Screening for frequent hospitalization risk among community-dwelling older adult between 2016 and 2023: machine learning-driven item selection, scoring system development, and prospective validation - Leung, Eman; Guan, Jingjing; Zhang, Qingpeng; Ching, Chun Cheung; Yee, Hiliary; Liu, Yilin; Ng, Hang Sau; Xu, Richard; Tsang, Hector Wing Hong; Lee, Albert; Chen, Frank Youhua (Frontiers in Public Health, 2024)