Table 1 Contingency table (2 × 2) for the comparison of test performance for Aptima and TaqPath
TaqPath* results | ||||
|---|---|---|---|---|
Positive | Negative | Total | ||
Aptima results | Positive | A | B | A + B |
Negative | C | D | C + D | |
Total | A + C | B + D | A + B + C + D | |
Parameter | Formula |
|---|---|
Sensitivity of Aptima | 100 × A/(A + C) |
Specificity of Aptima | 100 × D/(B + D) |
Overall agreement | 100 × (A + D)/(A + B + C + D) |