Table 3 Performances of the PCP score
Area under the ROC curve | |
AUC (95% CI) | 0.535 (0.449–0.620) |
Z statistics | 0.425 |
Youden index | |
Youden index J | 0.2025 |
Associated criterion | > 2.5 |
Sensitivity | 53.82 |
Specificity | 66.41 |
Using a cut-off 3.0 | |
Sensitivity, 95% CI | 38.5% (13.9–68.4) |
Specificity, 95% CI | 70.3% (61.6–78.1) |
Negative predictive value (for a PCP prevalence of 10%) | 58.8% |
Positive predictive value (for a PCP prevalence of 10%) | 59.8% |
Positive likelihood ratio | 1.30 |
Negative likelihood ratio | 0.88 |