Study Evaluating Efficacy / Safety of Etanercept + Methotrexate Compared to Usual Treatment in Moderate RA Subjects

Erosion score (a component of the modified TSS) is a measure of change in joint health. Erosion score range is from 0 (no erosion) to 280 (high erosion). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Joint space narrowing score (a component of the modified TSS) is a measure of change in joint health. Joint space narrowing score range is 0 (no narrowing) to 168 (high narrowing). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Radiographic non-progression determined based on TSS change <0.5 using the dichotomous response Yes / No. The modified TSS range is from 0 (no damage) to 448 (bad joint status). Increase from baseline represents disease progression and / or joint worsening; no change represents halting of disease progression; a decrease represents improvement.

Disease activity score based on 28 painful joint counts, 28 swollen joint counts, erythrocyte sedimentation rate (ESR) in millimeters per hour (mm/hr), and general health (GH) using Visual Analog Scale (VAS); range 0 (very well) to 100 (extremely bad). DAS28 score calculated as 0.56 square root (√) (28 painful joint count) + 0.28 √ (28 swollen joint count) + 0.70 (ln ESR mm/hr) + 0.014 GH; range 0 to 10. DAS28 score >5.1=higher disease activity; <3.2=low disease activity; <2.6=clinical remission. Achievement of >1.2 improvement defined as decrease in DAS28 >1.2 (change in DAS28 < -1.2).

Disease activity score based on 28 painful joint counts, 28 swollen joint counts, erythrocyte sedimentation rate (ESR) mm/hr, and general health (GH) using a visual analog scale (VAS); VAS range: 0 (very well) to 100 (extremely bad). DAS28 score calculated as 0.56 √ (28 painful joint count) + 0.28 √ (28 swollen joint count) + 0.70 (ln ESR mm/hr) + 0.014 GH; range 0 to 10. DAS28 score >5.10=higher disease activity; <3.20=low disease activity; <2.60=clinical remission.

Disease activity score based on 28 painful joint counts, 28 swollen joint counts, erythrocyte sedimentation rate (ESR) mm/hr, and general health (GH) using a visual analog scale (VAS); VAS range: 0 (very well) to 100 (extremely bad). DAS28 score calculated as 0.56 √ (28 painful joint count) + 0.28 √ (28 swollen joint count) + 0.70 (ln ESR mm/hr) + 0.014 GH; range 0 to 10. DAS28 score >5.10=higher disease activity; <3.20=low disease activity; <2.60=clinical remission.

Disease activity score based on 28 painful joint counts, 28 swollen joint counts, erythrocyte sedimentation rate (ESR) mm/hr, and participant's assessment of general health (GH) using a visual analog scale (VAS); VAS range: 0 (very well) to 100 (extremely bad). DAS28 score calculated as 0.56 √ (28 painful joint count) + 0.28 √ (28 swollen joint count) + 0.70 (ln ESR mm/hr) + 0.014 GH; range 0 to 10. DAS28 score >5.10=higher disease activity; <3.20=low disease activity; <2.60=clinical remission. DAS28 response of >0.6 defined as decrease in DAS28 >0.6 (change in DAS28 < -0.6).

Response to treatment assessed by EULAR response criteria. Participants were characterized as good, moderate, or non-responders based on both Disease Activity Score (DAS) level attained and change in DAS. Good response defined as >1.2 improvement in DAS from Baseline and DAS attained during follow-up of ≤2.4. Non-responders = participants with improvement of ≤0.6 or participants with improvement of >0.6 but ≤1.2 and DAS attained during follow-up of >5.1. Remaining participants were classified as moderate. Scores of good and moderate were considered to have therapeutic response.

American College of Rheumatology 20% (ACR20) response: responder = ≥ 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: patient assessment of pain; patient global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of the Health Assessment Questionnaire [HAQ]); and erythrocyte sedimentation rate (ESR). Subjects withdrawing early were non-responders.

American College of Rheumatology 50% (ACR50) response: responder = ≥ 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: patient assessment of pain; patient global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of the Health Assessment Questionnaire [HAQ]); and erythrocyte sedimentation rate (ESR). Subjects withdrawing early were non-responders.

American College of Rheumatology 70% (ACR70) response: responder = ≥ 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: patient assessment of pain; patient global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of the Health Assessment Questionnaire [HAQ]); and erythrocyte sedimentation rate (ESR) . Subjects withdrawing early were non-responders.

American College of Rheumatology 90% (ACR 90) response: responder = ≥ 90% improvement in tender joint count; ≥ 90% improvement in swollen joint count; and ≥ 90% improvement in at least 3 of 5 remaining ACR core measures: patient assessment of pain; patient global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of the Health Assessment Questionnaire [HAQ]); and erythrocyte sedimentation rate (ESR). Subjects withdrawing early were non-responders.

Mean daily dose of corticosteroids to manage flare-ups (temporary increases in corticosteroid dose or use of intra-articular steroids) during treatment period. Daily dose of equivalent prednisone derived in mg/day: oral corticosteroids: 5 mg of prednisone = 5 mg of prednisolone = 25 mg of cortisone = 20 mg of hydrocortisone = 4 mg of methylprednisolone = 4 mg of triamcinolone = 2mg of paramethasone = 0.75 mg of betamethasone = 0.75 of dexamethasone = 0.3 of cortivazol.

Participants were asked how their pain had been during the last 48 hours compared to baseline. Participants that reported improvement assessed how important this improvement was to them; range: very important, moderately important, slightly important, or not at all important. Binary response options: 1=improved very important, or improved moderately important; 2=slightly important, not at all important, no change, or worse-more pain.

Percentage of participants reporting acceptable symptom state: acceptance to remain for the rest of their lives with the level of pain they had during the last 48 hours; and unacceptable symptom state: not able to remain for the rest of their lives with the level of pain they had during the last 48 hours.

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 the Health State Profile Score as a single index value; range: 0.0 (death) to 1.0 (perfect health); higher scores indicate a better health state.

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.