TABLE 2.
Reverse-algorithm comparisona
| Test and result | No. (%) of indicated positive specimens that were verified to be: |
Total (%) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | |
|---|---|---|---|---|---|---|---|
| RX | NR | ||||||
| Liaison | |||||||
| RX | 45 (4.4) | 2 (0.2) | 47 (4.6) | ||||
| NR | 0 (0.0) | 980 (95.4) | 980 (95.4) | ||||
| Totals | 45 (4.4) | 982 (95.6) | 1,027 | 100.0 | 99.8 | 95.7 | 100.0 |
| Architect | |||||||
| RX | 45 (4.4) | 5 (0.5) | 50 (4.9) | ||||
| NR | 0 (0.0) | 977 (95.1) | 977 (95.1) | ||||
| Totals | 45 (4.4) | 982 (95.6) | 1,027 | 100.0 | 99.5 | 90.0 | 100.0 |
a
RX, reactive; NR, nonreactive; PPV, positive predictive value; NPV, negative predictive value.