Medial meniscus tears (grade 3 MRI SI) among 92 floor layers compared to 49 graphic designers stratified into age groups.
| Age, yrs | Floor Layers | Graphic Designers | OR* (95% CI) | ||
|---|---|---|---|---|---|
| Total Meniscal Tear | Total Meniscal Tear | ||||
| N | n (%) | N | n (%) | ||
| ≤ 49 | 24 | 16 (66.7) | 4 | 2 (50.0) | 2.0 (0.1–34.3) |
| 50–59 | 45 | 29 (64.4) | 28 | 13 (46.4) | 2.7 (0.9–8.2) |
| ≥ 60 | 23 | 17 (73.9) | 17 | 11 (64.7) | 2.5 (0.4–17.0) |
↵* Adjusted for body mass index, trade seniority, and knee-straining sports.