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

Authors:
  • MNM D Nefzger
    M D Nefzger
  • LKL H Kuller
    L H Kuller
  • ALA M Lilienfeld
    A M Lilienfeld
  • EDE L Diamond
    E L Diamond
  • GMG D Miller
    G D Miller
  • PSP D Stolley
    P D Stolley
  • STS Tonascia
    S Tonascia
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Abstract
An epidemiological study was conducted to determine the geographical variations in stroke mortality among 3 USA 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 3 cities the response rate in the final sample selected was 90% (2375 individuals) interviewed and 74% (1939 individuals) examined.

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