Satisfying Product Features of a Fall Prevention Smartphone App and Potential Users’ Willingness to Pay: Web-Based Survey Among Older Adults

Peter Rasche   ¹ , MSc ;   Alexander Mertens   ¹ , Dr Ing, Dr rer medic ;   Christopher Brandl   ¹ , Dr Ing ;   Shan Liu   ² , SD, MD ;   Benjamin Buecking   ³ , Dr med ;   Christopher Bliemel   ³ , Priv Doz, Dr med ;   Klemens Horst   ⁴ , Dr med, MHBA ;   Christian David Weber   ⁴ , Dr med ;   Philipp Lichte   ⁴ , Priv Doz, Dr med ;   Matthias Knobe   ⁴ , MME, MHBA, Priv Doz, Dr med

¹ Institute of Industrial Engineering and Ergonomics, Department of Mechanical Engineering, RWTH Aachen University, Aachen, Germany

² Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA, United States

³ Center for Orthopaedics and Trauma Surgery, University Hospital of Giessen and Marburg, Marburg, Germany

⁴ Department of Orthopaedic Trauma, University of Aachen Medical Center, RWTH Aachen University, Aachen, Germany