Table 3 The efficacy of PCT, CRP and WBC in the diagnosis of bacterial ARTI
Index | AUC (95% confidence interval) | Cut-off | Specificity (%) | Sensitivity (%) | Positive predictive value (%) | Negative predictive value (%) |
|---|---|---|---|---|---|---|
PCT | 0.65 (0.59–0.71) | 0.49 | 74.80 | 56.5 | 50.4 | 79.1 |
CRP | 0.55 (0.48–0.62) | 10.63 | 72.3 | 46.3 | 43.1 | 74.8 |
WBC | 0.58 (0.52–0.65) | 11.40 | 81.1 | 31.5 | 43.0 | 72.3 |