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Table 3 Parameters affecting the abundance of Ixodes ricinus ticks on small mammals in Germany according to factors influencing the prevalence and mean intensity

From: Host–parasite interactions of rodent hosts and ectoparasite communities from different habitats in Germany

Factors affecting prevalence

Predictors

OR

95% CI

P value

(Intercept)

0.09

0.05–0.16

< 0.001*

Trapping location

 Recreational area

Reference

  

 Forest

3.19

1.98–5.14

< 0.001*

Season

 Autumn/winter

Reference

  

 Spring

2.99

1.63–5.47

< 0.001*

 Summer

1.73

1.07–2.78

0.024*

Polyparasitism

4.76

3.65–6.22

< 0.001*

Factors affecting mean intensity

 Predictors

IRR

95% CI

P value

(Intercept)

0.62

0.30–1.28

0.200

Host species

 Myodes glareolus

Reference

  

 Apodemus flavicollis

2.45

1.76–3.40

< 0.001*

Host sex

 Female

Reference

  

 Male

1.84

1.33–2.56

< 0.001*

Age category

 Juvenile

Reference

  

 Young adult

1.79

1.04–3.07

0.034*

 Adult

1.76

1.00–3.09

0.049

Season

 Autumn/winter

Reference

  

 Spring

2.01

1.14–3.55

0.016*

 Summer

0.97

0.64–1.47

0.888

  1. IRR, Incidence rate ratio; OR, odds ratio
  2. *Significant effect at P ≤ 0.05