Table 3 Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of the 4 assays
Test (Assay) | OraQuick | UniGold | Determine | Abbot Architect |
|---|---|---|---|---|
No of positive results(a) | 245 | 247 | 249 | 267 |
No of Negative results(d) | 2319 | 2313 | 2311 | 2297 |
False Negative results© | 22 | 20 | 18 | 0 |
False Positive results(b) | 0 | 0 | 4 | 0 |
Sensitivity (%) | 91.8 | 92.5 | 93.3 | 100 |
Specificity (%) | 100 | 100 | 99.8 | 100 |
PPV (%) | 100 | 100 | 98.4 | 100 |
NPV (%) | 99.1 | 99.1 | 99.2 | 100 |