| Cut-off values* | Sensitivity | Specificity | Youden index |
| −1.00 | 1.000 | .000 | .000 |
| .50 | 1.000 | .097 | .097 |
| 1.50 | 1.000 | .258 | .258 |
| 2.50 | 1.000 | .71 | .710 |
| 3.50 | .967 | .968 | .935 |
| 4.50 | .900 | .968 | .868 |
| 5.50 | .767 | .968 | .735 |
| 6.50 | .467 | 1.000 | .467 |
| 8.00 | .000 | 1.000 | .000 |