TY - JOUR AU - Perski, Olga AU - Naughton, Felix AU - Garnett, Claire AU - Blandford, Ann AU - Beard, Emma AU - West, Robert AU - Michie, Susan PY - 2019 DA - 2019/10/2 TI -心理和应用相关变量的每日波动是否预测与酒精减少应用的互动?一系列N-Of-1的研究KW -应用程序KW -行为改变KW -过度饮酒KW -参与KW -移动健康KW - N-Of-1 KW -时间序列分析AB -背景:以前的研究已经确定了心理和智能手机应用程序相关的预测因素在群体层面上对酒精减少应用程序的参与。然而，促进参与的策略需要在个人层面上有效。至于群体层面的投入预测是否也能预测个人，目前还缺乏证据。目的:本研究的目的是检查(1)收到提醒，(2)减少酒精的动机，(3)应用程序的感知有用性，(4)酒精消费量，(5)感知缺乏时间的每日波动是否预测了使用酒精减少应用程序的频率和数量的个人变异。方法:我们进行了一系列观察性N-of-1研究。通过生态瞬时评估每天测量两次预测变量，持续28天。结果变量是通过自动记录参与者的应用程序屏幕视图来测量的。共有9名伦敦的成年人参加了这项研究，他们酗酒过度，并愿意设定一个减少饮酒的目标。使用广义可加性混合模型分别分析每个参与者的数据集，以得出预测因子和结果变量之间的个人关联的发生率比(IRRs)。使用专题分析分析的述职采访，用于将调查结果置于背景中。 Results: Predictors of the frequency and amount of engagement differed between individuals, and for the variables 'perceived usefulness of the app' and 'perceived lack of time', the direction of associations also differed between individuals. The most consistent predictors of within-person variability in the frequency of engagement were the receipt of a daily reminder (IRR=1.80-3.88; P<.05) and perceived usefulness of the app (IRR=0.82-1.42; P<.05). The most consistent predictors of within-person variability in the amount of engagement were motivation to reduce alcohol (IRR=1.67-3.45; P<.05) and perceived usefulness of the app (IRR=0.52-137.32; P<.05). Conclusions: The utility of the selected psychological and app-related variables in predicting the frequency and amount of engagement with an alcohol reduction app differed at the individual level. This highlights that key within-person associations may be masked in group-level designs and suggests that different strategies to promote engagement may be required for different individuals. SN - 2291-5222 UR - https://mhealth.www.mybigtv.com/2019/10/e14098 UR - https://doi.org/10.2196/14098 UR - http://www.ncbi.nlm.nih.gov/pubmed/31579022 DO - 10.2196/14098 ID - info:doi/10.2196/14098 ER -