For Whom Does It Work? Moderators of Outcome on the Effect of a Transdiagnostic Internet-Based Maintenance Treatment After Inpatient Psychotherapy: Randomized Controlled Trial

David Daniel Ebert   ^{1, 2} , PhD ;   Mario Gollwitzer   ³ , PhD ;   Heleen Riper   ^{1, 4} , PhD ;   Pim Cuijpers   ^{1, 4} , PhD ;   Harald Baumeister   ^{5, 6} , PhD ;   Matthias Berking   ^{1, 2} , PhD

¹ Innovation Incubator, Division Health-Training.Online, Leuphana University Lueneburg, Lüneburg, Germany

² Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps University of Marburg, Marburg, Germany

³ Division of Methodology and Social Psychology, Department of Psychology, Philipps University of Marburg, Marburg, Germany

⁴ Department of Clinical Psychology & EMGO Institute, VU Amsterdam, Amsterdam, Netherlands

⁵ Department of Medical Psychology and Medical Sociology, Faculty of Medicine, University of Freiburg, Freiburg, Germany

⁶ Department of Rehabilitation Psychology and Psychotherapy, Institute of Psychology, University of Freiburg, Freiburg, Germany