title: Prevalence of angina pectoris and myocardial infarction in a general population sample of Swedish men.
abstract: A primary preventive trial against cardiovascular diseases has been in progress since 1970 in Göteborg, Sweden. The study population comprises all men in the city born in 1915-22 and 1924-25, a total of about 30 000 men. One third of this population constitutes the intervention group. The prevalence of angina pectoris and myocardial infarction among men aged 47-53 years has been studied in this group. The cases were identified by means of a postal questionnaire, direct interview at screening examination and by clinical examination. A validation of the postal questionnaire technique gave a sensitivity of 74% and a specificity of 94%. The minimum prevalence of angina pectoris amounted to 4.3% and the prevalence of myocardial infarction to 1.6%. In the angina series, 22% had suffered a myocardial infarction that preceded angina pectoris in 9%.
mesh_terms: D000787:Angina Pectoris / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology* / Q000517:prevention & control; D013548:Sweden