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首页> 外文期刊>JMIR public health and surveillance. >Application usage and usability impressions of a barcode-based digital contact tracing platform for COVID-19: Survey study
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Application usage and usability impressions of a barcode-based digital contact tracing platform for COVID-19: Survey study

机译：Covid-19基于条形码的数字联系方式的应用使用和可用性印象：调查研究

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BACKGROUND:The novel coronavirus (COVID-19) has drastically changed life in the United States, as the country has recorded over 23 million cases and 383,000 deaths to date. In the lead-up to widespread vaccine deployment, testing and surveillance are critical for detecting and stopping possible routes of transmission. Contact tracing has become an important surveillance measure for COVID-19 control in the United States, and mobile health interventions have found increased prominence in this space.OBJECTIVE:The aim of this study was to investigate the use and usability of MyCOVIDKey, a mobile-based web application to assist COVID-19 contact tracing efforts during the 6-week pilot period.METHODS:A six-week study was conducted on the Vanderbilt University campus in Nashville, TN. The population, consisting primarily of graduate students, postdoctoral researchers, and faculty in the Chemistry Department at Vanderbilt University, was asked to use the MyCOVIDKey web application during the course of the study period. Paradata was collected as users engaged with the MyCOVIDKey web application. At the end of the study, all participants were asked to report on their user experience in a survey, and the results were analyzed in the context of the user paradata.RESULTS:MyCOVIDKey enrolled 45 users during the pilot period. An analysis of their enrollment suggests that initial recruiting efforts were effective, however participant recruitment and engagement efforts at the mid-point of the study were less effective. Application usage paralleled the number of users, indicating incentives were useful for recruiting new sign-ups, but did not result in users trying to artificially inflate their usage as a result of prize offers. Time-to-completion of key tasks were low, indicating that the main features of the application could be quickly used. Of the 45 users, 30 provided feedback through a post-pilot survey with 26 (58%) completing it in its entirety. The MyCOVIDKey app as a whole was rated 70.0 on the System Usability Scale, indicating that it performed above the accepted threshold for usability. When the key-in and self-assessment features were examined on their own, it was found that they individually crossed the same thresholds for acceptable usability, but that the key-in feature had a higher margin for improvements.CONCLUSIONS:The MyCOVIDKey application was found overall to be a useful tool for COVID-19 contact tracing in a university setting. Most users suggested simple-to-implement improvements, such as replacing the web application framework with a native application format, or changing the placement of the scanner within the app workflow. After these updates, this tool could readily be deployed and could easily be adapted for other settings across the country. The need for digital contact tracing tools is becoming increasingly apparent, particularly as case numbers continue to increase while more businesses begin to re-open.
机译：背景：新型冠状病毒（Covid-19）在美国大大改变了生活，因为该国录得超过2300万件案件和383,000人死亡。在引入广泛的疫苗部署中，测试和监测对于检测和停止可能的传输途径是至关重要的。联系跟踪已成为美国Covid-19控制的重要监视措施，移动卫生干预措施在这一空间中发现了增加的突出。目的：这项研究的目的是调查MyCovidkey的使用和可用性 - 基于Web申请，以帮助Covid-19在6周的试点期间的联系跟踪努力。方法：在TN的纳什维尔Vanderbilt大学校园进行了六周的研究。主要是研究生，博士后研究人员和Vanderbilt University的化学系的博士学位和教师组成的人口，并在研究期间使用MyCovidkey Web应用程序。根据与MyCovidkey Web应用程序的用户一起收集Paradata。在研究结束时，所有参与者都被要求报告他们在调查中的用户体验，并在用户帕拉多的上下文中分析结果。结果：MyCovidkey在试点期间注册了45个用户。对他们的入学人员的分析表明，初步招聘努力是有效的，但在研究中期的参与者招聘和参与努力较小。应用程序使用并联用户数量，指示激励措施对于招募新注册是有用的，但没有导致用户因奖品优惠作为人为地造成其使用的用户。完成关键任务的时间较低，表明可以快速使用应用程序的主要特征。在45个用户中，30个通过后飞行员调查提供了26（58％）的全部内容的反馈。 MyCovidKey应用程序整个系统可用性缩放为70.0，表明它在上面执行了可用性的接受阈值。当他们自己审查密钥和自我评估功能时，发现它们单独跨越相同的阈值以获得可接受的可用性，但是密钥特征具有更高的改进余量.Conclusions：MyCovidkey应用程序是在大学环境中成为Covid-19联系方式的有用工具。大多数用户建议简单实现的改进，例如用本机应用格式替换Web应用程序框架，或更改应用程序工作流程中的扫描仪的位置。在这些更新之后，可以轻松地部署此工具，并且可以轻松适应全国各地的其他设置。对于数字接触跟踪工具的需求越来越明显，特别是随着案例数字继续增加，而更多企业开始重新开放。

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