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Related Experiment Videos

Community-based intervention: the Coronary Risk Factor Study (CORIS)

J E Rossouw1, P L Jooste, D O Chalton

  • 1Research Institute for Nutritional Diseases, South African Medical Research Council, Parow.

International Journal of Epidemiology
|June 1, 1993
PubMed
Summary
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Community health programs effectively reduced coronary heart disease risk factors like blood pressure and smoking. Media-based interventions proved more cost-effective than those including interpersonal strategies.

Area of Science:

  • Cardiovascular Health
  • Public Health Interventions
  • Epidemiology

Background:

  • Coronary heart disease (CHD) poses a significant public health challenge.
  • Community-based interventions are explored to mitigate CHD risk factors.
  • The Coronary Risk Factor Study (CORIS) investigated multifactorial approaches.

Purpose of the Study:

  • To assess the feasibility and effectiveness of a community intervention program for reducing CHD risk factors.
  • To compare low-intensity (media-based) and high-intensity (media plus interpersonal) interventions.
  • To evaluate the cost-effectiveness of different intervention intensities.

Main Methods:

  • A 4-year intervention study in three Afrikaner communities.
  • Two communities received interventions (low-intensity media or high-intensity media plus interpersonal).

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  • One community served as a control, with pre- and post-intervention surveys.

    • Main Results:

    • Significant reductions in blood pressure, smoking, and overall risk scores were observed in both intervention groups compared to the control.
    • Total cholesterol showed a decline but without a significant net reduction favoring intervention.
    • High-density lipoprotein cholesterol (HDL-C) and HDL-C/TC ratios significantly increased in intervention communities.

    Conclusions:

    • Community-based interventions are effective in reducing CHD risk factors.
    • Media-based health education (low-intensity intervention) demonstrated comparable effectiveness to high-intensity interventions.
    • Media-based programs were more cost-effective in these communities.