Carbapenemase gene | Cutoff Ct value (cycles) | % (95% confidence interval) | AUC | |||
---|---|---|---|---|---|---|
Sensitivity | Specificity | PPV | NPV | |||
KPC | ≤38.0 | 83.3 (51.6–97.9) | 99.8 (98.6–100.0) | 90.9 (58.7–99.8) | 99.5 (98.2–99.9) | 0.92 (0.88–0.94)* |
≤35.0 | 83.3 (51.6–97.9) | 100.0 (99.1–100.0) | 100.0 (69.2–100.0) | 99.5 (98.2–99.9) | 0.92 (0.89–0.94)* | |
IMP-1 | ≤38.0 | 100.0 (15.8–100.0) | 97.5 (95.5–98.8) | 16.7 (2.1–48.4) | 100.0 (99.1–100.0) | 0.99 (0.97–1.00)* |
≤35.0 | 50.0 (1.3–98.7) | 99.3 (97.8–99.8) | 25.0 (0.6–80.6) | 99.8 (98.6–100.0) | 0.75 (0.70–0.79) | |
Total | ≤38.0 | 100.0 (78.2–100.0) | 96.7 (94.4–98.2) | 53.6 (33.9–72.5) | 100.0 (99.0–100.0) | 0.98 (0.97–0.99)* |
≤35.0 | 93.33 (68.1–99.8) | 99.2 (97.8–99.8) | 82.4 (56.6–96.2) | 99.7 (98.6–100.0) | 0.96 (0.94–0.98)* |