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Stroke, Vol 8, 546-550, Copyright © 1977 by American Heart Association

ARTICLES

Three-area epidemiological study of geographic differences in stroke mortality. I. Background and methods

MD Nefzger, LH Kuller, AM Lilienfeld, EL Diamond, GD Miller, PD Stolley and S Tonascia

An epidemiological study was conducted to determine the geographical variations in stroke mortality among three U.S. areas. They were Savannah, Georgia (high stroke rates), Hagerstown, Maryland (intermediate stroke rates) and Pueblo, Colorado (low stroke rates). In each area samples were drawn of the population in the 35--54 age group. The subjects were interviewed and examined to obtain the information required on medical conditions and/or living habits which would characterize each area. A brief medical and family history, as well as demographic and personal data, were obtained by interview. The medical examination included blood pressure, ECG, blood and urine chemistry, height and weight. In all three cities the response rate in the final sample selected was 90% (2,375 individuals) interviewed and 74% (1.939 individuals) examined.