Presenting time-based risks of stroke and death for Patients facing carotid stenosis treatment options: Patients prefer pie charts over icon arrays

摘要

Objective: To user-test graphical display formats (icon arrays, pie, bar, and line charts) to identify preferred formats and metrics ('probability of death or stroke' or 'proportion of time lived without death or stroke') in order to display time-dependent risks of stroke or death for three carotid stenosis treatments: endarterectomy (surgery), stenting, and medical therapy.