Univariable logistic regression | Multivariable logistic regression | |||
OR | 95% CI | OR | 95% CI* | |
Age | 0.98 | 0.97 to 0.98 | 0.99 | 0.98 to 0.99 |
Gender: female | 1.57 | 1.40 to 1.75 | 1.16 | 1.01 to 1.33 |
Educational level: no university | 1.26 | 1.13 to 1.40 | 0.96 | 0.84 to 1.11 |
Employment status: sick leave or unemployed | 2.02 | 1.77 to 2.31 | 1.63 | 1.39 to 1.91 |
Patient organisation membership: no | 1.15 | 1.03 to 1.28 | 0.95 | 0.83 to 1.10 |
Physical activity engagement: no | 1.49 | 1.28 to 1.74 | 1.22 | 1.01 to 1.47 |
Smoking: yes | 1.63 | 1.42 to 1.88 | 1.20 | 1.01 to 1.43 |
Alcohol consumption: yes | 0.79 | 0.70 to 0.89 | 1.03 | 0.89 to 1.20 |
BASDAI (0–10) | 1.52 | 1.48 to 1.57 | 1.42 | 1.36 to 1.48 |
Spinal Stiffness Index (3–12) | 1.15 | 1.12 to 1.18 | 1.03 | 0.99 to 1.07 |
Functional Limitation Index (0–54) | 1.03 | 1.03 to 1.03 | 1.02 | 1.01 to 1.02 |
Symptom duration, years | 0.98 | 0.98 to 0.99 | 0.98 | 0.98 to 0.99 |
Inflammatory bowel disease | 1.32 | 1.12 to 1.56 | 1.01 | 0.83 to 1.23 |
*Bold 95%CI indicate statistical significance
BASDAI, Bath Ankylosing Spondylitis Disease Activity Index.