ArticleBMJ open2025
Identifying racial inequalities in long-term outcomes among survivors of critical illness with sepsis in a US cohort: a retrospective cohort study.
Article in BMJ open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesRacial disparities in critical illness outcomes are well-described, with social determinants of health as likely contributors. We sought to identify inequalities in readmissions and mortality between black and white patients among survivors of critical illness with sepsis and assess whether these disparities were explained by neighbourhood characteristics, health insurance and hospital quality.
designRetrospective cohort study examining 90-day and 9-month readmissions and survival as coprimary outcomes. Models included age, sex, race and area deprivation index (ADI), Medicaid status or hospital Centers for Medicare & Medicaid Star rating. Accelerated failure time and Cox proportional hazards models with subgroup analyses by age and surgical status were employed.
setting14 community and tertiary hospitals in Western Pennsylvania.
participants48 027 survivors of sepsis with critical illness; 20 952 (50.4%) male; 6489 (13.5%) identified as black.
resultsBlack patients were younger (mean age 59.0 years vs 65.8 years), more likely to have higher ADI, Medicaid insurance and receive care at lower-quality hospitals. Black patients had higher readmission risk: (90-day subdistribution HR (SDHR) 1.13 (95% CI 1.04 to 1.23); p=0.003); 9-month SDHR: 1.11 (95% CI 1.03 to 1.20); p=0.005). Adjusting for age and sex, we found no difference in 90-day and 9-month mortality (90-day acceleration factor (AF): 1.04 (95% CI 0.91 to 1.19); p=0.556; 9-month: 1.08 (95% CI 0.96 to 1.22); p=0.196), which remained consistent when including ADI, Medicaid status or hospital quality. Mortality among black patients was increased relative to white patients among patients ≥60 years (9-month AF 1.23 (95% CI 1.07 to 1.42; p=0.004)) and among surgical patients (90-day AF: 1.23 (95% CI 1.01 to 1.50; p=0.04); 9-month AF: 1.28 (95% CI 1.07 to 1.53; p=0.006)). Medicaid status, but not ADI or hospital quality, attenuated racial differences in subgroup mortality.
conclusionsIn a retrospective analysis of intensive care unit (ICU) survivors with sepsis, black patients had higher readmission rates but comparable mortality to white patients, except among older and surgical subgroups. Medicaid status influenced racial inequalities in mortality, highlighting a need for targeted post-ICU interventions.
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