Epidemiology of impaction colic in donkeys in the UK

BMC Veterinary Research

Table 4 Multivariable conditional logistic regression model 1a of risk factors for impaction colic in donkeys housed at the Donkey Sanctuary between 1st January 2003 and 31st March 2005.

Variable		Odds Ratio	Lower 95% CI	Upper 95% CI	LRS P-value
Continuous
Age (years)		1.06	1.02	1.11	0.008
Weight (kg)		0.98	0.96	0.99	<0.001
Categorical
Extra rations	No	1.00
	Yes	2.21	1.07	4.53	0.03
Musculo skeletal exam	No	1.00
	Yes	2.20	0.95	5.13	0.07
Previous colic	No	1.00
	Yes	6.80	1.65	27.95	0.008
Farm	1	1.00
	2	0.43	0.19	0.97	0.04

Model 1a excluded the variable dental disease during the backwards stepwise regression. LRS = likelihood ratio test statistic

ISSN: 1746-6148