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本文作者研究了职业性接触CO所产生的危害。以往基本上只对在职工人进行发病率的横断面调查。但这会漏掉一些因健康受损而离职的工人,因而就低估了有害物质的危险性。为了避免这种不足,作者在美国新泽西州对汽车检查员进行了历史性前瞻队列死亡率研究。所选对象是1944.1～1973.8.31期间从事汽车检查工作六个月以上的白种男性工人。符合上述条件的有1,558名,其中工龄5年以上者为60%(913名),20年以上者为21%(324名),不足一年而大于6个月者仅有2.1%。大约占总数63%的工人在1957年前开始工作。通过测定,CO平均接触浓度为10～24.4ppm(时间加权浓度-TWA),虽然低于美国职
The authors studied the hazards of occupational exposure to CO. In the past, only cross-sectional surveys on the incidence of workers were conducted. However, this would miss some workers who left their jobs because of their health problems and thus underestimated the danger of harmful substances. To avoid this deficiency, the authors conducted a historic prospective cohort study of car inspectors in New Jersey, USA. The selected object is from 1944.1 to 1973.8.31 during the car inspection work for more than six months of white male workers. 1,558, of whom 60% (913) were working for more than 5 years and 21% (324) for more than 20 years. Only 2.1% of those who were less than one year and were more than 6 months old met the above criteria. About 63% of the total workers started their work before 1957. Through the measurement, the average contact concentration of CO is 10 ~ 24.4ppm (time weighted concentration - TWA), although lower than the United States