Structural validity
Frailty
Two CFA models were estimated in both community-dwelling and institutionalized older adults. These models were: a one-factor solution (frailty); and a three-factor solution with the three frailty domains: physical (items 1–8), psychological (items 9–12), and social (items 13–15).The one-factor solution had a poor fit: Final confirmatory factor analysis (CFA) standardized parameter estimates for the Tilburg Frailty Indicator in community-dwelling and institutionalized older adults