Table 4 The positive and negative predictive values of three serological tests
Test | Variable | Livestock farmer (95 % CrI) Prevalence: 1.1 % | PP patients (95 % CrI) Prevalence: 1.7 % |
|---|---|---|---|
iELISA | PPV (%) | 36.3 (5.6–70.5) | 41.4 (6.6–76.1) |
NPV (%) | 99.6 (98.9–99.9) | 99.5 % (98.6–99.9) | |
Rose Bengal | PPV (%) | 29.9 (3.6–69.5) | 42.7 (6.4–83.2) |
NPV (%) | 99.8 (99.2–99.9) | 99.6 % (98.8–99.9) | |
Standard tube agglutination | PPV (%) | 27.9 (3.6–62.0) | 39.8 (6.0–75.2) |
NPV (%) | 99.8 (99.3–99.9) | 99.6 % (98.9–99.9) |