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Improving the quality of reports of meta-analyses of randomised controlled trials: the QUOROM statement
Abstract
Background The Quality of Reporting of Meta-analyses (QUOROM) conference was convened to address standards for improving the quality of reporting of meta-analyses of clinical randomised controlled trials (RCTs).Methods The QUOROM group consisted of 30 clinical epidemiologists, clinicians, statisticians, editors, and researchers. In conference, the group was asked to identify items they thought should be included in a checklist of standards. Whenever possible, checklist items were guided by research evidence suggesting that failure to adhere to the item proposed could lead to biased results. A modified Delphi technique was used in assessing candidate items.Findings The conference resulted in the QUOROM statement, a checklist, and a flow diagram. The checklist describes our preferred way to present the abstract, introduction, methods, results, and discussion sections of a report of a meta-analysis. It is organised into 21 headings and subheadings regarding searches, selection, validity assessment, data abstraction, study characteristics, and quantitative data synthesis, and in the results with "trial flow", study characteristics, and quantitative data synthesis; research documentation was identified for eight of the 18 items. The flow diagram provides information about both the numbers of RCTs identified, included, and excluded and the reasons for exclusion of trials.Interpretation We hope this report will generate further thought about ways to improve the quality of reports of meta-analyses of RCTs and that interested readers, reviewers, researchers, and editors will use the QUOROM statement and generate ideas for its improvement.
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“Similar initiatives have followed for other research areas—e.g., for the reporting of meta-analyses of randomised trials [16] or diagnostic studies [17].”
From The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) Statement: Guidelines for Reporting Observational Studies (2007) · cites this paper as [16]
In the citing paper
“Meta-analysis was performed according to the QUORUM guidelines (quality of reporting meta-analyses).”
From Comparative Efficacy and Harms of Duloxetine, Milnacipran, and Pregabalin in Fibromyalgia Syndrome (2010) · cites this paper as [47]
In the citing paper
“Mobile technology is also increasingly used to promote health and prevent disease (11, 13–17).”
From Text messaging as a tool for behavior change in disease prevention and management (2010) · cites this paper as [17]
In the citing paper
“Reporting guidelines have been demonstrated to improve reporting of research, thereby allowing for consumers of the research to be aware of the strengths, limitations, and accuracy of conclusions [12,82–84].”
From The Reporting of Studies Conducted Using Observational Routinely-Collected Health Data (RECORD) statement. (2015) · cites this paper as [83]
In the citing paper
“Similar initiatives have followed for other research areas d e.g., for the reporting of meta-analyses of randomised trials [16] or diagnostic studies [17].”
From The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) Statement: Guidelines for reporting observational studies (2014) · cites this paper as [16]
In the citing paper
“Examination of changes in reporting quality of MAs published in Medline, Embase and the Cochrane Database of Systematic Reviews, suggested that quality had improved after the release of the QUORUM reporting guidelines [18], [19].”
From Epidemiology, Quality and Reporting Characteristics of Systematic Reviews of Traditional Chinese Medicine Interventions Published in Chinese Journals (2011) · cites this paper as [18]
In the citing paper
“The QUOROM Statement, developed in 1996 and published in 1999 [8], was conceived as a reporting guidance for authors reporting a meta-analysis of randomized trials.”
From The PRISMA Statement for Reporting Systematic Reviews and Meta-Analyses of Studies That Evaluate Health Care Interventions: Explanation and Elaboration (2009) · cites this paper as [8]
In the citing paper
“In 1996, to address the suboptimal reporting of meta-analyses, an international group developed a guidance called the QUOROM Statement (QUality Of Reporting Of Meta-analyses), which focused on the reporting of meta-analyses of randomized controlled trials [8].”
From Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement (2009) · cites this paper as [8]
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Exercise for overweight or obesity
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Facial Emotion Perception in Schizophrenia: A Meta-analytic Review
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Metadata
- Authors
- Moher, D., Cook, D. J., Eastwood, S., Olkin, I., Rennie, D., & Stroup, D. F.
- Affiliations
- University of Ottawa (CA)
- McMaster University (CA)
- University of California, San Francisco (US)
- Stanford University (US)
- Centers for Disease Control and Prevention (US)
- Corresponding author
- Moher, David
- Venue
- The Lancet
- Publisher
- Elsevier BV
- Published
- 1999-11
- Volume
- 354
- Issue
- 9193
- Pages
- 1896-1900
- ISSN
- 0099-5355 (ISSN-L)
- 0140-6736
- OpenAlex
- W2000442546
- Cited by
- 4,826
- References
- 50
- Citations by year
- 2026: 24 · 2025: 50 · 2024: 64 · 2023: 75 · 2022: 81 · 2021: 88 · 2020: 100 · 2019: 91 · 2018: 104 · 2017: 136 · 2016: 139 · 2015: 181 · 2014: 232 · 2013: 253 · 2012: 256
- FWCI
- 131.65
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Lancet (publishedVersion)
- PubMed (publishedVersion)
- DigitalGeorgetown (Georgetown University Library) (submittedVersion)
- Funders
- Abbott Laboratories
- Topics
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
- Social Sciences › Sociology and Political Science › Delphi Technique in Research
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Clinical practice guidelines implementation
- Keywords
- reporting quality, meta-analysis, randomized controlled trials, reporting guidelines, checklists, flowcharts, trial selection, data synthesis, research documentation
- MeSH terms
- Authorship, Humans, Software Design, Meta-Analysis as Topic, Randomized Controlled Trials as Topic, Guidelines as Topic
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