Clinical, biological, and radiological characteristics of 18 patients with ankylosing spondylitis
| mean | SEM | median | range | |
|---|---|---|---|---|
| age (y) | 34.9 | 30 | 23–56 | |
| sex | 5 women 13 men | — | — | — |
| disease duration (y) | 6.4 | 4.5 | 0.5–22 | |
| Schober’s test (cm) | 3.4 | 0.25 | 3 | 1.5–5 |
| sacroiliitis (n) (%) | 14 (78) | — | — | — |
| ESR mm 1st h | 19.9 | 4.54 | 18 | 2–74 |
| CRP (mg/l) | 12.6 | 5.02 | 3.1 | 2–67 |
| HLA B27 (%) | 15 (83.3) | — | — | — |
| BASDAI score | 4.77 | 0.56 | 5.1 | 0.75–8.3 |
| axial/peripheral disease | 11/7 | — | — | — |
ESR = erythrocyte sedimentation rate; CRP = plasma C reactive protein concentration; BASDAI = Bath Ankylosing Spondylitis Disease Activity.