Validation and Reliability of a Smartphone Application for the International Prostate Symptom Score Questionnaire: A Randomized Repeated Measures Crossover Study

Jae Heon Kim   ^{1 *} , MD, PhD ;   Soon-Sun Kwon   ^{2 *} , PhD ;   Sung Ryul Shim   ³ ;   Hwa Yeon Sun   ¹ ;   Young Myoung Ko   ⁴ , PhD ;   Dong-Il Chun   ⁵ , MD, PhD ;   Won Jae Yang   ¹ , MD, PhD ;   Yun Seob Song   ¹ , MD, PhD

¹ Department of Urology, Soonchunhyang University, College of Medicine, Soonchunhyang University Hospital, Seoul, Republic of Korea

² Biomedical Research Institute, Seoul National University Bundang Hospital, Seongnam, Republic of Korea

³ Department of Epidemiology and Medical Informatics, Korea University, Seoul, Republic of Korea

⁴ Department of Industrial and Management Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea

⁵ Department of Orthopaedics, Soonchunhyang University, College of Medicine, Soonchunhyang University Hospital, Seoul, Republic of Korea

*these authors contributed equally