Table 2 Diagnostic accuracy, sensitivity, specificity, and positive (PPV) of white blood cell (WBC) count, C-reactive protein (CRP), percentage of neutrophil (PN) and combined WBC, CRP and PN in diagnosing acute appendicitis
Indices of diagnostic values | ||||
|---|---|---|---|---|
Diagnostic method | Diagnostic accuracy | Sensitivity (%) | Specificity (%) | PPV (%) |
CRP | 83.2 | 85.1 | 72 | 94.7 |
WBC | 82.6 | 85.1 | 68 | 94 |
PN | 77.5 | 79.1 | 68 | 93.6 |
CRP + LEU | 90.1 | 92.6 | 75 | 95.8 |
CRP + PN | 91.1 | 94.3 | 72 | 95.2 |
LEU + PN | 87.1 | 89.9 | 71.4 | 94.7 |
CRP + LEU + PN | 91.9 | 95.3 | 91.9 | 95.3 |