Chemoprevention of gastric cancer development after Helicobacter pylori eradication therapy in an East Asian population: Meta-analysis

Figure 5 Forest plots of the incidence of gastric cancer between Helicobacter pylori-negative and -positive groups with atrophic gastritis in studies of different observation period length, < 5 years (A) and > 5 years (B). Forest plots of the incidence of metachronous gastric cancer in cases treated for gastric cancer in studies of different observation period length, < 5 years (C) and > 5 years (D). A: Non-gastric cancer with atrophic gastritis: within 5 years of resection; B: Non-gastric cancer with atrophic gastritis: more than 5 years after resection; C: Metachronous cancer: within 5 years of resection; D: Metachronous cancer: more than 5 years after resection.