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Table 4 The crude odds ratios of relevant risk factors for fur animal epidemic necrotic pyoderma (FENP)

From: Questionnaire survey of detrimental fur animal epidemic necrotic pyoderma in Finland

Risk factor

Case farms (n = 92)

Control farms (n = 134)

OR (95% CI)

Exposed (n)

Non-exposed (n)

Exposed (n)

Non-exposed (n)

All farms

 Farm type

  Mixed farm vs mink farm

51

33

16

24

2.3 (1.1–5.0)

  Mixed farm vs fox farm

51

33

25

74

4.6 (2.4–8.6)

 Purchases

  Domestic purchases

86

2

118

15

3.7 (0.8–17.1)

  All imports combined

32

56

24

96

2.3 (1.2–4.3)

  Imports from Denmark

17

71

3

117

9.3 (2.6–33.0)

  Imports from Poland

10

78

2

118

7.6 (1.6–35.5)

 Drinking system

  Cup

22

68

58

72

0.4 (0.2–0.7)

  Nipple

67

23

66

64

2.8 (1.6–5.1)

Farms with mink (including mixed farms)

 Fence around the mink premises

38

19

21

28

2.7 (1.2–5.9)

 Access by birds to shelter buildings

25

34

10

38

2.8 (1.2–6.7)

 Access by wild animals to shelter buildings

13

42

2

43

6.7 (1.4–31.3)

 Size of the farm: >750 vs ≤750 breeder mink

39

13

19

24

3.8 (1.6–9.0)

 Hay as bedding material

9

48

18

31

0.3 (0.1–0.8)

 Pre-weaning diarrhea

31

30

15

34

2.3 (1.1–5.2)

 Plasmacytosis

13

48

23

26

0.3 (0.1–0.7)

Farms with foxes (including mixed farms)

 Access by wild animals to shelter buildings

22

44

18

75

2.1 (1.0–4.3)

 Size of the farm: >320 vs ≤320 breeder foxes

44

20

44

54

2.7 (1.4–5.2)

Mixed farms

 Size of the farm large vs small (based on the most numerous species)

26

18

13

19

3.0 (1.2–7.9)

 Fence around mink premises

33

9

12

13

4.0 (1.4–11.7)

  1. Number (n) and crude odds ratios (OR, with only one factor in the logistic regression model at a time) for the most prominent risk factors for FENP