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We read with interest the report by Doorakkers et al describing the effect of Helicobacter pylori eradication in preventing the development of non-cardia gastric adenocarcinoma in a population-based Swedish cohort.1 The authors used nationwide Swedish registries to investigate the incidence of gastric adenocarcinoma after H. pylori eradication treatment. Specifically, standardised incidence ratios (SIRs) were used to examine the incidence of gastric adenocarcinoma in individuals treated for H. pylori compared with a background population of corresponding age, sex and calendar year distribution. The time trend of the SIRs after H. pylori eradication was assessed for up to 7.5 years.
The results showed that the risk of non-cardia gastric adenocarcinoma sharply decreased over time after …
Contributors The two authors have written, revised and approved the letter.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.
Patient consent for publication Not required.
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