Table 1.
Performance of the three screening methods for detection of CPE in surveillance swabs
| Methoda | Performance (% [95% CI])b |
||||
|---|---|---|---|---|---|
| Sensitivity | Specificity | PPV | NPV | Accuracy | |
| CDT | 94.8 (87.8–98.0) | 100 (95–100) | 100 (95–100) | 94.8 (87.8–98.0) | 97.4 (95.1–99.6) |
| MacERT | 96.9 (90.5–99.1) | 98.9 (93.2–99.9) | 98.9 (93.4–99.9) | 96.8 (90.2–99.1) | 97.9 (95.8–99.9) |
| PCR-S | 94.8 (87.8–98.0) | 100 (95–100) | 100 (95–100) | 94.8 (87.8–98.0) | 97.4 (95.1–99.6) |
a
CDT, combined disk test; MacERT, MacConkey agar plate with an ertapenem disk; PCR-S, PCR from a rectal swab.
b
CI, confidence interval; PPV, positive predictive value; NPV, negative predictive value.