CClinicalTrials.gg
CompletedNCT00883740Updated Jan 25, 2021Results posted

Effects Of Pregabalin (Lyrica) On Sleep Maintenance In Subjects With Fibromyalgia

A Phase 3 interventional study of Pregabalin and Placebo in Fibromyalgia and Sleep Disorders, sponsored by Pfizer's Upjohn has merged with Mylan to form Viatris Inc.. Completed at 50 sites in 3 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-01-25.

Sponsored by Pfizer's Upjohn has merged with Mylan to form Viatris Inc. · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
119
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of the study is to demonstrate the effect of Lyrica on Wake after sleep onset in subjects with fibromyalgia with sleep maintenance disturbance (on polysomnogram)

02

Conditions studied

  • Fibromyalgia
  • Sleep Disorders

Keywords

  • Fibromyalgia sleep maintenance disturbance pregabalin
03

In context

Fibromyalgia

1,336 studies on the registry are indexed under Fibromyalgia; 266 are open to participants now.

This study's enrollment of 119 is above the median of 60 across 1,035 interventional studies indexed under Fibromyalgia.

Browse Fibromyalgia studies →

Lead sponsor

Pfizer's Upjohn has merged with Mylan to form Viatris Inc. is the lead sponsor of 431 studies on the registry; none are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 8 (89%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Subjects must meet diagnostic criteria for fibromyalgia;
  • Subjects must report difficulty in maintaining sleep at least 3 times per week and meet Research Diagnostic Criteria (RDC) for insomnia disorder, corroborated by subject diary, and meet PSG inclusion criteria at visit 3.

Exclusion criteria

Exclusion Criteria:

  • History of active sleep disorder other than Research Diagnostic Criteria(RDC) insomnia criteria or any sleep or circadian rhythm disturbance;
  • Use of medications known to affect sleep wake function by Visit 2;
  • Involved in night or rotating shift work, or travel across >4 time zones 14 days prior to screening and during study; regular daytime napping
  • PSG finding of apnea/hypopnea or periodic limb movement with arousal index >10/hr on either night of PSG.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Investigator)
Enrollment
119 participants (actual)

Study arms

  • Experimental
    Lyrica

    flexible dosing Lyrica 300-450mg/day

    Drug: Pregabalin

  • Placebo comparator
    Placebo

    Placebo

    Drug: Placebo

Interventions

  • DrugPregabalin

    Capsule, flexible dosing double-blind. Treatment duration is approximately 4 weeks titrated to 300-450 mg/day

  • DrugPlacebo

    Capsule, flexible dosing double-blind. Treatment duration is approximately 4 weeks

06

What researchers measure

Primary outcomes

  1. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or Early Termination (ET)

Secondary outcomes

  1. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  2. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  3. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  4. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  5. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  6. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  7. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  8. 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).

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  9. 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).

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  10. 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.

    Time frame: Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET

  11. 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.

    Time frame: 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

  12. 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.

    Time frame: 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

  13. 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.

    Time frame: Weeks 1, 2, 3 and 4 of Each Intervention Period or ET

  14. 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.

    Time frame: Weeks 1, 2, 3 and 4 of Each Intervention Period or ET

  15. 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.

    Time frame: Daily up to Day 73 or ET

  16. 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.

    Time frame: Weeks 1, 2, 3 and 4 of Each Intervention Period or ET

  17. 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.

    Time frame: Weeks 1, 2, 3 and 4 of Each Intervention Period or ET

07

Results

Posted Aug 10, 2011
Limitations and caveats
The protocol specified analyses of secondary outcome measures (OMs) indicated OMs would use PP population; however all secondary OMs were analyzed using the ITT population in accordance with the statistical analysis plan.

Participant flow

First Intervention
Participant flow — First Intervention
MilestonePlacebo, Then PregabalinPregabalin, Then Placebo
Started6059
Completed5351
Not completed78
Withdrew: Lost to follow-up10
Withdrew: No longer willing to participate20
Withdrew: Protocol violation36
Withdrew: Adverse event12
Taper and Washout Period (2 Weeks)
Participant flow — Taper and Washout Period (2 Weeks)
MilestonePlacebo, Then PregabalinPregabalin, Then Placebo
Started5451
Completed5451
Not completed00
Second Intervention
Participant flow — Second Intervention
MilestonePlacebo, Then PregabalinPregabalin, Then Placebo
Started5351
Completed5250
Not completed11
Withdrew: Protocol violation10
Withdrew: No longer willing to participate01

Outcome measures

PrimaryWake 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or Early Termination (ET)
Reported as:
Least squares mean · Minutes
Wake After Sleep Onset (WASO) at Weeks 5 and 11
MinutesPlaceboPregabalin
Wake After Sleep Onset (WASO) at Weeks 5 and 1170.69 ± 3.7851.54 ± 3.78
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -19.15 · 95% CI -26.69 to -11.61
SecondaryWake 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Minutes
Wake Time During Sleep (WTDS)
MinutesPlaceboPregabalin
Wake Time During Sleep (WTDS)63.38 ± 2.9045.83 ± 2.93
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -17.54 · 95% CI -23.29 to -11.80
SecondaryWake 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Minutes
Wake Time After Sleep (WTAS)
MinutesPlaceboPregabalin
Wake Time After Sleep (WTAS)9.19 ± 1.557.38 ± 1.57
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.3841 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -1.81 · 95% CI -5.92 to 2.30
SecondaryTotal 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Minutes
Total Sleep Time (TST)
MinutesPlaceboPregabalin
Total Sleep Time (TST)370.6 ± 4.65396.2 ± 4.69
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 25.54 · 95% CI 17.48 to 33.61
SecondarySleep 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Percentage of time asleep
Sleep Efficiency (SE)
Percentage of time asleepPlaceboPregabalin
Sleep Efficiency (SE)77.21 ± 0.9782.64 ± 0.98
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 5.42 · 95% CI 3.74 to 7.11
SecondaryNumber 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Awakenings
Number of Awakenings After Sleep Onset (NAASO 1)
AwakeningsPlaceboPregabalin
Number of Awakenings After Sleep Onset (NAASO 1)26.92 ± 1.0024.51 ± 1.00
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0135 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -2.41 · 95% CI -4.31 to -0.51
SecondaryNumber 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Awakenings
Number of Awakenings After Sleep Onset (NAASO 2)
AwakeningsPlaceboPregabalin
Number of Awakenings After Sleep Onset (NAASO 2)10.16 ± 0.448.63 ± 0.45
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0008 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -1.53 · 95% CI -2.41 to -0.66
SecondaryLatency 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Minutes
Latency to Persistent Sleep (LPS)
MinutesPlaceboPregabalin
Latency to Persistent Sleep (LPS)41.63 ± 3.7034.45 ± 3.74
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0447 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -7.18 · 95% CI -14.18 to -0.17
SecondaryWASO 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).

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Minutes
WASO by Hour of the Night
MinutesPlaceboPregabalin
Hour 11.96 ± 0.271.62 ± 0.28
Hour 25.66 ± 0.524.56 ± 0.53
Hour 37.09 ± 0.544.65 ± 0.55
Hour 48.95 ± 0.755.43 ± 0.75
Hour 510.55 ± 0.907.54 ± 0.90
Hour 611.26 ± 0.947.38 ± 0.95
Hour 710.96 ± 0.918.38 ± 0.92
Hour 817.08 ± 1.3414.23 ± 1.35
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.3613 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -0.34 · 95% CI -1.07 to 0.39
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0686 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -1.10 · 95% CI -2.29 to 0.09
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0009 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -2.44 · 95% CI -3.85 to -1.03
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0002 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -3.52 · 95% CI -5.33 to -1.71
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0065 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -3.01 · 95% CI -5.16 to -0.86
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0024 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -3.89 · 95% CI -6.36 to -1.41
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0366 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -2.59 · 95% CI -5.01 to -0.16
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0593 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -2.85 · 95% CI -5.82 to 0.11
SecondaryWASO 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).

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Minutes
WASO by Each Quarter of the Night
MinutesPlaceboPregabalin
Quarter 17.23 ± 0.635.98 ± 0.64
Quarter 216.04 ± 1.0510.04 ± 1.06
Quarter 321.73 ± 1.5814.90 ± 1.60
Quarter 428.04 ± 1.9822.60 ± 2.00
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.1106 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -1.25 · 95% CI -2.79 to 0.29
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -6.00 · 95% CI -8.49 to -3.51
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0004 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -6.83 · 95% CI -10.53 to -3.13
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0199 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -5.44 · 95% CI -10.00 to -0.88
SecondarySlow 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.

Time frame:
Week 5 (End of Intervention Period 1) and Week 11 (End of Intervention Period 2) or ET
Reported as:
Least squares mean · Percentage of total sleep time
Slow Wave Sleep (SWS)
Percentage of total sleep timePlaceboPregabalin
Slow Wave Sleep (SWS)15.04 ± 1.0117.18 ± 1.01
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0024 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 2.14 · 95% CI 0.78 to 3.50
SecondaryChange 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.

Time frame:
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
Reported as:
Least squares mean · Units on a scale
Change From Baseline in MOS-SS Sleep Disturbance at Weeks 5 and 11
Units on a scalePlaceboPregabalin
Change Week 1 to Week 5 (n=59, 56)-19.0 ± 2.98-27.1 ± 3.06
Change Week 7 to Week 11 (n=50, 52)-2.23 ± 3.10-21.0 ± 3.04
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0591 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -8.13 · 95% CI -16.59 to 0.32
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -18.81 · 95% CI -27.43 to -10.20
SecondaryChange 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.

Time frame:
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
Reported as:
Least squares mean · Units on a scale
Change From Baseline in MOS-SS Sleep Problems Index II Weeks 5 and 11
Units on a scalePlaceboPregabalin
Change Week 1 to Week 5 (n=59, 56)-16.4 ± 2.37-21.9 ± 2.43
Change Week 7 to Week 11 (50, 52)-0.98 ± 2.51-14.4 ± 2.46
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.1101 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -5.47 · 95% CI -12.20 to 1.26
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0002 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -13.39 · 95% CI -20.36 to -6.42
SecondarySleep 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.

Time frame:
Weeks 1, 2, 3 and 4 of Each Intervention Period or ET
Reported as:
Least squares mean · Unit on a scale
Sleep Quality
Unit on a scalePlaceboPregabalin
Week 14.79 ± 0.165.70 ± 0.17
Week 24.95 ± 0.186.09 ± 0.18
Week 35.09 ± 0.175.96 ± 0.17
Week 45.17 ± 0.176.06 ± 0.17
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 0.91 · 95% CI 0.58 to 1.24
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 1.14 · 95% CI 0.76 to 1.53
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 0.87 · 95% CI 0.46 to 1.28
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 0.89 · 95% CI 0.51 to 1.26
SecondaryLatency 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.

Time frame:
Weeks 1, 2, 3 and 4 of Each Intervention Period or ET
Reported as:
Least squares mean · Minutes
Latency of Sleep Onset (LSO)
MinutesPlaceboPregabalin
Week 151.23 ± 2.6143.56 ± 2.61
Week 249.94 ± 2.9242.27 ± 2.92
Week 348.92 ± 4.0143.24 ± 4.02
Week 446.70 ± 2.6840.51 ± 2.68
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -7.66 · 95% CI -11.44 to -3.89
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0077 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -7.67 · 95% CI -13.27 to -2.07
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.2196 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -5.68 · 95% CI -14.81 to 3.44
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0081 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -6.18 · 95% CI -10.73 to -1.64
SecondaryDaily 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.

Time frame:
Daily up to Day 73 or ET
Reported as:
Least squares mean · Units on a scale
Daily Pain Score
Units on a scalePlaceboPregabalin
Week 16.12 ± 0.185.42 ± 0.18
Week 25.81 ± 0.185.10 ± 0.18
Week 35.73 ± 0.195.14 ± 0.19
Week 45.44 ± 0.204.92 ± 0.20
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -0.70 · 95% CI -1.02 to -0.37
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -0.71 · 95% CI -1.06 to -0.36
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0014 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -0.59 · 95% CI -0.95 to -0.24
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0084 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -0.52 · 95% CI -0.90 to -0.14
SecondarySubjective 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.

Time frame:
Weeks 1, 2, 3 and 4 of Each Intervention Period or ET
Reported as:
Least squares mean · Minutes
Subjective Wake After Sleep Onset (sWASO)
MinutesPlaceboPregabalin
Week 180.86 ± 3.7162.59 ± 3.73
Week 275.48 ± 3.9159.43 ± 3.92
Week 374.97 ± 4.7561.73 ± 4.76
Week 469.65 ± 4.2059.40 ± 4.21
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -18.27 · 95% CI -27.02 to -9.52
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0002 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -16.06 · 95% CI -24.24 to -7.87
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0085 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -13.23 · 95% CI -23.01 to -3.46
  • Placebo vs Pregabalin · linear mixed effects model · p = 0.0102 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): -10.25 · 95% CI -18.01 to -2.48
SecondarySubjective 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.

Time frame:
Weeks 1, 2, 3 and 4 of Each Intervention Period or ET
Reported as:
Least squares mean · Minutes
Subjective Total Sleep Time (sTST)
MinutesPlaceboPregabalin
Week 1336.8 ± 5.40361.7 ± 5.41
Week 2341.9 ± 5.76371.3 ± 5.77
Week 3344.1 ± 5.73370.9 ± 5.74
Week 4352.5 ± 5.60377.9 ± 5.61
Statistical analysis
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 24.82 · 95% CI 13.25 to 36.40
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 29.40 · 95% CI 18.59 to 40.21
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 26.79 · 95% CI 15.37 to 38.21
  • Placebo vs Pregabalin · linear mixed effects model · p = <0.0001 (P-value is based on a linear mixed effects model including sequence, period, and treatment as fixed factors and participant within sequence and within participant error as random factors.) · Mean difference (final values): 25.44 · 95% CI 15.03 to 35.86

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Placebo—0/111 (0%)21/111 (18.9%)
Pregabalin—0/112 (0%)51/112 (45.5%)
Most frequent other events
Most frequent other events
EventPlaceboPregabalin
dizzinessNervous system disorders11/11134/112
somnolenceNervous system disorders5/11123/112
headacheNervous system disorders9/11110/112
nauseaGastrointestinal disorders3/1118/112

Baseline characteristics

Age, Continuous
Age, Continuous(Years)Entire Study Population
Mean48.4 ± 9.9
Sex: Female, Male
Sex: Female, Male(Participants)Entire Study Population
Female103
Male16
Medical Outcome Study Sleep Scale (MOS-SS) Sleep Disturbance Baseline Measure (Weeks 1 and 7)
Medical Outcome Study Sleep Scale (MOS-SS) Sleep Disturbance Baseline Measure (Weeks 1 and 7)(Scores on a Scale)Entire Study Population
Week 1 Sleep Disturbance Placebo69.32 ± 17.48
Week 1 Sleep Disturbance Pregabalin69.29 ± 20.44
Week 7 Sleep Disturbance Placebo52.75 ± 24.77
Week 7 Sleep Disturbance Pregabalin51.51 ± 26.48
MOS-SS Overall Sleep Index II Baseline Measure (Weeks 1 and 7)
MOS-SS Overall Sleep Index II Baseline Measure (Weeks 1 and 7)(Scores on a Scale)Entire Study Population
Week 1 Sleep Problems Index II Placebo62.82 ± 12.96
Week 1 Sleep Problems Index II Pregabalin63.21 ± 14.27
Week 7 Sleep Problems Index II Placebo47.22 ± 18.38
Week 7 Sleep Problems Index II Pregablin48.79 ± 19.89
08

Study locations

50 sites
  • Pfizer Investigational Site
    Phoenix, Arizona 85013, United States
  • Pfizer Investigational Site
    Phoenix, Arizona 85020, United States
  • Pfizer Investigational Site
    Tucson, Arizona 85741, United States
  • Pfizer Investigational Site
    San Diego, California 92102, United States
  • Pfizer Investigational Site
    Colorado Springs, Colorado 80909, United States
  • Pfizer Investigational Site
    DeLand, Florida 32720, United States
  • Pfizer Investigational Site
    Hallandale Beach, Florida 33009, United States
  • Pfizer Investigational Site
    Orange City, Florida 32763, United States
  • Pfizer Investigational Site
    Pembroke Pines, Florida 33026, United States
  • Pfizer Investigational Site
    South Miami, Florida 33143, United States
  • Pfizer Investigational Site
    Atlanta, Georgia 30342, United States
  • Pfizer Investigational Site
    Chicago, Illinois 60634, United States
  • Pfizer Investigational Site
    Overland Park, Kansas 66212, United States
  • Pfizer Investigational Site
    Crestview Hills, Kentucky 41017, United States
  • Pfizer Investigational Site
    Louisville, Kentucky 40217, United States
  • Pfizer Investigational Site
    Baton Rouge, Louisiana 70809, United States
  • Pfizer Investigational Site
    Hattiesburg, Mississippi 39401, United States
  • Pfizer Investigational Site
    Hattiesburg, Mississippi 39402, United States
  • Pfizer Investigational Site
    Raleigh, North Carolina 27612, United States
  • Pfizer Investigational Site
    Beachwood, Ohio 44122, United States
  • Pfizer Investigational Site
    Cleveland, Ohio 44122, United States
  • Pfizer Investigational Site
    Oklahoma City, Oklahoma 73103, United States
  • Pfizer Investigational Site
    Oklahoma City, Oklahoma 73112, United States
  • Pfizer Investigational Site
    Duncansville, Pennsylvania 16635, United States
  • Pfizer Investigational Site
    Philadelphia, Pennsylvania 19114, United States
  • Pfizer Investigational Site
    Philadelphia, Pennsylvania 19139, United States
  • Pfizer Investigational Site
    Columbia, South Carolina 29201, United States
  • Pfizer Investigational Site
    Dallas, Texas 75230, United States
  • Pfizer Investigational Site
    Dallas, Texas 75248, United States
  • Pfizer Investigational Site
    Houston, Texas 77063, United States
  • Pfizer Investigational Site
    Calgary, Alberta T2X 3V4, Canada
  • Pfizer Investigational Site
    Edmonton, Alberta T5R 5W5, Canada
  • Pfizer Investigational Site
    Kelowna, British Columbia V1Y 3G8, Canada
  • Pfizer Investigational Site
    Kelowna, British Columbia V1Y 4R9, Canada
  • Pfizer Investigational Site
    Mississauga, Ontario L5B 4M4, Canada
  • Pfizer Investigational Site
    Point Edward, Ontario N7V 1X4, Canada
  • Pfizer Investigational Site
    Thornhill, Ontario L4J 6X2, Canada
  • Pfizer Investigational Site
    Toronto, Ontario M3H 3V6, Canada
  • Pfizer Investigational Site
    Toronto, Ontario M4P 1P2, Canada
  • Pfizer Investigational Site
    Toronto, Ontario M6J 3S3, Canada
  • Pfizer Investigational Site
    Berlin, 10117, Germany
  • Pfizer Investigational Site
    Berlin, 10969, Germany
  • Pfizer Investigational Site
    Berlin, 12683, Germany
  • Pfizer Investigational Site
    Berlin, 13125, Germany
  • Pfizer Investigational Site
    Chemnitz, 09111, Germany
  • Pfizer Investigational Site
    Goeppingen, 73033, Germany
  • Pfizer Investigational Site
    Goeppingen, 73035, Germany
  • Pfizer Investigational Site
    Muenchen, 80336, Germany
  • Pfizer Investigational Site
    Muenchen, 81675, Germany
  • Pfizer Investigational Site
    Schwerin, 19053, Germany
09

References and documents

Publications

  • Roth T, Lankford DA, Bhadra P, Whalen E, Resnick EM. Effect of pregabalin on sleep in patients with fibromyalgia and sleep maintenance disturbance: a randomized, placebo-controlled, 2-way crossover polysomnography study. Arthritis Care Res (Hoboken). 2012 Apr;64(4):597-606. doi: 10.1002/acr.21595. PubMed 22232085 ↗
10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 25, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00883740
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Responsible party
Sponsor
First posted
Apr 20, 2009
Start date
Jun 2009
Primary completion
Jun 2010
Completion
Jun 2010
Results posted
Aug 10, 2011
Last update
Jan 25, 2021

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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