Table 1.
Subject characteristics
| Subjects | Number | Sex | Age (years) | BMI | K-L score | ||||
| Female(%) | Male | Mean | SD(±) | Mean | SD(±) | =2 | ≥ 3(%) | ||
| OA cases | 183 | 124(67.8) | 59 | 58.6 | 13.5 | 25.4 | 3.5 | 75 | 108(59) |
| Controls | 210 | 142(67.6) | 68 | 57.7 | 11.7 | 23.2 | 3.9 | ||
BMI: body mass index.
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