Background We sought to review Crohn's disease (CD) case definitions that use diagnosis,
procedure, and medication claims. Methods We searched PubMed and Embase from …

Purpose The Danish National Patient Registry (DNPR) is recognized for providing high-
quality data. However, only a few minor studies have validated inflammatory bowel disease …

Background Primary sclerosing cholangitis (PSC) is one of the leading indications for liver
transplantation in Europe, and a major risk factor for cancer in inflammatory bowel disease …

Background Inflammatory bowel disease (IBD) may be associated with increased dementia
risk, but the literature is conflicting. Aim To investigate dementia risk in patients with IBD …

Background Birth cohort studies with linked register-based data on inflammatory bowel
disease (IBD) provide opportunities to prospectively study early-life determinants of the …

Background The aim of this study was to examine the association between appendectomy
and advanced colorectal neoplasia (aCRN) in patients with inflammatory bowel disease …

Purpose The Swedish National Patient Register (NPR) is often used in observational studies
of childhood-onset inflammatory bowel disease (IBD)(< 18 years of age) and its subtypes …

Background Previous research indicates that the increased relative risk of colorectal cancer
(CRC) in inflammatory bowel disease (IBD) is limited to young‐onset IBD. Aim To estimate …

Objective In a setting with an extensive SARS-CoV-2 test strategy and availability of effective
vaccines, we aimed to investigate if patients with inflammatory rheumatic diseases (IRD) …

METHODS: This population-based cohort study included all live-born singletons born in
Denmark during 1995–2016 (n= 1,343,960). The exposure was maternal IBD. Main outcome …