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Table 6 Two level logistic binomial models of the risks associated with foot lesions and swollen joints and claws 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 Sole bruise
286 litters
Sole erosion
278 litters
Swollen joint/claw
284 litters
Intercept coefficient 2.2 -2.0 -3.8
  OR CI OR CI OR CI
Age 0.3 0.3, 0.4 1.0 0.9, 1.2 1.1 0.9, 1.3
Floor/bedding       
   Solid with bedding       
   Partly slatted with bedding 2.2 1.1, 4.6 1.3 0.5, 3.0 1.4 0.6, 3.5
   Partly slatted with bedding in some areas 4.2 2.0, 9.0 2.9 1.2, 7.1 2.5 1.1, 6.1
   Partly slatted no bedding 2.6 1.3, 5.0 2.4 1.1, 5.5 1.7 0.7, 3.9
   Fully slatted 3.0 1.4, 6.5 1.3 0.5, 3.3 3.0 1.2, 7.4
Wet sow lying area       
   No       
   Yes    0.5 0.3, 0.9   
Worn sow dunging area       
   No       
   Yes      2.8 1.3, 6.0
Random effects Var. SE Var. SE Var. SE
   Farms 0.5 0.2 1.1 0.3 0.3 0.2
   Pens 1.0 0.2 0.8 0.2 0.6 0.3
Hosmer-Lemeshow goodness-of-fit χ 2 P value χ 2 P value χ 2 P value
  0.5 0.78 6.2 0.10 3.8 0.20