Multiple publication of reports of drug trials.
Abstract
Fourty-four multiple publications of 31 comparative trials of nonsteroidal anti-inflammatory drugs in rheumatoid arthritis were examined for mutual agreement. Thirty-two of the papers were published in the same language as the primary version. Important discrepancies were seen in 14 trials, involving description of the study design in two, exclusion of protocol violators in two, inconsistency in the number of effect variables in five, in the number of side-effects in five, and in the significance level in one. In three articles the conclusion became more favourable for the new drug with time. Only half of the trials had the same first author and number of authors. For six trials, multiple publication was difficult to detect. Adherence to the manuscript guidelines published by the International Committee of Medical Journal Editors should diminish the risk of inflated meta-analyses, reference lists and curricula vitae, and inexplicable discrepancies in articles based on the same data.
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A review of multiple publications of drug trials showed that reported study characteristics may differ from report to report, including design, number of patients analyzed, chosen significance level, and outcomes.
“a review of multiple publications of drug trials showed that reported study characteristics may differ from report to report, including the description of the design, number of patients analyzed, chosen significance level, and outcomes [82].”
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 [82]
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- Authors
- G�tzsche, P. C.
- Venue
- European Journal of Clinical Pharmacology
- Published
- 1989
- Volume
- 36
- Issue
- 5
- Pages
- 429-432
- ISSN
- 0031-6970 (ISSN-L)
- 1432-1041
- OpenAlex
- W100934611
- Cited by
- 113
- References
- 13
- Citations by year
- 2025: 1 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 6 · 2016: 1 · 2015: 1 · 2014: 8 · 2013: 4 · 2012: 3
- FWCI
- 1.77
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- European Journal of Clinical Pharmacology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Social Sciences › Safety Research › Academic integrity and plagiarism
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmaceutical industry and healthcare
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
- Keywords
- duplicate publication, nonsteroidal anti-inflammatory drugs, rheumatoid arthritis, comparative drug trial, meta-analysis bias, publication ethics
- MeSH terms
- Anti-Inflammatory Agents, Non-Steroidal, Clinical Trials as Topic, Epidemiologic Methods, Humans, MEDLARS, Publishing, Research Design, United States
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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