Table 3.

Risk of inflammatory bowel disease after bariatric surgery among individuals recorded with a diagnosis of overweight/obesity.

	Bariatric surgery: events/1000 PY	No bariatric surgery: events/1000 PY	Age-, sex- and birth cohort adjusted HR [95% CI]	Multifactor-adjusted HR [95% CI]
Inflammatory bowel disease	0.940	0.820	1.16 [0.94–1.42]	1.08 [0.88–1.33]
Crohn’s disease	0.479	0.296	1.66 [1.24–2.22]	1.59 [1.18–2.13]
Ulcerative colitis	0.451	0.520	0.87 [0.65–1.17]	0.80 [0.59–1.07]

Multifactor-adjusted hazard ratios were adjusted for age, sex, birth cohort, education, and number of obesity-related comorbidities.

Cl, confidence interval; HR, hazard ratio; PY, person-years.