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Table 1 Results of the generalised linear model for tick load (number of ticks/individual) on Boran cattle as response variables

From: Interactive effects of biological, human and environmental factors on tick loads in Boran cattle in tropical drylands

Model

Explanatory variables

Wald Chi-square

AIC

df

P

1

Season

61.96

 

1

< 0.001

Body condition

48.40

 

1

< 0.001

Season × body condition

2.67

2527.4

1

0.102

2

Sex

0.35

 

1

0.550

Season

66.02

 

1

< 0.001

Sex × season

1.56

2649.5

1

0.211

3

Age

6.18

 

2

0.046

Season

39.23

 

1

< 0.001

Age × season

9.97

2639.4

2

0.007

4

Season

14.29

 

1

< 0.001

Management system

35.05

 

1

< 0.001

Season × management system

5.41

2606.6

1

0.020

  1. Each model is numbered. The table specifies for each explanatory variable in the model (including the interaction between two explanatory variables) the test statistic Wald Chi-square and the corresponding P values, and for the model the Akaike Information Criterion (AIC). For all models, N = 571