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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.

From: Epidemiology of impaction colic in donkeys in the UK

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

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