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Article History

Accepted: 27 February 2025

First Online: 27 March 2025

Declarations

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: The authors declare no financial or personal relationships with the app company involved in this study. The digital rehabilitation platform used in the digIRENA intervention was publicly tendered and awarded by the Deutsche Rentenversicherung Knappschaft-Bahn-See (DRV KBS). The selection process was conducted independently by DRV KBS and was not influenced by the authors. None of the authors have received funding, compensation, or have any other ties to the app company. The study was financed by the German Federal Ministry of Labor and Social Affairs (Bundesministerium für Arbeit und Soziales). The first author is a doctoral student at the Karlsruhe Institute of Technology, the institution responsible for conducting this study. While DRV KBS financed the rehabilitation interventions as part of a pilot project, the authors’ involvement was limited to evaluating the effectiveness of these interventions. There is no financial dependency or conflict of interest between the authors, KIT, DRV KBS, or the Federal Ministry of Labor and Social Affairs. The study was conducted independently, adhering to rigorous scientific and ethical standards, and no external parties influenced the study design, data analysis, or reporting.

: This study received approval from the Data Protection Officer on March 4, 2019, and from the Ethics Committee of the Karlsruhe Institute of Technology on March 20, 2019. The study was conducted in full compliance with local legislation and institutional ethical guidelines.

: Informed consent was obtained from all individual participants included in the study.