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- Title
Factor structure and invariance of the Quality of Life in Alzheimer's Disease (QoL-AD) Scale.
- Authors
Revell, Andrew J; Caskie, Grace I L; Willis, Sherry L; Schaie, K Warner
- Abstract
The factor structure and factorial invariance of the Quality of Life in Alzheimer's Disease (QoL-AD) Scale was investigated in a sample of 653 nondemented, community-dwelling older adults, ages 57 to 95 years (M = 71.62, SD = 8.86), from the Seattle Longitudinal Study. The total sample was split into two random halves to explore and confirm the structure of the QoL-AD. Confirmatory factor analyses indicated better fit for a three-factor solution than one- or two-factor solutions. Weak factorial invariance was found for the three-factor solution (Physical, Social, and Psychological Well-being) across age group and gender. These findings may help to establish a baseline quality of life before the onset of any noticeable AD symptoms.
- Publication
Experimental aging research, 2009, Vol 35, Issue 2, p250
- ISSN
1096-4657
- Publication type
Journal Article
- DOI
10.1080/03610730902720521