The PRISMA 2020 statement: an updated guideline for reporting systematic reviews

Abstract

The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement, published in 2009, was designed to help systematic reviewers transparently report why the review was done, what the authors did, and what they found. Over the past decade, advances in systematic review methodology and terminology have necessitated an update to the guideline. The PRISMA 2020 statement replaces the 2009 statement and includes new reporting guidance that reflects advances in methods to identify, select, appraise, and synthesise studies. The structure and presentation of the items have been modified to facilitate implementation. In this article, we present the PRISMA 2020 27-item checklist, an expanded checklist that details reporting recommendations for each item, the PRISMA 2020 abstract checklist, and the revised flow diagrams for original and updated reviews.

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Affiliated Institutions

• Odense University Hospital DK
• Brigham and Women's Hospital US
• Public Health Ontario CA
• St. Michael's Hospital CA
• Université Paris Cité FR
• University of Southern Denmark DK
• Harvard University US
• Impact CA
• The University of Texas Health Science Center at San Antonio US
• Monash University AU
• Ottawa Hospital CA
• Unity Health Toronto
• University College London GB
• University of Toronto CA
• American University of Beirut LB
• Bruyère CA
• University of Amsterdam NL
• University of Bristol GB
• Indiana University Bloomington US
• Inserm FR
• University of York GB
• Leeds and York Partnership NHS Foundation Trust GB
• University of Colorado Denver US
• Bond University AU
• Ottawa Hospital Research Institute
• Academy of Medicine SG
• Queen's University CA
• McMaster University CA
• Johns Hopkins University US
• University of Ottawa CA
• Oregon Health & Science University US
• Cochrane DK
• Centre de Recherche Épidémiologie et Statistique

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