Biology, life sciences Charlson Comorbidity Index Dietary Approaches to Stop Hypertension Quality International Classification of Diseases Research & information: general SARC-F score Vietnam World Health Organization Disability Assessment Schedule II activity of daily living aggressive rehabilitation nutrition body weight body weight gain convalescent rehabilitation diffusion kurtosis imaging diffusion tensor imaging disability energy intake frailty functional recovery health literacy health-related behaviors hemodialysis home-discharge international physical activity questionnaire l-carnitine malnutrition malnutrition risks muscle volume neurite orientation dispersion and density imaging nutritional management