Trends in Mortality Due to Inflammatory Bowel Disease in the United States: A CDC WONDER Database Analysis (1999-2020)

Introduction: Inflammatory bowel disease (IBD) is a global health issue profoundly impacting quality of life. The United States accounts for nearly a quarter of the world's IBD patients, with the highest prevalence rates. This study aims to identify the demographic and regional trends of IBD-related mortality in the U.S. from 1999 to 2020.

Methodology: Our study utilized the CDC Wonder database to gather mortality data for IBD (Crohn's disease and ulcerative colitis) from 1999 to 2020. Results were presented as age-adjusted mortality rates (AAMR) per 100,000 population, with Joinpoint regression used to analyze trend changes and calculate annual percentage change (APC).

Results: A total of 62,310 IBD-related deaths were recorded. From 1999 to 2020, AAMR for Crohn's disease increased from 0.79 to 0.97, declining from 1999 to 2018 (APC: - 0.22) but surging from 2018 onwards (APC: 11.26). Women had a higher AAMR (0.81) compared to men (0.77). The highest rates were among non-Hispanic whites (0.86), followed by non-Hispanic blacks (0.48) and Hispanics (0.21). AAMR varied by state, ranging from 0.29 in Hawaii to 1.42 in Vermont. For ulcerative colitis, AAMR rose from 0.56 in 1999 to 0.63 in 2020, following a similar trend: a decline from 1999 to 2018 (APC: - 0.37) followed by an increase (APC: 12.21). State-specific AAMR ranged from 0.14 in Hawaii to 0.67 in Oregon.

Conclusion: This study highlights a decrease in AAMR for both diseases from 1999 to 2018, followed by significant increases from 2018 to 2020, indicating a need for targeted interventions.