Table 3.
Assessment of dry and wet nasal swabs
| RT-PCR positive, n | RT-PCR negative, n | Total | Metrics | |
|---|---|---|---|---|
|
Standard dry swab positive
|
19 |
0 |
19 |
PPV = 100% |
|
Standard dry swab negative
|
2 |
329 |
331 |
NPV = 99.39% |
|
Total
|
21 |
329 |
350 |
|
|
|
Sensitivity = 90.48% |
Specificity = 100% |
|
dOR = 3120.5 |
|
Standard wet swab positive
|
16 |
0 |
16 |
PPV = 100% |
|
Standard wet swab negative
|
5 |
329 |
334 |
NPV = 98.43% |
|
Total
|
21 |
329 |
350 |
|
| Sensitivity = 76.19% | Specificity = 100% | dOR = 1049.6 |
dOR – diagnostic odds ratio, NPV – negative predictive value, PPV – positive predictive value