TY  - JOUR
AU  - Bian, Jiantao
AU  - Weir, Charlene
AU  - Unni, Prasad
AU  - Borbolla, Damian
AU  - Reese, Thomas
AU  - Wan, Yik-Ki Jacob
AU  - Del Fiol, Guilherme
PY  - 2018
DA  - 2018/06/25
TI  - Interactive Visual Displays for Interpreting the Results of Clinical Trials: Formative Evaluation With Case Vignettes
JO  - J Med Internet Res
SP  - e10507
VL  - 20
IS  - 6
KW  - clinical decision-making
KW  - clinician information needs
KW  - information display
KW  - information foraging theory
KW  - information seeking behavior
AB  - Background: At the point of care, evidence from randomized controlled trials (RCTs) is underutilized in helping clinicians meet their information needs. Objective: To 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. Methods: We 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. Results: The 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). Conclusions: When 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. 
SN  - 1438-8871
UR  - http://www.jmir.org/2018/6/e10507/
UR  - https://doi.org/10.2196/10507
UR  - http://www.ncbi.nlm.nih.gov/pubmed/29941416
DO  - 10.2196/10507
ID  - info:doi/10.2196/10507
ER  -