TY - JOUR AU - M. M. Montoya AU - J. C. Gander AU - S. F. Suglia AU - B. McDonald AU - S. A. Patel AU - T. Davis AU - R. E. Patzer AU - R. Jagannathan AU - L. Teunis AU - J. L. Harding A1 - AB - BACKGROUND: Racial and ethnic minorities have experienced a disproportionate burden of severe COVID-19. Whether chronic stress, also disproportionately experienced by racial and ethnic minorities, explains this excess risk is unknown. METHODS: We identified 9577 adults (≥ 18 years) diagnosed with COVID-19 from January 1, 2020, through September 30, 2021, enrolled in Kaiser Permanente Georgia (KPGA) with complete biomarker data. Self-reported race (Black or White) was defined from electronic medical records. Chronic stress, defined as allostatic load (AL), a composite score (scale 0-7) based on seven cardio-metabolic biomarkers, was categorized as below (low AL) or above (high AL) the median. Severe COVID-19 was defined as hospitalization or mortality within 30 days of COVID-19 diagnosis. The association between race, AL, and severe COVID-19 was assessed using multivariable Poisson regression. The mediating effect of AL was assessed using the Valeri and VanderWeele method. All results were expressed as risk ratios (RRs) with 95% confidence intervals. RESULTS: Overall, Black (vs. White) KPGA members had an 18% excess risk of AL (RR: 1.18, 95%CI: 1.14-1.23) and a 24% excess risk of severe COVID-19 (RR: 1.24, 95%CI: 1.12, 1.37). AL explained 23% of the Black-White disparities in severe COVID-19. CONCLUSIONS: In our study, chronic stress, characterized by AL, partially mediated Black-White disparities in severe COVID-19 outcomes. AD - Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.; Department of Surgery, Emory University School of Medicine, Atlanta, GA, USA.; Center for Research and Evaluation, Kaiser Permanente Georgia, Atlanta, GA, USA.; Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA.; Regenstrief Institute, Indianapolis, IN, USA.; Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA. jessica.harding@emory.edu.; Department of Surgery, Emory University School of Medicine, Atlanta, GA, USA. jessica.harding@emory.edu. AN - 38294635 BT - J Racial Ethn Health Disparities C5 - Healthcare Disparities CP - 2 DA - Apr DO - 10.1007/s40615-024-01920-6 DP - NLM ET - 20240131 IS - 2 JF - J Racial Ethn Health Disparities LA - eng N2 - BACKGROUND: Racial and ethnic minorities have experienced a disproportionate burden of severe COVID-19. Whether chronic stress, also disproportionately experienced by racial and ethnic minorities, explains this excess risk is unknown. METHODS: We identified 9577 adults (≥ 18 years) diagnosed with COVID-19 from January 1, 2020, through September 30, 2021, enrolled in Kaiser Permanente Georgia (KPGA) with complete biomarker data. Self-reported race (Black or White) was defined from electronic medical records. Chronic stress, defined as allostatic load (AL), a composite score (scale 0-7) based on seven cardio-metabolic biomarkers, was categorized as below (low AL) or above (high AL) the median. Severe COVID-19 was defined as hospitalization or mortality within 30 days of COVID-19 diagnosis. The association between race, AL, and severe COVID-19 was assessed using multivariable Poisson regression. The mediating effect of AL was assessed using the Valeri and VanderWeele method. All results were expressed as risk ratios (RRs) with 95% confidence intervals. RESULTS: Overall, Black (vs. White) KPGA members had an 18% excess risk of AL (RR: 1.18, 95%CI: 1.14-1.23) and a 24% excess risk of severe COVID-19 (RR: 1.24, 95%CI: 1.12, 1.37). AL explained 23% of the Black-White disparities in severe COVID-19. CONCLUSIONS: In our study, chronic stress, characterized by AL, partially mediated Black-White disparities in severe COVID-19 outcomes. PY - 2025 SN - 2196-8837 SP - 810 EP - 818+ ST - Racial Disparities in COVID-19 Severity Are Partially Mediated by Chronic Stress-Evidence from a Large Integrated Healthcare System T1 - Racial Disparities in COVID-19 Severity Are Partially Mediated by Chronic Stress-Evidence from a Large Integrated Healthcare System T2 - J Racial Ethn Health Disparities TI - Racial Disparities in COVID-19 Severity Are Partially Mediated by Chronic Stress-Evidence from a Large Integrated Healthcare System U1 - Healthcare Disparities U3 - 10.1007/s40615-024-01920-6 VL - 12 VO - 2196-8837 Y1 - 2025 ER -