Table 2 Comparison for sensitivity and specificity between RAT and real-time RT-PCR test results
Rapid antigen test (RAT) | Real-time RT-PCR for COVID-19 | Total | |
|---|---|---|---|
Positive | Negative | ||
Positive | 112 | 2 | 114 |
Negative | 37 | 178 | 215 |
Total | 149 | 180 | 329 |
Performance parameters | Value | 95% CI |
|---|---|---|
Sensitivity | 75.16% | 67.43 to 81.87% |
Specificity | 98.89% | 96.04 to 99.87% |
PPV | 98.25% | 93.36 to 99.55% |
NPV | 82.79% | 78.43 to 86.42% |
Accuracy | 88.15% | 84.15 to 91.43% |
Kappa | 0.756 | 0.686 to 0.826 |
SE of kappa | 0.036 |