Association of demographic, clinical, and disease characteristics with physical functioning (Bath AS Functional Index).
| Beta | 95% CI | |
|---|---|---|
| Intercept | −1.52 | −2.1 to −0.9 |
| Age | 0.04 | 0.02–0.05 |
| Female sex | 0.13 | −0.17–0.40 |
| Symptom duration | −0.003 | −0.02–0.11 |
| BASDAI | 0.86 | 0.92–0.19 |
| Radiographic spinal change | ||
| Ankylosis | 1.13 | 0.74–1.52 |
| Syndesmophytes | 0.42 | 0.11–0.74 |
| No abnormalities | Reference | |
| Hip involvement | 0.64 | 0.35–0.92 |