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The Mamprobi Survey--a screening survey for cardiovascular disease and risk factors in Africa: methodology and validity.

The Mamprobi Survey is a cardiovascular disease prevalence sample survey in an African community in Ghana. This preliminary paper describes its methodology and validity. Response rate corrected for migration from the area was 73%. Subsequent sampling of non-respondents revealed only trivial reasons for non-attendance and only minor differences in health status, suggesting that estimates of disease prevalence by the survey were likely to be accurate.