Study Of The Efficacy And Safety Of Pregabalin Compared To Placebo For Treatment Of Post-Surgical Pain From Hysterectomy

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.

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.

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.

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.

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.

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.

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.

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.

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.

The amounts of non-opioid rescue medications, paracetamol, used by the participants during the study, including anti-emetic medications.

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

The amounts of non-opioid rescue medications, ibuprofen, used by the participants during the study, including anti-emetic medications.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.