Published on in Vol 21, No 11 (2019): November

Preprints (earlier versions) of this paper are available at, first published .
User Engagement and Attrition in an App-Based Physical Activity Intervention: Secondary Analysis of a Randomized Controlled Trial

User Engagement and Attrition in an App-Based Physical Activity Intervention: Secondary Analysis of a Randomized Controlled Trial

User Engagement and Attrition in an App-Based Physical Activity Intervention: Secondary Analysis of a Randomized Controlled Trial


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Books/Policy Documents

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  2. Ulmer T, Baldauf M. Human-Computer Interaction. User Experience and Behavior. View
  3. Ögel Aydın S. Handbook of Research on Cross-Disciplinary Uses of Gamification in Organizations. View