Effectiveness of a Smartphone App With a Wearable Activity Tracker in Preventing the Recurrence of Mood Disorders: Prospective Case-Control Study

Chul-Hyun Cho   ^{1, 2, 3 *} , MD, PhD ;   Taek Lee   ^{4 *} , PhD ;   Jung-Been Lee   ⁵ , MS ;   Ju Yeon Seo   ^{3, 6} , MS ;   Hee-Jung Jee   ⁷ , PhD ;   Serhim Son   ⁷ , MS ;   Hyonggin An   ⁷ , PhD ;   Leen Kim   ³ , MD, PhD ;   Heon-Jeong Lee   ^{3, 6} , MD, PhD

¹ Department of Psychiatry, College of Medicine, Chungnam National University, Daejeon, Republic of Korea

² Department of Psychiatry, Chungnam National University Sejong Hospital, Sejong, Republic of Korea

³ Korea University Chronobiology Institute, Seoul, Republic of Korea

⁴ Department of Convergence Security Engineering, College of Knowledge-based Services Engineering, Sungshin Women's University, Seoul, Republic of Korea

⁵ Department of Computer Science, Korea University College of Information, Seoul, Republic of Korea

⁶ Department of Psychiatry, Korea University College of Medicine, Seoul, Republic of Korea

⁷ Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea

*these authors contributed equally