Baseline variables significantly associated with severe physical disability (health assessment questionnaire score ⩾2.0) in the logistic regression model
| Explanatory variable | β | SE (β) | p Value | OR | OR 95% CI |
|---|---|---|---|---|---|
| β, estimated coefficient; SE (β), estimated standard error of the β. | |||||
| CI, confidence interval; OR, odds ratio. | |||||
| Age (per year) | 0.025 | 0.010 | 0.02 | 1.004 | 1.01 to 1.05 |
| Male sex | −0.780 | 0.292 | <0.01 | 0.46 | 0.26 to 0.81 |
| Radiological joint damage (radiographic score >50) | 0.598 | 0.233 | 0.01 | 1.82 | 1.15 to 2.87 |
| Disease activity score (per unit) | 0.694 | 0.139 | <0.01 | 2.00 | 1.53 to 2.63 |
| Morning stiffness (per minute) | 0.065 | 0.029 | 0.02 | 1.07 | 1.01 to 1.13 |
| Fatigue (per unit) | 0.170 | 0.062 | <0.01 | 1.19 | 1.05 to 1.34 |