Kalfoss Mary H, Low Gail, Molzahn Anita E
Department of Research, Diakonova University College, Linstowsgate 5, 0166 Oslo, Norway.
Faculty of Nursing, University of Alberta, 3rd Floor Clinical Sciences Building, Edmonton, AB Canada T6G 2G3.
Eur J Ageing. 2008 Feb 13;5(1):77. doi: 10.1007/s10433-008-0070-z. eCollection 2008 Mar.
The aim of this study was to examine the validity and reliability of the WHOQOL-BREF, a generic quality of life scale, among older people in Canada and Norway. Very similar data from the Canadian and Norwegian Field Trial data (Canada = 192; Norway, = 469) were analyzed and compared. Higher negatively skewed mean scores were found for all WHOQOL-BREF domains in Canada. For both study samples, missing values were highest for the sex item from the social domain. Ceiling effects were found (Canada = 21; Norway = 11) primarily among items in the physical and environmental domains. In both study samples, a multitrait multimethod procedure indicated items correlated most strongly with their parent domains; however, equally appreciable correlations were observed between physical, psychological, and environmental items ( = 0.33-0.64; < 0.01). The social domain had the lowest internal consistency ( = 0.67 Canada, = 0.55 Norway). Confirmatory factor analyses (CFA) yielded marginal goodness-of-fit between the hypothesized WHOQOL-BREF measurement model and the sample data as well as differing patterns of domain misspecification. Patterns of correlations ( < 0.01) of WHOQOL-BREF domains with WHOQOL-OLD facets, a global QOL item, the SF-12, and the geriatric depression scale provided evidence of convergent and divergent validity. Domain scores also significantly discriminated between health and unhealthy populations and presence of morbidity. Empirical support was found, in part, for the construct validity of the WHOQOL-BREF in older adults. Despite some different patterns found in the CFA, possibly due to cultural or sampling differences, it appears that the instrument is reliable, valid, and facilitates cross-cultural comparisons.
本研究旨在检验世界卫生组织生活质量简表（WHOQOL-BREF），一种通用生活质量量表，在加拿大和挪威老年人中的有效性和可靠性。对来自加拿大和挪威现场试验数据（加拿大=192；挪威=469）的非常相似的数据进行了分析和比较。加拿大所有WHOQOL-BREF领域的负偏态平均得分更高。对于两个研究样本，社会领域的性别项目缺失值最高。天花板效应主要在身体和环境领域的项目中发现（加拿大=21；挪威=11）。在两个研究样本中，多特质多方法程序表明项目与其母领域的相关性最强；然而，在身体、心理和环境项目之间也观察到了相当可观的相关性（=0.33 - 0.64；<0.01）。社会领域的内部一致性最低（加拿大=0.67，挪威=0.55）。验证性因素分析（CFA）得出假设的WHOQOL-BREF测量模型与样本数据之间的拟合优度边际以及领域错误指定的不同模式。WHOQOL-BREF领域与WHOQOL-OLD方面、一个全球生活质量项目、SF-12和老年抑郁量表的相关性模式（<0.01）提供了收敛和发散效度的证据。领域得分在健康和不健康人群以及疾病存在之间也有显著区分。部分地发现了支持WHOQOL-BREF在老年人中结构效度的实证依据。尽管在CFA中发现了一些不同模式，可能是由于文化或抽样差异，但该工具似乎是可靠、有效的，并且便于跨文化比较。
