Table 3.

Results from logistic regression analysis showing adjusted odds ratio of prevalence of ulcerative colitis dependent on different climatic variables

	aOR	95% CI	p-value
Summer temperature	0.91	(0.85–0.97)	0.014
Average annual precipitation (dm)	1.00	(0.98–1.02)	0.959
Altitude (per 100 m)	1.04	(0.95–1.14)	0.454

Separate models were fitted for each climatic variable, but adjusted for gender, smoking, and urban/rural change status. For each climatic variable we report adjusted odds ratios (aOR), 95% confidence intervals and p-values.