• J. Med. Internet Res. · Jun 2018

    Interactive Visual Displays for Interpreting the Results of Clinical Trials: Formative Evaluation With Case Vignettes.

    • Jiantao Bian, Charlene Weir, Prasad Unni, Damian Borbolla, Thomas Reese, Yik-Ki Jacob Wan, and Guilherme Del Fiol.
    • Department of Biomedical Informatics, University of Utah, Salt Lake City, UT, United States.
    • J. Med. Internet Res. 2018 Jun 25; 20 (6): e10507.

    BackgroundAt the point of care, evidence from randomized controlled trials (RCTs) is underutilized in helping clinicians meet their information needs.ObjectiveTo design interactive visual displays to help clinicians interpret and compare the results of relevant RCTs for the management of a specific patient, and to conduct a formative evaluation with physicians comparing interactive visual versus narrative displays.MethodsWe followed a user-centered and iterative design process succeeded by development of information display prototypes as a Web-based application. We then used a within-subjects design with 20 participants (8 attendings and 12 residents) to evaluate the usability and problem-solving impact of the information displays. We compared subjects' perceptions of the interactive visual displays versus narrative abstracts.ResultsThe resulting interactive visual displays present RCT results side-by-side according to the Population, Intervention, Comparison, and Outcome (PICO) framework. Study participants completed 19 usability tasks in 3 to 11 seconds with a success rate of 78% to 100%. Participants favored the interactive visual displays over narrative abstracts according to perceived efficiency, effectiveness, effort, user experience and preference (all P values <.001).ConclusionsWhen interpreting and applying RCT findings to case vignettes, physicians preferred interactive graphical and PICO-framework-based information displays that enable direct comparison of the results from multiple RCTs compared to the traditional narrative and study-centered format. Future studies should investigate the use of interactive visual displays to support clinical decision making in care settings and their effect on clinician and patient outcomes.©Jiantao Bian, Charlene Weir, Prasad Unni, Damian Borbolla, Thomas Reese, Yik-Ki Jacob Wan, Guilherme Del Fiol. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 25.06.2018.

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