Abstract 4138275: Demographic, Regional, and State-level Trends of Mortality in patients with Atrial fibrillation in the United States, 1999 to 2020

Background: There exists a paucity of data regarding mortality trends among individuals with atrial fibrillation (AF) based on age, gender, race and ethnicity, and geographic regions. Objective: To investigate the trends in mortality in the United States (US) associated with AF among individuals aged ≥45 years. Methods: We reviewed the death certificate data from the Centers for Disease Control and Prevention (CDC) Wide-ranging Online Data for Epidemiologic Research (WONDER) database to examine atrial fibrillation–related mortality trends from 1999 to 2020 in individuals ≥45 years of age. We calculated crude and age adjusted mortality rates (AAMRs) per 100 000 patients and annual percentage change (APC) with 95% CIs. Results: Between 1999 and 2020, 2,576,839 AF-related deaths were identified among US adults over 45 years of age. The age adjusted mortality rate (AAMR) for AF-related deaths rose significantly from 70.6 in 1999 to 149.1 in 2020. Initially, the AAMR remained stable from 1999 to 2009 (APC): 2.31; 95% CI: -0.57 to 5.84), then increased significantly from 2009 to 2018 (APC: 3.60; 95% CI: 2.12 to 4.75), and saw a sharp rise from 2018 to 2020 (APC: 8.46; 95% CI: 4.76 to 10.44). There were notable disparities among demographic groups. Men consistently had higher AAMRs than women from 1999 (men: 79.9, women: 64.4) to 2020 (men: 180.5, women: 125.3). Non-Hispanic (NH) White adults had the highest AAMR (108.6), followed by NH American Indian/Alaska Native (73.4), NH Black (66.7), Hispanic or Latino (55.5), and NH Asian or Pacific Islander adults (51.2). The age group 85+ consistently showed the highest mortality rates throughout the study period. Regional differences were also evident, with the residents of western region (109.5) and nonmetropolitan areas (109.6) having the higher AAMRs when compared to other regions (Midwest: 104.3, Northeast: 95.1, and South: 95.0) and metropolitan areas (98.3), respectively. State-level variations were also significant. Conclusion: Our study found a rise in AF-related mortality in the US from 1999 to 2020, with significant disparities among demographic and geographic subgroups. Higher AAMRs were noted in males, non-Hispanic Whites, adults over 85, and residents of the western and nonmetropolitan US. Addressing disparities in access to quality care, timely diagnosis, insurance maintenance, and implementing targeted health policies can help reduce AF-related mortality.