Multivariate logistic regressions analyses of factors associated with MRI inflammation
| MRI inflammation (spine or sacroiliac joints) | MRI sacroiliac joint inflammation | MRI spine inflammation | ||||
|---|---|---|---|---|---|---|
| OR (95% CI) | p Value | OR (95% CI) | p Value | OR (95% CI) | p Value | |
| Smoker | 1.91 (1.34 to 2.72) | <0.001 | 1.57 (1.08 to 2.30) | 0.02 | 2.33 (1.55 to 3.51) | <0.001 |
| Caucasian race | NI | – | 0.49 (0.27 to 0.87) | 0.02 | NI | – |
| Male sex | 1.87 (1.31 to 2.64) | <0.001 | 1.80 (1.24 to 2.62) | 0.002 | 1.98 (1.30 to 3.01) | 0.001 |
| HLA-B27 positivity | 2.06 (1.43 to 2.97) | <0.001 | 2.08 (1.40 to 3.10) | <0.001 | NS | – |
| Drinker | NI | – | NS | – | NI | – |
| Family history of SpA | NI | – | NI | – | NS | – |
| Age at onset of IBP | NS | – | 0.97 (0.95 to 0.99) | 0.01 | NI | – |
| CRP | 1.02 (1.01 to 1.03) | 0.01 | NS | – | 1.02 (1.00 to 1.03) | 0.02 |
CRP, C-reactive protein; HLA, human leucocyte antigen; IBP, inflammatory back pain; NI, not included in the multivariate model; NS, non-significant in multivariate analysis; SpA, spondyloarthritis.