Evidence map›Paper›PMID 29454390›Full record

ArticleTrials2018

Promoting public access to clinical trial protocols: challenges and recommendations.

An-Wen Chan, Asbjørn Hróbjartsson

Abstract readLetter
In one paragraph

Article in Trials, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 3 pooled it
–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

32 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. A systematic review of trials currently investigating therapeutic modalities for post-acute COVID-19 syndrome and registered on WHO International Clinical Trials Platform.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2023
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Review
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  7. Assessing the assessment: a scoping review of the mode of patient-reported outcome assessment in solid cancer clinical trials.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026
    Article
  8. Article
  9. Review
  10. [Interpretation and Examples: Key Updates in SPIRIT 2025 Statement].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2025
    Article
  11. Article
  12. Article
  13. Article
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  15. Article
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  17. Volunteering for Infection: Participant Perspectives on a Hepatitis C Virus Controlled Human Infection Model.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023
    Article
  18. Article
  19. 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

2 authors.

An-Wen ChanWomen's College Research Institute, Women's College Hospital, 76 Grenville St, Rm 6416, Toronto, ON, M5S 1B2, Canada. anwen.chan@utoronto.ca.
Asbjørn HróbjartssonCenter for Evidence-Based Medicine, Odense University Hospital, Odense, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRecognizing the value of promoting public access to clinical trial protocols, Trials pioneered the way for their publication over a decade ago. However, despite major advances in the public accessibility of information about trial methods and results, protocol sharing remains relatively rare. MAIN BODY: Protocol sharing facilitates the critical appraisal of clinical trials and helps to identify and deter the selective reporting of outcomes and analyses. Challenges to the routine availability of high quality trial protocols include the gaps in incentives and adherence mechanisms, limited venues for sharing the original and final protocol versions, and the need for mechanisms to ensure transparent and complete protocol content.

conclusionsWe propose recommendations for addressing key challenges to protocol sharing in order to promote routine public access to protocols for the benefit of patients and other users of evidence from clinical trials.

Indexed as

Access to InformationClinical Trial Protocols as TopicInformation DisseminationPeriodicals as TopicHumansClinical trial protocolPublicationSelective reportingTransparency

Identifiers

PMID29454390
PMCPMC5816550

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.