Determinants of the Uptake and Frequency of Use of a Web Portal Digital Health Intervention in Patients With Type 2 Diabetes and/or Coronary Heart Disease: Secondary Analysis of a Randomized Controlled Trial

Maximilian Scholl   ¹ , MA ;   Claas Lendt   ^{1, 2} , MSc ;   Sebastian Appelbaum   ^{3, 4} , MSc ;   Bianca Biallas   ¹ , PhD ;   Katja Brenk-Franz   ⁵ , PhD ;   Chloé Chermette   ⁶ , PhD ;   Friederike Frank   ^{7, 8} , MSc ;   Angeli Gawlik   ⁶ , PhD ;   Lisa Giesen   ⁹ , PhD ;   Martina Heßbrügge   ¹⁰ , MD ;   Lucas Küppers   ¹¹ , MD ;   Larisa Pilic   ^{12, 13} , MSc ;   Marcus Redaèlli   ⁹ , MD ;   Lara Schneider   ¹⁴ , BA ;   Frank Vitinius   ^{14, 15} , MD ;   Stefan Wilm   ¹⁶ , MD ;   Uwe Konerding   ^{3, 4} , PhD

¹ Institute of Movement Therapy and Movement-oriented Prevention and Rehabilitation, Section I, German Sports University Cologne, Cologne, Germany

² Department of Epidemiology and Preventive Medicine, University of Regensburg, Regensburg, Germany

³ Department of Psychology and Psychotherapy, Witten/Herdecke University, Witten, Germany

⁴ Trimberg Research Academy, University of Bamberg, Bamberg, Germany

⁵ Institute of Psychosocial Medicine, Psychotherapy and Psychooncology, Jena University Hospital, Jena, Germany

⁶ Institute of Psychology, Section I: Health and Social Psychology, German Sport University Cologne, Cologne, Germany

⁷ Institute for Digitalization and General Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany

⁸ Center for Rare Diseases Aachen (ZSEA), Medical Faculty, RWTH Aachen University, Aachen, Germany

⁹ Institute of Health Economics and Clinical Epidemiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany

¹⁰ Institute of General Practice, University of Duisburg-Essen, Essen, Germany

¹¹ Institute of Family Medicine and General Practice, University of Bonn, Bonn, Germany

¹² Institute of General Practice, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany

¹³ Department of Child and Adolescent Psychiatry, Psychosomatic Medicine and Psychotherapy, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany

¹⁴ Department of Psychosomatics and Psychotherapy, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany

¹⁵ Department of Psychosomatic Medicine, Robert Bosch Hospital, Stuttgart, Germany

¹⁶ Institute of General Practice, Centre for Health and Society, Medical Faculty and University Hospital, Heinrich Heine University Düsseldorf, Düsseldorf, Germany