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Original Article
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Volume 329:600-606 August 26, 1993 Number 9
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Racial Differences in the Incidence of Cardiac Arrest and Subsequent Survival
Lance B. Becker, Ben H. Han, Peter M. Meyer, Fred A. Wright, Karin V. Rhodes, David W. Smith, John Barrett, for The CPR Chicago Project

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ABSTRACT

Background Differences between blacks and whites have been reported in the incidence of several forms of cardiovascular disease, including hypertension and stroke. We examined racial differences in the incidence of cardiac arrest in a large urban population and in subsequent survival.

Methods We collected data on all nontraumatic, out-of-hospital cardiac arrests in Chicago from January 1, 1987, through December 31, 1988, and compared the incidence and survival rates for blacks and whites. We examined the association between survival and race and seven other known risk factors by logistic-regression analysis. We computed incidence rates by coupling our data with U.S. Census population data.

Results Our study population comprised 6451 patients: 3207 whites, 2910 blacks, and 334 persons of other races. The incidence of cardiac arrest was significantly higher for blacks than for whites in every age group. The survival rate after cardiac arrest was 2.6 percent in whites, as compared with 0.8 percent in blacks (P<0.001). Blacks were significantly less likely to have a witnessed cardiac arrest, bystander-initiated cardiopulmonary resuscitation, or a "favorable" initial rhythm or to be admitted to the hospital. When they were admitted, blacks were half as likely to survive. The association between race and survival persisted even when other recognized risk factors were taken into account. We did not find important differences between blacks and whites in the response times of the emergency medical services.

Conclusions The black community in our study was at higher risk for cardiac arrest and subsequent death than the white community, even after we controlled for other variables.


Source Information

From the Section of Emergency Medicine, Department of Medicine (L.B.B., B.H.H.), and the Department of Statistics (F.A.W.), University of Chicago, Chicago; the Department of Preventive Medicine, Rush-Presbyterian-St. Luke's Medical Center, Chicago (P.M.M.); the Emergency Department, Resurrection Hospital, Chicago (K.V.R.); the Department of Epidemiology and Statistics, University of Oklahoma, Oklahoma City (D.W.S.); and the Bureau of Emergency Medical Services, Chicago Fire Department, Chicago (J.B.).

Address reprint requests to Dr. Becker at MC 5068, 5841 S. Maryland Ave., University of Chicago Hospitals, Chicago, IL 60637.

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Related Letters:

Heart Disease and Race
Lai S., Page J. B., Rodney E., Vasavada B. C., Sacchi T. J., Platt F. W., Becker L. B., Meyer P. M., Whittle J., Conigliaro J., Good C.B.
Extract | Full Text  
N Engl J Med 1994; 330:216-218, Jan 20, 1994. Correspondence

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