Usability Testing Finds Problems for Novice Users of Pediatric Portals
Usability Testing Finds Problems for Novice Users of Pediatric Portals
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DOI：
10.1197/jamia.m3154
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发表时间：
2009-09-01
影响因子：
6.4
通讯作者：
Hersh, William
中科院分区：
文献类型：
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作者：
Britto, Maria T.;Jimison, Holly B.;Hersh, William
目标：患者门户网站可能会改善儿科慢性病的预后，但很少有家长对其可用性进行严格评估。我们使用基于场景的测试和出声思考协议，评估了门户网站对患有囊性纤维化、糖尿病或关节炎的儿童家长的可用性。设计：16 位家长使用原型和测试数据完成 14 项任务，然后填写经过验证的满意度调查问卷。使用了原型的三次迭代。测量：在可用性测试期间，我们测量了参与者完成或放弃每项任务所需的时间。会议被录像并针对共同主题进行内容分析。测试结束后，参与者完成了计算机可用性满意度调查问卷，衡量了他们对系统效率、易用性以及系统界面的喜爱程度的看法。使用 7 点李克特量表，其中 7 点表示最高的满意度。 结果：平均任务完成时间范围为查找文档的 73 (+/- 61) 秒到绘制实验室结果的 431 (+/- 286) 秒。绘图、数据位置、请求访问和数据解释等任务非常具有挑战性。界面舒适度 (5.9 +/- 0.7) 和喜爱度 (5.8 +/- 0.6) 满意度最高，错误消息 (2.3 +/- 1.2) 和信息清晰度 (4.2 +/- 1.4) 满意度最低。总体平均满意度得分在迭代第一到第三次之间有所提高。结论：尽管有家长参与和先前的启发式测试，但基于场景的测试在导航、医学语言复杂性、错误恢复和基于提供者的组织模式方面表现出了困难。虽然这种可用性测试可能很昂贵，但当前的研究表明，它可以帮助为非专业人士提供更加用户友好的医疗保健系统界面，并且对于患者及其家人来说可能更加实用。
Objective: Patient portals may improve pediatric chronic disease outcomes, but few have been rigorously evaluated for usability by parents. Using scenario-based testing with think-aloud protocols, we evaluated the usability of portals for parents of children with cystic fibrosis, diabetes or arthritis.Design: Sixteen parents used a prototype and test data to complete 14 tasks followed by a validated satisfaction questionnaire. Three iterations of the prototype were used.Measurements: During the usability testing, we measured the time it took participants to complete or give up on each task. Sessions were videotaped and content-analyzed for common themes. Following testing, participants completed the Computer Usability Satisfaction Questionnaire which measured their opinions on the efficiency of the system, its ease of use, and the likability of the system interface. A 7-point Likert scale was used, with seven indicating the highest possible satisfaction.Results: Mean task completion times ranged from 73 (+/- 61) seconds to locate a document to 431 (+/- 286) seconds to graph laboratory results. Tasks such as graphing, location of data, requesting access, and data interpretation were challenging. Satisfaction was greatest for interface pleasantness (5.9 +/- 0.7) and likeability (5.8 +/- 0.6) and lowest for error messages (2.3 +/- 1.2) and clarity of information (4.2 +/- 1.4). Overall mean satisfaction scores improved between iteration one and three.Conclusions: Despite parental involvement and prior heuristic testing, scenario-based testing demonstrated difficulties in navigation, medical language complexity, error recovery, and provider-based organizational schema. While such usability testing can be expensive, the current study demonstrates that it can assist in making healthcare system interfaces for laypersons more user-friendly and potentially more functional for patients and their families.