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Table 5 Results of the final generalised mixed model on mortality during the first 10 days of life in 874 piglets from the four herds

From: The effect of New Neonatal Porcine Diarrhoea Syndrome (NNPDS) on average daily gain and mortality in 4 Danish pig herds

Risk factor Coefficient SE OR1 P-value
Intercept (1000 g birth weight) -3.9    
Herd2     < 0.001
  Herd 4 0a    
  Herd 3 1.0a 0.7 2.3  
  Herd 2 0.5a 0.7 1.3  
  Herd 1 2.7b 0.6 11.8  
Parity     0.063
  2nd-7th 0    
  1st 0.8 0.4 1.8  
Birth weight (per 100 g increase) -0.3 0.06 0.6 <0.001
Gender     0.001
  Female 0    
  Male 0.9 0.3 2.1  
Random effect of litter4 29%    
  1. 1The OR presented is the population average OR, and relates to an average piglet in any litter of the study.
  2. 2Herds with different letters as superscript are significantly different (α < 0.05) when compared pairwise.
  3. 3Parity was kept in the model due to its biological significance.
  4. 4The random effect of litter is displayed as the Intraclass Correlation Coefficient (ICC).