Effects of Smartphone-Based Stress Management on Improving Work Engagement Among Nurses in Vietnam: Secondary Analysis of a Three-Arm Randomized Controlled Trial

Natsu Sasaki   ¹ , MD ;   Kotaro Imamura   ¹ , PhD ;   Thuy Thi Thu Tran   ² , MSc ;   Huong Thanh Nguyen   ³ , PhD ;   Kazuto Kuribayashi   ¹ ;   Asuka Sakuraya   ⁴ , PhD ;   Thu Minh Bui   ⁵ , MNSc ;   Quynh Thuy Nguyen   ² , PhD ;   Nga Thi Nguyen   ³ , MPH ;   Giang Thi Huong Nguyen   ⁵ , MNSc ;   Melvyn Weibin Zhang   ⁶ , MBBS ;   Harry Minas   ⁷ , FRANZCP ;   Yuki Sekiya   ¹ , PhD ;   Kazuhiro Watanabe   ¹ , PhD ;   Akizumi Tsutsumi   ⁸ , PhD ;   Akihito Shimazu   ⁹ , PhD ;   Norito Kawakami   ¹ , MD, PhD

¹ Department of Mental Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

² Department of Occupational Health and Safety, Faculty of Environmental and Occupational Health, Hanoi University of Public Health, Hanoi, Vietnam

³ Faculty of Social Sciences—Behavior and Health Education, Hanoi University of Public Health, Hanoi, Vietnam

⁴ Department of Public Health, Tokyo Women's Medical University, Tokyo, Japan

⁵ Nursing Office, Bach Mai Hospital, Hanoi, Vietnam

⁶ National Addiction Management Service, Institute of Mental Health, Singapore, Singapore

⁷ Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Australia

⁸ Department of Public Health, Kitasato University School of Medicine, Sagamihara, Japan

⁹ Faculty of Policy Management, Keio University, Kanagawa, Japan