Department of Health Information Management, University of Pittsburgh, Pittsburgh, PA, United States.
Department of Computer Science, Udayana University, Badung, Bali, Indonesia.
JMIR Mhealth Uhealth. 2019 Apr 11;7(4):e11500. doi: 10.2196/11500.
After a mobile health (mHealth) app is created, an important step is to evaluate the usability of the app before it is released to the public. There are multiple ways of conducting a usability study, one of which is collecting target users' feedback with a usability questionnaire. Different groups have used different questionnaires for mHealth app usability evaluation: The commonly used questionnaires are the System Usability Scale (SUS) and Post-Study System Usability Questionnaire (PSSUQ). However, the SUS and PSSUQ were not designed to evaluate the usability of mHealth apps. Self-written questionnaires are also commonly used for evaluation of mHealth app usability but they have not been validated.
The goal of this project was to develop and validate a new mHealth app usability questionnaire.
An mHealth app usability questionnaire (MAUQ) was designed by the research team based on a number of existing questionnaires used in previous mobile app usability studies, especially the well-validated questionnaires. MAUQ, SUS, and PSSUQ were then used to evaluate the usability of two mHealth apps: an interactive mHealth app and a standalone mHealth app. The reliability and validity of the new questionnaire were evaluated. The correlation coefficients among MAUQ, SUS, and PSSUQ were calculated.
In this study, 128 study participants provided responses to the questionnaire statements. Psychometric analysis indicated that the MAUQ has three subscales and their internal consistency reliability is high. The relevant subscales correlated well with the subscales of the PSSUQ. The overall scale also strongly correlated with the PSSUQ and SUS. Four versions of the MAUQ were created in relation to the type of app (interactive or standalone) and target user of the app (patient or provider). A website has been created to make it convenient for mHealth app developers to use this new questionnaire in order to assess the usability of their mHealth apps.
The newly created mHealth app usability questionnaire-MAUQ-has the reliability and validity required to assess mHealth app usability.
移动健康 (mHealth) 应用程序创建后，在向公众发布之前，评估应用程序的可用性是一个重要步骤。有多种方法可以进行可用性研究，其中一种是通过可用性问卷收集目标用户的反馈。不同的团体使用不同的问卷来评估 mHealth 应用程序的可用性：常用的问卷是系统可用性量表 (SUS) 和使用后系统可用性问卷 (PSSUQ)。然而，SUS 和 PSSUQ 并不是专门为评估 mHealth 应用程序的可用性而设计的。自写问卷也常用于评估 mHealth 应用程序的可用性，但尚未经过验证。
本项目的目标是开发和验证一种新的 mHealth 应用程序可用性问卷。
研究团队根据之前移动应用程序可用性研究中使用的一些现有问卷（特别是经过良好验证的问卷）设计了 mHealth 应用程序可用性问卷 (MAUQ)。然后使用 MAUQ、SUS 和 PSSUQ 评估两个 mHealth 应用程序的可用性：一个交互式 mHealth 应用程序和一个独立的 mHealth 应用程序。评估了新问卷的可靠性和有效性。计算了 MAUQ、SUS 和 PSSUQ 之间的相关系数。
在这项研究中，128 名研究参与者对问卷陈述做出了回应。心理测量分析表明，MAUQ 有三个分量表，其内部一致性信度较高。相关分量表与 PSSUQ 的分量表密切相关。总体量表也与 PSSUQ 和 SUS 强烈相关。根据应用程序的类型（交互式或独立式）和应用程序的目标用户（患者或提供者），创建了四个版本的 MAUQ。为了方便 mHealth 应用程序开发人员使用这个新问卷来评估他们的 mHealth 应用程序的可用性，创建了一个网站。
新创建的 mHealth 应用程序可用性问卷-MAUQ-具有评估 mHealth 应用程序可用性所需的可靠性和有效性。
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