Table 3. Diagnostic Performance at Various Point Score Thresholds.
| Risk threshold | Diagnostic performancea |
|---|---|
| ≥5 Points | |
| Sensitivity | 134/157 (85.4) |
| Specificity | 148/192 (77.1) |
| PPV | 134/178 (75.3) |
| NPV | 148/171 (86.5) |
| F score | 80.0 |
| Youden index | 0.625 |
| ≥6 Points | |
| Sensitivity | 128/157 (81.5) |
| Specificity | 165/192 (85.9) |
| PPV | 128/155 (82.6) |
| NPV | 165/194 (85.1) |
| F score | 82.0 |
| Youden index | 0.674 |
| ≥7 Points | |
| Sensitivity | 112/157 (71.3) |
| Specificity | 181/192 (94.3) |
| PPV | 112/123 (91.1) |
| NPV | 181/226 (80.1) |
| F score | 80.0 |
| Youden index | 0.656 |
| ≥8 Points | |
| Sensitivity | 89/157 (56.7) |
| Specificity | 185/192 (96.4) |
| PPV | 89/96 (92.7) |
| NPV | 185/253 (73.1) |
| F score | 70.4 |
| Youden index | 0.531 |
Abbreviations: NPV, negative predictive value; PPV, positive predictive value.
a
Unless otherwise indicated, data are expressed as No./total No. (%) of patients.