Development and Validation of a Nutritional Frailty Phenotype for Older Adults Based on Risk Prediction Model: Results From a Population-Based Prospective Cohort Study

Malnutrition is generally studied to be involved in outlining hazard frailty trajectories, resulting in adverse outcomes. In view of frailty's multidimensional nature, we aimed to assess the contribution of nutritional items in existing frailty tools to adverse outcomes, and develop and validate a nutritional frailty phenotype based on machine learning.