Comprehensive Evaluation of the Functional Activities Questionnaire (FAQ) and Its Reliability and Validity.

ABSTRACT: The Functional Activities Questionnaire (FAQ) is a collateral-report measure of difficulties in activities of daily living. Despite its widespread use, psychometric analyses have been limited in scope, piecemeal across samples, and limited primarily to classical test theory. This article consolidated and expanded psychometric analyses using tools from generalizability and item response theories among 27,916 individuals from the National Alzheimer's Coordinating Center database who completed the FAQ. Reliability was evaluated with internal consistency, test-retest, and generalizability analyses. Validity was assessed via convergence with neurocognitive measures, classification accuracy with impairment stage, and confirmatory factor and item response theory analyses. Demographics did not imp

SUBMITTER: Gonzalez DA 

PROVIDER: S-EPMC8339133 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature