Patient characteristics
| Characteristics | |
|---|---|
| RF, rheumatoid factor; CRP, C reactive protein. | |
| No of patients | 80 |
| Age (years), mean (range) | 37.4 (20–81) |
| Women, No (%) | 39 (49) |
| Disease duration (weeks), mean (range) | 18 (2–52) |
| Monarthritis, No (%) | 26 (33) |
| Number of swollen joints, mean (range) | 2 (1–5) |
| CRP >100 g/l, No (%) | 54 (68) |
| RF >40 IU/l, No (%) | 12 (15) |
| DR4 and/or DR1, No (% of tested) | 47/71 (66) |
| HLA-B27, No (% of tested) | 18/76 (24) |