Overtime work, insufficient sleep, and risk of non-fatal acute myocardial infarction in Japanese men.
Article
Liu, Y, Tanaka, H, Fukuoka Heart Study Group. (2002). Overtime work, insufficient sleep, and risk of non-fatal acute myocardial infarction in Japanese men.
. Occupational and Environmental Medicine, 59(7), 447-451. 10.1136/oem.59.7.447
Liu, Y, Tanaka, H, Fukuoka Heart Study Group. (2002). Overtime work, insufficient sleep, and risk of non-fatal acute myocardial infarction in Japanese men.
. Occupational and Environmental Medicine, 59(7), 447-451. 10.1136/oem.59.7.447
OBJECTIVES: To examine the relation between working hours and hours of sleep and the risk of acute myocardial infarction (AMI), with special reference to the joint effect of these two factors. METHOD: Case-control study in Japan. Cases were 260 men aged 40-79 admitted to hospitals with AMI during 1996-8. Controls were 445 men free from AMI matched for age and residence who were recruited from the resident registers. Odds ratios of AMI relative to mean weekly working hours and daily hours of sleep in the past year or in the recent past were calculated. RESULTS: Weekly working hours were related to progressively increased odds ratios of AMI in the past year as well as in the past month, with a twofold increased risk for overtime work (weekly working hours >or=61) compared with working hours
