Inclusion criteria | Exclusion criteria |
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• Country and setting: Ethiopia and any setting • Study design: any study design • Outcome: reported the prevalence or number of H.pylori cases and sample size • Type of articles: full text and peer-reviewed; published in English language • Publication year: up to June 30, 2018 • Types of diagnosis: reported any laboratory tests | • Evaluation of diagnostic tests and antimicrobial sensitivity • Systematic reviews and meta-analysis • Studies on virulence factor genes • Studies on age at acquisition of H.pylori infection and its effect • Studies emerged from single cohort study with similar prevalence report |