Table 3.
Estimation of diagnostic validity of RPA, IHA and ELISA
| Methods | TRUE positive | FALSE negative | TRUE negative | FALSE positive | Sensitivity (%, 95% CIa) | Specificity (%, 95% CIa) | PPV% (95% CIa) | NPV% (95% CIa) |
|---|---|---|---|---|---|---|---|---|
| RPA | 61 | 0 | 134 | 5 | 100% (100) | 96.40% (99.32–99.54) | 92.41% (86.06–98.83) | 100% (100) |
| IHA | 49 | 12 | 116 | 23 | 80.32% (70.37-90.45) | 83.45% (77.22-89.67) | 68.06% (57.37-78.82) | 90.67% (85.64-95.72) |
| ELISA | 52 | 9 | 130 | 9 | 85.24% (76.34-94.15) | 93.52% (89.44-97.61) | 85.37% (76.34-94.18) | 93.51% (89.45-97.67) |
a Exact 95% confidence intervals (CIs)