Independent variable | OR (95% CI) (N = 424a) | p value |
---|
HLA-B27+ |
6.7 (3.2–14.0)
|
< 0.001
|
IBP |
4.0 (1.7—8.9)
|
0.001
|
Uveitis |
3.1 (1.0–9.2)
|
0.04
|
Psoriasis |
4.6 (1.8–12.0)
|
0.002
|
Heel enthesitis |
4.3 (1.9–9.7)
|
< 0.001
|
Dactylitis |
5.2 (1.0–26.9)
|
0.05
|
IBD |
4.7 (1.5–14.8)
|
0.009
|
Peripheral arthritis | 1.4 (0.5–3.7) | 0.5 |
Response to NSAIDs |
3.1 (1.6–6.0)
|
0.001
|
Family history of SpA | 0.9 (0.4–1.8) | 0.8 |
Elevated CRP/ESR | 1.7 (0.8–3.5) | 0.2 |
MRI-SIJ+ |
32.6 (14.2–75.0)
|
< 0.001
|
X-SIJ+ |
6.9 (1.4–32.7)
|
0.02
|
- Bold data indicate significant results
- axSpA axial spondyloarthritis, SpA spondyloarthritis, CBP chronic back pain, OR odds ratio, CI confidence interval, HLA human leukocyte antigen, IBP inflammatory back pain, IBD inflammatory bowel disease, NSAID non-steroidal anti-inflammatory drug, CRP C-reactive protein, ESR erythrocyte sedimentation rate, MRI-SIJ magnetic resonance imaging of sacroiliac joints, X-SIJ plain radiograph of of sacroiliac joints
- aNumber of patients with complete data on all variables