Evidence map›Paper›PMID 35975784›Full record

ArticleeLife2022

The proportion of randomized controlled trials that inform clinical practice.

Nora Hutchinson, Hannah Moyer, Deborah A Zarin, Jonathan Kimmelman

Abstract read
In one paragraph

Article in eLife, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Strategic policy options to improve quality and productivity of biomedical research.Politics and the life sciences : the journal of the Association for Politics and the Life Sciences · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Scientia pro bono humani generis: Science for the benefit of humanity.Journal of clinical and translational science · 2024
    Article
  15. Article
  16. Observational
  17. Article
  18. Article
  19. N-of-1 trials: The epitome of personalized medicine?Journal of clinical and translational science · 2023
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Nora HutchinsonStudies of Translation, Ethics and Medicine (STREAM), Dept. of Equity, Ethics and Policy, McGill University, Montreal, Canada.ORCID 0000-0003-1349-8592
Hannah MoyerStudies of Translation, Ethics and Medicine (STREAM), Dept. of Equity, Ethics and Policy, McGill University, Montreal, Canada.ORCID 0000-0002-5617-7927
Deborah A ZarinMulti-Regional Clinical Trials Center of Brigham and Women's Hospital and Harvard, Boston, United States.
Jonathan KimmelmanStudies of Translation, Ethics and Medicine (STREAM), Dept. of Equity, Ethics and Policy, McGill University, Montreal, Canada.ORCID 0000-0003-1614-6779

Funding

CIHR
6 · The paper itself

Abstract

Prior studies suggest that clinical trials are often hampered by problems in design, conduct, and reporting that limit their uptake in clinical practice. We have described 'informativeness' as the ability of a trial to guide clinical, policy, or research decisions. Little is known about the proportion of initiated trials that inform clinical practice. We created a cohort of randomized interventional clinical trials in three disease areas (ischemic heart disease, diabetes mellitus, and lung cancer) that were initiated between January 1, 2009 and December 31, 2010 using ClinicalTrials.gov. We restricted inclusion to trials aimed at answering a clinical question related to the treatment or prevention of disease. Our primary outcome was the proportion of clinical trials fulfilling four conditions of informativeness: importance of the clinical question, trial design, feasibility, and reporting of results. Our study included 125 clinical trials. The proportion meeting four conditions for informativeness was 26.4% (95% CI 18.9-35.0). Sixty-seven percent of participants were enrolled in informative trials. The proportion of informative trials did not differ significantly between our three disease areas. Our results suggest that the majority of randomized interventional trials designed to guide clinical practice possess features that may compromise their ability to do so. This highlights opportunities to improve the scientific vetting of clinical research.

Indexed as

Randomized Controlled Trials as TopicHumansclinical trialsinformative researchmedicinenoneresearch ethics

Identifiers

PMID35975784
PMCPMC9427100

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.