Seasonal variations in the incidence of acute myocardial infarction in Stockholm.
The aim of the present paper was to ascertain whether or not there is a seasonal trend in the incidence of acute myocardial infarction (AMI) in Stockholm. The material consisted of hospitalized patients with a diagnosis of AMI, recorded in a medical information system, and of deaths recorded in the cause-of-death register. The hospital stays and the deaths together totalled 4020 cases of AMI occurring in 1973. In contrast to the results of other studies, no seasonal trend was found.
D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology* / Q000401:mortality; D012621:Seasons; D013548:Sweden