Mobile App Intervention of a Randomized Controlled Trial for Patients With Obesity and Those Who Are Overweight in General Practice: User Engagement Analysis Quantitative Study

Vera Helen Buss   ^{1 *} , PhD ;   Margo Barr   ^{1 *} , PhD ;   Sharon M Parker   ^{1 *} , MPH ;   Alamgir Kabir   ^{1 *} , PhD ;   Annie Y S Lau   ^{2 *} , PhD ;   Siaw-Teng Liaw   ^{3 *} , PhD ;   Nigel Stocks   ^{4 *} , MD ;   Mark F Harris   ^{1 *} , MD

¹ Centre for Primary Health Care and Equity, University of New South Wales, Sydney, Australia

² Australian Institute of Health Innovation, Macquarie University, Sydney, Australia

³ School of Population Health, University of New South Wales, Sydney, Australia

⁴ Adelaide Medical School, University of Adelaide, Adelaide, Australia

*all authors contributed equally