Assessing Time-Varying Causal Effect Moderation in Mobile Health

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ID: 282115
2016
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Abstract
In mobile health interventions aimed at behavior change and maintenance, treatments are provided in real time to manage current or impending high risk situations or promote healthy behaviors in near real time. Currently there is great scientific interest in developing data analysis approaches to guide the development of mobile interventions. In particular data from mobile health studies might be used to examine effect moderators-i.e., individual characteristics, time-varying context or past treatment response that moderate the effect of current treatment on a subsequent response. This paper introduces a formal definition for moderated effects in terms of potential outcomes, a definition that is particularly suited to mobile interventions, where treatment occasions are numerous, individuals are not always available for treatment, and potential moderators might be influenced by past treatment. Methods for estimating moderated effects are developed and compared. The proposed approach is illustrated using BASICS-Mobile, a smartphone-based intervention designed to curb heavy drinking and smoking among college students.
Reference Key
murphy2016assessing Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Audrey Boruvka; Daniel Almirall; Katie Witkiewitz; Susan A. Murphy
Journal arXiv
Year 2016
DOI
DOI not found
URL
http://arxiv.org/abs/1601.00237v3
Keywords
stat.me

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