Systematic review with meta‐analysis: the worldwide prevalence of Helicobacter pylori infection

The epidemiology of Helicobacter pylori infection is poorly understood.To establish the reported regional and national prevalence of H. pylori infection, stratified by age and gender.All relevant English publications from 2000 to 2017 cited by PubMed and Scopus were retrieved using comprehensive combinations of keywords. The overall prevalence of H. pylori was estimated using both random effect and fixed effect meta-analyses, and presented as...