Evaluation of the Feasibility and Acceptability of Perfect Fit, a Virtual Coach–Based mHealth Intervention for Smoking Cessation and Physical Activity in Adults: Mixed Methods Study

Milon H M van Vliet   ^{1, 2} , MSc, PhD ;   Eline Meijer   ^{1, 2} , MSc, PhD ;   Nele Albers   ^{3, 4} , MSc, PhD ;   Kristell M Penfornis   ⁵ , MSc, PhD ;   Walter Baccinelli   ⁶ , MSc, PhD ;   Bouke L Scheltinga   ⁷ , MSc, PhD ;   Roxy A van Eersel   ^{1, 2} , MSc ;   Niels H Chavannes   ^{1, 2} , MD, PhD ;   Anke Versluis   ^{1, 2} , MSc, PhD ;   The Perfect Fit Consortium   ⁸

¹ Department of Public Health and Primary Care, Leiden University Medical Center, Leiden, The Netherlands

² National eHealth Living Lab, Leiden University Medical Center, Leiden, The Netherlands

³ Department of Intelligent Systems, Delft University of Technology, Delft, The Netherlands

⁴ Department of Communication and Cognition, Tilburg University, Tilburg, The Netherlands

⁵ Department of Psychology, Unit Health, Medical, and Neuropsychology, Leiden University, Leiden, The Netherlands

⁶ Netherlands eScience Center, Amsterdam, The Netherlands

⁷ Biomedical Signals and Systems, University of Twente, Enschede, The Netherlands

⁸ See Acknowledgments