Stepwise multivariate analysis (the item “diagnosis of ankylosing spondylitis before inclusion in the study” not included in the analysis, because of its relationship with radiological sacroiliitis): significant results.
| ACW Pain, n = 316 | No ACW Pain, n = 392 | Adjusted OR (95% CI) | p | |
|---|---|---|---|---|
| Global enthesitis score (0–13) | 3.65 ± 3.57 | 1.91 ± 2.53 | 1.206 (1.142–1.274) | < 0.0001 |
| For an increase of 1 unit | ||||
| Involvement of thoracic spine (pain), yes vs no (%) | 212 (67) | 192 (49) | 2.204 (1.590–3.054) | < 0.0001 |
| Radiographic sacroiliac score (%) | ||||
| 0: normal | 142 (46) | 209 (55) | ||
| 1: doubtful | 81 (26) | 75 (20) | 1.7474 (1.168–2.611) | 0.0066 |
| 2: established or fusion | 88 (27.9) | 99 (25.78) | 1.648 (0.122–2.420) | 0.0108 |
ACW: anterior chest wall.