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Table 7 Two level logistic binomial models of the risks associated skin abrasions in preweaning piglets from 98 British farms

From: A cross sectional study of prevalence, risk factors, population attributable fractions and pathology for foot and limb lesions in preweaning piglets on commercial farms in England

All pens Skin abrasion
278 litters
Skin abrasion <1-wk
71 litters
Intercept coefficient 1.5 1.2
  OR CI OR CI
Age 0.6 0.5, 0.7   
Floor/bedding     
   Solid with bedding     
   Partly slatted with bedding 0.6 0.3, 1.1 0.6 0.2, 2.0
   Partly slatted with bedding in some areas 1.0 0.6, 1.8 0.8 0.2, 2.8
   Partly slatted no bedding 0.7 0.4, 1.1 0.4 0.1, 1.2
   Fully slatted 0.9 0.5, 1.7 0.3 0.0, 0.9
Worn sow lying area     
   No     
   Yes 1.6 1.1, 2.4 3.0 1.5, 6.0
Random effects Var. SE Var. SE
   Farms 0.2 0.1 0.7 0.2
   Pens 0.8 0.1   
Hosmer-Lemeshow goodness-of-fit χ 2 P value χ 2 P value
  3.2 0.52 0.4 0.98