| Stage | n | Accuracy (%) | Sensibility (%) | Specificity (%) | PPV (%) | NPV (%) |
| T1 | 5 | 86.7 | 60 | 100 | 100 | 83.S3 |
| T2 | 0 | 0 | 0 | 0 | 0 | 0 |
| T3 | 7 | 80 | 85.7 | 75 | 75 | 85.7 |
| T4 | 3 | 93.3 | 100 | 91.7 | 75 | 100 |