Racial disparity in quality of PCI hospital observed among Medicare beneficiaries
Popescu I. Circulation. 2011;doi:10.1161/circulationaha.110.973628.
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Researchers of a study appearing in Circulation have found that black Medicare beneficiaries are significantly less likely to undergo percutaneous coronary intervention in high-quality and revascularization hospitals compared with white beneficiaries.
The California and Iowa-based researchers performing the analysis pooled data from 1,244 US hospitals that had at least 50 black admissions in 2005. The 65,633 patients included in the study were either black (n=8,291) or white (n=57,342) and all had acute MI. Hospital quality was determined by a composite score composed of hospital risk-adjusted 30-day mortality and acute MI performance measures, with the top 20% designating high quality and the lowest 20% representing low quality.
Overall, blacks lived closer to revascularization (3.8 vs. 6.8 miles), high-quality (5.6 vs. 9.7 miles) and low-quality hospitals (25.5 vs. 36.9 miles; P<.001 for all three). After adjustment for distance, blacks had a significantly lower likelihood of being admitted to revascularization (RR=0.87) and high-quality hospitals (RR=0.88) while also having a higher likelihood of being admitted to low-quality hospitals (RR=1.17; P<.001 for all three).
Despite the study having several limitations, including lack of data on patient preferences and the inclusion of only white and black Medicare beneficiaries, the researchers wrote that the findings provide important information on factors contributing to racial disparities in acute MI treatment.
“The study confirms the role of differential access to hospitals with revascularization services and high quality of care as a plausible source of disparity,” they said. “However, racial differences in access to high-quality hospitals appear to be primarily driven not by race in itself, but by differences in where the majority of blacks and whites live and seek care. Effective policy recommendations aimed at reducing disparities need to take local socioeconomic and health care system factors into consideration.”
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