
The study analyzed the records of more than 91,000 people who suffered a heart attack in California between 2001 and 2011. They found that Black patients were 19 percent more likely to die within 90 days than White patients. And 16 percent of Black patients and only 10 percent of White patients received care at emergency rooms that were diverting patients due to overcrowded conditions.
Lead author of the study, Renee Hsia, professor of emergency medicine and health policy at the University of California, San Francisco, said that “these findings suggest that Black patients could be experiencing poorer quality care, delayed care or a combination of those factors. Efforts to increase quality of care and reduce emergency department crowding – specifically in these communities – may help close these disparities.”
The full study, “Impact Of Ambulance Diversion: Black Patients With Acute Myocardial Infarction Had Higher Mortality Than Whites,” was published in the journal Health Affairs. It may be accessed here.

