Abstract
Accurate quality of life assessment is crucial for the development of our understanding of positive ageing. The Older People’s Quality of Life Scale (OPQOL) is a measure developed for use with older adult samples; however, its factor structure remains unclear and measurement consistency across population subgroups has not yet been confirmed. 432 Australian older adults aged 65+ completed the OPQOL as part of a telephone survey. An exploratory factor analysis (EFA; Mplus) was conducted to clarify the factor structure, while confirmatory factor analyses (CFA) were run to confirm measurement invariance across age and gender subgroups. Application of a CFA to the original 32-item OPQOL yielded poor model fit. A subsequent EFA suggested a six-factor solution incorporating 23 of the original items. Measurement invariance of the proposed model was determined via a series of CFAs that demonstrated acceptable-to-good model fit and supported configural, metric and scalar invariance across both age and gender. A shorter version of the OPQOL that provides both a total and subscale scores is proposed, but the model requires further confirmation via CFA in other English-speaking samples. This version of the OPQOL demonstrates consistency of measurement across age and gender, which suggests that scores can be meaningfully compared between groups.
Original language | English |
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Pages (from-to) | 12732-12742 |
Number of pages | 11 |
Journal | Current Psychology |
Volume | 42 |
Issue number | 15 |
Early online date | 7 Jan 2022 |
DOIs | |
Publication status | Published - May 2023 |
Keywords
- Factor analysis
- Factorial invariance
- Older adults
- Quality of life