Department of Biostatistics and Medical Informatics, Faculty of Medicine, Akdeniz University, Antalya, Turkey.
Inform Health Soc Care. 2011 Dec;36(4):190-205. doi: 10.3109/17538157.2011.553296. Epub 2011 Feb 23.
'Personal Nutrition Management Tool' (PENUMAT) is an interactive web-based application which aims to help individuals seeking nutrition information on the Internet. However, little is known about the usability of such applications. The purpose of this study was to evaluate the usability of PENUMAT using multi-method approach. For an in-depth usability analysis, using a multi-method approach involving protocol analysis, interviews and a system usability scale (SUS) was adopted. The sample consisted of 10 healthy (five males and five females) volunteers between the ages of 22 and 60. The overall usability score was calculated; usability problems and users' opinions were obtained. All usability problems were classified according to the heuristics and listed with their frequencies. Overall, the usability score ranged from 77.5 to 100, with a median of 88.7. In-depth usability analysis exposed several usability problems mostly related to content, navigation and interactivity. Interview results showed that 'being personal and private' (70%) and 'providing personal feedbacks' (60%) were the most appreciated characteristics of the tool. Although the tool has an acceptable overall usability score, several unnoticed usability problems of the interface design were realised with the in-depth analysis. Therefore, the importance of using a multi-method analysis of usability was pointed out.
“个人营养管理工具”（PENUMAT）是一个互动的网络应用程序，旨在帮助个人在互联网上获取营养信息。然而，对于此类应用程序的可用性知之甚少。本研究旨在采用多方法评估 PENUMAT 的可用性。为了进行深入的可用性分析，采用了多方法的方法，包括协议分析、访谈和系统可用性量表（SUS）。样本由 10 名年龄在 22 岁至 60 岁之间的健康志愿者（男女各 5 名）组成。计算了总体可用性得分；获得了可用性问题和用户意见。根据启发式原则对所有可用性问题进行分类，并列出其频率。总体而言，可用性得分范围为 77.5 至 100，中位数为 88.7。深入的可用性分析暴露了一些可用性问题，主要与内容、导航和交互性有关。访谈结果表明，“个性化和隐私性”（70%）和“提供个性化反馈”（60%）是该工具最受赞赏的特征。尽管该工具具有可接受的总体可用性得分，但通过深入分析发现了一些未被注意到的界面设计可用性问题。因此，指出了使用多方法进行可用性分析的重要性。
