rating Scale (NRS)

NRS total score ranges from 0-10 over a one week recall period with the higher score indicating increased pain. Absolute scores will be reported from NRS questionnaire completed at 3 and 6 month visit. (NCT02701764)
Timeframe: 3 months, 6 months

,
Interventionscore on a scale (Mean)
3 months6 months
Placebo0.270.38
Pregabalin0.851.10

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Eye Pain as Assessed by the Short Form - McGill Pain Questionnaire (Sf-MPQ) Affective

sf-MPQ Affective has a total score ranging from 0-12 with a higher score indicating increased pain. Absolute scores will be reported from sf-MPQ Affective questionnaire completed at 3 and 6 month visit. (NCT02701764)
Timeframe: 3 months, 6 months

,
Interventionscore on a scale (Mean)
3 months6 months
Placebo0.180.43
Pregabalin0.300.29

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Severity of Dry Eye Symptoms as Assessed by the Dry Eye Questionnaire - 5 (DEQ5)

DEQ5 total score ranges from 0-22 with the higher scores indicating increased dry eye. Absolute score will be reported from DEQ5 questionnaire completed at 6 month visit. (NCT02701764)
Timeframe: 6 months

Interventionscore on a scale (Mean)
Pregabalin6.6
Placebo4.5

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Dry Eye Symptoms as Evaluated by the Ocular Surface Disease Index (OSDI)

OSDI total score ranges from 0-100 with a higher score indicating greater disability. Absolute scores will be reported from OSDI questionnaire completed at 3 and 6 month visit. (NCT02701764)
Timeframe: 3 months, 6 months

,
Interventionscore on a scale (Mean)
3 months6 months
Placebo11.012.3
Pregabalin11.912.6

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Eye Pain as Evaluated by the Neuropathic Pain Symptom Inventory - Eye (NPSI-E)

NPSI-E total score ranges from 0-100 with a higher score indicating increased eye pain. Absolute scores will be reported from NPSI-Eye questionnaire completed at 3 and 6 month visit. (NCT02701764)
Timeframe: 3 months, 6 months

,
Interventionscore on a scale (Mean)
3 months6 months
Placebo1.863.14
Pregabalin2.702.81

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Tear Production Measured by Schirmers Score

Tear production will be measured via Schirmers score. Schirmer strips will be placed in the outer 1/3 of the lower conjunctivae. The Schirmer score will be evaluated as the length of wetting in mm in the Schirmer strips after 5 minutes. Absolute scores will be reported for the tear production evaluation at the 3 and 6 months visit. (NCT02701764)
Timeframe: 3 months, 6 months

,
Interventionmm wetting (Mean)
3 months6 months
Placebo15.9015.05
Pregabalin12.4015.45

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Number of Ibuprofen 800mg Tablets Used

summed number of tablets used by each participant over the 72 hour study period (NCT02782169)
Timeframe: Over 72 hours (measured at 0, 2, 6, 12, 24, and 72 hours)

Interventiontablets (Median)
Pregabalin1
Placebo2

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Maximum Pain Score Over Study Period

reported on an 11-point numerical rating scale (NRS 0-10) where 0 indicates no pain and 10 indicates the most severe pain (NCT02782169)
Timeframe: Over 72 hours (measured at 0, 2, 6, 12, 24, and 72 hours)

Interventionunits on a scale (Mean)
Pregabalin5.0
Placebo5.5

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Number of Participants Ever Experiencing Different Symptoms During Abortion

A participant was included once if they ever reported a symptom during the 72 hour study period, not reflective of how long the symptom lasted. These were all commonly reported side effects during previous research on medication abortions and commonly reported side effects of pregabalin, so they were not included as adverse events. (NCT02782169)
Timeframe: Over 72 hours (measured at 0, 2, 6, 12, 24, and 72 hours)

,
Interventionparticipants (Number)
NauseaVomitingSleepinessDizzinessHeadacheBlurred VisionDiarrheaConstipationDry Mouth
Placebo42303926177291525
Pregabalin43284745281528622

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Number of Oxycodone/Acetominophen Tablets (5/325mg) Used

summed number of tablets used by each participant over the 72 hour study period (NCT02782169)
Timeframe: Over 72 hours (measured at 0, 2, 6, 12, 24, and 72 hours)

Interventiontablets (Median)
Pregabalin0
Placebo0.5

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Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - Detection Task (DET)

Cogstate - Detection Task (DET) is a simple reaction time test of Psychomotor Function. Higher change from baseline means better performance. (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

Interventionmsec (Least Squares Mean)
Gralise® (Gabapentin)0.00
Neurontin® (Gabapentin)0.00
Lyrica® (Pregabalin)-0.01
Placebo (Sugar Pill)-0.00

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Change From Baseline Between Gralise® and Lyrica® in the Driving Simulator - Standard Deviation of Vehicle Speed (SDVS).

Miles per Hour (mph) (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

Interventionmph (Least Squares Mean)
Gralise® (Gabapentin)0.831
Lyrica® (Pregabalin)1.319
Placebo0.851

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Change From Baseline Between Gralise® and Neurontin® in the Driving Simulator - Standard Deviation of Vehicle Speed (SDVS).

Miles per Hour (mph) (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

Interventionmph (Least Squares Mean)
Gralise® (Gabapentin)0.831
Neurontin® (Gabapentin)0.947
Placebo0.851

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"Change From Baseline in the Standard Deviation of the Lateral Position (SDLP) Measured on the Driving Simulator Between Gralise® and Neurontin®"

SDLP (feet): This is a measurement of change from maintaining the normal driving position in the lane over time and / or distance. (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

Interventionfeet (Least Squares Mean)
Gralise® (Gabapentin)0.255
Neurontin® (Gabapentin)0.395
Placebo0.135

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"Change From Baseline in the Standard Deviation of the Lateral Position (SDLP) Measured on the Driving Simulator Between Gralise® and Lyrica®"

SDLP (feet): This is a measurement of change from maintaining the normal driving position in the lane over time and / or distance. (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

Interventionfeet (Least Squares Mean)
Gralise® (Gabapentin)0.255
Lyrica® (Pregabalin)0.356
Placebo0.135

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To Compare the Relative Safety and Tolerability of Gralise®, Neurontin®, and Lyrica®.

"Number of subjects with Treatment-Emergent Adverse Events (TEAE)~Number of subjects with Serious Adverse Event (SAE)~Number of subjects discontinued due to Adverse Event (AE)" (NCT03179345)
Timeframe: Screening to 1 week after Period 4 discharge

,,,
Interventionparticipants (Number)
Subjects with TEAESubjects with SAESubjects Discontinued due to AE
Gralise® (Gabapentin)600
Lyrica® (Pregabalin)1601
Neurontin® (Gabapentin)1301
Placebo (Sugar Pill)500

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Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Sedation Evaluation - Portland Neurotoxicity Scale (PNS).

Portland Neurotoxicity Scale (PNS) comprises 15 questions measured on a 10-point scale. [1=No problem, 2, 3, 4, 5=Often a problem, 6, 7, 8, 9, 10=Severe problem] in 16 categories. Each question was analyzed and is presented in the same way as the primary endpoints. (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

,,,
Interventionscores on a scale (Least Squares Mean)
Vision (blurring, double vision)Energy Level (get up and go)Memory (ability to remember people, places, or thiWalking (balance)Interest (in activities)CoordinationTremor (shakiness)Concentration (ability to concentrate on a task)Speech (slurring words)ForgetfulnessSleepiness (fatigue, sedation, tiredness)MoodinessAlertnessAttention SpanMotivation
Gralise® (Gabapentin)0.0360.0990.0770.2060.0460.180-0.1030.0800.0350.1180.6930.1810.2970.0200.185
Lyrica® (Pregabalin)0.2490.3150.1250.4050.0960.350-0.0310.1370.0650.1751.1760.0980.6070.1460.368
Neurontin® (Gabapentin)0.3220.2560.1230.3270.0300.3920.0370.1640.1330.2270.6350.1630.4510.1330.232
Placebo (Sugar Pill)0.1150.331-0.0410.1070.0700.2180.0680.1820.1030.0790.5410.1000.3530.0150.271

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Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Sedation Evaluation - Karolinska Sleepiness Scale (KSS).

Scale: 1-9, 1=extremely alert, 9 = very sleepy, great effort to keep awake, fighting sleep (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

Interventionunits on a scale (Least Squares Mean)
Gralise® (Gabapentin).774
Neurontin® (Gabapentin).264
Lyrica® (Pregabalin).868
Placebo (Sugar Pill).264

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Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - One Card Learning (OCLT).

Cogstate - The One Card Learning Test (OCLT) is a measure of visual learning and uses a well-validated pattern separation paradigm with playing card stimuli. Higher Score is better performance. Higher change from baseline means better performance. (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

InterventionScore on Scale (Least Squares Mean)
Gralise® (Gabapentin)0.02
Neurontin® (Gabapentin)0.06
Lyrica® (Pregabalin)0.00
Placebo (Sugar Pill)0.03

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Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - International Shopping List Test (ISL)

Cogstate - International Shopping List (ISL) test is a measure of verbal learning and uses a well-validated list-learning paradigm. Total number of correct responses remembering the word list on three consecutive trials at a single assessment. Higher score is better performance. Higher change from baseline means better performance. (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

InterventionScore on Scale (Least Squares Mean)
Gralise® (Gabapentin)0.36
Neurontin® (Gabapentin)0.82
Lyrica® (Pregabalin)0.03
Placebo (Sugar Pill)-0.01

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Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - Identification Task (IDN).

Cogstate - Identification Task (IDN) assesses Attention. Score is speed of performance (mean of the log10 transformed reaction times for correct responses). Lower score (quicker speed) is better performance. Higher change from baseline means better performance. (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

InterventionScore on Scale (Least Squares Mean)
Gralise® (Gabapentin)-0.00
Neurontin® (Gabapentin)0.00
Lyrica® (Pregabalin)-0.00
Placebo (Sugar Pill)0.01

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Change From Baseline Between, Gralise® and Neurontin®, Gralise® and Lyrica® for Cognitive Evaluation of Cogstate - Groton Maze Learning Test (GMLT).

Cogstate - The Groton Maze Learning test is a measure Executive Function. Total number of errors made while attempting to learn the same hidden pathway across the consecutive learning trials performed at a single assessment. Lower score means better performance. Higher change from baseline means better performance. (NCT03179345)
Timeframe: Baseline and Hour 3 on Day 3

InterventionNumber of errors on test (Least Squares Mean)
Gralise® (Gabapentin)-0.40
Neurontin® (Gabapentin)-0.01
Lyrica® (Pregabalin)-0.64
Placebo (Sugar Pill)3.32

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Maximum Dose of Pregabalin:

Defined as the highest amount of medication per day maintained for a 7 day period. (NCT03256253)
Timeframe: over the course of the 8 week trial or participants' length of participation

Interventionmilligrams (Mean)
Pregabalin571.4

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Proportion of Patients Who Have an Increase in Pain Score of ≥ 3 From Baseline Between Pregabalin and Placebo Across the 2 Cycles

"Compare the proportion of patients who have an increase in pain score of ≥ 3 from baseline between pregabalin and placebo across the 2 cycles.~The ten-point numerical scale is scored from 0 to 10. They will use this scale to rate their pain (and separately bone/joint pain) with 0 signifying no pain and 10 signifying the worst pain you can imagine." (NCT03407430)
Timeframe: Up to 12 weeks

Interventionproportion (Number)
First Intervention = Pregabalin0
Second Intervention = Placebo0.5
First Intervention = Placebo0
Second Intervention = Pregabalin0.333

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Number of Patients Who Have an Increase in Pain Score of ≥ 3 From Baseline Through the End of Study Medication in Cycle 1

"Compare the proportion of patients who have an increase in pain score of ≥ 3 from baseline through the end of study medication in cycle 1 between Arm A and Arm B.~The ten-point numerical scale is scored from 0 to 10. They will use this scale to rate their pain (and separately bone/joint pain) with 0 signifying no pain and 10 signifying the worst pain you can imagine." (NCT03407430)
Timeframe: Up to 12 weeks

InterventionParticipants (Count of Participants)
First Intervention = Pregabalin0
First Intervention = Placebo0

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Number of Days of Breakthrough Analgesic Use Between Pregabalin and Placebo Across the 2 Cycles

"Compare the number of days of breakthrough analgesic use between pregabalin and placebo within cycle 1 and across the 2 cycles.~The number of days of breakthrough analgesic use (i.e additional pain medication being required) is evaluated based on participant-provided medication logs kept during study treatment. If additional pain medication outside of their normal pain control regimen was reported, this day counts as 1. The total days for each patient are then reported, with a total range from zero to 14 (for patients with breast cancer) or zero to 21 (for patients with a lymphoma)." (NCT03407430)
Timeframe: Up to 12 weeks

Interventiondays (Mean)
First Intervention = Pregabalin1.4
Second Intervention = Placebo3.25
First Intervention = Placebo0.67
Second Intervention = Pregabalin0

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Proportion of Patients With Severe Pain Between Pregabalin and Placebo Across the 2 Cycles

"Compare the proportion of patients with severe pain between pregabalin and placebo within cycle 1 and across the 2 cycles.~The ten-point numerical scale is scored from 0 to 10. They will use this scale to rate their pain (and separately bone/joint pain) with 0 signifying no pain and 10 signifying the worst pain you can imagine." (NCT03407430)
Timeframe: Up to 12 weeks

Interventionproportion (Number)
First Intervention = Pregabalin0.4
Second Intervention = Placebo0.25
First Intervention = Placebo0.67
Second Intervention = Pregabalin0

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Proportion of Patients Who Have an Increase in Bone/Joint Pain Score of ≥ 3 From Baseline Through the End of Study Medication in Cycle 1

"Compare the proportion of patients who have an increase in bone/joint pain score of ≥ 3 from baseline through the end of study medication in cycle 1 between Arm A and Arm B.~The ten-point numerical scale is scored from 0 to 10. They will use this scale to rate their pain (and separately bone/joint pain) with 0 signifying no pain and 10 signifying the worst pain you can imagine." (NCT03407430)
Timeframe: Up to 12 weeks

Interventionproportion (Number)
First Intervention = Pregabalin0
First Intervention = Placebo0

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Maximum Change in Pain Score From Baseline Between Pregabalin and Placebo Across the 2 Cycles

"Compare the maximum change in pain score from baseline between pregabalin and placebo within cycle 1 and across the 2 cycles.~The ten-point numerical scale is scored from 0 to 10. They will use this scale to rate their pain (and separately bone/joint pain) with 0 signifying no pain and 10 signifying the worst pain you can imagine. Each patient will be assessed regularly, including: before therapeutic intervention (i.e. at consent/screening), first day of chemotherapy administration (during cycles 1 & 2), 4 days after pegfilgrastim administration (during cycles 1 & 2), and 8 days after pegfilgrastim administration (during cycles 1 & 2)." (NCT03407430)
Timeframe: Up to 12 weeks

Interventionunits on a scale (Mean)
First Intervention = Pregabalin0.4
Second Intervention = Placebo2
First Intervention = Placebo0
Second Intervention = Pregabalin1.67

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Maximum Neuropathic Pain Score Between Pregabalin and Placebo Across the 2 Cycles

"Compare the maximum neuropathic pain score between pregabalin and placebo within cycle 1 and across the 2 cycles.~The ID Pain scale (also know as the Identify Pain scale) is a 6-item, participant-completed screening tool designed to help differentiate nociceptive and neuropathic pain. This pain score also helps to evaluate the presence/absence of neuropathic pain at a given point of time.~Did the pain feel like pins and needles?~Did the pain feel hot/burning?~Did the pain feel numb?~Did the pain feel like electrical shocks?~Is the pain made worse with the touch of clothing or bed sheets?~Is the pain limited to your joints?~A yes response to questions 1-5 are scored as 1; for question 6, a yes is scored as -1. As such, higher scores (approaching 5) signify worse outcomes. The scale's total range for a patient is -1 to 5." (NCT03407430)
Timeframe: Up to 12 weeks

Interventionunits on a scale (Mean)
First Intervention = Pregabalin0.2
Second Intervention = Placebo0.5
First Intervention = Placebo0
Second Intervention = Pregabalin0.33

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Number of Subjects That Experienced a Grade 2 or Higher Adverse Events When Taking Pregabalin

CTCAE The NCI Common Terminology Criteria for Adverse Events is a descriptive terminology utilized for Adverse Event (AE) reporting. A grading (severity) scale is provided for each AE term. Grade 1 Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated. Grade 2 Moderate; minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental Activities of Daily Living (ADL). Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care ADL. Grade 4 Life-threatening consequences; urgent intervention indicated. Grade 5 Death related to AE. (NCT03407430)
Timeframe: Up to 12 weeks

InterventionParticipants (Count of Participants)
First Intervention = Pregabalin0
Second Intervention = Pregabalin0

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Pain as Assessed by Score on the Behavioral Pain Scale (BPS)

An average will be calculated of the daily score on the Behavioral Pain Scale (BPS). BPS score ranges from 3-12, with higher scores indicating worse pain. This assessment is used in non-verbal participants. (NCT03472469)
Timeframe: until discharge from hospital or 30 days post admission (whichever is sooner)

Interventionscore on a scale (Median)
Original MMPR - Descending Dose Arm2.5
MAST MMPR - Escalating Dose Arm2.3

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Pain as Assessed by Score on the Numeric Rating Scale (NRS)

An average will be calculated of the daily numeric rating scale (NRS) for pain (0=no pain, 10=worst pain). This assessment is used in verbal participants. (NCT03472469)
Timeframe: until discharge from hospital or 30 days post admission (whichever is sooner)

Interventionunits on a scale (Median)
Original MMPR - Descending Dose Arm3.3
MAST MMPR - Escalating Dose Arm3.3

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Pharmacy Costs

The costs of the pain medications given during the specified time period. (NCT03472469)
Timeframe: until discharge from hospital or 30 days post admission (whichever is sooner)

Interventiondollars (Median)
Original MMPR - Descending Dose Arm507
MAST MMPR - Escalating Dose Arm397

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Number of Intensive Care Unti (ICU) Days

"The number of days the patient was in the ICU post injury or up to 30 days (whichever is sooner). Zero-inflated models are presented as estimated marginal means (95% Credible Interval). The data reported as mean actually refers to marginal mean, and the data reported as 95% Confidence Interval actually refers to a 95% Credible Interval." (NCT03472469)
Timeframe: 30 days

InterventionICU days (Mean)
Original MMPR - Descending Dose Arm0.21
MAST MMPR - Escalating Dose Arm0.21

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Number of Hospital Days

"The number of days the patient was hospitalized post injury or up to 30 days (whichever is sooner). Zero-inflated models are presented as estimated marginal means (95% Credible Interval). The data reported as mean actually refers to marginal mean, and the data reported as 95% Confidence Interval actually refers to a 95% Credible Interval." (NCT03472469)
Timeframe: 30 days

Interventionhospital days (Mean)
Original MMPR - Descending Dose Arm4.97
MAST MMPR - Escalating Dose Arm5.12

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Number of Participants Discharged From the Hospital With an Opioid Prescription

(NCT03472469)
Timeframe: Up to 30 days

InterventionParticipants (Count of Participants)
Original MMPR - Descending Dose Arm527
MAST MMPR - Escalating Dose Arm476

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Number of Ventilator Days

"The number of days the patient on a ventilator post injury or up to 30 days (whichever is sooner). Zero-inflated models are presented as estimated marginal means (95% Credible Interval). The data reported as mean actually refers to marginal mean, and the data reported as 95% Confidence Interval actually refers to a 95% Credible Interval." (NCT03472469)
Timeframe: 30 days

Interventionventilator days (Mean)
Original MMPR - Descending Dose Arm0.08
MAST MMPR - Escalating Dose Arm0.06

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Opioid Use Per Day

Opioid use per day is calculated by tallying the dose equivalency of all opioids received and dividing by the number of days hospitalized. Morphine milligram equivalents (MME) per day are reported. (NCT03472469)
Timeframe: until discharge from hospital or 30 days post admission (whichever is sooner)

InterventionMME per day (Median)
Original MMPR - Descending Dose Arm48
MAST MMPR - Escalating Dose Arm34

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Overall Costs

the costs associated with the overall hospitalization or the first 30 days (whichever is sooner) related to post trauma care and complications incurred. (NCT03472469)
Timeframe: until discharge from hospital or 30 days post admission (whichever is sooner)

Interventiondollars (Median)
Original MMPR - Descending Dose Arm20093
MAST MMPR - Escalating Dose Arm19561

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Cumulative Number of Participants With Onset of First Perceptible Relief (FPR) Confirmed at 24 Hours After Dose 2

Beginning post-surgery (at initiation of Dose 2), participants were given a stopwatch and asked to press the stopwatch if and when they feel first perceptible relief; a record of the time was noted in the participants record. Cumulative number of participants with onset of FPR confirmed after dose 2 and was recorded from 0.25 hour till 24 hours after administration of dose 2. (NCT03652818)
Timeframe: 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 12.0 and 24 hours

InterventionParticipants (Count of Participants)
Group A/ Placebo Group12
Group B/ APAP Group23
Group C/ PGB Group17
Group D/ Combination Co-dosing Group22
Group E/ Combination Split-dosing Group10

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Number of Participants With Differing Patient Global Evaluation Scores

Patient global evaluation was self-reported at time of first rescue or at 12.25 hours post-surgery, whichever was first, using a 0-4 categorical rating scale of: (0) poor, (1) fair, (2) good, (3) very good, and (4) excellent. The number of participants with differing patient global evaluation scores were reported. (NCT03652818)
Timeframe: Upto 12.25 hours

,,,,
InterventionParticipants (Count of Participants)
(0) Poor(1) Fair(2) Good(3) Very good(4) Excellent
Group A/ Placebo Group133120
Group B/ APAP Group12785
Group C/ PGB Group82461
Group D/ Combination Co-dosing Group034105
Group E/ Combination Split-dosing Group01162

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Cumulative Number of Participants With Onset of Meaning Pain Relief (MPR) Confirmed at 24 Hours After Dose 2

Beginning post-surgery (at initiation of Dose 2), participants were given a stopwatch and asked to press the stopwatch if and when they feel first perceptible relief; a record of the time was noted in the participants record. Cumulative number of participants with onset of MPR confirmed after dose 2 and was recorded from 0.25 hour till 24 hours after administration of dose 2. (NCT03652818)
Timeframe: 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 6.0, 8.0, 12.0 and 24 hours

InterventionParticipants (Count of Participants)
Group A/ Placebo Group3
Group B/ APAP Group20
Group C/ PGB Group11
Group D/ Combination Co-dosing Group17
Group E/ Combination Split-dosing Group10

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Sum Pain Intensity Difference Scores

Beginning post-surgery (at initiation of Dose 2), Pain Intensity was self-reported over 24 hours, using a pain rating of 0-10 on the Numerical Rating Scale (NRS), with score between 0-10 (0= no pain; 10 = pain as bad as can be). Time weighted sum pain intensity difference scores are reported over 0 to 24 hours. Last observation carried forward method was used. (NCT03652818)
Timeframe: 0.5, 0.75, 1, 1.25, 1.75, 2.25 hours (± 5 min) and 3.25, 4.25, 5.25, 6.25, 8.25, 10.25, 12.25, 24 hours (± 10 min)

Interventionscore on a scale (Least Squares Mean)
Group A/ Placebo Group-2.4292
Group B/ APAP Group-68.0778
Group C/ PGB Group-68.3533
Group D/ Combination Co-dosing Group-93.3645
Group E/ Combination Split-dosing Group-82.4099

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Total Pain Relief Measure

Beginning post-surgery (at initiation of Dose 2), Pain Relief was self-reported over 24 hours, using a pain rating of 0-10 on the Numerical Rating Scale (NRS), with score between 0-10 (0= no pain; 10 = pain as bad as can be). Time-weighted sum pain total pain relief scores over 24 hours is reported Last observation carried forward method was used. (NCT03652818)
Timeframe: 0.5, 0.75, 1, 1.25, 1.75, 2.25 hours (± 5 min) and 3.25, 4.25, 5.25, 6.25, 8.25, 10.25, 12.25, 24 hours (± 10 min)

Interventionscore on a scale (Least Squares Mean)
Group A/ Placebo Group17.1038
Group B/ APAP Group88.2775
Group C/ PGB Group94.4433
Group D/ Combination Co-dosing Group121.9596
Group E/ Combination Split-dosing Group91.8373

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Cumulative Narcotic Use

Cumulative narcotic use was defined by cumulative morphine equivalents over the course of a patient's hospital course. The Washington State Agency Medical Director's Group Opioid dose calculator was used to provide a total morphine dose equivalent (MDE) for each patient while in the hospital. (NCT03669081)
Timeframe: 82.25 hours

Interventionmg (Median)
Toradol and Lyrica27
Placebo and Standard of Care45

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30 Day Mortality

Primary outcomes include 30 day mortality post-operatively. (NCT03669081)
Timeframe: 30 days

InterventionParticipants (Count of Participants)
Toradol and Lyrica0
Placebo and Standard of Care0

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Serum Creatinine Levels at One Year Post-operatively

Renal function was evaluated by following serum creatinine levels for up to one year post-operatively. (NCT03669081)
Timeframe: 1 year

Interventionmg/dL (Median)
Toradol and Lyrica0.6
Placebo and Standard of Care0.7

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Length of Hospital Stay

Primary outcomes include length of hospital stay (LOS). (NCT03669081)
Timeframe: 82.25 hours

Interventionhours (Median)
Toradol and Lyrica51.5
Placebo and Standard of Care57.3

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Number of Patients With Urinary Retention

Patients were evaluated post-operatively during hospital stay for instances of urinary retention. (NCT03669081)
Timeframe: 82.25 hours

InterventionParticipants (Count of Participants)
Toradol and Lyrica1
Placebo and Standard of Care0

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Bleeding Risk

Hematocrit levels were evaluated post-operatively for up to a day post-operatively for signs of blood loss. (NCT03669081)
Timeframe: 24 hours

Interventionpercentage of hematocrit (Mean)
Toradol and Lyrica6.3
Placebo and Standard of Care4.3

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Early Post-op Stent Related Symptoms

Ureteral Stent Related Symptom Questionnaire (USSQ) score, sum of urinary index score, pain index score, and general health index score. Minimum is 24. Maximum is 162. Higher scores indicate a worse outcome. (NCT03927781)
Timeframe: Post-op day 3

Interventionscore on a scale (Mean)
Pregabalin 300mg88

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Number of Participants Who Were Administered the Study Drug Correctly

(NCT03927781)
Timeframe: Day of surgery

InterventionParticipants (Count of Participants)
Pregabalin 300mg10

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Opioid Use

Number of patients stating that they had used opioids on any survey. (NCT03927781)
Timeframe: Up to 1 year post-op

InterventionParticipants (Count of Participants)
Pregabalin 300mg1

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Patient Satisfaction

Score on standardized evaluation of patient satisfaction at 7-days post-op. This was on a scale from 1) very dissatisfied to 5) very satisfied. Higher scores are better. (NCT03927781)
Timeframe: First 30 post-operative days

Interventionscore on a scale (Mean)
Pregabalin 300mg3.5

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Unplanned Healthcare Contacts

Number of unplanned contacts between the patient and the healthcare system. This is the total for all patients. (NCT03927781)
Timeframe: First 30 post-operative days

Interventionvisits (Number)
Pregabalin 300mg2

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Early Post-op Opioid Needs

Number of patients with a verified prescription for narcotic medication within the first 30 post-operative days. (NCT03927781)
Timeframe: First 30 post-operative days

InterventionParticipants (Count of Participants)
Pregabalin 300mg1

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Amount of Opioid Use

Total amount of opioid used for any indication at several time points, in oral morphine equivalents. This is the sum for all patients. (NCT03927781)
Timeframe: Up to 1 year post-op

Interventionoral morphine equivalents (Number)
Pregabalin 300mg90

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Respondent Reported Usability of Instruments

Number of patients able to complete 30 day post op questionnaire (NCT03927781)
Timeframe: 30 days post-op

InterventionParticipants (Count of Participants)
Pregabalin 300mg5

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Summed Pain Intensity (SPI) Assessed by Numeric Rating Scale From Hour 0 to Hour 12 (SPI0-12), Hour 12 to Hour 24 (SPI12-24), and Hour 24 to Hour 48 (SPI24-48).

Pain Intensity was determined using a pain rating of 0-10 on the NRS, with a score between 0-10 (0= no pain; 10 = worst imaginable pain). SPI were calculated using the trapezoidal method as the AUC of pain intensity as measured using the NRS through various time intervals at 0-12, 12-24 and 24-48 hours. For specific time interval SPI calculation, all available NRS pain intensity scores (scheduled pain intensity, unscheduled pain intensity and pre-rescue pain intensity) in the respective time interval, including any imputed values, were used in the calculation. Hour 0 was defined as the time of the end of surgery. SPI at various time intervals were calculated using the formula: SUM (1/2 (SPIi + SPIi+1)*Δt), where Δt was the time difference between Time i and Time (i+1). The represented values are sum of pain intensity scores at respective time interval (0-12, 12-24 and 24-48 hours). This outcome was compared between a combination of PGB and APAP, APAP alone, and placebo. (NCT04495283)
Timeframe: 0, 12, 24, 48 hours

,,
Interventionscore on a scale (Least Squares Mean)
SPI 0-12SPI 12-24SPI 24-48
APAP (Group B)49.0969.35184.33
PGB and APAP (Group A)33.0950.92126.83
Placebo (Group C).58.8988.95221.58

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Summed Pain Intensity (SPI) Assessed by Numeric Rating Scale Over Time

Pain Intensity was determined using a pain rating of 0-10 on the NRS, with a score between 0-10 (0= no pain; 10 = worst imaginable pain). SPI were calculated using the trapezoidal method as the AUC of pain intensity as measured using the NRS through various time intervals from 0 hour till each time point at 1, 2, 4, 6, 8, 10 ,12, 14, 16, 18, 20, 24, 28, 32, 36, 40, 44, and 48 hours. For specific time interval SPI calculation, all available NRS pain intensity scores (scheduled pain intensity, unscheduled pain intensity and pre-rescue pain intensity) in the respective time interval, including any imputed values, were used in the calculation. Hour 0 was defined as the time of the end of surgery. SPI at various time intervals were calculated using the formula: SUM (1/2 (SPIi + SPIi+1)*Δt), where Δt was the time difference between Time i and Time (i+1). The represented values are sum of pain intensity scores at respective time intervals. (NCT04495283)
Timeframe: 0, 1, 2, 4, 6, 8, 10 ,12, 14, 16, 18, 20, 24, 28, 32, 36, 40, 44, and 48 hours

,,
Interventionscore on a scale (Mean)
SPI 0-1SPI 0-2SPI 0-4SPI 0-6SPI 0-8SPI 0-10SPI 0-12SPI 0-14SPI 0-16SPI 0-18SPI 0-20SPI 0-24SPI 0-28SPI 0-32SPI 0-36SPI 0-40SPI 0-44SPI 0-48
APAP (Group B)0.732.398.0217.0928.0938.7149.0958.6267.9878.4986.24108.25128.83148.93169.44186.70199.95223.24
PGB and APAP (Group A)0.261.265.6312.6820.0026.2533.0941.1249.0855.8461.4977.1788.94100.85114.43126.45139.54153.08
Placebo (Group C).0.452.169.6220.7133.6445.9558.8972.1784.4697.57108.32134.91158.01180.50203.32224.78246.09267.51

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Total Consumption of Opioid Rescue Medication Through 24 Hours and 48 Hours

The total consumption of opioid rescue analgesia through 24 hours and through 48 hours was reported (NCT04495283)
Timeframe: 24 hours and 48 hours

,,
Interventionoral morphine equivalents (Mean)
Consumption of Rescue Medication through 24 hoursConsumption of Rescue Medication through 48 hours
APAP (Group B)19.2433.39
PGB and APAP (Group A)9.8617.36
Placebo (Group C).28.8843.88

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Time to First Use of Rescue Medication From Hour 0

Time to first use of rescue medication from Hour 0 was reported. Hour 0 was defined as the end of surgery (i.e., completion of the last suture). (NCT04495283)
Timeframe: 7 days

Interventionhours (Median)
PGB and APAP (Group A)11.60
APAP (Group B)5.78
Placebo (Group C).4.31

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Total Consumption of Rescue Medication

The total consumption of rescue analgesia was reported. (NCT04495283)
Timeframe: 7 days

Interventionoral morphine equivalents (Mean)
PGB and APAP (Group A)17.79
APAP (Group B)34.24
Placebo (Group C).44.76

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Summed Pain Intensity (SPI) Compared Between Group A and Group B

Pain Intensity using a pain rating of 0-10 on the Numerical Rating Scale (NRS), with a score between 0-10 (0= no pain; 10 = worst imaginable pain). Summed Pain Intensity (SPI0-48) -was calculated using the trapezoidal method as the area under the curve (AUC) of pain intensity as measured using the NRS through various time intervals up to 48 hours. For SPI0-48 calculation, all available NRS pain intensity scores (scheduled pain intensity, unscheduled pain intensity and pre-rescue pain intensity) from 0 to 48 hours, including any imputed values, were used in the calculation. Hour 0 was defined as the time of the end of surgery. SPI0-48 was calculated using the formula: SUM (1/2 (SPIi + SPIi+1)*Δt), where Δt was the time difference between Time i and Time (i+1). The represented values are sum of pain intensity scores at various time points. This outcome was compared between a combination of PGB and APAP (Group A) and APAP alone (Group B) from Hour 0 to Hour 48 (SPI0-48) (NCT04495283)
Timeframe: 0 to 48 hours

Interventionscore on a scale (Least Squares Mean)
PGB and APAP (Group A)153.08
APAP (Group B)223.24

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Summed Pain Intensity (SPI) Between Group A and Group C

Pain Intensity using a pain rating of 0-10 on the Numerical Rating Scale (NRS), with a score between 0-10 (0= no pain; 10 = worst imaginable pain). Summed Pain Intensity (SPI0-48) was calculated using the trapezoidal method as the area under the curve (AUC) of pain intensity as measured using the NRS through various time intervals up to 48 hours. For SPI0-48 calculation, all available NRS pain intensity scores (scheduled pain intensity, unscheduled pain intensity and pre-rescue pain intensity) from 0 to 48 hours, including any imputed values, was used in the calculation. Hour 0 was defined as the time of the end of surgery. SPI0-48 was calculated using the formula: Sum (1/2 (SPIi + SPIi+1)*Δt), where Δt was the time difference between Time i and Time (i+1). The represented values are sum of pain intensity scores at various time points. This outcome was compared between a combination of PGB and APAP (Group A) and placebo (Group C) from Hour 0 to Hour 48 (SPI0-48) (NCT04495283)
Timeframe: 0 to 48 hours

Interventionscore on a scale (Least Squares Mean)
PGB and APAP (Group A)153.08
Placebo (Group C).267.51

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Percentage of Participants Who Used Rescue Medication

Percentage of participants who used rescue medication is reported (NCT04495283)
Timeframe: 7 days

Interventionpercentage of participants (Number)
PGB and APAP (Group A)57.1
APAP (Group B)80.0
Placebo (Group C).82.4

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Minimum Observed Concentration for PGB and APAP

The Plasma Concentration (Cmin) is defined as the minimum observed concentration. Multiple blood samples were drawn at pre-decided time points. Timing for blood draws was within 3 minutes of the end of every infusion. Three minutes was the maximum allowance as every effort was made to take the sample as close as possible to 1.0 minute after infusion. (NCT04495283)
Timeframe: Pre-infusion (at least 3.0 minutes before the start of the first infusion) and at 0.5, 1.5, 6.0, 8.0, 12.0, 16.0, 18.0, 24.0, 30.0, 32.0, 36.0, 40.0, 42.0, and 48 hours post-infusion

Interventionnanogram per milliliter (ng/ml) (Geometric Mean)
PGB and APAP (Group A)NA
APAP (Group B)NA

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Maximum Observed Concentration for PGB and APAP

The Plasma Concentration (Cmax) is defined as the maximum observed concentration. Multiple blood samples were drawn at pre-decided time points. Timing for blood draws was within 3 minutes of the end of every infusion. Three minutes was the maximum allowance as every effort was made to take the sample as close as possible to 1.0 minute after infusion. (NCT04495283)
Timeframe: Pre-infusion (at least 3.0 minutes before the start of the first infusion) and at 0.5, 1.5, 6.0, 8.0, 12.0, 16.0, 18.0, 24.0, 30.0, 32.0, 36.0, 40.0, 42.0, and 48 hours post-infusion

Interventionnanogram per milliliter (ng/ml) (Geometric Mean)
Mean Cmax Values of Acetaminophen-First Dose
APAP (Group B)16847

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Maximum Observed Concentration for PGB and APAP

The Plasma Concentration (Cmax) is defined as the maximum observed concentration. Multiple blood samples were drawn at pre-decided time points. Timing for blood draws was within 3 minutes of the end of every infusion. Three minutes was the maximum allowance as every effort was made to take the sample as close as possible to 1.0 minute after infusion. (NCT04495283)
Timeframe: Pre-infusion (at least 3.0 minutes before the start of the first infusion) and at 0.5, 1.5, 6.0, 8.0, 12.0, 16.0, 18.0, 24.0, 30.0, 32.0, 36.0, 40.0, 42.0, and 48 hours post-infusion

Interventionnanogram per milliliter (ng/ml) (Geometric Mean)
Mean Cmax Values of Pregabalin- First DoseMean Cmax Values of Pregabalin- Last DoseMean Cmax Values of Acetaminophen-First Dose
PGB and APAP (Group A)100681296028700

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Percentage of Participants Who Were Opioid Free Over Time

Percentages of participants who did not take opioid (rescue medication) over time. (NCT04495283)
Timeframe: 12 to 48 hours

,,
Interventionpercentage of participants (Number)
During 12-24 HoursDuring 12-48 Hours
APAP (Group B)45.728.6
PGB and APAP (Group A)65.748.6
Placebo (Group C).35.329.4

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Number of Doses of Opioids Used as Analgesic Rescue in the Postoperative Period

Evaluation of the number of intravenous opioid doses used within 24 hours of postoperative abdominal hysterectomy surgery in patients who used pregabalin 300mg or not as preemptive analgesia (NCT04495374)
Timeframe: End of the first postoperative day of abdominal hysterectomy surgery (24 hours after the end of surgery)

Interventionnumber of doses (Median)
Group P(0) - Placebo4
Group P(1) - Pregabalin 300mg2

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Time Required for the Use of the First Dose of Opioid as an Analgesic Rescue in the Postoperative Period

• Evaluation of the time between the end of abdominal hysterectomy surgery and the patient's request for the use of the first dose of intravenous opioid as an analgesic rescue, comparing between patients who used or not pregabalin 300mg as preemptive analgesia (NCT04495374)
Timeframe: End of the first postoperative day of abdominal hysterectomy surgery (24 hours after the end of surgery)

InterventionTime in minutes (Median)
Group P(0) - Placebo170
Group P(1) - Pregabalin 300mg106

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Postoperative Pain in Rest Assessed 24 Hours After Abdominal Hysterectomy Surgery Using the Visual Analog Scale (VAS)

Postoperative pain assessment, 24 hours after abdominal hysterectomy surgery, in patients who used a single dose of pregabalin 300mg or placebo as preemptive analgesia, using the visual analog scale (VAS) consisting of a 10 cm (cm) line ) graduated in natural number intervals, starting at 0 (zero) until reaching 10 (ten), associated with the numbers, drawings related to the pain presented by the patient at the moment, in which the absence of pain (0 ) there is a happy face, and as the numerical value increases, the drawn face will represent the intensity of pain, up to the value of 10, where a face with crying characteristics is found, indicating greater pain. (NCT04495374)
Timeframe: End of the first postoperative day of abdominal hysterectomy surgery (24 hours after the end of surgery)

Interventionscore on a scale (Mean)
Group P(0) - Placebo5
Group P(1) - Pregabalin 300mg2

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Number of Participants With Dizziness Between the Intervention and Control Groups

• Assess the presence of adverse effects such as nausea and vomiting, itching and dizziness, comparing the intervention group that used pregabalin with the placebo group (NCT04495374)
Timeframe: End of the first postoperative day of abdominal hysterectomy surgery (24 hours after the end of surgery) and also immediately in the post-anesthetic recovery room

InterventionParticipants (Count of Participants)
Group P(0) - Placebo7
Group P(1) - Pregabalin 300mg16

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Postoperative Pain in Active Movement Assessed 24 Hours After Abdominal Hysterectomy Surgery Using the Visual Analog Scale (VAS)

Postoperative pain assessment, 24 hours after abdominal hysterectomy surgery, in patients who used a single dose of pregabalin 300mg or placebo as preemptive analgesia, using the visual analog scale (VAS) consisting of a 10 cm (cm) line ) graduated in natural number intervals, starting at 0 (zero) until reaching 10 (ten), associated with the numbers, drawings related to the pain presented by the patient at the moment, in which the absence of pain (0 ) there is a happy face, and as the numerical value increases, the drawn face will represent the intensity of pain, up to the value of 10, where a face with crying characteristics is found, indicating greater pain. (NCT04495374)
Timeframe: End of the first postoperative day of abdominal hysterectomy surgery (24 hours after the end of surgery)

Interventionscore on a scale (Mean)
Group P(0) - Placebo7
Group P(1) - Pregabalin 300mg4

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Postoperative Pain Assessed 24 Hours After Abdominal Hysterectomy Surgery, Using the McGill Pain Questionnaire

Postoperative pain assessment, 24 hours after abdominal hysterectomy surgery, in patients who used a single 300mg dose of pregabalin or placebo as preemptive analgesia, using the McGill pain questionnaire, which consists of 20 word groups , and each group can contain from 2 to 6 descriptive words, these descriptors are placed in an increasing order of magnitude in relation to the intensity. The left of each word has a numerical value in an attempt to represent the intensity of the descriptor. For the analysis of the answers, the total number of words chosen in each subgroup by the patient was used to qualify his pain, the minimum value being equal to 0 (zero), if the patient chose not to choose any descriptor, and the maximum value would be 20, as the patient can choose only one descriptor for each subgroup. The quantitative pain index was also evaluated, which represents the sum of the values of each descriptor chosen by the patient, with a minimum value of 0 and a maximum of 78. (NCT04495374)
Timeframe: End of the first postoperative day of abdominal hysterectomy surgery (24 hours after the end of surgery)

Interventionscore on a scale (Median)
Group P(0) - Placebo28.5
Group P(1) - Pregabalin 300mg12

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Total Post-operative Opioid Requirements With Non-opioid Drug Regimen

Total post-operative opioid requirements (opioid dose) were calculated for participants receiving the non-opioid drug regimen, among participants who required post-operative opioid medication. (NCT04766996)
Timeframe: Up to 5 weeks

Interventionmilligrams (Mean)
Prospective Cases Undergoing Non-opioid Drug Regimen400

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Nebraska Interprofessional Education Attitude Scale (NIPEAS) Score for Professional Staff Arm

The Nebraska Interprofessional Education Attitude Scale (NIPEAS) was developed to measure the attitudes of pre-clinical learners to practicing health professionals. The NIPEAS is a 19-item questionnaire assessing attitudes related to interprofessional collaboration. Responses were given using a 5-point Likert scale where 1 = Strongly Disagree to 5 = Strongly Agree. The total score is the average of the average scores for each item and ranges from 1 to 5. A higher total score indicates increased positive perceptions toward interprofessional collaboration. (NCT04766996)
Timeframe: Prior to protocol implementation (baseline), halfway through the recruitment period (2 months) and after the last participant has been discharged from the hospital (4 months)

Interventionscore on a scale (Mean)
Baseline
Professional Staff4.35

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Postoperative Pain After Cardiac Surgery

By using a NRS scale postoperative pain (at rest) at 48hours after cardiac surgery In a Numerical Rating Scale (NRS), patients are asked to circle the number between 0 and 10 . Zero usually represents 'no pain at all' whereas 10 represents 'the worst pain ever possible'. (NCT04987372)
Timeframe: At 48 hours after cardiac surgery

Interventionunits on a scale (Mean)
Classical Protocol2.28
Multimodal Protocol2.17

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(ICDSC)Delirium After Stop Sedation by Using Intensive Care Delirium Screening Checklist

delirium in the direct postoperative phase, by using the ICDSC (Intensive Care Delirium Screening Checklist) score. The ICDSC is score-based (range 0-8) where the ICDSC is positive when any four (or more) symptoms of delirium are present (i.e., altered level of consciousness, inattention, disorientation, hallucinations or delusions, psychomotor activity, inappropriate speech or mood, sleep disturbance or fluctuation of symptoms) (NCT04987372)
Timeframe: At 48 h after surgery

Interventionscore on a scale (Median)
Classical Protocol0.0
Multimodal Protocol0.0

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"Unipolar VAS for High - Maximum Effect (Emax)"

"Maximum effect on the 100 mm visual analog scale for the question I am feeling high where 0 = not at all and 100 = extremely" (NCT05053126)
Timeframe: up to 48 hours after treatment

InterventionScore on a 100 mm scale (Mean)
Placebo10.83
Oxycodone 20 mg85.83
Lyrica 300 mg55.83
Lyrica 450 mg60.43
Lyrica 300mg With Oxycodone 20 mg91.36
Lyrica 450 mg With Oxycodone 20 mg92.23

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"Unipolar VAS for Any Drug Effect"

"100 mm visual analog scale for the question At this moment, I can feel any drug effects where 0 = not at all and 100 = extremely" (NCT05053126)
Timeframe: up to 48 hours after treatment

InterventionScore on a 100 mm scale (Least Squares Mean)
Placebo2.14
Oxycodone 20 mg29.97
Lyrica 300 mg16.68
Lyrica 450 mg20.00
Lyrica 300mg With Oxycodone 20 mg36.55
Lyrica 450 mg With Oxycodone 20 mg40.98

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"Bipolar Visual Analog Scale (VAS) for Drug Liking Maximum Effect (Emax)."

"Drug liking assesses how much a participant likes or dislikes a drug effect at the time the question (at this moment, my liking this drug is) is being asked. It is scored using a 100 mm visual analogue scale (VAS), where 0 mm = Strong Disliking, 50 mm = Neither Like nor Dislike, and 100 mm = Strong Liking" (NCT05053126)
Timeframe: up to 48 hours after treatment

InterventionScore on a 100 mm scale (Mean)
Placebo54.30
Oxycodone 20 mg90.85
Lyrica 300 mg72.53
Lyrica 450 mg76.05
Lyrica 300mg With Oxycodone 20 mg96.11
Lyrica 450 mg With Oxycodone 20 mg95.06

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"Bipolar VAS for Take Drug Again"

"100 mm visual analog scale at 24, 36, and 48 hours post-dose for the question I would take this drug again where 0 = definitely not, 50 = neutral, and 100 = definitely so. The data from the 24, 36, and 48 hours postdose measurements were combined into a single overall model-adjusted value for 24 to 48 hours post-treatment timeframe by estimation from a mixed model with treatment, period, treatment sequence, time, and treatment*time as fixed effects, subject nested within sequence as a random effect. The compound symmetric covariance matrix was employed. Data from all time points were included" (NCT05053126)
Timeframe: Up to 48 hours after treatment (assessments were made at the following timepoints after each treatment for this outcome measure: 24, 36, and 48 hours)

InterventionScore on a 100 mm scale (Least Squares Mean)
Placebo53.58
Oxycodone 20 mg77.05
Lyrica 300 mg63.98
Lyrica 450 mg64.87
Lyrica 300mg With Oxycodone 20 mg77.91
Lyrica 450 mg With Oxycodone 20 mg75.92

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"Bipolar VAS for Overall Drug Liking"

"100 mm visual analog scale at 24, 36, and 48 hours post-dose for the question Overall, my liking for this drug is where 0 = definitely not, 50 = neutral, and 100 = definitely so. The data from the 24, 36, and 48 hours postdose measurements were combined into a single overall model-adjusted value for 24 to 48 hours post-treatment timeframe by estimation from a mixed model with treatment, period, treatment sequence, time, and treatment*time as fixed effects, subject nested within sequence as a random effect. The compound symmetric covariance matrix was employed. Data from all time points were included" (NCT05053126)
Timeframe: Up to 48 hours after treatment (assessments were made at the following timepoints after each treatment for this outcome measure: 24, 36, and 48 hours)

InterventionScore on a 100 mm scale (Least Squares Mean)
Placebo53.74
Oxycodone 20 mg75.73
Lyrica 300 mg60.14
Lyrica 450 mg63.54
Lyrica 300mg With Oxycodone 20 mg74.86
Lyrica 450 mg With Oxycodone 20 mg75.01

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