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CONSORT 2025 statement: updated guideline for reporting randomised trials

  • Sally Hopewell*
  • , An-Wen Chan
  • , Gary S. Collins
  • , Asbjorn Hróbjartsson
  • , David Moher
  • , Kenneth F. Schulz
  • , Ruth Tunn
  • , Rakesh Aggarwal
  • , Michael Berkwits
  • , Jesse A. Berlin
  • , Nita Bhandari
  • , Nancy J. Butcher
  • , Marion K. Campbell
  • , Runcie C. W. Chidebe
  • , Diana Elbourne
  • , Andrew Farmer
  • , Dean A. Fergusson
  • , Robert M. Golub
  • , Steven N. Goodman
  • , Tammy C. Hoffmann
  • John P. A. Ioannidis, Brennan C. Kahan, Rachel L. Knowles, Sarah E. Lamb, Steff Lewis, Elizabeth Loder, Martin Offringa, Philippe Ravaud, Dawn P. Richards, Frank W. Rockhold, David L. Schriger, Nandi L. Siegfried, Sophie Staniszewska, Rod S. Taylor, Lehana Thabane, David Torgerson, Sunita Vohra, Ian R. White, Isabelle Boutron
*Corresponding author for this work
  • University of Oxford
  • University of Toronto
  • University of Southern Denmark
  • University of Ottawa
  • University of North Carolina at Chapel Hill
  • Jawaharlal Institute of Postgraduate Medical Education and Research
  • Centers for Disease Control and Prevention
  • Center for Pharmacoepidemiology and Treatment Science
  • American Medical Association
  • Society for Applied Studies Kolkata
  • University of Aberdeen
  • Project PINK BLUE - Health & Psychological Trust Centre
  • Miami University
  • London School of Hygiene and Tropical Medicine
  • Northwestern University
  • Stanford University
  • Bond University
  • Medical Research Council
  • University College London
  • University of Exeter
  • University of Edinburgh
  • BMJ
  • Harvard University
  • Centre de Recherche Epidémiologiques et Bio Statistiques de Sorbonne Paris Cité (CRESS)
  • MaRS Centre
  • Duke University
  • University of California at Los Angeles
  • South African Medical Research Council
  • University of Warwick
  • University of Glasgow
  • McMaster University
  • St. Joseph's Healthcare Hamilton
  • University of York
  • University of Alberta
  • Université Paris 13
  • Hôpital Hotel-Dieu AP-HP

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Background: Well designed and properly executed randomised trials are considered the most reliable evidence on the benefits of healthcare interventions. However, there is overwhelming evidence that the quality of reporting is not optimal. The CONSORT (Consolidated Standards of Reporting Trials) statement was designed to improve the quality of reporting and provides a minimum set of items to be included in a report of a randomised trial. CONSORT was first published in 1996, then updated in 2001 and 2010. Here, we present the updated CONSORT 2025 statement, which aims to account for recent methodological advancements and feedback from end users. Methods: We conducted a scoping review of the literature and developed a project-specific database of empirical and theoretical evidence related to CONSORT, to generate a list of potential changes to the checklist. The list was enriched with recommendations provided by the lead authors of existing CONSORT extensions (Harms, Outcomes, Non-pharmacological Treatment), other related reporting guidelines (TIDieR) and recommendations from other sources (eg, personal communications). The list of potential changes to the checklist was assessed in a large, international, online, three-round Delphi survey involving 317 participants and discussed at a two-day online expert consensus meeting of 30 invited international experts. Results: We have made substantive changes to the CONSORT checklist. We added seven new checklist items, revised three items, deleted one item, and integrated several items from key CONSORT extensions. We also restructured the CONSORT checklist, with a new section on open science. The CONSORT 2025 statement consists of a 30-item checklist of essential items that should be included when reporting the results of a randomised trial and a diagram for documenting the flow of participants through the trial. To facilitate implementation of CONSORT 2025, we have also developed an expanded version of the CONSORT 2025 checklist, with bullet points eliciting critical elements of each item. Conclusion: Authors, editors, reviewers, and other potential users should use CONSORT 2025 when writing and evaluating manuscripts of randomised trials to ensure that trial reports are clear and transparent.
Original languageEnglish
Article numbere081123
JournalBMJ
Volume389
Early online date2025
DOIs
Publication statusPublished - 14 Apr 2025

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