Characteristics of the Study Cohort.

*Multidimensional Prognostic Index (MPI) aggregated six domains (personal and instrumental activities of daily living, cognitive function, illness severity and comorbidity, the number of medications, co-habitation status). ǂA total follow-up time for mortality of a maximum of 12.8 years and for number of in-hospital days of a maximum of 10.8 years. Characteristics of the Study Cohort.