Influence of variables on opinions of rheumatologists for all patients together, stratified for the Bath Ankylosing Spondylitis Disease Activity Index criterion
| Variables | n (available data) | OR (95% CI) | OR in patients with BASDAI score ⩾4 (95% CI) (n) | OR in patients with BASDAI score <4 (95% CI) (n) |
|---|---|---|---|---|
| BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; CRP, C reactive protein; ESR, erythrocyte sedimentation rate; MRI, magnetic resonance imaging. | ||||
| Raised ESR | 880 | 3.3 (2.5 to 4.5) | 2.9 (2.0 to 4.2) (535) | 3.4 (2.1 to 5.6) (345) |
| Raised CRP | 793 | 3.8 (2.8 to 5.1) | 3.9 (2.7 to 5.8) (493) | 2.8 (1.7 to 4.8) (300) |
| Rapid radiographic progression | 476 | 8.6 (5.5 to 13.5) | 7.8 (4.2 to 14.6) (276) | 9.7 (4.7 to 19.7) (200) |
| Activity on MRI | 156 | 2.3 (1.2 to 4.5) | 2.8 (1.0 to 7.7) (96) | 1.5 (0.5 to 4.5) (60) |
| Activity on scintigraphy | 134 | 2.9 (1.4 to 5.9) | 3.1 (1.2 to 7.8) (95) | 2.4 (0.6 to 9.0) (39) |
| Activity on ultrasound | 80 | 2.9 (0.9 to 8.9) | 3.4 (0.7 to 17.7) (52) | 3.1 (0.6 to 16.9) (28) |