Table 2.
Odds ratios of each variable after adjusting for age and body mass index.
| P value | OR | 95% CI of OR | ||
|---|---|---|---|---|
| Lower | Upper | |||
| Lateral (coronal) femoral bow | <0.0001 | 1.546 | 1.234 | 1.935 |
| Anterior (sagittal) femoral bow | 0.005 | 1.220 | 1.064 | 1.400 |
| Total cortical thickness | 0.002 | 1.411 | 1.131 | 1.759 |
| Lateral cortical thickness | <0.0001 | 3.234 | 1.779 | 5.878 |
| Medical cortical thickness | 0.521 | 1.090 | 0.837 | 1.421 |
| Lateral cortical thickness index∗ | <0.0001 | 1.526 × 1014 | 3.005 × 106 | 7.746 × 1021 |
| Medical cortical thickness index | 0.769 | 0.238 | 0.000 | 3376.113 |
| Adjusted lateral cortical thickness† | <0.0001 | 4.187 | 2.018 | 8.688 |
| Adjusted medial cortical thickness† | 0.478 | 1.114 | 0.826 | 1.5032 |
∗High OR for lateral cortical thickness index was caused by statistically significant difference of index between AFSF group and control group. Instead, we analyzed the OR between two groups by using adjusted cortical thickness†.
†Adjusted lateral and medial cortical thicknesses were calculated as the lateral and medial cortical thickness index multiplied by the mean femoral diameter of the AFSF group and the control group, respectively.
CI: confidence interval. OR: odds ratio.