Abstract
背景与目的本研究旨在探讨中国非吸烟人群被动吸烟与肺癌的关系。方法通过计算机检索Medline、PubMed、CENTRAL(the Cochrane central register of controlled trials)、中国生物医学文献数据库系统(CBM)、中国期刊全文数据库(CNKI)、中文科技期刊全文数据库(VIP)等收集国内外1987年-2007年间公开发表的关于中国非吸烟人群被动吸烟与肺癌的研究文献,应用统计软件Stata 11.0进行数据分析,计算其合并优势比(odds ratio, OR)和95%置信区间(confidence interval, CI)。采用Begg和Egger法对发表偏倚进行量化检测。结果纳入分析的文章共有16篇,合并分析结果表明:中国非吸烟人群被动吸烟与肺癌的关系有统计学意义(OR=1.13, 95%CI: 1.05-1.21, P=0.001)。每日被动吸烟≥20支、成年时期被动吸烟、非吸烟女性被动吸烟、被动吸烟暴露于工作环境等与肺癌的发生关系具有统计学意义,P值、OR值及95%CI分别为:P=0.000 3、OR=1.78、95%CI: 1.30-2.43,P=0.000 1、OR=1.50、95%CI: 1.23-1.83,P=0.000 7、OR=1.50、95%CI: 1.19-1.90,P < 0.000 1、OR=1.41、95%CI: 1.19-1.66。结论中国非吸烟人群中,被动吸烟是肺癌发生的一个重要危险因素,尤其是暴露量≥20支/日、成年时期被动吸烟、女性、工作环境的被动吸烟与肺癌的发生关系密切。
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