Study sheds light on differences in hospitalization-related care and outcomes for urgent cardiovascular conditions among homeless individuals

Lindsey Diaz-MacInnis (BIDMC Communications) 617-667-7372, ldiaz2@bidmc.harvard.edu

NOVEMBER 18, 2019

Homeless adults are substantially less likely to undergo potentially life-saving procedures for emergent cardiovascular conditions

Boston, Mass. – Cardiovascular disease is a major cause of death among homeless adults, with mortality rates that are substantially higher than the general population. However, little is known about whether there are differences in care between homeless and non-homeless adults and whether any such differences contribute to disparities in cardiovascular outcomes. Understanding these patterns is critically important from a public health perspective, particularly given the growing homeless population in the United States and rising rates of acute hospitalization among homeless adults.

In a new retrospective study published today in JAMA Internal Medicine, a team of researchers led by Rishi Wadhera, MD, MPP, MPhil, an investigator in the Smith Center for Outcomes Research in Cardiology at Beth Israel Deaconess Medical Center (BIDMC), found that there are indeed striking disparities in in-hospital care and mortality between homeless and non-homeless adults. The study found homeless adults were significantly less likely to receive important diagnostic or therapeutic procedures for urgent cardiovascular conditions and generally had higher in-hospital death rates compared with non-homeless adults.

“Our findings illustrate an urgent need for public health and policy efforts to support safety-net hospitals and other hospitals that care for high numbers of homeless individuals, in order to reduce disparities in hospital-based care and improve health outcomes for this vulnerable population,” said Wadhera.

Wadhera and colleagues evaluated whether there were differences in intensity of care (e.g. diagnostic or therapeutic procedures) and death rates among homeless and non-homeless adults hospitalized for urgent cardiovascular conditions, including heart attack, stroke, cardiac arrest and heart failure. Using the State Inpatient Databases of the Healthcare Cost and Utilization Project, they analyzed more than 1.8 million hospitalizations across 525 hospitals between 2010 and 2015, focusing on three states with large homeless populations – Massachusetts, Florida, and New York.

Wadhera and team found that only 55 percent of homeless patients hospitalized for a very dangerous type of heart attack, ST-elevation myocardial infarction, underwent percutaneous coronary intervention to treat this condition. In contrast, 76 percent of non-homeless adults with the same type of heart attack received this procedure. Similarly, homeless individuals hospitalized for cardiac arrest or stroke also received lower intensity procedural care and experienced higher mortality rates compared to their non-homeless counterparts.

For example, in the cardiac arrest cohort, homeless adults were 7.5 percent less likely to undergo coronary angiography and 4.7 percent less likely to undergo percutaneous coronary intervention, compared to non-homeless adults. Among adults hospitalized with stroke, homeless individuals were 6 percent less likely to undergo cerebral angiography than non-homeless individuals. Similarly, mortality rates among homeless persons hospitalized with stroke and cardiac arrest were 2.6 percent and 18.7 percent higher, respectively, than non-homeless individuals.

“One important finding from our study was that even in the same hospital, homeless patients seem to be clinically treated differently than non-homeless patients,” said Wadhera. “For example, we found that among adults hospitalized for a heart attack, homeless individuals were less likely to receive a coronary angiography and percutaneous coronary intervention, than non-homeless adults hospitalized for a heart attack at the same site of care. Further work is needed to understand whether implicit biases or stigma influence how clinicians deliver care to homeless patients or whether there are clinical reasons behind these differences in care.”

In addition to Wadhera, co-authors include Eunjee Choi, PhD, Ginger Jiang, MD, Changyu Shen, PhD, and Robert W. Yeh, MD, MSc, of BIDMC; Sameed Ahmed M. Khatana, MD, MPH, of the University of Pennsylvania; and Karen E. Joynt Maddox, MD, MPH, of Washington University School of Medicine.

Yeh receives research support from the National Heart, Lung and Blood Institute (R01HL136708) and the Richard A and Susan F Smith Center for Outcomes Research in Cardiology at BIDMC. Maddox receives research support from the National Heart, Lung, and Blood Institute (R01HL143421), the National Institute on Aging (R01AG060935), and Commonwealth Fund. The other authors report no conflicts of interest.

About Beth Israel Deaconess Medical Center

Beth Israel Deaconess Medical Center is a patient care, teaching and research affiliate of Harvard Medical School and consistently ranks as a national leader among independent hospitals in National Institutes of Health funding.

BIDMC is in the community with Beth Israel Deaconess Hospital-Milton, Beth Israel Deaconess Hospital-Needham, Beth Israel Deaconess Hospital-Plymouth, Anna Jaques Hospital, Cambridge Health Alliance, Lawrence General Hospital, Signature Healthcare, Beth Israel Deaconess HealthCare, Community Care Alliance and Atrius Health. BIDMC is also clinically affiliated with the Joslin Diabetes Center and Hebrew Rehabilitation Center and is a research partner of Dana-Farber/Harvard Cancer Center and the Jackson Laboratory. BIDMC is the official hospital of the Boston Red Sox. For more information, visit www.bidmc.org.

BIDMC is part of Beth Israel Lahey Health, a new health care system that brings together academic medical centers and teaching hospitals, community and specialty hospitals, more than 4,000 physicians and 35,000 employees in a shared mission to expand access to great care and advance the science and practice of medicine through groundbreaking research and education.