TABLE 1.
Demographic variables for the study sample, the healthy group without risk factors (Healthy Control), the group with risk factors for knee osteoarthritis (pre-rOA), groups with different grades of radiographic osteoarthritis (rOA: KLG2 through KLG4), and independently groups with different configurations of joint space narrowing (without, medial, lateral, and bilateral).
| Females | Males | Age | Height[cm] | Weight[kg] | BMI | |
|---|---|---|---|---|---|---|
| Total | 539 | 360 | 61.6±9.5 | 167.7±9.0 | 81.5±16.1 | 28.9±4.8 |
| Healthy Control | 61 | 40 | 55.0±7.6 | 167.8±8.7 | 69.0±11.9 | 24.4±3.0 |
| Pre-rOA | 137 | 117 | 60.7±9.5 | 168.0±9.3 | 80.7±15.7 | 28.4±4.3 |
| rOA | 341 | 203 | 63.2±9.2 | 167.5±8.9 | 84.3±15.9 | 30.0±4.8 |
| KLG2 | 220 | 96 | 62.4±9.1 | 166.7±8.5 | 83.5±16.0 | 30.1±4.8 |
| KLG3 | 94 | 73 | 64.9±9.1 | 168.0±9.3 | 85.3±15.8 | 30.1±4.7 |
| KLG4 | 27 | 34 | 62.7±9.5 | 171.0±9.0 | 85.4±16.1 | 29.0±4.6 |
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| M0 / L0 | 198 | 158 | 59.1±9.2 | 167.3±8.9 | 77.5±15.5 | 27.6±4.6 |
| M0 / L1–3 | 68 | 36 | 63.8±9.5 | 168.2±9.8 | 82.6±16.9 | 29.1±4.8 |
| M1–3 / L0 | 225 | 156 | 63.5±9.2 | 168.0±8.9 | 85.2±15.5 | 30.2±4.8 |
| M1–3 / L1–3 | 3 | 10 | 62.4±10.8 | 169.6±9.8 | 88.9±18.8 | 30.0±3.9 |
Pre-rOA = Kellgren & Lawrence grades 1 and 2, rOA = Kellgren & Lawrence Grades 2 to 4, M0 = no medial joint space narrowing, M1–3 = medial joint space narrowing grade 1–3, L0 = no lateral joint space narrowing, L1–3 = lateral joint space narrowing grade 1–3