Psychometric properties of the World Health Organization WHOQOL-AGE Scale in Singapore

Rachael Zhi Yi Lee (), Winson Fu Zun Yang (), Rathi Mahendran () and Lidia Suárez ()
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Rachael Zhi Yi Lee: James Cook University
Winson Fu Zun Yang: Texas Tech University
Rathi Mahendran: National University of Singapore
Lidia Suárez: James Cook University

European Journal of Ageing, 2024, vol. 21, issue 1, No 10, 11 pages

Abstract: Abstract WHOQOL-AGE is a promising quality of life (QOL) tool that has not been fully validated in Asia. The present study aimed to verify its factor structure and psychometric properties among community-dwelling older adults in Singapore. This study was cross-sectional and used data (N = 593) from the Community Health and Intergenerational study that interviewed older adults between 2018 and 2021. Confirmatory factor analysis (CFA) was used to examine the factor structure of the WHOQOL-AGE, and Cronbach’s alpha coefficients were employed to examine internal consistency. Spearman’s rho correlations coefficients between WHOQOL-AGE and other related scales (Satisfaction with Life and the Friendship) examined convergent validity. A Pearson’s correlation coefficient between WHOQOL-AGE and compassion scale examined discriminant validity. An independent t test was used to demonstrate known-groups validity, examining differences in QOL scores between individuals with and without chronic medical conditions. Findings supported a bifactor model with more satisfactory goodness-of-fit indices than the original two-factor model and the two-correlated factor model. WHOQOL-AGE showed adequate internal consistency (Cronbach’s alpha coefficients > .70). Good convergent validity was demonstrated by moderate-to-large correlations between WHOQOL-AGE and satisfaction with life (rs = .54) as well as social connectedness (rs = .33). Discriminant validity was shown by low correlations between WHOQOL-AGE and compassion (r = .19). Findings also indicated good known-groups validity (p

Keywords: Quality of life; WHOQOL-AGE; Asia; Psychometrics; Confirmatory factor analysis (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10433-024-00803-3

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