Table 4 Area under the curve (AUC) of receiver operating curve (ROC) characteristic plot analysis.
Parameter | AUC | 95% CI* | P-value | Optimal cut off | Sensitivity | Specificity |
|---|---|---|---|---|---|---|
Combined Score | 0.86 | 0.81–0.90 | - | < 2 | 78.0 | 78.8 |
Temperature | 0.74 | 0.63–0.78 | <0.0001 | > 39.4 | 48.1 | 84.4 |
No sputum | 0.68 | 0.61–0.74 | <0.0001 | - | - | - |
Sodium | 0.71 | 0.63–0.78 | <0.0001 | < 133 | 64.6 | 70.8 |
Lactate dehydrogenase | 0.62 | 0.53–0.71 | <0.0001 | > 225 | 67.1 | 58.1 |
C-reactive protein | 0.76 | 0.70–0.82 | <0.0001 | > 187 | 71.6 | 64.7 |
Platelet counts | 0.71 | 0.64–0.78 | <0.0001 | < 171 | 45.7 | 83.6 |