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调查汇明电筒厂铬电镀工人160名。队列观察期限从1940年1月1日起至1988年8月1日止,以该厂非接触者1112名为对照组。接触组发现因肺癌死亡13名,期望值3.0,SMR为433,P<0.01。用Poisson回归模型按年龄、接触、吸烟进行分层分析,发现因接触铬酸雾而致肺癌死亡的相对危险度为2.726,因吸烟而致肺癌死亡的相对危险度为15.425,P<0.01。结果提示接触铬酸雾可能致接触人群肺癌死亡增加。
Survey Huiming flashlight factory chromium plating 160 workers. The observation period of the cohort was from January 1, 1940 to August 1, 1988, with 1112 non-contact patients in the factory as the control group. Thirteen lung cancer deaths were found in the exposure group, with an expected value of 3.0 and an SMR of 433 (P <0.01). The Poisson regression model was stratified by age, exposure and smoking. The relative risk of death from lung cancer due to exposure to chromic acid mist was 2.726. The relative risk of death from lung cancer due to smoking was 15.425, P <0.01. The results suggest that contact with chromic acid fog may cause increased lung cancer deaths in contact with the population.