[Risk factors of ischemic heart disease in various occupational groups. II. Complex analysis of risk factors]. / Czynniki ryzyka choroby niedokrwiennej serca w róznych grupach zawodowych. II. Kompleksowa analiza czynników ryzyka.

Four hundred four men aged 30 to 59 years, belonging to one of 4 occupational groups were investigated in a standard clinical conditions. Two from those groups were characteristic for steel mill professions: 121 blast furnace workers; exerting strenuous physical effort and working in hot microclimate. 131 operators (the second group) performed work in comfort microclimate conditions not demanding much effort. The third group comprised 73 executives of industry. The fourth group consisted of 79 monks. For all subjects of investigations 8 selected risk factors of ischemic heart disease were evaluated. They included: age, sex, family history, habit of smoking, systolic blood pressure, fasting blood cholesterol level, obesity index and professional physical activity. The level of each risk factor had numerical value in a span from "0" to "8". The sum of all points was decisive to which of 3 groups of risk given man should be accounted. Those 3 groups were arbitrary divided into "low, intermediate and high risk". The highest risk was found for the executives group, and the lowest for blast furnace workers. From the risk factors under investigation highest overall influence on incidence of ischemic heart disease had habit of smoking and obesity. Described here point classification system seems to be very simple and useful for estimation of risk of ischemic heart disease in a given population.

[Risk of coronary heart disease in metallurgy employees in light of prospective examinations]. / Ryzyko choroby niedokrwiennej serca u hutników w swietle badania prospektywnego.

The group of physical workers of metallurgic plant (average period of employment was 12.4 +/- 6.4 years) consisting of 1100 men aged from 20 to 59 years, was underwent double medical examination in 5 years interval in standard clinical conditions. The 8 risk factors of coronary heart disease (CHD): aged, sex, family history, systolic blood pressure, cholesterol blood concentration, body weight, cigarette smoking and professional physical activity were analysed. Each factor was graded from "0" to "8" points. To evaluate individual risk of CHD all points were summed to give the total score. It was found, in both examinations, that most of examined persons showed an average risk of CHD. The second examination (5 years after the first) demonstrated an increase of percent the workers with higher risk of CHD. The smoking habit and overweight were the most important among risk factors in the population studied.