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癌症死亡率更新及增强塑料造船业中接触苯乙烯工人的暴露反应分析。

Cancer mortality update with an exposure response analysis among styrene-exposed workers in the reinforced plastics boatbuilding industry.

机构信息

National Institute for Occupational Safety and Health, Cincinnati, Ohio.

出版信息

Am J Ind Med. 2018 Jul;61(7):566-571. doi: 10.1002/ajim.22853. Epub 2018 Apr 11.

Abstract

BACKGROUND

There is sparse and inconsistent evidence of an association between styrene exposure and cancer.

METHODS

This study examines mortality patterns in a previously studied cohort of 5201 workers employed in two Washington boat-building facilities, extending follow-up 5 years. Standardized mortality ratios (SMR) were calculated using state rates as referent. Cox regression calculated rate ratios (RR) per year employed in styrene-exposed exposed jobs.

RESULTS

No excess deaths from lymphohematopoietic cancers (LHCs) were observed (SMR: 0.99, 95%CI: 0.74-1.30) when compared to the referent population; however, the relative risk increased with duration of employment in internal analyses. Conversely, lung cancer mortality was significantly elevated (SMR: 1.24, 95%CI: 1.08-1.41), but there was no evidence of a dose-response relationship.

CONCLUSION

We found evidence that occupational exposure to styrene was associated with increased LHC risk, while no such association was observed for lung cancer.

摘要

背景

关于苯乙烯暴露与癌症之间的关联,目前仅有少量且不一致的证据。

方法

本研究对先前研究的 5201 名在华盛顿两家造船厂工作的工人队列的死亡模式进行了研究,随访时间延长了 5 年。使用州级死亡率作为参照计算标准化死亡率比 (SMR)。Cox 回归计算了暴露于苯乙烯的工作岗位上每年的超额死亡率比 (RR)。

结果

与参照人群相比,未观察到淋巴造血系统癌症 (LHC)的超额死亡 (SMR:0.99,95%CI:0.74-1.30);然而,在内部分析中,相对风险随就业时间的延长而增加。相反,肺癌死亡率显著升高 (SMR:1.24,95%CI:1.08-1.41),但没有证据表明存在剂量反应关系。

结论

我们发现职业暴露于苯乙烯与 LHC 风险增加有关,而肺癌则没有这种关联。

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