Department of Anesthesiology, University of Michigan Health System, Ann Arbor, MI 48109, USA.
Am J Med. 2012 Nov;125(11):1103-10. doi: 10.1016/j.amjmed.2012.04.040. Epub 2012 Aug 28.
Conventional print materials for presenting risks and benefits of treatment are often difficult to understand. This study was undertaken to evaluate and compare subjects' understanding and perceptions of risks and benefits presented using animated computerized text and graphics.
Adult subjects were randomized to receive identical risk/benefit information regarding taking statins that was presented on an iPad (Apple Corp, Cupertino, Calif) in 1 of 4 different animated formats: text/numbers, pie chart, bar graph, and pictograph. Subjects completed a questionnaire regarding their preferences and perceptions of the message delivery together with their understanding of the information. Health literacy, numeracy, and need for cognition were measured using validated instruments.
There were no differences in subject understanding based on the different formats. However, significantly more subjects preferred graphs (82.5%) compared with text (17.5%, P<.001). Specifically, subjects preferred pictographs (32.0%) and bar graphs (31.0%) over pie charts (19.5%) and text (17.5%). Subjects whose preference for message delivery matched their randomly assigned format (preference match) had significantly greater understanding and satisfaction compared with those assigned to something other than their preference.
Results showed that computer-animated depictions of risks and benefits offer an effective means to describe medical risk/benefit statistics. That understanding and satisfaction were significantly better when the format matched the individual's preference for message delivery is important and reinforces the value of "tailoring" information to the individual's needs and preferences.
呈现治疗风险和益处的传统印刷材料通常很难理解。本研究旨在评估和比较使用动画计算机文本和图形呈现风险和益处时，受试者的理解和感知。
成年受试者被随机分配，通过 iPad（苹果公司，加利福尼亚州库比蒂诺）以 4 种不同动画格式中的 1 种接受关于服用他汀类药物的风险/益处的相同信息：文本/数字、饼图、柱状图和象形图。受试者完成了一份关于他们对信息传递的偏好和感知以及对信息理解的问卷。使用经过验证的工具来衡量健康素养、计算能力和认知需求。
不同格式对受试者的理解没有差异。然而，与文本相比，有更多的受试者更喜欢图表（82.5%）（P<.001）。具体而言，受试者更喜欢象形图（32.0%）和柱状图（31.0%），而不是饼图（19.5%）和文本（17.5%）。与被分配到与他们偏好不匹配的格式的受试者相比，偏好匹配的受试者在理解和满意度方面有显著提高。
结果表明，呈现风险和益处的计算机动画提供了一种描述医疗风险/益处统计数据的有效方法。当格式与个人对信息传递的偏好匹配时，理解和满意度显著提高，这一点非常重要，并强调了根据个人的需求和偏好“定制”信息的价值。
