吸烟与胃癌关系的Meta-分析

目的探讨吸烟与胃癌的关系。方法运用Meta分析技术进行综合定量分析,并按研究类型(病例对照和队列研究)和性别(男、女)分层进行合并分析。根据资料一致性检验,采用随机效应模型(D-L法)计算合并相对危险度(RR)及其95%的可信区间(95%CI)。结果吸烟与胃癌之间总合并RR为2.14(95%CI:1.12～4.06),男性吸烟与胃癌之间总合并RR为1.70(95%CI:1.34～2.14),女性吸烟与胃癌之间总合并RR为1.83(95%CI:0.10～33.09)。结论吸烟是胃癌发病的危险因素之一,男性吸烟可能增加患胃癌的危险性,女性吸烟与胃癌的关系还需进一步研究。

Meta-analysis of the relationship between smoking and stomach cancer

OBJECTIVE: To explore the risk of stomach cancer associated with cigarette smoking. METHODS: Meta-analysis was used to make formal summary statements about the relationship between smoking and stomach cancer. The results of the studies were analyzed by studied type(case-control study and cohort study) and gender(male and female). Homogeneity showed that random effect model should be selected to calculate the pooling relative risk (RR) and its corresponding 95% confidence interval (95%CI). RESULTS: The total pooling RR(95%CI) was 2.14(1.12-4.06), while the total pooling RRs (95%CI) of male and female smoking with stomach cancer were 1.70 (1.34-2.14) and 1.83 (0.10-33.09), respectively. CONCLUSIONS: Cigarette smoking is a risk factor for stomach cancer. Male smoking can increase risk of stomach cancer, however, the relationship between female smoking and stomach cancer should be studied further.