Table 2 Posterior median and 95% credible interval (CI95) for a conditional independent test for the determination of sensitivity (Se) and specificity (Sp) of three Mycoplasma bovis antibody ELISA tests on 156 bulk tank milk from dairy herds while using four different cutoff values for the sample-to-positive percentage (S/P%) of the ID-screen. The optimal cutoff value of ≥ 50% for the ID-screen (bold) was used for further Bayesian latent class modelling

ID-screen^a

91.4 (70.7–99.7)

67.2 (53.6–92.6)

91.6 (66.5–99.7)

80.5 (68.5–96.7)

78.7 (46.6–98.6)

93.1 (84.6–99.4)

13.7 (0.32–82.5)

93.8 (18.9–99.7)

Bio K432_≥ 40%^b

25.6 (12.4–50.5)

96.8 (91.1–99.7)

37.4 (18.2–74.5)

97.7 (93.0-99.8)

45.2 (22.5–82.6)

97.0 (92.1–99.7)

21.9 (0.85–91.1)

90.0 (9.46–99.2)

Bio K302_≥ 37%^c

69.2 (43.3–96.4)

85.8 (74.8–97.4)

66.8 (43.2–92.0)

79.3 (69.9–88.6)

69.0 (45.2–92.3)

76.8 (68.1–86.0)

44.1 (15.8–95.5)

66.7 (0.48–84.8)

Prev

30.8 (14.4–56.1)

22.2 (9.71–41.3)

16.8 (7.30–31.9)

28.9 (3.7–96.2)