Table 1.
Summary statistics for the demographic variables.
| Variable | Male (n = 1674) | Female (n = 2526) |
|---|---|---|
| Age (years) | 64.00 (18; 89) | 68.00 (18; 95) |
| BMI (kg/m2) | 28.74 (± 5.09) | 29.92 (± 3.14) |
| Stature (cm) | 177.14 (± 7.40) | 163.41 (± 6.50) |
| Left leg (n) | 680 | 1093 |
| Right leg (n) | 716 | 1223 |
| Bilateral (n) | 278 | 210 |
| Femur length (SD) | 47.07 (± 4.31) | 43.06 (± 4.31) |
| Tibia length (SD) | 37.78 (± 3.63) | 35.02 (± 2.78) |
| Leg length (SD) | 84.66 (± 7.75) | 78.59 (± 5.89) |
Indicated are the median for age (minimum; maximum) and the mean ± standard deviation (SD) for body mass index (BMI) and stature, separately for males and females. Indicated are also the numbers of left, right and bilateral radiographs used in this study. The data set consisted of 1674 male and 2526 female radiographs in total.