Reference group (n = 744) | Knee pain without knee OA (n = 169) | Knee pain with knee OA (n = 402) | Radiographic knee OA without pain (n = 186) | |
---|---|---|---|---|
Women, % | 63.0 | 70.4 | 63.7 | 61.3 |
Age, years (SD) | 68.7 (7.2) | 68.4 (7.3) | 70.1 (7.2) | 71.5 (6.7) |
BMI (SD) | 26.7 (4.3) | 27.8 (4.8) | 28.9 (5.5) | 28.8 (5.1) |
Comorbidity, % | ||||
Single | 32.5 | 26.6 | 23.1 | 28.0 |
Multiple | 46.1 | 59.2 | 64.9 | 53.2 |
Years of education, % | ||||
≤ 9 years | 35.0 | 30.3 | 43.3 | 34.4 |
> 9 years & ≤ 12 years | 38.3 | 43.2 | 34.7 | 44.8 |
>12 years | 26.7 | 26.5 | 22.0 | 20.8 |
Smoking, % | ||||
Current smoker | 14.1 | 12.7 | 12.3 | 11.8 |
Ex-smoker | 45.1 | 46.4 | 46.0 | 42.5 |
Employment, % | ||||
Employed | 25.3 | 23.7 | 14.7 | 15.6 |
Retired | 72.2 | 72.8 | 80.9 | 81.7 |