Risk of inflammatory bowel disease in patients with chronic obstructive pulmonary disease: A nationwide, population-based study

Table 2 Incidence rate and risk of inflammatory bowel disease in patients with chronic obstructive pulmonary disease

		Event	DURATION (Person-years)	Incidence rateof IBD	Model 11 HR (95%CI)	Model 22 HR (95%CI)	P value
		IBD
COPD	No	1846	25697723.08	7.18	1 (Ref.)	1 (Ref.)	< 0.001
	Yes	513	5139283.39	9.98	1.39 (1.26-1.53)	1.379 (1.25-1.52)
		UC
COPD	No	1540	25697723.08	5.99	1 (Ref.)	1 (Ref.)	< 0.001
	Yes	406	5139283.39	7.9	1.32 (1.18-1.47)	1.315 (1.18-1.47)
		CD
COPD	No	306	25697723.08	1.19	1 (Ref.)	1 (Ref.)	< 0.001
	Yes	107	5139283.39	2.08	1.75 (1.40-2.171)	1.691 (1.35-2.10)

¹Model 1: adjustment for age and sex;

²Model 2: adjustment for model 1+ place of resident, income, diabetes mellitus, hypertension, dyslipidemia. CD: Crohn’s disease; CI: Confidence interval; COPD: Chronic obstructive pulmonary disease; HR: Hazard ratio; IBD: Inflammatory bowel disease; UC: Ulcerative colitis.