Inflammatory bowel disease in pregnancy: a population‐based study of prevalence and pregnancy outcomes

Objective To determine the prevalence of the inflammatory bowel diseases (IBD), ulcerative colitis (UC) and Crohn's disease (CD), in pregnant women and determine pregnancy and fetal/neonatal outcomes. Design Population‐based cohort study. Setting New South Wales, Australia, 2001–11. Population A total of 630 742 women who delivered at ≥20 weeks of gestation. Methods Descriptive and multivariate regression analyses of perinatal data linked to hospital admission data. We compared birth outcomes of women with and without a documented diagnosis of IBD. Main outcome measures Caesarean section, severe maternal morbidity, preterm birth