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Blood Pressure and Hypertensive Disease Among Negroes and Whites
A Study in Evans County, Georgia
- J. R. MCDONOUGH, M.D., M.P.H.;
- G. E. GARRISON, M.D.; and
- C. G. HAMES, M.D.
- Requests for reprints should be addressed to J. R. McDonough, M.D., Heart Disease Control Program, U. S. Public Health Service, Washington, D. C.
Excerpt
Higher blood pressure values of Negroes than whites living in or near the United States have been reported from several population studies (1-6). Two studies on blood pressure levels among Navajo Indians living in the southwestern United States have found a virtual absence of elevated blood pressure (7, 8). Another study on blood pressure among the Apache Indians suggests higher blood pressures in this tribe than among the Navajo (9). Despite these racial differences in blood pressure, the studies conducted to date have all been descriptive, and the reasons for the differences remain unknown.
An excess mortality attributed to cardiovascular
Acknowledgment
The authors wish to acknowledge the assistance of the following persons:
Evans County, Georgia. Dr. Charles Brown, District 7 health officer; Fae Bowen, laboratory technician; Melrose Calloway, field operator; Mattie Lou Daniel, nurse; Dr. Louis Griffin, medical practitioner; Lillian Lewis, secretary; Hubert Manning, laboratory technician and supervisor; Harold Smith, laboratory director; and Vera Smith, nurse.
Georgia Department of Public Health. Dr. J. Gordon Barrow, Chief, Cardiovascular Disease Control Service; and Dr. John Venable, Director.
Public Health Service. Dr. R. C. Arnold, former Chief, Heart Disease Control Program; Dr. Dave Brand, Chief, Heart Disease Control Program; Dr. Robert Hansen, chronic diseases consultant, Region IV; Miss Edith Jungblut, statistician; Mr. Scott Mahan, statistical clerk; Dr. Arthur Rikli, former Chief, Heart Disease Control Program; and Sarah Stulb, project nutritionist.
University of North Carolina. Dr. John Cassel, Professor of Epidemiology; Dr. B. G. Greenberg, Professor of Biostatistics; Jo Maready, Research Associate in Epidemiology; Dr. H. A. Tyroler, Associate Professor of Epidemiology; and Katie Yelverton, Research Associate in Biostatistics.
Summario in Interlingua
Un studio epidemiologic del tension de sanguine e de morbo hypertensive esseva executate in le population del contato Evans in le stato Georgia durante le periodo ab 1960 ad 1962. Le population studiate—identificate per le census —consisteva del segmento in le gruppo de etates ab 40 ad 74 annos e de un specimen aleatori de 50 pro cento del segmento del gruppo de etates ab 15 ad 39 annos. Isto rendeva eligibile 3377 personas del quales 3102 (i.e., 92 pro cento) esseva de facto examinate. Approximativemente 38 pro cento del population studiate esseva negros.
Esseva trovate que negros habeva plus alte tensiones sanguinee tanto systolic como etiam diastolic que blancos in omne gruppos de etate e in ambe sexos. Le differentias esseva marcate e altemente significative. Le proportiones de prevalentia del complicationes de hypertension de typo a specificitate per etates—incluse hypertrophia sinistro-ventricular, allargamento cardiac, proteinuria, e anormalitates del fundo ocular etiam se provava plus alte inter le negros que inter le blancos. Esseva trovate que un sol determination routinari del tension de sanguine es valide como indice del prevalentia de morbo hypertensive in iste population.
Differentias in le tractamento de hypertension, in classe social, in occupation, in circumferentia del bracio, o in peso corporee non sufficeva a explicar le differentia in hypertension inter le duo racias. Impressiones preliminari etiam suggere que differentias in le ingestion de natrium non explica le differentias del tension de sanguine inter negros e blancos.
Un explication tentative del observate differentia racial in tension de sanguine stipula hereditage a base de un sol hypertensive gen. Isto remane un hypotho se e debe esser testate in studios futur, sed le datos del presente investigation provide un certe evidentia in supporto de illo.
Article and Author Information
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This work was supported by grant H-3341 United States Public Health Service, Bethesda, Maryland and a contract from the Georgia State Health Department Cardiovascular Disease Control Service and the Heart Disease Control Program of the United States Public Health Service.
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- Received January 15, 1964.
- Accepted February 25, 1964.
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