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Intensive end-of-life (EOL) care is emotionally and financially burdensome, disproportionally negatively impacting racial and ethnic minorities, rural residents, and lower socioeconomic seniors.

To evaluate the impact of race, ethnicity, and rural residency on EOL Intensive Care Unit (ICU) stays, emergency department (ED) visits, 30-day readmissions, and Advanced Care Planning (ACP) in Colorado residents when controlling for comorbidities.

This retrospective cohort study analyzed data from the Colorado All-Payer Claims Database for 92,975 severely or chronically ill individuals (2018-2021). It used logistic regression models to evaluate associations between demographic variables and EOL health care utilization outcomes.

ICU Stays: Hispanic/Latino, Asian, and Black members had increased ICU stays compared to Whites (Adj. OR: 1.24;1.34;1.28: 95% CI). However, members without ACP and rural residents had lower ICU stays (Adj. OR: 0.67; 0.89: 95% CI). ED Visits: Hispanic/Latino, Asian, Black members, non-dually eligible members (Medicare Fee for Service (MFFS) + Medicaid), and rural residents had increased ED visits (Adj. OR: 1.29; 1.39; 1.19; 1.17; 2.04: 95% CI). Meanwhile, members without ACP or hospice care had lower ED visits (Adj. OR: 0.70; 0.75: 95% CI). 30-day Readmissions: Asian members and rural residents had increased 30-day readmissions (Adjusted OR: 2.42; 1.06: 95% CI). In contrast, those on MFFS and not on Medicaid, members without ACP, and those not in hospice care had decreased 30-day readmissions (Adj. OR: 0.69; 0.47; 0.83: 95% CI).

EOL racial, geographic, and socioeconomic disparities exist in Colorado, requiring urgent interventions for a more equitable health care system.