Development and external validation of an interpretable machine learning model for predicting 4-year incident frailty in middle-aged and older adults with arthritis: A retrospective longitudinal study based on the CHARLS and KLoSA cohorts
Objective Based on retrospective longitudinal data from the China Health and Retirement Longitudinal Study (CHARLS) and Korean Longitudinal Study of Ageing (KLoSA) cohorts, we developed and externally validated an interpretable machine learning model to predict 4-year incident frailty in middle-aged and older adults wi...