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本文用回顾性队列研究方法,对某页岩油炼厂6,285名男性职工的恶性肿瘤作了追访调查。结果表明:该厂恶性肿瘤死亡率明显升高,其危险度是全国的1.45倍(P<0.01),其中肺癌尤为突出,是全国的2.5倍(P<0.01)。其高发人群是接触组中的原油车间及检修车间工人,危险度是全国一般人群的3.5倍(P<0.01),且其死亡率随着工龄的增长而上升,显示其一定职业特征。
In this retrospective cohort study, a follow-up survey of malignant tumors in 6,285 male workers at a shale oil refinery was conducted. The results showed that the mortality rate of malignant tumor in this factory was significantly higher than that of the whole country, the risk was 1.45 times of that of the whole country (P <0.01), especially for lung cancer, which was 2.5 times of the national average (P <0.01). The high risk population was exposed crude oil workshop and workshop workers in the contact group, the risk is 3.5 times the national general population (P <0.01), and its mortality rate increases with the length of service, showing some of its occupational characteristics.