Table 3 Diagnostic performance of pooled blood sampling for CRBSI diagnosis when using individual blood culture as a gold standard
Culture profile | Individual blood | ||
|---|---|---|---|
Positive culture, N (%) | Negative culture, N (%) | ||
Pooled blood | Positive culture, N (%) | 9 (69.2) | 1 (2.7) |
Negative culture, N (%) | 4 (30.8) | 36 (97.3) | |
p-value | < 0.01 | ||
Sensitivity (%, 95% CI) | 69.2 (0.44–0.94) | ||
Specificity (%, 95% CI) | 97.3 (0.92–1.02) | ||
Positive predictive value (%, 95% CI) | 90 (0.71–1.09) | ||
Negative predictive value (%, 95% CI) | 90 (0.80–0.99) | ||
Positive likelihood ratio (95% CI) | 25.62 (3.58–177.63) | ||
Negative likelihood ratio (95% CI) | 0.32 (0.15–0.76) | ||