Table 4 Accuracy of the nomogram in predicting the risk of severe CAP at the optimal threshold value
Variable | Value (95%CI) | |
|---|---|---|
Training set | Testing set | |
Accuracy | 0.90 (0.88, 0.92) | 0.89 (0.85, 0.93) |
AUC | 0.87 (0.83, 0.90) | 0.84 (0.78, 0.90) |
Sensitivity | 0.90 (0.81, 0.95) | 0.82 (0.66, 0.92) |
Specificity | 0.71 (0.67, 0.74) | 0.71 (0.65, 0.76) |
Positive predictive value | 0.63 (0.41, 0.80) | 0.57 (0.20, 0.88) |
Negative predictive value | 0.91 (0.88, 0.93) | 0.90 (0.86, 0.93) |
Positive likelihood ratio | 13.63 (6.17, 30.11) | 10.75 (2.51, 45.99) |
Negative likelihood ratio | 0.82 (0.74,0.91) | 0.89 (0.79, 1.01) |