Table 3 Diagnostic Accuracy of PCT point-of-care in Identifying Infants with Bacterial Infections with 95% Confidence Intervals
PCT Cut-off 0.25 ng/ml | PCT Cut-off 0.5 ng/ml | PCT Cut-off 1.0 ng/ml | ||||
|---|---|---|---|---|---|---|
Invasive Bacterial Infection | All Bacterial Infection | Invasive Bacterial Infection | All Bacterial Infection | Invasive Bacterial Infection | All Bacterial Infection | |
Sensitivity | 1.00 (0.40 to 1.00) | 0.86 (0.56 to 0.97) | 1.00 (0.40 to 1.00) | 0.86 (0.56 to 0.97) | 1.00 (0.40 to 1.00) | 0.86 (0.56 to 0.97) |
Specificity | 0.72 (0.63 to 0.80) | 0.77 (0.68 to 0.84) | 0.91 (0.84 to 0.95) | 0.97 (0.92 to 0.99) | 0.92 (0.85 to 0.96) | 0.98 (0.93 to 0.99) |
Positive Predictive Value | 0.11 (0.03 to 0.26) | 0.32 (0.18 to 0.49) | 0.27 (0.09 to 0.55) | 0.80 (0.51 to 0.95) | 0.29 (0.10 to 0.58) | 0.86 (0.56 to 0.97) |
Negative Predictive Value | 1.00 (0.95 to 1.00) | 0.98 (0.93 to 1.00) | 1.00 (0.96 to 1.00) | 0.98 (0.93 to 1.00) | 1.00 (0.96 to 1.00) | 0.98 (0.93 to 1.00) |