Skip to main content

Table 5 Multivariable conditional logistic regression model 1b 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

1.05

1.12

<0.001

Categorical

     

Extra rations

No

1.00

   
 

Yes

2.48

1.49

4.12

<0.001

Musculo skeletal exam

No

1.00

   
 

Yes

2.60

1.36

4.99

0.004

Previous colic

No

1.00

   
 

Yes

8.81

2.66

29.2

<0.001

Farm

1

1.00

   
 

2

0.37

0.21

0.64

<0.001

  1. Model 1b excluded the variables dental disease and weight during the backwards stepwise regression. LRS = likelihood ratio test statistic