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本文用回顾性队列方法在大连化学工业公司接触二氧化硫(SO_2)的699名工人,氮氧化物(NOx)的378名工人在1971—1985年间的死亡情况进行了分析。分别用当地城市居民同期年龄别死亡率做标准死亡率及不接触毒物的两个轧钢厂工人同期死亡率做队
In this paper, a retrospective cohort study was conducted on the deaths of 699 workers exposed to sulfur dioxide (SO_2) from Dalian Chemical Industry Company and 378 workers suffering from nitrogen oxides (NOx) from 1971 to 1985. Respectively, with the local urban residents at the same age mortality rate as standard mortality and non-contact poisoning of two rolling mill workers in the same period of team death rate