Validation of the Persian version of the comprehensive frailty assessment instrument plus in community-dwelling older adults

Abstract

This study aimed to examine the validity and reliability of the Persian Version of the Comprehensive Frailty Assessment Instrument Plus (CFAI-Plus) among community-dwelling older adults. It was completed by 340 older adults ≥60 years. The content and face validity were confirmed based on the opinion of the target group and experts. In the exploratory factor analysis, seven factors were extracted, explaining 62.8% of the total variance. Confirmatory factor analysis showed acceptable fit indices (Root Mean Square Error of Approximation = 0.045; Comparative Fit Index = 0.93; Tucker-Lewis Index = 0.92). Internal consistency was adequate for factors (Cronbach's alpha: range 0.47 to 0.88), and the test-retest reliability was acceptable (intra-class correlation coefficient: range 0.76 to 0.92). A higher CFAI-Plus score were found in those who were older, female, less-educated, single, lived alone, and had inadequate income. This study supports the reliability and validity of the Persian CFAI-Plus in community-dwelling older adults.