Table 1
| Â | N | Provisional diagnosis N (%) | Reasons for provisional diagnosis N (%) | |||
|---|---|---|---|---|---|---|
| Â | Â | Â | Rheumatoid factor | Psoriasis | Spondylitis features | HLA-B27 |
Systemic arthritis | 1365 | 295 (21.6) | 219 (74.2) | 83 (28.1) | 67 (22.7) | 34 (11.5) |
Oligoarthritis | 4887 | 1127 (23.1) | 837 (74.3) | 353 (31.3) | 314 (27.9) | 144 (12.8) |
Polyarthritis RF-negative | 2991 | 379 (12.7) | 273 (72) | 183 (48.3) | 157 (41.4) | 69 (18.2) |
Polyarthritis RF-positive | 492 | 277 (56.3) | 266 (96) | 33 (11.9) | 28 (10.1) | 10 (3.6) |
Psoriatic arthritis | 433 | 101 (23.3) | 63 (62.4) | 22 (21.8) | 23 (22.8) | 7 (6.9) |
Enthesitis related arthritis | 1323 | 217 (16.4) | 118 (54.4) | 90 (41.5) | - | - |
Total | 12141 | 2396 (19.7) | 1776 (74.1) | 764 (31.9) | 589 (24.6) | 264 (11) |