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Improving GRADE evidence tables part 1: a randomized trial shows improved understanding of content in summary of findings tables with a new format

Akl, Elie A, Alonso-Coello, Pablo, Bossuyt, Patrick, Brignardello-Peterson, Romina, Brozek, Jan L, Carrasco-Labra, Alonso, Churchill, Rachel, De Stio, Catherine, Garner, Paul ORCID: https://orcid.org/0000-0002-0607-6941, Glenton, Claire, Guyatt, Gordon, Ikobaltzeta, Itziar, McCullagh, Lauren J, Mbuagbaw, Laurence, Meerpohl, Joerg J, Mustafa, Reem, A, Neumann, Ignacio, Rosenbaum, Sarah, Santesso, Nancy, Schunemann, Holger J, Tugwall, Peter, Vandvik, Per Olav and Welch, Vivian (2016) 'Improving GRADE evidence tables part 1: a randomized trial shows improved understanding of content in summary of findings tables with a new format'. Journal of Clinical Epidemiology, Vol 69.

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Abstract

Objectives
The current format of summary of findings (SoFs) tables for presenting effect estimates and associated quality of evidence improve understanding and assist users finding key information in systematic reviews. Users of SoF tables have demanded alternative formats to express findings from systematic reviews.

Study Design and Setting
We conducted a randomized controlled trial among systematic review users to compare the relative merits of a new format with the current formats of SoF tables regarding understanding, accessibility of information, satisfaction, and preference. Our primary goal was to show that the new format is not inferior to the current format.

Results
Of 390 potentially eligible subjects, 290 were randomized. Of seven items testing understanding, three showed similar results, two showed small differences favoring the new format, and two (understanding risk difference and quality of the evidence associated with a treatment effect) showed large differences favoring the new format [63% (95% confidence interval {CI}: 55, 71) and 62% (95% CI: 52, 71) more correct answers, respectively]. Respondents rated information in the alternative format as more accessible overall and preferred the new format over the current format.

Conclusions
While providing at least similar levels of understanding for some items and increased understanding for others, users prefer the new format of SoF tables

Item Type: Article
Additional Information: Available online 12 January 2016 Subjects> SM author can archive pre-print author can archive post-print author cannot archive publisher's version/PDF •Author's post-print on open access repository after an embargo period of between 12 months and 48 months Access>SM
Subjects: W General Medicine. Health Professions > Health Services. Patients and Patient Advocacy > W 84.4 Quality of Health Care
WA Public Health > Health Administration and Organization > WA 530 International health administration
WA Public Health > Statistics. Surveys > WA 900 Public health statistics
WA Public Health > Statistics. Surveys > WA 950 Theory or methods of medical statistics. Epidemiologic methods
Faculty: Department: Clinical Sciences & International Health > Clinical Sciences Department
Digital Object Identifer (DOI): https://doi.org/10.1016/j.jclinepi.2015.12.007
Depositing User: Stacy Murtagh
Date Deposited: 24 Feb 2016 12:32
Last Modified: 06 Sep 2019 10:15
URI: https://archive.lstmed.ac.uk/id/eprint/5695

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