OR for DAS28 remission according to sex and smoking status, adjusted by the confounders. OR were described by using the references of male never smokers and female never smokers, which were calculated from the same logistic regression model.
| OR (95% CI) | p | |
|---|---|---|
| Reference: Male Never | ||
| Male past | 0.66 (0.44–0.98) | 0.04 |
| Male current | 0.61 (0.39–0.96) | 0.03 |
| Female never | 0.47 (0.33–0.67) | < 0.01 |
| Female past | 0.49 (0.33–0.72) | < 0.01 |
| Female current | 0.56 (0.36–0.86) | < 0.01 |
| Reference: Female Never | ||
| Male never | 2.13 (1.48–3.07) | < 0.01 |
| Male past | 1.40 (1.12–1.75) | < 0.01 |
| Male current | 1.30 (0.96–1.76) | 0.09 |
| Female past | 1.04 (0.86–1.25) | 0.68 |
| Female current | 1.19 (0.91–1.54) | 0.19 |
The confounders adjusted for in the analysis included the Japanese Health Assessment Questionnaire scores, rheumatoid factor positivity, body mass index, and biologics use.