Table 5.
AUC, cutoff values, sensitivity, specificity, PPV, and NPV of weighted risk score in predictive diagnosis of testicular torsion
| Predicted probability/risk score cutoff | AUC (95% CI) | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | PPV (95% CI) | NPV (95% CI) | LR+ (95% CI) | LR− (95% CI) |
|---|---|---|---|---|---|---|---|
|
| |||||||
| ≥0.70 | 0.83 (0.71, 0.95) | 78.8 (62.3, 89.3) | 50 (21.5, 78.5) | 86.7 (70.3, 94.7) | 36.4 (15.2, 64.6) | 1.58 (0.95, 2.63) | 0.42 (0.19, 0.91) |
| ≥0.80 | 72.7 (55.8, 84.9) | 87.5 (52.9, 97.8) | 96 (80.5, 99.3) | 43.8 (23.1, 66.8) | 5.82 (0.79, 42.6) | 0.32 (0.24, 0.40) | |
| ≥0.857 | 60.6 (43.7, 75.3) | 100 (67.6, 100) | 100 (83.9, 100) | 38.1 (20.8, 59.1) | – | 0.39 (0.34, 0.46) | |
Abbreviations: AUC, area under the curve; LR−, likelihood ratio negative; LR+, likelihood ratio positive; NPV, negative predictive value; PPV, positive predictive value.