Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)
The PRISMA Statement provides guidelines for transparent reporting of systematic reviews and meta-analyses. The PRISMA Checklist presents the preferred layout of systematic reviews and is a helpful resource to refer to throughout the process.
PRISMA Statement extensions have been developed to facilitate the reporting of different types or aspects of systematic reviews, including:
Meta-analysis of Observation Studies in Epidemiology (MOOSE)
The consensus statement from the MOOSE group proposes a checklist with specifications for reporting that "...should improve the usefulness of meta-analyses for authors, reviewers, editors, readers, and decision makers."
Appraisal of Guidelines for Research and Evaluation (AGREE) Instrument
"The AGREE Instrument evaluates the process of practice guideline development and the quality of reporting. The original AGREE Instrument has been updated and methodologically refined. The AGREE II is now the new international tool for the assessment of practice guidelines. The AGREE II is both valid and reliable and comprises 23 items organized into the original 6 quality domains."
Additional reporting guidelines are under development and available on the EQUATOR Network website (Enhancing the QUAlity and Transparency Of health Research), including:
The search methods section of systematic reviews and meta-analyses should describe the database searches in detail, including:
The search methods should also describe in detail:
Liberati, A., Altman, D. G., Tetzlaff, J., Mulrow, C., Gøtzsche, P. C., Ioannidis, J. P., Clarke, M., Devereaux, J. K. & Moher, D. (2009). The PRISMA statement for reporting systematic reviews and meta-analyses of studies that evaluate health care interventions: explanation and elaboration. Annals of Internal Medicine, 151(4), W-65-W-94. (Note that in order to encourage dissemination of the PRISMA Statement it has been published in several journals).