Ordered regression analysis for disability in patients with RA. (The ICF components were scored 0 = 0, 0.1–1 = 1, 1.1–2 = 2, and 2.1–3 = 3).
| Characteristic | Body Structure and Functioning, OR (95% CI) | Activity, OR (95% CI) | Participation, OR (95% CI) |
|---|---|---|---|
| Male sex | 0.70 (0.53 to 0.93) | 1.22 (0.88 to 1.70) | 0.91 (0.70 to 1.19) |
| Age | 0.98 (0.97 to 1.00) | 1.01 (0.99 to 1.03) | 1.02 (1.00 to 1.04) |
| Duration of disease | 1.00 (0.99 to 1.01) | 1.02 (1.01 to 1.04) | 1.01 (1.00 to 1.03) |
| Disease activity (RADAI) | 1.17 (1.14 to 1.19) | 1.15 (1.12 to 1.17) | 1.09 (1.07 to 1.11) |
| Education, yrs | 1.06 (1.02 to 1.10) | 0.97 (0.93 to 1.02) | 1.02 (0.98 to 1.06) |
| Exercise | |||
| ≥ 3 times a week | 1 (indicator) | 1 (indicator) | 1 (indicator) |
| ≥ 1 times a week | 1.01 (0.74 to 1.37) | 1.59 (1.13 to 2.22) | 1.64 (1.24 to 2.17) |
| 0 no exercise | 1.43 (1.01 to 2.03) | 2.87 (1.96 to 4.19) | 4.69 (3.33 to 6.59) |
| Subjective health | |||
| Poor | 1 (indicator) | 1 (indicator) | 1 (indicator) |
| Fairly good | 0.26 (0.15 to 0.45) | 0.28 (0.17 to 0.47) | 0.38 (0.24 to 0.59) |
| Excellent or good | 0.05 (0.03 to 0.10) | 0.08 (0.05 to 0.15) | 0.11 (0.06 to 0.18) |
| No. of comorbidities | 1.10 (1.03 to 1.18) | 1.19 (1.09 to 1.30) | 1.20 (1.12 to 1.30) |
RADAI: Rheumatoid Arthritis Disease Activity Index.