• 1. Public Health School, Harbin Medical University, Harbin 150001, China2. Department of Diagnosis, Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China;
WANG Binyou, Email: zhangjianzhong@icdc.cn
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Objective  To analyze the relationship between helicobacter pylori (HP) and gastric cancer.
Methods  We searched CNKI (Jan.1995-Dec.2005) and Wangfandatabase (Jan.1995-Dec.2005). Case-control studies on relationship of helicobacter pylori infection and gastric cancer were collected. Meta-analysis method was used to sum up the odds ratio (OR) and 95%CI of these studies.
Results  We identified 14 case-control studies with 11 studies of healthy adults versus gastric cancer patients and 4 studies of gastritis versus gastric cancer patients. The results of subgroup analyses based on patients resource showed: statistical difference was founded between healthy adults and gastric cancer patients with pooled OR 2.00 and 95%CI 1.25 to 3.20; no statistical difference was founded between gastritis patients and gastric cancer patients with pooled OR 1.54 and 95%CI 0.68 to 3.50. The results of subgroup analyses based on locations of gastric cancer showed: statistical difference was founded between the non-cardiac gastric cancer patients and the control with pooled OR 3.60 and 95%CI 1.25 to 10.36; no statistical difference was found between cardiac gastric cancer patients and control with pooled OR 0.88 and 95%CI 0.56 to 1.39.
Conclusion  HP infection can be associated with gastric cancer, and the different conclusions of the 14 reports may be attributed to the locations of gastric cancer and the selection of controls.

Citation: TIAN Wenjing,WANG Binyou,ZHANG Jianzhong,ZHAO Jingbo. Meta-analysis on Relationship Between Helicobacter Pylori Infection and Gastric Cancer. Chinese Journal of Evidence-Based Medicine, 2006, 06(11): 833-838. doi: Copy