【摘要】 目的：进一步深入研究炼焦工职业性肺癌的发病规律，为防治提供科学依据。方法：对焦化厂和煤气厂工人进行长期追踪流调，观察职业性肺癌SMR值增长态势。结果：在25年间进行3次追踪流调，结果表明：SMR值随厂龄和工龄的增长而显著上升。结论：SMR值不是一个常数，而是一个变量．任何企业不能仅根据一次流调来评价职业性肺癌的危害性。更多还原

【Abstract】 Objective:In order to provide a scientific bases for prevention, the incidence regulality of occupational lung cancer among coking workers was further investigated. Methods: The continual epidemiological survey over a long period was studied among the workers in coking and gas plants, and the increased pattern of SMR value of occupational lung cancer was also observed.Results: The continual epidemiological survey have been completed for three tAnes in 25 years, the rusult showed that the SMR value significantly rise with the increase of plant ages and work ages.Conclusion: The SMR value isn’t the constant, but a variable. Any enterprise couldn’t evaluate the risk of occupational lung cancer only based on the result of epidemiological survey in one time.更多还原