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Table 2 The univariable association between the percentage of IFN-g tested animals that had a subsequent positive skin-test and independent variables

From: Should they stay, or should they go? Relative future risk of bovine tuberculosis for interferon-gamma test-positive cattle left on farms

Variable

Class

N

N with subsequent positive skin-test

% Skin-test positive

p-value (χ2 test)

Gamma

Negative

21713

1323

6.55

<0.001

 

Positive

1107

138

14.26

 

Herd

Beef

8342

400

5.15

<0.001

 

Dairy

14478

1061

7.97

 

DVO

North

6478

281

4.62

<0.001

 

Southwest

7113

427

6.61

 
 

Southeast

9229

753

8.78

 

Sex

Male

3409

75

2.21

<0.001

 

Female

19411

1386

7.87

Â