The prevalence ratios (PRs) (95% CIs) for knee and hip injury, knee and hip osteoarthrosis (OA), and knee and hip surgery among PE teachers compared with the referents
| Variable | Men | Women | |||||
|---|---|---|---|---|---|---|---|
| PR | 95% CI | PR | 95% CI | ||||
| Knee injury | 2.1 | 1.6 to 2.8 | 2.2 | 1.6 to 3.0 | |||
| Knee OA | 2.8 | 1.6 to 4.8 | 3.2 | 1.8 to 5.5 | |||
| Knee OA adjusted for age | 2.7 | 1.6 to 4.6 | 4.0 | 2.0 to 8.2 | |||
| Knee OA adjusted for BMI | 2.8 | 1.6 to 5.0 | 4.5 | 2.3 to 8.9 | |||
| Knee OA adjusted for smoking | 2.4 | 1.3 to 4.4 | 3.1 | 1.8 to 5.4 | |||
| Knee OA adjusted for sports | 2.6 | 1.4 to 5.0 | 3.3 | 1.6 to 6.1 | |||
| Knee OA subjects with major previous knee injury excluded | 2.1 | 0.5 to 8.5 | 2.0 | 0.6 to 6.7 | |||
| Knee surgery | 3.4 | 2.3 to 5.2 | 2.2 | 1.2 to 3.9 | |||
| Hip injury | 1.3 | 0.7 to 2.5 | 1.3 | 0.7 to 2.5 | |||
| Hip OA | 0.9 | 0.5 to 2.0 | 2.7 | 1.0 to 7.1 | |||
| Hip OA adjusted for age | 1.1 | 0.5 to 2.4 | 3.0 | 1.1 to 8.1 | |||
| Hip OA adjusted for BMI | 1.0 | 0.5 to 2.2 | 3.2 | 1.1 to 9.0 | |||
| Hip OA adjusted for smoking | 1.0 | 0.4 to 2.4 | 2.8 | 1.0 to 8.1 | |||
| Hip OA adjusted for sports | 1.1 | 0.4 to 3.0 | 5.5 | 1.2 to 25.2 | |||
| Hip surgery | 0.6 | 0.2 to 1.8 | 1.4 | 0.4 to 5.2 | |||