Evidence map›Paper›PMID 25341445›Full record

Trial reportJournal of the Royal Society of Medicine2014

How much do you need: a randomised experiment of whether readers can understand the key messages from summaries of Cochrane Reviews without reading the full review.

Lisa K Maguire, Mike Clarke

Registry-linked trialAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of the Royal Society of Medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07333924 (How Can we Best Communicate the Findings of Systematic Reviews to the Public? A Study Within A Review), which is not on this map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 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.

NCT07333924 phase3completednot on this mapstarted 2026, after this paper: background citation

How Can we Best Communicate the Findings of Systematic Reviews to the Public? A Study Within A Review

TypeinterventionalSponsorQueen's University, BelfastRan2026 to 2026Enrolled67ConditionsBehavioral ChangesArmsPlain language summary, Animated video
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Study within a review (SWAR).Journal of evidence-based medicine · 2022
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Why do we need evidence-based methods in Cochrane?The Cochrane database of systematic reviews · 2015
    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.

Lisa K MaguireAll-Ireland Hub for Trials Methodology Research, Centre for Public Health, Queen's University Belfast, Institute of Clinical Science, Belfast, BT12 6BJ, UK lisa.maguire@qub.ac.uk.
Mike ClarkeAll-Ireland Hub for Trials Methodology Research, Centre for Public Health, Queen's University Belfast, Institute of Clinical Science, Belfast, BT12 6BJ, UK.

Funding

Medical Research Council MR/K023241/1
6 · The paper itself

Abstract

objectiveWe explored whether readers can understand key messages without having to read the full review, and if there were differences in understanding between various types of summary.

designA randomised experiment of review summaries which compared understanding of a key outcome.

participantsMembers of university staff (n = 36).

settingUniversities on the island of Ireland.

methodThe Cochrane Review chosen examines the health impacts of the use of electric fans during heat waves. Participants were asked their expectation of the effect these would have on mortality. They were then randomly assigned a summary of the review (i.e. abstract, plain language summary, podcast or podcast transcription) and asked to spend a short time reading/listening to the summary. After this they were again asked about the effects of electric fans on mortality and to indicate if they would want to read the full Review.

main outcome measureCorrect identification of a key review outcome.

resultsJust over half (53%) of the participants identified its key message on mortality after engaging with their summary. The figures were 33% for the abstract group, 50% for both the plain language and transcript groups and 78% for the podcast group.

conclusionsThe differences between the groups were not statistically significant but suggest that the audio summary might improve knowledge transfer compared to written summaries. These findings should be explored further using a larger sample size and with other reviews.

Indexed as

ComprehensionEvidence-Based MedicineReadingReview Literature as TopicBody Temperature RegulationElectrical Equipment and SuppliesExtreme HeatFemaleHealth LiteracyHousehold ArticlesHumansInformation DisseminationIrelandMaleProspective Studiesacademic communicationcomputer-mediated communicationdisseminationinformation retrievalsystematic reviews

Identifiers

PMID25341445
PMCPMC4224648

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.