Table 3.

Risk factors for diarrhoea ⩽3 identified by multivariable analysis

Variable	OR	95% CI	P value
Fixed effects
Kitten	2.54	1.45–4.46	0.001
Cats per pen	1.24	1.04–1.48	0.02
Season (summer vs winter)	0.99	0.55–1.77	0.96
Random effects
Centre	0.07	0.003–1.490
Centre >pen	3.42	1.89–6.17

OR = odds ratio; CI = confidence interval