Note. Standardized betas are reported. Model 1 describes the association between age and PGCMS scores using dummy variables for each age group. Model 2 includes additionally sociodemographic variables. Model 3 includes also the social variables, and Model 4 includes additionally the health-related variables. aReference category. PGCMS: Philadelphia Geriatric Center Morale Scale; IADL: Instrumental Activities of Daily Living; PADL: Personal Activities of Daily Living. , , and .