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Table 6 Results of herd-specific generalized linear mixed models on NNPDS

From: Risk factors and epidemiological characteristics of new neonatal porcine diarrhoea syndrome in four Danish herds

Risk factor

Herd 1

Herd 2

Herd 3

Herd 4

Coef.

SE

ORPA1

P

Coef.

SE

ORPA

P

Coef.

SE

ORPA

P

Coef.

SE

ORPA

P

Intercept

0.9

   

−1.9

   

−0.7

   

−1

   

Parity

   

0.03

   

<0.01

   

<0.01

   

0.04

2nd-7th

0

   

0

   

0

   

0

   

1st

2.1

0.99

6.3

 

2.2

0.6

7.9

 

1.4

0.3

4

 

1

0.5

2.4

 

Birth weight

   

0.11

   

0.38

   

0.55

   

0.02

Per 100 g increase

−0.1

0.06

  

−0.1

0.07

  

−0.1

0.05

  

−0.2

0.06

0.8

 

Faecal consistency

   

0.14

   

0.04

   

0.62

   

0.12

Normal

0

   

0

   

0

   

0

   

Liquid

0.7

0.45

  

0.7

0.3

1.7

 

0.2

0.38

  

0.6

0.4

  

ICC 2 litter

39%

   

26%

   

1%

   

15%

   
  1. 1The population average OR accounts for an average piglet in any litter.
  2. 2Intraclass Correlation Coefficient (the percentage of total variation in data that is explained by the random litter effect).
  3. Variables inserted in the full models included parity, birth weight and fecal consistency day one. OR’s are only displayed for variables with significant effect. Estimates for non-significant variables were extracted from the un-reduced models. Significant associations are presented in bold.
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BMC Veterinary Research

ISSN: 1746-6148

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