title: [Instructions for aggregated evidence: About reviews, systematic reviews and meta-analyses (part 2)].
abstract: Valid systematic reviews are essential for a safe navigation through the existing literature on a specific clinical topic. In the second part of our training to "Reviews, systematic reviews and meta-analyses", we explain how the results of systematic reviews and meta-analyses should be presented and how they should be interpreted. We describe the forest plot, with which you can get a quick overview of the results of numerous studies, the funnel plot, which can be useful for identifying a publication bias, and report on sensitivity and subgroup analyses, which are of great importance to discover the source of heterogeneity between individual studies. Finally, at the end of our article series, we hopefully convinced you of the importance to make up your own mind about the interpretation of the results of aggregated evidence.
authors.forename: Judith
authors.initials: J
authors.lastname: Günther
authors.forename: Matthias
authors.initials: M
authors.lastname: Briel
authors.forename: Birgit
authors.initials: B
authors.lastname: Schindler
mesh_terms: D019317:Evidence-Based Medicine; D006801:Humans; D015201:Meta-Analysis as Topic; D017594:Publication Bias; D012196:Review Literature as Topic