Working hours are associated with acute myocardial infarction in Japan

Extremely long working hours are suspected of increasing the risk of sudden death from too much occupational stress. Few studies, however, have examined whether long working hours and a change in working hours influence the risk of acute myocardial infarction. In their case-control study Sokejima and Kagamimori (p 775) found a U shaped association between mean monthly working hours and the risk of acute myocardial infarction. In addition, there seemed to be a trend for the risk to increase with greater increases in working hours. Further study is necessary to clarify the mechanism for the U shaped association and its influence on the low morbidity and mortality from acute myocardial infarction in Japan.


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Related Article

Working hours as a risk factor for acute myocardial infarction in Japan: case-control study
Shigeru Sokejima and Sadanobu Kagamimori
BMJ 1998 317: 775-780. [Abstract] [Full Text] [PDF]




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