Table 4 Ordered logit regression models for odds ratios to Health Assessment Questionnaire in patients with rheumatoid arthritis.
| Variable | Univariate | Multivariate* | ||
|---|---|---|---|---|
| Male | Female | Male | Female | |
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Age | 1.12 (1.04 to 1.20) | 1.07 (1.03 to 1.11) | ||
| Disease duration | 1.01 (0.96 to 1.07) | 1.03 (1.00 to 1.06) | ||
| DAS28 ⩾2.6 | 2.57 (0.74 to 8.97) | 4.44 (1.91 to 10.37) | 5.65 (1.85 to 17.28) | |
| Erosiveness | 0.85 (0.26 to 2.85) | 2.63 (0.90 to 7.72) | ||
| Pain per 10 mm | 1.39 (1.14 to 1.68) | 1.25 (1.09 to 1.44) | 1.37 (1.11 to 1.69) | |
| Strength indices | ||||
| Knee extension per 50 N | 0.57 (0.40 to 0.82) | 0.38 (0.29 to 0.52) | 0.57 (0.40 to 0.82) | 0.46 (0.30 to 0.71) |
| Trunk extension per 100 N | 0.45 (0.29 to 0.69) | 0.45 (0.31 to 0.66) | ||
| Trunk flexion per 100 N | 0.41 (0.19 to 0.89) | 0.46 (0.29 to 0.74) | ||
| Grip strength per 20 N | 0.90 (0.80 to 0.99) | 0.76 (0.68 to 0.85) | 0.81 (0.71 to 0.93) | |
Total HAQ was scored 0 = 0, 0.1–1 = 1, 1.1–2 = 2, and 2.1–3 = 3.
*Forward stepwise estimation. Only the variables entered into the model are shown.
CI, confidence interval; DAS28, 28 joint disease activity score; OR, odds ratio.