Table 3 The AUC and the optimal cut-off value based on the highest Youden’s index
Items | AUC | Highest Youden’s index | Optimal cut-off value | Sensitivity | Specificity |
|---|---|---|---|---|---|
Angle E | 0.929 | 0.795 | 19.9 | 0.885 | 0.910 |
X2 | 0.819 | 0.538 | 30.1 | 0.769 | 0.769 |
MRI 7 | 0.805 | 0.564 | 16.3 | 0.692 | 0.872 |
X9 | 0.636 | 0.295 | 7.3 | 0.731 | 0.564 |