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Table 2 Results of univariable logistic regression analyses of associations between case control farm status for canine distemper virus and explanatory variables

From: Associations between biosecurity and outbreaks of canine distemper on Danish mink farms in 2012–2013

Variable

Na

Cases

Controls

OR

P value

Vaccinationb

115

    

 Yes

 

47

51

0.20

0.006

 No

 

14

3

1

 

Vaccinationc

101

    

 No

 

14

3

6.46

0.017

 Winter

 

34

19

2.48

0.08

 Summer

 

13

18

1

 

Has the farmer visited other farms?

81

    

 Yes

 

10

37

0.27

0.007

 No

 

17

17

1

 

Did visitors use plastic boot covers?

114

    

 Yes

 

39

21

2.92

0.005

 No

 

21

33

1

 

Is hand wash possible at entrences/exits?

     

 Yes

114

4

25

0.08

<0.0001

 No

 

56

29

1

 

Does the farm have clean and dirty zones at entrances/exits?

114

    

 Yes

 

2

9

0.17

0.020

 No

 

58

45

1

 

Were foxes observed on or around the farm?

     

 Yes

104

25

9

5.00

0.0003

 No

 

25

45

1

 

Did farm dogs have access to the farm area?

     

 Yes

91

25

32

0.13

<0.0001

 No

 

29

5

1

 

Were cats observed on or around the farm?

     

 Yes

114

40

47

0.30

0.012

 No

 

20

7

1

 

Has the farmer purchased or shared equipment used on other farms?

     

 Yes

115

4

5

0.69

0.849

 No

 

57

49

1

 

Did the farmer purchase breeding animals from other farms?

113

    

 No

 

10

18

0.41

0.043

 Yes

 

49

36

1

 
  1. aNumber of farmers that answered the question
  2. bVaccination categorized in yes or no regardless of season
  3. cVaccination categorized according to season of vaccination