sex.category
functional_disability_BADL
functional_disability_IADL
health_perception
hospitalization_in_the_previous_year
falls
Marital_status
Living_arrangement
Income
level_of_physical_activity
depressive_symptoms
code_of_follow_up
death_code_in_follow_up
Follow_up_time_in_months
SPPB_category
SPPB_category_sit_to_stand
SPPB_category_balance