Associations between progression of hip osteoarthritis and body mass index (n = 1676)
| BMI (kg/m2) | ⩾1 mm | ⩾1.5 mm | Increase in K&L | |||
|---|---|---|---|---|---|---|
| Progression (%) | OR (95% CI) | Progression (%) | OR (95% CI) | Progression (%) | OR (95% CI) | |
| BMI, body mass index; K&L, Kellgren and Lawrence. | ||||||
| ORs were adjusted for age, sex and follow-up time. | ||||||
| Progression is defined by two definitions—namely a joint space narrowing of ⩾1, and 1.5 mm at follow-up, and by an increase of minimally 1 grade in K&L index. | ||||||
| ⩽25 | 9.1 | 1 | 2.0 | 1 | 8.9 | 1 |
| >25–27.5 | 8.0 | 0.9 (0.6 to 1.3) | 2.6 | 1.5 (0.6 to 3.8) | 9.5 | 1.1 (0.8 to 1.6) |
| >27.5 | 9.1 | 0.9 (0.6 to 1.3) | 3.2 | 1.5 (0.6 to 3.7) | 12.3 | 1.3 (0.9 to 1.8) |