Table 1. Baseline characteristics of early arthritis patients presenting with rheumatoid arthritis, psoriatic arthritis, peripheral spondyloarthritis, reactive arthritis and self-limiting UA.
n, number of patients; SD, standard deviation; IQR, inter quartile range; ACPA: anti-citrullinated protein antibodies; SJC, swollen joint count; TJC, tender joint count; ESR, erythrocyte sedimentation rate; VAS, visual analogue scale; HAQ, health assessment questionnaire; UA, undifferentiated arthritis
| Rheumatoid arthritis (n=532) | Psoriatic arthritis (n=88) | Peripheral spondyloarthritis (n=24) | Reactive Arthritis (n=30) | Self-limiting undifferentiated arthritis (n=76) | |
|---|---|---|---|---|---|
| Women, n (%) | 343 (65) | 38 (43) | 11 (46) | 18 (60) | 41 (54) |
| Age in years, mean (SD) | 59 (14) | 49 (15) | 38 (14) | 47 (15) | 50 (15) |
| Symptom duration, weeks median (IQR) | 12 (6-29) | 16 (7-47) | 13 (5-39) | 4 (2-7) | 8 (3-16) |
| ACPA, n (%) | 250 (47) | 2 (2) | 1 (4) | 0 (0) | 0 (0) |
| 66-SJC, median (IQR) | 5 (2-10) | 2 (1-4) | 2 (1-4) | 2 (1-4) | 1 (1-2) |
| 68-TJC, median (IQR) | 5 (3-7) | 3 (1-5) | 2 (1-3) | 2 (1-5) | 1 (1-2) |
| ESR, median (IQR) | 28 (11-41) | 17 (6-33) | 33 (9-58) | 21 (9-33) | 11 (6-22) |
| VAS general health, median (IQR) | 70 (50-80) | 68 (50-80) | 70 (60-80) | 70 (40-80) | 60 (40-70) |
| HAQ, median (IQR) | 0.9 (0.5-1.5) | 0.5 (0.1-0.9) | 0.4 (0.2-0.8) | 0.8 (0.3-1.0) | 0.4 (0.0-0.9) |