The Charleston Heart Study was initiated in 1960. Randomly selected Black and white men and women 35 years of age and over were examined to obtain details concerning angina, myocardial infarction, hypertension, smoking, blood pressure, height, weight, and serum cholesterol levels. The total cohort was 2,283 persons. The last screening of the cohort was in 1974-1975 until the this study which started in 1984.