The main objectives of the Swiss National Research Program on primary prevention of cardiovascular diseases are: 1) the reduction of known cardiovascular risk factors among the local populations of two intervention Communities compared to two "regular care" communities and 2) the provision of tested cost-effective methods for nation-wide use in the future control of CVD. The main focus during both the screening and the three years intervention phase will be on the total mobilization of community resources to induce behavior change (active participation of the population as well as the local health and social services system both in planning and implementation). A program such as this has to meet the challenge of developing a design that combines the needs for rigorous evaluation with a maximal amount of flexibility regarding the results of local initiative and involvement.
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