{'fraction_non_alphanumeric': 0.02959183673469388, 'fraction_numerical': 0.017346938775510204, 'mean_word_length': 5.169811320754717, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Population participation in the epidemiological study of the incidence of dyslipoproteinemias and ischemic heart disease among men aged 40-59 in Leningrad].

The authors investigated a group of people (1093 persons) who did not take part in the epidemiological survey of the population carried out in Leningrad to determine dysproteinemia and ischemic heart disease (IHD) prevalence. It was found that in the "nonparticipating" group 73.4% of persons refused to undergo the examination. The per cent of "refusals" was lowest in the groups of occupations mainly engaged in mental work and highest in the group of industrial occupations with poorly mechanized labor. Individuals who refused to be examined were insufficiently informed about their health, particularly about the presence of IHD and arterial hypertension. Most of them receive medical aid at the out-patient clinic at the place of residence (70.0%) and see no advantages of the suggested medical examination (61.0%).