Abstract 4125533: Demographic Trends and Disparities in Mortality Related to Coexisting Heart Failure and Diabetes Mellitus Among Older Adults in the United States: A Large Database Analysis from 1999 to 2020

Background: In the United States, over 38 million people have diabetes mellitus (DM) and more than 6 million have heart failure (HF). DM and HF often coexist, and each condition independently increases the likelihood of developing the other. Approximately 40% of individuals with HF also have DM, and this prevalence is even higher among older adults and hospitalized patients. While there has been concern regarding the increasing burden of disease for both conditions individually over the last decade, a comprehensive examination of mortality trends associated with their coexistence has not been thoroughly explored. Methods: This study analyzed death certificates from the CDC WONDER database, specifically focusing on mortality caused by the simultaneous presence of HF and DM among individuals aged 75 years and older. The data covers the period from 1999 to 2020. Age-adjusted mortality rates (AAMRs) per 100,000 individuals and annual percent change (APC) were computed and categorized based on year, gender, and race/ethnicity. Results: Between 1999 and 2020, a total of 663,016 deaths were reported in patients with coexisting HF and DM. Overall, AAMR increased from 154.1 to 186.1 per 100,000 population between 1999 and 2020, with an initial increase from 1999 to 2005 (APC: 0.80; 95% CI: -0.17 to 2.94), a significant decline from 2005 to 2011 (APC: -2.82; 95% confidence interval (CI): -5.47 to – 1.71), a subsequent increase from 2011 to 2018 (APC: 0.61; 95% CI: -0.59 to 2.18), and finally a steep increase from 2018 to 2020 (APC: 11.30; 95% CI: 6.98 to 14.11). Gender-based analysis revealed that older men had consistently higher AAMRs than older women (Men: 185; 95% CI: 184.3 to 185.6; vs Women: 135.4; 95% CI: 135 to 135.8). Furthermore, we found that AAMRs were the highest among non-Hispanic American Indian or Alaska natives (214.4; 95% CI: 207.5 to 221.4) followed by non-Hispanic African Americans (179.9; 95% CI: 178.5 to 181.4), Hispanics (159.5; 95% CI: 158 to 161.1), non-Hispanic White (152.9; 95% CI: 152.5 to 153.3), and non-Hispanic Asian or Pacific Islander populations (104.1; 95% CI 102.4 to 105.8) (Figure 1). Conclusion: The mortality rate due to coexisting HF and DM has increased in the elderly population over the past decade. Males and non-Hispanic American Indians or Alaskan Natives had the highest AAMRs in our study.