Table 5.
Sensitivities, specificities, positive predictive values (PPVs) and negative predictive value (NPVs) of the final risk score system for each prediction score cut-off
| Development cohort | Validation cohort | |||||||
|---|---|---|---|---|---|---|---|---|
| Prediction score | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
| ⩾0 | 100.0 | 5.2 | 44.2 | 100.0 | 100.0 | 3.5 | 37.1 | 100.0 |
| ⩾1 | 98.9 | 20.7 | 48.3 | 96.0 | 98.0 | 16.3 | 40.0 | 93.3 |
| ⩾2 | 97.7 | 47.4 | 58.2 | 96.5 | 93.9 | 37.2 | 46.0 | 91.4 |
| ⩾3 | 85.1 | 75.0 | 71.8 | 87.0 | 79.6 | 70.9 | 60.9 | 85.9 |
| ⩾4 | 64.4 | 88.8 | 81.2 | 76.9 | 69.4 | 91.9 | 82.9 | 84.0 |
| ⩾5 | 46.0 | 93.1 | 83.3 | 69.7 | 44.9 | 96.5 | 88.0 | 75.5 |
| ⩾6 | 27.6 | 98.3 | 92.3 | 64.4 | 28.6 | 97.7 | 87.5 | 70.6 |
| ⩾7 | 14.9 | 100.0 | 100.0 | 61.1 | 12.2 | 4.4 | 100.0 | 66.7 |