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Table 1 Results of logistic regression for univariate and multivariate models Only cases with full information on the analysed variable or set of variables were included.

From: Factors associated with the occurrence of MRSA CC398 in herds of fattening pigs in Germany

Variable

Category

No.

Positive %

Univariate

Multivariate

    

ORa

-95

% CI

+95% CI

ORa

-95

% CI

+95% CI

Region

East

65

39

Ref

     
 

Northwest

72

51

1.7

0.9

3.3

2.6

1.2

5.8

 

Southwest

153

59

2.3

1.3

4.1

3.8

1.9

7.9

Herd size

Small

83

30

Ref

     
 

Medium

87

60

3.5

2.7

7.2

3.8

1.9

7.5

 

Large

116

63

3.4

1.8

6.5

5.4

2.7

11

Production type

Farrow-to-finish

65

31

Ref

     
 

Wean-to-finish

38

63

3.9

1.7

9.0

4.0

1.6

10

 

Grow-to-finish

185

58

3.1

1.7

5.6

2.0

1.0

4.0

Purchase of pigs

No purchase

73

36

Ref

     
 

Purchase from 1-2 sources

165

55

2.2

1.3

3.9

   
 

Purchase from multiple sources

49

71

4.5

2.1

9.9

   

Animal flow system

Continuous

90

40

Ref

     
 

AI/AOb with cleanup

22

46

1.3

0.5

3.2

   
 

AI/AObwith cleanup and disinfection

154

59

2.2

1.3

3.4

   

Flooring

Concrete with bedding

25

16

Ref

     
 

Partially slatted

41

44

7.1

2.4

21

   
 

Totally slatted

219

58

4.1

1.2

14

   

Cattle in the farm

Present

235

56

Ref

     
 

Absent

55

36

0.5

0.2

0.8

   

Use of antimicrobialsc

No

126

42

Ref

     
 

Yes

164

60

2.1

1.3

3.4

   
  1. Categories with the lowest MRSA prevalence were chosen as references (indicated as Ref).
  2. a p-value < 0.05
  3. b All in/all out
  4. c Reported treatments at group level
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BMC Veterinary Research

ISSN: 1746-6148

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