Engagement With a Relaxation and Mindfulness Mobile App Among People With Cancer: Exploratory Analysis of Use Data and Self-Reports From a Randomized Controlled Trial

Sonja Schläpfer   ¹ , MSc ;   Fabian Schneider   ² , BSc ;   Prabhakaran Santhanam   ² , MSc ;   Manuela Eicher   ^{3, 4} , Prof Dr ;   Tobias Kowatsch   ^{2, 5, 6} , Prof Dr ;   Claudia M Witt   ¹ , MBA, Prof Dr Med ;   Jürgen Barth   ¹ , PhD

¹ Institute for Complementary and Integrative Medicine, University Hospital Zurich and University of Zurich, Zurich, Switzerland

² Centre for Digital Health Interventions, Department of Management, Technology, and Economics, ETH Zurich, Zurich, Switzerland

³ Institute of Higher Education and Research in Healthcare, Faculty of Biology and Medicine, University of Lausanne and Lausanne University Hospital, Lausanne, Switzerland

⁴ Department of Oncology, Lausanne University Hospital, Lausanne, Switzerland

⁵ Institute for Implementation Science in Health Care, University of Zurich, Zurich, Switzerland

⁶ School of Medicine, University of St.Gallen, St.Gallen, Switzerland