Table 1 Multivariable logistic regression model of risk factors for colic in a population of horses that exhibit crib-biting / windsucking behaviour.

Model 1: History of colic ever

Duration of ownership (months)

0.016

0.003

1.02

1.01 - 1.02

<0.001

Duration of stabling in the Autumn (hours per day)

0.041

0.019

1.04

1.003 - 1.08

0.035

CBWS behaviour associated with eating forage

No

Ref.

Yes

0.773

0.279

2.17

1.25 – 3.74

0.006

Fed haylage

No

Ref.

Yes

0.733

0.279

2.08

1.20 – 3.60

0.008

Model 2: History of colic in the last 12 months

Severity of CBWS behaviour (cm)

0.217

0.059

1.24

1.10 - 1.40

<0.001

Duration of stabling in the Autumn (hours per day)

0.050

0.021

1.05

1.01 – 1.10

0.016