Table 1 Summary of clustering by magnitude of farm PP trajectories.

From: Exploring the longitudinal dynamics of herd BVD antibody test results using model-based clustering

Component

Mean PP

Range of trends of mean PP

No. of farms (%)

1. High levels

89.3

85–92

6 (15.3)

2. Medium levels

68.0

67–70

12 (30.8)

3. Increasing levels

59.8

25–79

7 (18.0)

4. Relatively low levels

45.9

37–51

14 (35.9)