The pattern of the tuberculosis incidence in the residents of Ulyanovsk for the period from 1954 to 1987 and the ratio of the exudative and productive types of the tuberculosis process were investigated. In the pattern of the disease incidence observed by 1988 the patients with the exudative and productive types of the process amounted to 61.3 and 38.7 per cent, respectively. The first type was characterized by infiltrative forms (85 per cent) and the second type was characterized by focal forms (76.4 per cent). The differences in the character of the process led to rapid detection of patients with the first type process as well as to increasing numbers of persons with the second type process among the population which manifested itself during mass examinations in the increased proportion of the focal forms in the incidence of tuberculosis followed by their lower frequency.
The level of cholesterol and its distribution by the fractions of lipoproteins of different classes were studied in the dwellers of an industrial town. The persons living in the residential areas characterized by a high oxidative stress were observed to have higher blood cholesterol levels and dyslipoproteinemia.
The range of prevalence rates for borderline mental disorders is very wide: from 17 to 210 cases per 1000 population. Considerable differences are explained both by a problem of detection of such patients and by certain diagnostic difficulties. Most clinical notions concerning borderline states are insufficiently definite and this has considerable influence on the results of epidemiologic researches. Analysis of the frequency of clinical diagnoses in two Moscow primary care out-patient clinics showed considerable differences which has disappeared under ICD-10 diagnosis.