Table 4.
Sensitivity, specificity, positive predictive value and negative predictive value for infection markers in diagnosing bacteremia
| Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | |
|---|---|---|---|---|
| CRP level | 75.0 | 37.0 | 54.3 | 59.6 |
| WBC count | 57.6 | 53.3 | 55.2 | 55.7 |
| Neutrophil count | 57.6 | 59.8 | 58.9 | 58.5 |
| Lymphocyte count | 73.9 | 57.6 | 63.6 | 68.8 |
| NLCR | 77.2 | 63.0 | 67.6 | 73.4 |
Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of the C-reactive protein (CRP) level (cut-off ≥50 mg/l), white blood cell (WBC) count (cut-off < 4.0 × 109/l or > 12.0 × 109/l), neutrophil count (cut-off > 10.0 × 109/l), lymphocyte count (cut off < 1.0 × 109/l) and the neutrophil-lymphocyte count ratio (NLCR) (cut-off > 10.0) in diagnosing bacteremia.