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Table 4 Characteristics of retained components from PCA of BPHS variables

From: BPEX Pig Health Scheme: a useful monitoring system for respiratory disease control in pig farms?

Components

(Eigenvalues)

BPHS 1

(2.75)

BPHS 2

(1.32)

BPHS 3

(1.12)

Unexplained

Variance

EP score

0.51

-0.20

0.13

38.5%

Severe pleurisy

0.56

-0.04

-0.17

31.7%

Mild pleurisy

0.17

0.81

0.10

18.4%

Acute pleuropneumonia

0.40

-0.42

-0.07

45.2%

Viral-type lesions

0.31

0.12

0.79

13.4%

Pericarditis

0.37

0.33

-0.56

25.7%