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

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

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

ISSN: 1746-6148