Association between the five different descriptions and knee complaints for the three cut-off points
| Cut-off | Original description (2678 persons) OR* (95% CI) | Alternative 1 (654 persons) OR (95% CI) | Alternative 2 (523 persons) OR (95% CI) | Alternative 3 (584 persons) OR (95% CI) | Alternative 4 (577 persons) OR (95% CI) |
|---|---|---|---|---|---|
| Knee complaints (yes) | |||||
| K&L≥1 | 2.2 (1.9 to 2.7) | 2.0 (1.4 to 2.9) | 2.1 (1.4 to 3.1) | 2.8 (1.9 to 4.1) | 1.5 (0.98 to 2.2) ns |
| K&L≥2 | 4.3 (3.2 to 5.7) | 2.9 (1.8 to 4.8) | 3.0 (1.6 to 5.5) | 4.5 (2.4 to 8.5) | 2.9 (1.5 to 5.6) |
| K&L≥3 | 18.3 (7.1 to 47.2) | 10.0 (3.7 to 27.2) | 9.3 (3.3 to 26.1) | 14.2 (3.9 to 50.8) | 6.5 (1.6 to 27.0) |
↵* Adjusted for the other risk factors: gender, age and body mass index.
K&L, Kellgren and Lawrence; ns, not significant.