Inpatient outcomes of inflammatory bowel disease in hospitalized patients with COVID-19: analysis of a nationally representative sample

Abstract

Purpose To compare the risks of adverse outcomes, including mortality, gastrointestinal bleeding, and venous thromboembolism, between COVID-19 patients with inflammatory bowel disease (IBD) and those without IBD. Methods We analyzed data from the National Inpatient Sample between January and December 2020. The study included adult patients with Crohn’s disease (CD) and ulcerative colitis (UC) who contracted COVID-19. Inpatient outcomes were compared between the IBD and non-IBD COVID-19 cohorts. Results Out of 1,050,045 COVID-19 hospitalizations, 0.28% had CD (2954 patients) and 0.26% had UC (2794 patients). After adjusting for confounding factors, UC patients had a significantly higher risk of deep vein thrombosis compared to non-IBD patients, with an adjusted odds ratio (aOR) of 2.55 (P < 0.001). However, CD patients did not show a significant association with deep vein thrombosis (aOR 1.29, P = 0.329). There were no significant associations between IBD patients (both UC and CD) and pulmonary embolism, nonvariceal gastrointestinal bleeding, or in-hospital mortality. UC patients had a longer average hospital stay (8.25 days) compared to non-IBD patients (adjusted mean difference 0.89, P = 0.007). Healthcare resource utilization was similar among the three groups. Conclusion Our national study on COVID-19 hospitalizations indicates that patients with IBD have comparable rates of gastrointestinal bleeding, pulmonary embolism, and mortality as those without IBD. However, patients with UC hospitalized with COVID-19 have a higher risk of deep vein thrombosis than COVID-19 patients hospitalized without UC. Further research is needed to better understand the relationship between COVID-19 and IBD.