Baseline variables for the main study (n = 384) and its subgroup (n = 142)
| Main sample | Subsample | |||
|---|---|---|---|---|
| DAS (n = 205) | Usual care (n = 179) | DAS (n = 61) | Usual care (n = 81) | |
| Values are n (%) or median (interquartle range) unless specified. | ||||
| DAS, disease activity score; ESR, erythrocyte sedimentation rate; RF, rheumatoid factor. | ||||
| Female | 138 (67%) | 132 (74%) | 38 (62%) | 62 (77%) |
| Disease duration (years) | 6 (3 to 14) | 7 (3 to 14) | 4 (2 to 10) | 5 (2 to 12) |
| Age (years) | 58 (52 to 65) | 58 (50 to 70) | 57 (51 to 65) | 58 (51 to 68) |
| mean (SD) | 57 (11) | 59 (13) | 57 (10) | 59 (12) |
| RF positive | 172 (84%) | 132 (74%) | 53 (87%) | 55 (68%) |
| Rheumatoid nodules | 43 (21%) | 37 (21%) | 11 (18%) | 13 (16%) |
| Joint damage present | 135 (65%) | 108 (60%) | 37 (61%) | 39 (48%) |
| ESR (mm/h) | 20 (10 to 32) | 19 (10 to 35) | 22 (12 to 35) | 16 (8 to 27) |