Table 1.
Binary classification table of symptomatic and asymptomatic Covid-19 patients by PCR testing characteristics for a symptomatic prevalence of 0.6%, asymptomatic rate of 49.8%, detection rate of 71%, and false negative rate of 1%.
| Covid-19 | No Covid-19 | |||
|---|---|---|---|---|
| Symptomatic | Asymptomatic | |||
| PCR (+) | 43 | 21 | 99 | 163 |
| PCR (−) | 17 | 9 | 9811 | 9837 |
| 60 | 30 | 9910 | 10,000 | |
| Proportion of PCR+ who are infected (PPV) | 39.2% | |||
| Proportion of PCR− who are uninfected (NPV) | 99.7% | |||
| P (Asymptomatic Covid-19, PCR+) | 13.0% | |||
| P (Asymptomatic Covid-19, PCR−) | 0.09% | |||