Risk of SCD is related to clinical manifestations of CHD

During a 38-year follow-up of subjects in the Framingham Heart Study, the annual incidence of sudden cardiac death (SCD) in both men and women was related to the clinical manifestations of coronary heart disease (CHD). It was highest in those with a myocardial infarction, intermediate in those with angina and no prior infarction, and lowest in those without overt CHD.