Predictors of Engagement, Response to Follow Up, and Extent of Alcohol Reduction in Users of a Smartphone App (Drink Less): Secondary Analysis of a Factorial Randomized Controlled Trial
Predictors of Engagement, Response to Follow Up, and Extent of Alcohol Reduction in Users of a Smartphone App (Drink Less): Secondary Analysis of a Factorial Randomized Controlled Trial
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DOI：
10.2196/11175
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发表时间：
2018-12-01
影响因子：
5
通讯作者：
Brown, Jamie
中科院分区：
文献类型：
--
作者：
Garnett, Claire;Perski, Olga;Brown, Jamie
背景：针对酒精的数字干预可以帮助减少危险和有害的酒精消费。Drink Less应用程序是使用证据和理论开发的，一项析因随机对照试验（RCT）表明，其4个干预模块可能有助于减少饮酒。然而，参与程度低是取得成效的一个重要障碍，对后续行动的反应不高是干预措施评价的一个挑战。研究需要了解哪些因素会影响用户的参与程度，对后续行动的反应以及酒精减少的程度。目的：本研究旨在调查用户特征，参与程度，对后续行动的反应以及基于应用程序的干预措施Drink Less中酒精减少程度之间的关联。这项研究涉及对Drink Less应用程序的析因RCT的二次数据分析。参与者（N=672）年龄在18岁或以上，居住在英国，并且具有酒精使用障碍识别测试得分>7（指示过量饮酒）。在基线时评估社会人口统计学和饮酒特征。在使用的第一个月评估参与度（会话数量、应用程序使用时间、使用天数和查看的可用屏幕百分比）。1个月后测量随访反应和酒精减少程度（过去一周消费量的变化）。结果：年龄（所有未标准化回归系数[B] >. 02，所有P.18，所有P
Background: Digital interventions for alcohol can help achieve reductions in hazardous and harmful alcohol consumption. The Drink Less app was developed using evidence and theory, and a factorial randomized controlled trial (RCT) suggested that 4 of its intervention modules may assist with drinking reduction. However, low engagement is an important barrier to effectiveness, and low response to follow up is a challenge for intervention evaluation. Research is needed to understand what factors influence users' level of engagement, response to follow up, and extent of alcohol reduction.Objective: This study aimed to investigate associations between user characteristics, engagement, response to follow up, and extent of alcohol reduction in an app-based intervention, Drink Less.Methods: This study involved a secondary data analysis of a factorial RCT of the Drink Less app. Participants (N=672) were aged 18 years or older, lived in the United Kingdom, and had an Alcohol Use Disorders Identification Test score >7 (indicative of excessive drinking). Sociodemographic and drinking characteristics were assessed at baseline. Engagement was assessed in the first month of use (number of sessions, time on app, number of days used, and percentage of available screens viewed). Response to follow up and extent of alcohol reduction (change in past week consumption) were measured after 1 month. Associations were assessed using unadjusted and adjusted linear or logistic regression models.Results: Age (all unstandardized regression coefficients [B] >. 02, all P.18, all P