Revell Andrew J, Caskie Grace I L, Willis Sherry L, Schaie K Warner
Department of Psychology, University of Massachusetts-Dartmouth, North Dartmouth, Massachusetts 02747-2300, USA.
Exp Aging Res. 2009 Apr-Jun;35(2):250-67. doi: 10.1080/03610730902720521.
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.
在来自西雅图纵向研究的653名年龄在57至95岁（M = 71.62，SD = 8.86）、居住在社区且未患痴呆症的老年人样本中，对阿尔茨海默病生活质量（QoL-AD）量表的因子结构和因子不变性进行了研究。总样本被随机分为两半，以探索和确认QoL-AD的结构。验证性因子分析表明，三因子解决方案比一因子或二因子解决方案的拟合度更好。在年龄组和性别中，发现三因子解决方案（身体、社会和心理健康）具有弱因子不变性。这些发现可能有助于在出现任何明显的AD症状之前建立生活质量基线。
