Table 4 The clinical performance of the qq-PCR assay for SARS-CoV-2
2019-nCoV qPCR | Performance characteristics | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Positive | Negative | Sensitivity (%) | Specificity (%) | Youden's Index | PPV (%) | NPV (%) | Agreement | Kappa | |
qq-PCR assay | |||||||||
Positive | 34 | 0 | 91.9 | 100.0 | 0.919 | 100.0 | 98.0 | 98.4 | 0.948 (P < 0.01) |
Negative | 3 | 147 | |||||||
Total | 37 | 147 | |||||||