Table I.
Clinical characteristics. Where AA = anatomic axis, BMI = body mass index, IQR = interquartile range, KJC = knee joint centre, K&L = Kellgren & Lawrence grade, n = number, RKOA = radiographic knee osteoarthritis, SD = standard deviation, SRKOA = symptomatic radiographic knee osteoarthritis, 1P = one-point, 2P = two-point
| Characteristic | Included Y10 cohort (n = 1058 knees) | Excluded Y10 cohort (n = 566 knees) | P value∗ |
|---|---|---|---|
| Age, median (IQR) years | 62 (57–67) | 63 (57–69) | 0.004 |
| BMI, median (IQR) kg/m2 | 26.2 (23.6–29.3) | 26.3 (23.4–29.7) | 0.69 |
| Knee injury, % | 16.5 | 15.9 | 0.78 |
| Knee pain ≥15 days, % | 13.4 | 15.4 | 0.28 |
| RKOA ≥2 K&L grade, % (n) | 27.9 | 27.9 (n = 544) | 0.98 |
| SRKOA, % (n) | 6.1 | 8.3 (n = 544) | 0.09 |
| Mean AA angle° (±SD) (n) | |||
| 1P KJC1 | 180.23 (3.70) | ||
| 1P KJC2 | 182.72 (3.40) | ||
| 1P KJC3 | 180.11 (2.93) | ||
| 2P KJC1 | 182.47 (2.78) | ||
| 2P KJC2 | 183.64 (2.66) | ||
| 2P KJC3 | 182.53 (2.51) | ||
Statistically significant P value is represented in bold.
∗
P values compare age and BMI using Kruskal Wallis test; knee injury, knee pain, RKOA and SRKOA using chi-square test.