Table 4 Posterior median and 95% credible interval (CI95) for the conditional independent test for the determination of sensitivity (Se), specificity (Sp), and prevalence (Prev) of three Mycoplasma bovis antibody ELISA tests (ID screen, Bio K302, Bio K432) on 156 bulk tank milk samples from Belgian and Swiss dairy herds while using optimized cutoff values for the sample-to-positive percentage (S/P%) (final model)
Test | S/P% cutoff | Se (%) (CI95) | Sp (%) (CI95) | Prev (%) (CI95) | Youden index (J) |
|---|---|---|---|---|---|
ID-screen | ≥ 50% | 89.0 (67.7–99.4) | 83.4 (73.7–93.5) | 26.1 (16.3–40.5) | 0.72 |
Bio K302 | ≥ 30% | 85.5 (64.9–98.9) | 77.2 (67.6–86.6) | 26.1 (16.3–40.5) | 0.63 |
Bio K432 | ≥ 20% | 82.0 (62.0-97.7) | 75.1 (65.7–84.3) | 26.1 (16.3–40.5) | 0.57 |