Background Racial and ethnic minorities generally receive fewer medical interventions than Whites, but racial and ethnic patterns in Medicare expenditures and interventions may be quite different at life's end. Methods Based on a random, stratified sample of Medicare decedents (n=158,780) in 2001, we used regression to relate differences in age, sex, cause of death, total morbidity burden, geography, life-sustaining interventions (e.g., ventilators), and hospice to racial/ethnic differences in Medicare expenditures in the last 6 months of life. Results In the final 6 months of life, costs for Whites average $20,166; Blacks, $26,704 (32% more); Hispanics, $31,702 (57% more). Similar differences exist within sexes, age groups, all causes of death, all sites of death, and within similar geographic areas. Differences in age, sex, cause of death, total morbidity burden, geography, socioeconomic status, and hospice account for 53% and 63% of the higher costs for Blacks and Hispanics respectively. While Whites use hospice most frequently (Whites 26%, Blacks 20%, and Hispanics 23%), this affects racial and ethnic differences in end-of-life expenditures only minimally. However, fully 85% of the observed higher costs for non-Whites are accounted for after additionally modeling their greater end-of-life use of the ICU and various intensive procedures (such as, gastrostomies, used by 10.5% of Blacks, 9.1% of Hispanics, 4.1% of Whites). Conclusions At life's end, Black and Hispanic decedents have substantially higher costs than Whites. Over half of this is related to geographic, socio-demographic and morbidity differences. Strikingly greater use of life-sustaining interventions accounts for most of the rest.
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