Psychometric Properties Under Exploratory Factor Analysis, Confirmatory Factor Analysis, Measurement Invariance, and Item Response Theory Models of Functional Activities Questionnaire (10-Items) Among Iranian Older Adults.
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Abstract
Background/objective: This study aims to evaluate the Functional Activities Questionnaire (FAQ; 10 items) for assessing the quality of daily living activities among older adults in Iran.
Methods: A total of 680 participants completed the Persian version of FAQ. We used the Rasch partial credit model, exploratory factor analysis, confirmatory factor analysis, and receiver operating characteristic analysis to evaluate the psychometric properties of the FAQ among Iranian older adults.
Results: The findings from exploratory factor analysis, confirmatory factor analysis, and item response theory analysis supported the usefulness of the Persian version of the FAQ to be used in Iran. The one-factor model of the FAQ exhibited strong internal consistency, as evidenced by McDonald's omega (≥0.75), Factor Determinacy Index (≥0.8), and Overall Reliability of Fully-Informative prior Oblique Nonequivalent Anchor Parameter scores index (≥0.8). In addition, we observed measurement invariance and consistent response patterns for all items in a logical sequence, indicating the good internal consistency of the FAQ relevance.
Conclusion: Persian version of FAQ-10 items is a valid and reliable instrument for measuring daily living activities among Iranian older adults. Significance/Implications: The FAQ will be a practical tool for measuring activities of daily living in community-based settings as part of comprehensive geriatric assessment in older adults.
期刊介绍：
The Journal of Aging and Physical Activity (JAPA) is a multidisciplinary journal that publishes peer-reviewed original research reports, scholarly reviews, and professional-application articles on the relationship between physical activity and the aging process. The journal encourages the submission of articles that can contribute to an understanding of (a) the impact of physical activity on physiological, psychological, and social aspects of older adults and (b) the effect of advancing age or the aging process on physical activity among older adults.
In addition to publishing research reports and reviews, JAPA publishes articles that examine the development, implementation, and evaluation of physical activity programs among older adults. Articles from the biological, behavioral, and social sciences, as well as from fields such as medicine, clinical psychology, physical and recreational therapy, health, physical education, and recreation, are appropriate for the journal. Studies using animal models do not fit within our mission statement and should be submitted elsewhere.
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