Cited by 115Statistical Methods in Clinical TrialsMeta-analysis and systematic reviewsStatistical Methods in Epidemiology

Problems of stopping trials early

Guyatt, G. H., Briel, M., Glasziou, P., Bassler, D., Montori, V. M.·2012·BMJ

Abstract

When interim analyses of randomised trials suggest large beneficial treatment effects, investigators sometimes terminate trials earlier than planned. Gordon H Guyatt and colleagues show how this practice can have far reaching and harmful consequences

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Crossref · 10.1136/bmj.e3863

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17 of 17 references verified0 citation errors · 0 not checkable

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  • The trial was stopped early at a planned interim analysis, which may have limited the power for some secondary outcomes and may increase the risk of overestimating effect sizes.

    “First, the trial was stopped early at a planned interim analysis, which may have limited the power for some secondary outcomes and may increase the risk of overestimating effect sizes.21”

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Authors
Guyatt, G. H., Briel, M., Glasziou, P., Bassler, D., & Montori, V. M.
Affiliations
  • McMaster University (CA)
  • University Hospital of Basel (CH)
  • Bond University (AU)
  • University Children's Hospital Tübingen (DE)
  • Mayo Clinic (US)
Corresponding author
Guyatt, G. H.
Venue
BMJ
Publisher
BMJ
Published
2012-06-15
Volume
344
Issue
jun15 1
Pages
e3863-e3863
ISSN
1756-1833 (ISSN-L)
OpenAlex
W1995995252
Cited by
115
References
17
Citations by year
2025: 3 · 2024: 8 · 2023: 11 · 2022: 8 · 2021: 7 · 2020: 11 · 2019: 15 · 2018: 6 · 2017: 12 · 2016: 7 · 2015: 8 · 2014: 11 · 2013: 7
FWCI
7.94
Type
journal article
Language
en
Open access
closed
Locations
  • BMJ (publishedVersion)
  • PubMed (publishedVersion)
  • Bond University Research Portal (Bond University) (submittedVersion)
Topics
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Clinical Trials
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
Keywords
early trial termination, interim analysis, randomized controlled trials, treatment effect estimation, statistical power
MeSH terms
Adrenergic beta-Antagonists, Decision Making, Humans, Insulin, Myocardial Infarction, Protein C, Research Design, Surgical Procedures, Operative, Time Factors, Randomized Controlled Trials as Topic, Critical Illness, Treatment Outcome, Sepsis, Endpoint Determination, Clinical Trials Data Monitoring Committees, Ethics, Research

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