TABLE 2.
Diagnostic yield of PCR assay with nonblood samplesa
| Parameter | Percent (95% CI)
|
|
|---|---|---|
| PCR assay | Culture | |
| Sensitivity | 97.1 (93.1–99.8) | 29.4 (18.5–40.2) |
| Specificity | 94.1 (88.5–99.7) | 100 |
| PPV | 94.3 (88.8–99.8) | 100 |
| NPV | 97.0 (92.9–99.8) | 58.6 (46.9–70.3) |
| Positive LR | 16.5 (5.1–59.7) | 20.1 (2.2–196.7) |
| Negative LR | 0.03 (0.01–0.16) | 0.71 (0.54–0.83) |
a
Abbreviations: CI, confidence interval; PPV, positive predictive value; NPV, negative predictive value; positive LR, positive likelihood ratio; negative LR, negative likelihood ratio.