Reporting of interventions in randomised trials: An audit of journal Instructions to Authors

Hoffmann, Tammy, English, Thomas and Glasziou, Paul (2014) Reporting of interventions in randomised trials: An audit of journal Instructions to Authors. Trials, 15 1: . doi:10.1186/1745-6215-15-20

Author Hoffmann, Tammy
English, Thomas
Glasziou, Paul
Title Reporting of interventions in randomised trials: An audit of journal Instructions to Authors
Journal name Trials   Check publisher's open access policy
ISSN 1745-6215
Publication date 2014-01-14
Year available 2014
Sub-type Article (original research)
DOI 10.1186/1745-6215-15-20
Open Access Status DOI
Volume 15
Issue 1
Total pages 6
Place of publication London, United Kingdom
Publisher BioMed Central Ltd
Language eng
Subject 2701 Medicine (miscellaneous)
2736 Pharmacology (medical)
Formatted abstract
Background: A complete description of the intervention in a published trial report is necessary for readers to be able to use the intervention, yet the completeness of intervention descriptions in trials is very poor. Low awareness of the issue by authors, reviewers, and editors is part of the cause and providing specific instructions about intervention reporting to authors and encouraging full sharing of intervention materials is important. We assessed the extent to which: 1) journals' Instructions to Authors provide instructions about how interventions that have been evaluated in a randomised controlled trial (RCT) should be reported in the paper; and 2) journals offer the option of authors providing online supplementary materials.

Methods: We examined the web-based Instructions to Authors of 106 journals (the six leading general medical journals, 50 randomly selected journals from the National Library of Medicine's Core Clinical Journals, and 50 randomly selected journals from the remainder of the journal collection indexed by PubMed). To be eligible, each journal must have published at least one randomised trial involving human participants each year from 2008 to 2012. We extracted all information related to the reporting of interventions, reporting of randomised trials in general, and online supplementary materials.

Results: Of the 106 journals' Instructions to Authors, only 15 (14%) specifically mentioned the reporting of interventions and most of these provided non-specific advice such as 'describe essential features'. Just over half (62, 58%) of the journals mentioned the Consolidated Standards of Reporting Trials (CONSORT) statement in their author instructions. Seventy-eight (74%) of the journals' instructions mentioned the option of providing supplementary content online as part of the paper; however, only four of these journals explicitly encouraged or mandated use of this option for providing intervention information or materials.

Conclusions: Most journals' Instructions to Authors do not provide any specific instructions regarding reporting of interventions or encourage authors to provide online supplementary materials to enhance intervention reporting. Journals can help to improve the problem of incomplete intervention reporting by providing specific instructions to authors and peer reviewers about intervention reporting and requiring full intervention descriptions to be provided.
Keyword Consort
Intervention reporting
Randomised controlled trial reporting
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Health and Rehabilitation Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 17 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 21 times in Scopus Article | Citations
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