alexa Helicobacter pylori infection treatment of nonulcer dyspepsia: an analysis of meta-analyses.
Medicine

Medicine

General Medicine: Open Access

Author(s): Laheij RJ, van Rossum LG, Verbeek AL, Jansen JB

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Abstract BACKGROUND: Meta-analysis is often used to resolve uncertainty in magnitude of effect between studies. However, several meta-analyses investigating the association between Helicobacter pylori infection and nonulcer dyspepsia reported contradictory results. GOALS: To perform a systematic review of the conflicting data in meta-analyses examining the association between H. pylori infection and nonulcer dyspepsia. STUDY: Five meta-analyses were identified: three studied the relation between H. pylori treatment and nonulcer dyspepsia, one studied the relation between H. pylori eradication and nonulcer dyspepsia, and one reported both. Data on search strategy, study selection, study inclusion, data abstraction, reported results of included studies, and summarized effect estimates were collected. RESULTS: Overall, 29 studies were included in the five meta-analyses. Nine studies (31\%) were evaluated in more than one meta-analysis. There was no disagreement between the meta-analyses concerning the interpretation of outcome per investigated study; the results from seven (24\%) studies showed improvement of dyspeptic symptoms after H. pylori treatment or eradication. The odds ratio of symptom relief in the control groups relative to the treated groups varied between 0.30 (95\% CI = 0.2-0.5) to 0.88 (95\% CI = 0.7-1.2). The proportion of patients' symptom free due to H. pylori treatment varied between 11\% and 38\%. CONCLUSIONS: The reported conflicting results between the meta-analyses were mainly a result of differences in study selection (eligibility and quality criteria) and relatively small. In a subgroup of patients with nonulcer dyspepsia, H. pylori eradication is useful for relief of symptoms.
This article was published in J Clin Gastroenterol and referenced in General Medicine: Open Access

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