UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Reporting of Factorial Randomized Trials: Extension of the CONSORT 2010 Statement

Kahan, BC; Hall, SS; Beller, EM; Birchenall, M; Chan, AW; Elbourne, D; Little, P; ... Montgomery, AA; + view all (2023) Reporting of Factorial Randomized Trials: Extension of the CONSORT 2010 Statement. JAMA: Journal of the American Medical Association , 330 (21) pp. 2106-2114. 10.1001/jama.2023.19793. Green open access

[thumbnail of Kahan_CONSORT extension paper (clean).pdf]
Preview
Text
Kahan_CONSORT extension paper (clean).pdf

Download (378kB) | Preview

Abstract

Importance: Transparent reporting of randomized trials is essential to facilitate critical appraisal and interpretation of results. Factorial trials, in which 2 or more interventions are assessed in the same set of participants, have unique methodological considerations. However, reporting of factorial trials is suboptimal. Objective: To develop a consensus-based extension to the Consolidated Standards of Reporting Trials (CONSORT) 2010 Statement for factorial trials. Design: Using the Enhancing the Quality and Transparency of Health Research (EQUATOR) methodological framework, the CONSORT extension for factorial trials was developed by (1) generating a list of reporting recommendations for factorial trials using a scoping review of methodological articles identified using a MEDLINE search (from inception to May 2019) and supplemented with relevant articles from the personal collections of the authors; (2) a 3-round Delphi survey between January and June 2022 to identify additional items and assess the importance of each item, completed by 104 panelists from 14 countries; and (3) a hybrid consensus meeting attended by 15 panelists to finalize the selection and wording of items for the checklist. Findings: This CONSORT extension for factorial trials modifies 16 of the 37 items in the CONSORT 2010 checklist and adds 1 new item. The rationale for the importance of each item is provided. Key recommendations are (1) the reason for using a factorial design should be reported, including whether an interaction is hypothesized, (2) the treatment groups that form the main comparisons should be clearly identified, and (3) for each main comparison, the estimated interaction effect and its precision should be reported. Conclusions and Relevance: This extension of the CONSORT 2010 Statement provides guidance on the reporting of factorial randomized trials and should facilitate greater understanding of and transparency in their reporting..

Type: Article
Title: Reporting of Factorial Randomized Trials: Extension of the CONSORT 2010 Statement
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1001/jama.2023.19793
Publisher version: http://dx.doi.org/10.1001/jama.2023.19793
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Humans, Checklist, Consensus, Disclosure, Randomized Controlled Trials as Topic, Reference Standards, Research Design
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Inst of Clinical Trials and Methodology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Inst of Clinical Trials and Methodology > MRC Clinical Trials Unit at UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10185160
Downloads since deposit
4Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item