A 2-Year Phase 3 Study Of CP-690,550 In Patients With Active Rheumatoid Arthritis On Background Methotrexate

Phase 3

Completed

Conditions: Arthritis, Rheumatoid

Interventions: Drug: Placebo
Drug: CP-690,550

Registration Number: NCT00847613

Lead Sponsor: Pfizer

Brief Summary: This study is designed to provide safety and efficacy data to support the development of CP-690,550 in patients with moderate to severe rheumatoid arthritis on background of methotrexate.

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 800

Inclusion Criteria

Adults with moderate to severe rheumatoid arthritis on a stable dose of methotrexate

Exclusion Criteria

Pregnancy, severe acute or chronic medical conditions, including serious infections or clinically significant laboratory abnormalities.

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Sequence 3	Placebo	-
Sequence 3	CP-690,550	-
Sequence 4	Placebo	-
Sequence 4	CP-690,550	-
Sequence 1	CP-690,550	-
Sequence 2	CP-690,550	-

Primary Outcome Measures

Name	Time	Method
Percentage of Participants Achieving American College of Rheumatology 20% (ACR20) Response at Month 6	Month 6	ACR20 response: greater than or equal to (\>=) 20 percent (%) improvement in tender joint count; \>=20% improvement in swollen joint count; and \>=20% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of the Health Assessment Questionnaire \[HAQ\]); and C-Reactive Protein (CRP). For comparison of CP-690,550 with placebo, placebo sequences were combined into single reporting group for Month 6 analysis.
Changes From Baseline in Modified Total Sharp Score (mTSS) at Month 6	Baseline, Month 6	mTSS = sum of erosion and Joint Space Narrowing (JSN) scores for 44 joints (16 per hand and 6 per foot). mTSS scores ranged from 0 (normal) to 448 (worst possible total score). Change: scores at observation minus score at baseline. An increase in mTSS from baseline represented disease progression and/or joint worsening, no change represented halting of disease progression, and a decrease represented improvement. For comparison of CP-690,550 with placebo, placebo sequences were combined into single reporting group for Month 6 analysis.
Percentage of Participant With Disease Activity Score Using 28-Joint Count and Erythrocyte Sedimentation Rate (4 Variables) (DAS28-4 [ESR]) Less Than 2.6 at Month 6	Month 6	DAS28-4 (ESR) calculated from swollen joint count (SJC) and tender/painful joint count (TJC) using 28 joint count, erythrocyte sedimentation rate (ESR) (millimeters per hour \[mm/hour\]) and patient's global assessment (PtGA) of disease activity (transformed score ranging 0 to 10; higher score indicated greater affectation due to disease activity). Total score range:0 to 9.4, higher score indicated more disease activity. DAS28-4 (ESR) less than or equal to (=\<) 3.2 implied low disease activity, greater than (\>) 3.2 to 5.1 implied moderate to high disease activity and less than (\<) 2.6=remission. For comparison of CP-690,550 with placebo, placebo sequences were combined into single reporting group for Month 6 analysis.
Change From Baseline in Health Assessment Questionnaire-Disability Index (HAQ-DI) Score at Month 3	Baseline, Month 3	HAQ-DI: participant-reported assessment of ability to perform tasks in 8 categories of daily living activities: dress/groom, arise, eat, walk, reach, grip, hygiene and common activities over past week. Each item scored on 4-point scale, 0 to 3: 0=no difficulty; 1=some difficulty;2=much difficulty; 3=unable to do. Overall score was computed as sum of domain sc ores and divided by number of domains answered. Total possible score range 0-3: 0=least difficulty and 3=extreme difficulty. For comparison of CP-690,550 with placebo, placebo sequences were combined into single reporting group for Month 3 analysis.

Secondary Outcome Measures

Name	Time	Method
Physician Global Assessment (PGA) of Arthritis at Baseline, Month 1, 3 and 6	Baseline, Month 1, 3, 6	Physician Global Assessment of Arthritis was measured on a 0 to 100 mm VAS, where 0 mm = very good and 100 mm = very bad.
Percentage of Participants Achieving American College of Rheumatology 20% (ACR20) at Month 1 and 3	Month 1, 3	ACR20 response: \>=20% improvement in tender joint count; \>=20% improvement in swollen joint count; and \>=20% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of HAQ); and CRP.
Percentage of Participants Achieving American College of Rheumatology 20% (ACR20) at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	ACR20 response: \>=20% improvement in tender joint count; \>=20% improvement in swollen joint count; and \>=20% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of HAQ); and CRP.
Percentage of Participants Achieving American College of Rheumatology 50% (ACR50) at Month 1, 3 and 6	Month 1, 3, 6	ACR50 response: greater than or equal to \>=50% improvement in tender joint count; \>=50% improvement in swollen joint count; and \>=50% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of HAQ); and CRP.
Percentage of Participants Achieving American College of Rheumatology 50% (ACR50) at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	ACR50 response: greater than or equal to \>=50% improvement in tender joint count; \>=50% improvement in swollen joint count; and \>=50% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of HAQ); and CRP.
Percentage of Participants Achieving American College of Rheumatology 70% (ACR70) at Month 1, 3 and 6	Month 1, 3, 6	ACR70 response: \>=70% improvement in tender joint count; \>=70% improvement in swollen joint count; and \>=70% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of HAQ); and CRP.
Percentage of Participants Achieving American College of Rheumatology 70% (ACR70) at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	ACR70 response: \>=70% improvement in tender joint count; \>=70% improvement in swollen joint count; and \>=70% improvement in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of HAQ); and CRP.
Number of Days as Assessed Using RA-HCRU at Month 12, 18 and 24	Month 12, 18, 24	RA-HCRU assessed healthcare usage during previous 3 months for direct or indirect medical cost domains.Any RA or non-RA related number of days spent in hospital, nursing home, aids/devices used, on sick leave, work per week, performed part time work, performed paid work, chores done by housekeeper and chores done by family/friends.
Number of Hours Per Day as Assessed RA-HCRU at Baseline, Month 3 and 6	Baseline, Month 1, 3, 6	RA-HCRU assessed healthcare usage during previous 3 months for direct or indirect medical cost domains. Any RA or non-RA related number of hours spent per day for home healthcare services, chores done by housekeeper, chores done by family or friends, work done and work missed were reported.
Number of Hours Per Day as Assessed RA-HCRU at Month 12, 18 and 24	Month 12, 18, 24	RA-HCRU assessed healthcare usage during previous 3 months for direct or indirect medical cost domains. Any RA or non-RA related number of hours spent per day for home healthcare services, chores done by housekeeper, chores done by family or friends, work done and work missed were reported.
Disease Activity Score Using 28-Joint Count and C-Reactive Protein (3 Variables) (DAS28-3 [CRP]) at Baseline, Month 1, 3 and 6	Baseline, Month 1, 3, 6	DAS28-3 (CRP) was calculated from SJC and TJC using 28 joint count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3 (CRP) =\<3.2 implied low disease activity, \>3.2 to 5.1 implied moderate to high disease activity and \<2.6 implied remission.
Disease Activity Score Using 28-Joint Count and C-Reactive Protein (3 Variables) (DAS28-3 [CRP]) at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	DAS28-3 (CRP) was calculated from SJC and TJC using 28 joint count and CRP (mg/L). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3 (CRP) =\<3.2 indicated low disease activity, \>3.2 to 5.1 indicated moderate to high disease activity and \<2.6 = remission.
Disease Activity Score Using 28-Joint Count and Erythrocyte Sedimentation Rate (4 Variables) (DAS28-4 [ESR]) at Baseline, Month 1, 3 and 6	Baseline, Month 1, 3, 6	DAS28-4 (ESR) calculated from SJC and TJC using 28 joint count, ESR (mm/hour) and PGA of disease activity (participant rated arthritis activity assessment with transformed score ranging 0 to 10; higher score indicated greater affectation due to disease activity). Total score range:0 to 9.4, higher score indicated more disease activity. DAS28-4 (ESR) =\<3.2 implied low disease activity, \>3.2 to 5.1 implied moderate to high disease activity and \<2.6 implied remission.
Disease Activity Score Using 28-Joint Count and Erythrocyte Sedimentation Rate (4 Variables) (DAS28-4 [ESR]) at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	DAS28-4 (ESR) calculated from SJC and TJC using 28 joint count, ESR (mm/hour) and PtGA of disease activity (participant rated arthritis activity assessment with transformed score ranging 0 to 10; higher score indicated greater affectation due to disease activity). Total score range:0 to 9.4, higher score indicated more disease activity. DAS28-4 (ESR) =\<3.2 implied low disease activity, \>3.2 to 5.1 implied moderate to high disease activity and \<2.6 implied remission.
Disease Activity Score Using 28-Joint Count and C-Reactive Protein (4 Variables) (DAS28-4 [CRP])	Baseline, Month 1, 3, 6, 9, 12, 15, 18, 21, 24	DAS28-4 (CRP) was calculated from SJC and TJC using the 28 joints count, CRP \[mg/L\] and PtGA of disease activity (participant rated arthritis activity assessment with transformed scores ranging 0 to 10; higher scores indicated greater affectation due to disease activity). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-4 \[CRP\] \<=3.2 implied low disease activity, DAS28-4 \[CRP\] \>3.2 to 5.1 implied moderate to high disease activity and DAS28 \<2.6 implied remission.
Disease Activity Score Using 28-Joint Count and Erythrocyte Sedimentation Rate (3 Variables) (DAS28-3 [ESR])	Baseline, Month 1, 3, 6, 9, 12, 15, 18, 21, 24	DAS28-3 (ESR) was calculated from the number of SJC and TJC using the 28 joints count and ESR (mm/hr). Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28-3 (ESR) \<=3.2 implied low disease activity, \>3.2 to 5.1 implied moderate to high disease activity and \<2.6 implied remission.
Modified Total Sharp Scores (mTSS) at Baseline	Baseline	mTSS = sum of erosion and JSN scores for 44 joints (16 per hand and 6 per foot). mTSS scores ranged from 0 (normal) to 448 (worst possible total score). An increase in mTSS from baseline represented disease progression and/or joint worsening, no change represented halting of disease progression, and a decrease represented improvement.
Modified Total Sharp Scores (mTSS) at Month 12 and 24	Month 12, 24	mTSS = sum of erosion and JSN scores for 44 joints (16 per hand and 6 per foot). mTSS scores ranged from 0 (normal) to 448 (worst possible total score). An increase in mTSS from baseline represented disease progression and/or joint worsening, no change represented halting of disease progression, and a decrease represented improvement.
Health Assessment Questionnaire Disability Index (HAQ-DI) at Baseline, Month 1, 3 and 6	Baseline, Month 1, 3, 6	HAQ-DI: participant-reported assessment of ability to perform tasks in 8 categories of daily living activities: dress/groom; arise; eat; walk; reach; grip; hygiene; and common activities over past week. Each item scored on 4-point scale from 0 to 3: 0=no difficulty; 1=some difficulty; 2=much difficulty; 3=unable to do. Overall score was computed as the sum of domain scores and divided by the number of domains answered. Total possible score range 0-3 where 0=least difficulty and 3=extreme difficulty.
Health Assessment Questionnaire Disability Index (HAQ-DI) at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	HAQ-DI: participant-reported assessment of ability to perform tasks in 8 categories of daily living activities: dress/groom; arise; eat; walk; reach; grip; hygiene; and common activities over past week. Each item scored on 4-point scale from 0 to 3: 0=no difficulty; 1=some difficulty; 2=much difficulty; 3=unable to do. Overall score was computed as the sum of domain scores and divided by the number of domains answered. Total possible score range 0-3 where 0=least difficulty and 3=extreme difficulty.
Patient Assessment of Arthritis Pain at Baseline, Month 1, 3 and 6	Baseline, Month 1, 3, 6	Participants rated the severity of arthritis pain on a 0 to 100 millimeter (mm) visual analogue scale (VAS), where 0 mm = no pain and 100 mm = most severe pain.
Patient Global Assessment (PtGA) of Arthritis Pain at Baseline, Month 1, 3, and 6	Baseline, Month 1, 3, 6	Participants answered: "Considering all the ways your arthritis affects you, how are you feeling today?" Participants responded by using a 0 - 100 mm VAS where 0 = very well and 100 = very poorly.
Patient Global Assessment (PtGA) of Arthritis Pain at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	Participants answered: "Considering all the ways your arthritis affects you, how are you feeling today?" Participants responded by using a 0 - 100 mm VAS where 0 = very well and 100 = very poorly.
Patient Assessment of Arthritis Pain at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	Participants rated the severity of arthritis pain on a 0 to 100 mm visual analogue scale (VAS), where 0 mm = no pain and 100 mm = most severe pain.
Physician Global Assessment (PGA) of Arthritis at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	Physician Global Assessment of Arthritis was measured on a 0 to 100 mm VAS, where 0 mm = very good and 100 mm = very bad.
36-Item Short-Form Health Survey (SF-36) at Baseline, Month 1, 3 and 6	Baseline, Month 1, 3, 6	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.
36-Item Short-Form Health Survey (SF-36) at Month 9, 12, 15, 18, 21 and 24	Month 9, 12, 15, 18, 21, 24	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.
Medical Outcomes Study Sleep Scale (MOS-SS) at Baseline, Month 1, 3 and 6	Baseline, Month 1, 3, 6	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 or no). 9 item index measures of sleep disturbance provide composite scores: sleep problem summary, overall sleep problem. Except Adequacy, Optimal, Quantity of sleep, 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.
Number of Participants With Optimal Sleep Assessed Using Medical Outcomes Study Sleep Scale (MOS-SS) at Baseline, Month 1, 3 and 6	Baseline, Month 1, 3, 6	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. Number of participants with optimal sleep are reported.
Medical Outcomes Study Sleep Scale (MOS-SS) at Month 12, 18 and 24	Month 12, 18, 24	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 or no). 9 item index measures of sleep disturbance provide composite scores: sleep problem summary, overall sleep problem. Except Adequacy, Optimal, Quantity of sleep, 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.
Number of Participants With Optimal Sleep Assessed Using Medical Outcomes Study Sleep Scale (MOS-SS) at Month 12, 18 and 24	Month 12, 18, 24	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. Number of participants with optimal sleep are reported.
Functional Assessment of Chronic Illness Therapy (FACIT)-Fatigue Scale at Baseline, Month 1, 3, and 6	Baseline, Month 1, 3, 6	FACIT-Fatigue is a 13-item questionnaire. Participant scored each item on a 5-point scale: 0 (Not at all) to 4 (Very much). The larger the participant's response to the questions (with the exception of 2 negatively stated), the greater the fatigue. For all questions, except for the 2 negatively stated ones, the code was reversed and a new score was calculated as 4 minus the participant's response. The sum of all responses resulted in the FACIT-Fatigue score for a total possible score of 0 (worse score) to 52 (better score). A higher score reflected an improvement in the participant's health status.
Functional Assessment of Chronic Illness Therapy (FACIT)-Fatigue Scale at Month 12, 18 and 24	Month 12, 18, 24	FACIT-Fatigue is a 13-item questionnaire. Participant scored each item on a 5-point scale: 0 (Not at all) to 4 (Very much). The larger the participant's response to the questions (with the exception of 2 negatively stated), the greater the fatigue. For all questions, except for the 2 negatively stated ones, the code was reversed and a new score was calculated as 4 minus the participant's response. The sum of all responses resulted in the FACIT-Fatigue score for a total possible score of 0 (worse score) to 52 (better score). A higher score reflected an improvement in the participant's health status.
Euro Quality of Life (EQ-5D)- Health State Profile Utility Score at Baseline, Month 3 and 6	Baseline, Month 3, 6	EQ-5D: participant 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 ("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.
Euro Quality of Life (EQ-5D)- Health State Profile Utility Score at Month 12, 18 and 24	Month 12, 18, 24	EQ-5D: participant 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 ("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.
Work Limitations Questionnaire (WLQ) Score at Baseline, Month 3 and 6	Baseline, Month 3, 6	WLQ: participant-reported 25-item scale to evaluate degree to which health problems interfere with an ability to perform job roles along 4 dimensions: Time Management scale (5-items); Physical Demands scale (6-item); Mental-Interpersonal Demands Scale (9-items); Output Demands scale (5-items). All the scales ranged from 0 (limited none of the time) to 100 (limited all of the time). Work Loss Index, which represented percentage of lost work over time period relative to a normative population, was derived (total score:0\[no loss\] to 100\[complete loss of work\]).
Work Limitations Questionnaire (WLQ) Score at Month 12, 18 and 24	Month 12, 18, 24	WLQ: participant-reported 25-item scale to evaluate degree to which health problems interfere with an ability to perform job roles along 4 dimensions: Time Management scale (5-items); Physical Demands scale (6-item); Mental-Interpersonal Demands Scale (9-items); Output Demands scale (5-items). All the scales ranged from 0 (limited none of the time) to 100 (limited all of the time). Work Loss Index, which represented percentage of lost work over time period relative to a normative population, was derived (total score:0\[no loss\] to 100\[complete loss of work\]).
Work Productivity and Healthcare Resource Utilization (HCRU) at Baseline, Month 3 and 6	Baseline, Month 3, 6	Rheumatoid Arthritis (RA)-HCRU assessed healthcare usage during last 3 months for direct, indirect medical cost domains. Direct cost: visit to doctor, non-medical practitioner, nursing home, hospital, surgery, emergency room(ER) treatment, diagnostic tests, over-night stay, home healthcare services, aids/devices used. Indirect costs associated with functional disability: employment status, willingness to work, work disability due to RA, sick leave, part time work, ability to perform chores, chores done by family, friends or housekeeper. Assessment was based on 0 to 2-point scale; higher score=higher medical cost.
Work Productivity and Healthcare Resource Utilization (HCRU) at Month 12, 18 and 24	Month 12, 18, 24	Rheumatoid Arthritis (RA)-HCRU assessed healthcare usage during last 3 months for direct, indirect medical cost domains. Direct cost:visit to doctor,non-medical practitioner,nursing home,hospital,surgery,emergency room(ER) treatment,diagnostic tests, over-night stay,home healthcare services, aids/devices used. Indirect costs associated with functional disability:employment status,willingness to work,work disability due to RA,sick leave,part time work,ability to perform chores,chores done by family/friends/housekeeper. Assessment was based on 0 to 2-point scale;higher score=higher medical cost.
Number of Events Including Visits, Surgeries, Tests or Devices as Assessed Using RA-HCRU at Baseline, Month 3 and 6	Baseline, Month 3, 6	RA-HCRU assessed healthcare usage during previous 3 months for direct or indirect medical cost domains. Any RA/non-RA related number of events including visits to doctor, non-medical practitioner, hospital ER treatment, hospitalizations, number of surgeries, diagnostic tests, and devices/aids used were reported.
Number of Events Including Visits, Surgeries, Tests or Devices as Assessed Using RA-HCRU at Month 12, 18 and 24	Month 12, 18, 24	RA-HCRU assessed healthcare usage during previous 3 months for direct or indirect medical cost domains. Any RA/non-RA related number of events including visits to doctor, non-medical practitioner, hospital ER treatment, hospitalizations, number of surgeries, diagnostic tests, and devices/aids used were reported.
Number of Days as Assessed Using RA-HCRU at Baseline, Month 3 and 6	Baseline, Month 1, 3, 6	RA-HCRU assessed healthcare usage during previous 3 months for direct or indirect medical cost domains.Any RA or non-RA related number of days spent in hospital, nursing home, aids/devices used, on sick leave, work per week, performed part time work, performed paid work, chores done by housekeeper and chores done by family/friends.
Work Performance in Past 3 Months on Days Bothered as Assessed Using RA-HCRU at Baseline, Month 3 and 6	Baseline, Month 1, 3, 6	Work performance of participants on number of days bothered was based on a 0 to 10-point scale, where higher score indicated lower work performance.
Work Performance in Past 3 Months on Days Bothered as Assessed Using RA-HCRU at Month 12, 18 and 24	Month 12, 18, 24	Work performance of participants on number of days bothered was based on a 0 to 10-point scale, where higher score indicated lower work performance.