@文章{信息:doi/10.2196/20317，作者=“刘颖杰与陈，陈健雄与林，玉生与陈，辛云与Irianti, Denisa与Jen，丁妮与叶，朱寅与赵，雪莉月霞”，标题=“老年人移动语音添加食品报告的设计与可用性评估:随机对照试验”，期刊=“JMIR Mhealth Uhealth”，年=“2020”，月=“9”，日=“28”，卷=“8”，数=“9”，页=“e20317”，关键词=“语音添加设计”;食品报告;老年人;可用性评估;自动语音识别;移动健康;背景:语音技术的进步为日常健康维护相关的应用程序提供了新的可能性。然而，这些技术对老年用户的可用性仍不清楚，需要进一步调查。目的:我们设计并评估了两种创新的移动语音添加的食物摄入报告应用程序，即语音报告(VOR)和语音按钮报告(VBR)。每个应用程序都有一个独特的互动程序来报告食物摄入量。 With VOR, users verbally report the main contents of each dish, while VBR provides both voice and existing touch screen inputs for food intake reporting. The relative usability of the two apps was assessed through the metrics of accuracy, efficiency, and user perception. Methods: The two mobile apps were compared in a head-to-head parallel randomized trial evaluation. A group of 57 adults aged 60-90 years (12 male and 45 female participants) was recruited from a retirement community and randomized into two experimental groups, that is, VOR (n=30) and VBR (n=27) groups. Both groups were tested using the same set of 17 food items including dishes and beverages selected and allocated to present distinct breakfast, lunch, and dinner meals. All participants used a 7-inch tablet computer for the test. The resulting data were analyzed to evaluate reporting accuracy and time efficiency, and the system usability scale (SUS) was used to measure user perception. Results: For eight error types identified in the experiment, the VBR group participants were significantly (P<.001) more error prone owing to the required use of button-tapping actions. The highest error rates in the VOR group were related to incomprehensible reporting speech (28/420, 6.7{\%}), while the highest error rates in the VBR group were related to failure to make required button taps (39/378, 10.3{\%}). The VOR group required significantly (P<.001) less time to complete food reporting. The overall subjective reactions of the two groups based on the SUS surpassed the benchmark and were not significantly different (P=.20). Conclusions: Experimental results showed that VOR outperformed VBR, suggesting that voice-only food input reporting is preferable for elderly users. Voice-added apps offer a potential mechanism for the self-management of dietary intake by elderly users. Our study contributes an evidence-based evaluation of prototype design and selection under a user-centered design model. The results provide a useful reference for selecting optimal user interaction design. Trial Registration: International Standard Randomized Controlled Trial Registry ISRCTN17335889; http://www.isrctn.com/ISRCTN17335889. ", issn="2291-5222", doi="10.2196/20317", url="http://mhealth.www.mybigtv.com/2020/9/e20317/", url="https://doi.org/10.2196/20317", url="http://www.ncbi.nlm.nih.gov/pubmed/32985999" }