A Web-Based Intervention Using "Five Ways to Wellbeing" to Promote Well-Being and Mental Health: Randomized Controlled Trial

Monica Beer Prydz   ¹ , MS ;   Nikolai Olavi Czajkowski   ^{1, 2} , PhD ;   Maja Eilertsen   ^{1, 2} , MD ;   Espen Røysamb   ^{1, 3} , PhD ;   Ragnhild Bang Nes   ^{1, 2, 4} , PhD

¹ Promenta Research Centre, Department of Psychology, University of Oslo, Oslo, Norway

² Department of Mental Health and Suicide, Norwegian Institute of Public Health, Oslo, Norway

³ Department of Childhood and Families, Norwegian Institute of Public Health, Oslo, Norway

⁴ Department of Philosophy, Classics, and History of Arts and Ideas, University of Oslo, Oslo, Norway