Latent ischaemic heart disease among the male employees of an industrial enterprise.
Among 3758 men aged 40-50 years--employees of an industrial enterprise, 291 cases of suspected myocardial ischaemia (7.7%) were detected by means of resting ECG. Further 311 cases (8.3%) of latent ischaemic heart disease (IHD) were detected using a standard cardiovascular questionnaire, and 47 other men were positive both on resting ECG (ischaemic changes) and on the questionnaire. Latent IHD was equally frequent among blue and white collar workers. Ischaemic ECG findings were positively associated with a positive questionnaire, presence of hypertension, and hypertension or stroke in family history, and inversely with the alcohol consumption. No relation was found between ischaemic ECG and smoking, hypercholesterolaemia, obesity, education, and physical activity at work or during leisure time. Positive questionnaire data correlated with hypercholesterolaemia; unexpectedly this correlation was closer among non-smokers and moderate smokers than among heavy smokers.
D000328:Adult; D003327:Coronary Disease / Q000175:diagnosis* / Q000453:epidemiology; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D009790:Occupations; D012306:Risk