Table 1.
Comparison of BMD T-scores between patients with knee osteoarthritis and healthy controls after age, sex, and BMI matching.
| Osteoarthritis n = 239 | Healthy Controls n = 239 | p Value | |
|---|---|---|---|
| Demographics | |||
| Age (year), mean ± SD | 67.1 ± 9.3 | 67.1 ± 9.2 | 0.8244 |
| Sex (female), n (%) | 231 (96.7) | 231 (96.7) | - |
| Height (cm), mean ± SD | 153.1 ± 6.7 | 153.2 ± 6.5 | 0.7682 |
| Weight (kg), mean ± SD | 56.4 ± 9.3 | 56.7 ± 9.2 | 0.3427 |
| BMI (kg/m2), mean ± SD | 24 ± 3.5 | 24 ± 3.4 | 0.9676 |
| BMD T-scores, mean ± SD | |||
| Proximal femur | |||
| Neck | −1.6 ± 1.0 | −1.4 ± 1.1 | 0.036 * |
| Femur total | −1.2 ± 1.1 | −1.2 ± 1.4 | 0.712 |
| Lumbar spine | −1.8 ± 1.3 | −1.8 ± 1.4 | 0.646 |
* p < 0.05. Statistical analysis was performed using paired t-test. BMD, bone mineral density; BMI, body mass index; SD, standard deviation.