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[The incidence of ischemic heart disease and its risk factors in 20- to 54-year-old male workers in physical and intellectual jobs].

The low incidence of coronary heart disease (CHD) was established in the course of a one-stage epidemiological examination of 2562 men aged 20-54 years (a random sample from an open city population). It was found to be associated with an insignificant prevalence of lipid metabolism abnormalities (excluding hypoalphacholesterolemia) and did not depend on the nature of labour (4.3% among white collars and 4.4% among blue collars). The incidence of overweight and high AP turned out approximately identical, whereas tobacco-smoking, hypercholesterolemia and hypertriglyceridemia were mostly recorded in blue collars. The prevalence of CHD and its risk factors increased with age, excluding tobacco-smoking. In the latter case, it reduced with age.