Table 4

 Ordered logit regression models for odds ratios to Health Assessment Questionnaire in patients with rheumatoid arthritis

VariableUnivariateMultivariate*
MaleFemaleMaleFemale
OR (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)
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.
Age1.12 (1.04 to 1.20)1.07 (1.03 to 1.11)
Disease duration1.01 (0.96 to 1.07)1.03 (1.00 to 1.06)
DAS28 ⩾2.62.57 (0.74 to 8.97)4.44 (1.91 to 10.37)5.65 (1.85 to 17.28)
Erosiveness0.85 (0.26 to 2.85)2.63 (0.90 to 7.72)
Pain per 10 mm1.39 (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 N0.57 (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 N0.45 (0.29 to 0.69)0.45 (0.31 to 0.66)
    Trunk flexion per 100 N0.41 (0.19 to 0.89)0.46 (0.29 to 0.74)
    Grip strength per 20 N0.90 (0.80 to 0.99)0.76 (0.68 to 0.85)0.81 (0.71 to 0.93)