title: [Dynamics of the incidence of myocardial infarct in Smolyan District 1965-1979].
abstract: The authors, on the base of a retrospective study on morbidity rate of myocardial infarction carried out in Smolyan district for the period 1965-1979, established a pronounced tendency to an increase number of the diseases in the district. The latter resulted from the effect of a complicated complex of social, economic and psychological factors. What is characteristic for the district is that the diseases number tends to increase during the winter and spring months. The circadian cyclic recurrence of the origination of the disease is manifested by a sharp increase of the cases during the night and early morning hours. The mass engagement of the women in the economic and public life led to an increased number of infarctions among them during the last six years of the observation period. With age advancement, the number of infarction rapidly grew, reaching the highest values among the age groups over 50.
mesh_terms: D000208:Acute Disease; D000328:Adult; D000367:Age Factors; D000368:Aged; D002031:Bulgaria; D002940:Circadian Rhythm; D003327:Coronary Disease / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology*; D012189:Retrospective Studies; D012306:Risk; D012621:Seasons; D012737:Sex Factors; D012959:Socioeconomic Factors
vernacular_title: Dinamika v razprostranenieto na infarkta na miokarda v Smolianski okrŭg za perioda 1965-1979 g.