In the group with no radiographic changes at baseline, less endurance in one-leg rise from sitting predicted incident osteoarthritis (OA) 5 years later. Variables dichotomised by the median value. Univariate odds ratio (OR) with 95% confidence intervals (CI)
| Predictor variable (values from baseline)* | n† | Incident OA at follow up (n = 41) | No OA at follow up (n = 53) | OR (95% CI) |
|---|---|---|---|---|
| *Variable expressed as median (range), except for sex where numbers are presented; †numbers of patients included in analysis; ‡lower value indicates better result; §higher value indicates better result. | ||||
| Age (years) | 94 | 48 (35–54) | 44 (35–54) | 1.58 (0.69 to 3.60) |
| Sex (women/men) | 39/55 | 18/23 | 21/32 | 0.84 (0.37 to 1.92) |
| Body mass index (kg/m2) | 94 | 25.2 (19.3–37) | 25.4 (18.3–34) | 0.96 (0.42 to 2.20) |
| Pain VAS (0–100)‡ | 74 | 3 (0–51) | 0 (0–84) | 1.33 (0.52 to 3.44) |
| Maximum number of one-leg rises§ | 90 | 17 (0–99) | 25 (1–229) | 2.55 (1.08 to 6.02) |
| Time spent walking 300 m (min)‡ | 92 | 2.58 (1.94–3.67) | 2.52 (1.93–4.08) | 1.67 (0.72 to 3.86) |
| Timed standing on one leg (s)§ | 92 | 15.75 (2–31) | 18 (2–31) | 0.98 (0.43 to 2.25) |