Evidence map›Paper›PMID 17515584›Full record

Trial reportCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne2007

Influence of decision aids on patient preferences for anticoagulant therapy: a randomized trial.

Anne Holbrook, Renée Labiris, Charles H Goldsmith, Kaede Ota, Sandra Harb, Rolf J Sebaldt

Abstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 4 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

28 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Decision aids for people facing health treatment or screening decisions.The Cochrane database of systematic reviews · 2024
    Pooled it
  2. Decision aids for people facing health treatment or screening decisions.The Cochrane database of systematic reviews · 2017
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  16. Constructing a relevant decision aid for parents of children with bronchopulmonary dysplasia.Journal of perinatology : official journal of the California Perinatal Association · 2017
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Anne HolbrookDivision of Clinical Pharmacology & Therapeutics, Centre for Evaluation of Medicines, McMaster University, St. Joseph's Healthcare, Hamilton, Ont. holbrook@mcmaster.ca
Renée Labiris
Charles H Goldsmith
Kaede Ota
Sandra Harb
Rolf J Sebaldt

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDecision aids have been shown to be useful in selected situations to assist patients in making treatment decisions. Important features such as the format of decision aids and their graphic presentation of data on benefits and harms of treatment options have not been well studied.

methodsIn a randomized trial with a 3 x 2 factorial design, we investigated the effects of decision aid format (decision board, decision booklet with audiotape, or interactive computer program) and graphic presentation of data (pie graph or pictogram) on patients' comprehension and choices of 3 treatments for anticoagulation, identified initially as "treatment A" (warfarin), "treatment B" (acetylsalicylic acid) and "treatment C" (no treatment). Patients aged 65 years or older without known atrial fibrillation and not currently taking warfarin were included. The effect of blinding to the treatment name was tested in a before-after comparison. The primary outcome was change in comprehension score, as assessed by the Atrial Fibrillation Information Questionnaire. Secondary outcomes were treatment choice, level of satisfaction with the decision aid, and decisional conflict.

resultsOf 102 eligible patients, 98 completed the study. Comprehension scores (maximum score 10) increased by an absolute mean of 3.1 (p < 0.01) after exposure to the decision aid regardless of the format or graphic presentation. Overall, 96% of the participants felt that the decision aid helped them make their treatment choice. Unblinding of the treatment name resulted in 36% of the participants changing their initial choice (p < 0.001).

interpretationThe decision aid led to significant improvement in patients' knowledge regardless of the format or graphic representation of data. Revealing the name of the treatment options led to significant shifts in declared treatment preferences.

Indexed as

Decision Support TechniquesPatient SatisfactionAgedAnticoagulantsAtrial FibrillationAudiovisual AidsComputer GraphicsFemaleHealth Knowledge, Attitudes, PracticeHumansMaleMotivationPamphletsTerminology as TopicUser-Computer InterfaceAnticoagulants

Identifiers

PMID17515584
PMCPMC1867833

What OpenQuestion holds

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Registered trials

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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.