Cut-offs | Viral load | Sensitivity | Specificity | PPV | NPV | |
---|---|---|---|---|---|---|
 ≥ 20 |  < 20 | |||||
 < 80% | 11 | 20 | 45.8 | 63.0 | 35.5 | 72.3 |
 ≥ 80% | 13 | 34 |  |  |  |  |
 < 85% | 14 | 22 | 58.3 | 59.3 | 38.9 | 76.2 |
 ≥ 85% | 10 | 32 |  |  |  |  |
 < 90% | 15 | 26 | 62.5 | 52.7 | 36.6 | 76.3 |
 ≥ 90% | 9 | 29 |  |  |  |  |
 < 95% | 19 | 33 | 79.2 | 40.0 | 36.5 | 81.5 |
 ≥ 95% | 5 | 22 |  |  |  |  |
 < 100% | 22 | 46 | 91.7 | 16.4 | 32.3 | 81.8 |
100% | 2 | 9 | Â | Â | Â | Â |