降圧剤治療を受けている50歳代男性労働者における脳心事故の危険因子

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The relationship between cerebro-cardiovascular events (CCE) and work-related factors was examined in a cohort of 899 treated hypertensive men who were aged 50-59 yr and working more than 7 portal to portal hours (PPH). During the follow-up of 2.8 yr (2,513 person-years), 27 cases of CCEs occurred, which were classified into 18 cases of stroke, 7 cases of acute myocardial infarction, and 2 cases of others. Using univariate analysis, it was found that managerial position and long PPH (more than 11 h) were significantly related to CCE (relative risk of 3.0 and 2.2, respectively) as well as risk factors such as emaciation, left ventricular hypertrophy, excessive sleeping hours, obesity, cigarette smoking, and inadequate control of systolic blood pressure. Using Cox proportional hazards general model, both managerial position and long PPH remained independently related to the risk of CCE (hazards ratio and 95% confidence interval, 4.1; 1.7-10.0 and 2.7; 1.1-6.2, respectively), after adjustment for other risk factors. These findings suggested that work-related factors, such as managerial position and long PPH, are independent risk factors of CCE among treated hypertensive male workers in the fifth decade.
1992-07-20