Table 6

Multivariable conditional logistic regression model 2 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)

1.09

1.00

1.182

0.03


Categorical


Dental disease

No

1.00

Yes

29.73

3.95

223.67

<0.001


Model 2 included the variables age, dental disease' farm and extra rations during the backwards stepwise regression. LRS = likelihood ratio test statistic

Cox et al. BMC Veterinary Research 2007 3:1   doi:10.1186/1746-6148-3-1

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