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Reliability and Validity of a Self-rated Analogue Scale for Global Measure of Successful Aging
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https://doi.org/10.1016/j.jagp.2013.09.002Abstract
Objective
Dimension-specific objective measures are criticized for their limited perspective and failure to endorse subjective perceptions by respondents, but the validity and correlates of a subjective global measure of successful aging (SA) are still not well established. We evaluated the reliability and validity of a self-rated analogue scale of global SA in an elderly Singaporean population.Design
Cross-sectional data analysis using a comprehensive questionnaire survey.Participants and setting
489 community-dwelling Singaporeans aged 65 years and over.Measurements
Self-rated SA on an analogue scale from 1 (least successful) to 10 (most successful) was analyzed for its relationship to criterion-based measures of five specific dimensions (physical health and function, mental well-being, social engagement, psychological well-being, and spirituality/religiosity), as well as outcome measures (life satisfaction and quality of life).Results
Self-rated SA was significantly correlated to measures of specific dimensions (standardized β from 0.11 to 0.39), most strongly with psychological functioning (β = 0.391). The five dimension-specific measures together accounted for 16.7% of the variance in self-rated SA. Self-rated SA best predicted life satisfaction (R(2) = 0.26) more than any dimension-specific measure (R(2) from 0.05 to 0.17). Self-rated SA, vis-à-vis dimension-specific measures, was related to a different set of correlates, and was notably independent of chronological age, sex, education, socioeconomic status, and medical comorbidity, but was significantly related to ethnicity.Conclusion
The self-rated analogue scale is a sensitive global measure of SA encompassing a spectrum of underlying dimensions and subjective perspectives and its validity is well supported in this study.Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.
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