Adler Efrat, Resnick Barbara
University of Maryland School of Nursing, Baltimore, MD 21201-1579, USA.
West J Nurs Res. 2010 Aug;32(5):686-704. doi: 10.1177/0193945909360780.
The purpose of this study was to test the reliability and validity of the Dementia Quality of Life (DQOL) in a sample of 486 residents from 12 nursing homes in the greater Baltimore area. There was some evidence of validity of the DQOL based on confirmatory factor analysis and Rasch model testing and criterion-related validity. Reliability of the DQOL was somewhat supported in this study based on internal consistency and test-retest reliability. Alpha coefficients and R(2) estimations were generally low across all of the subscales. Despite these findings, the subscale scores remained consistent over a 12-month period. The use of the single-item question about QOL may not be an accurate reflection of QOL among nursing home residents. These findings provide additional information about the psychometric properties of the DQOL and offer some recommendations for revisions in the measure to optimally measure QOL in nursing home residents.
本研究的目的是在巴尔的摩大区12家养老院的486名居民样本中测试痴呆症生活质量量表（DQOL）的信度和效度。基于验证性因素分析、拉施模型测试和效标关联效度，有证据表明DQOL具有一定效度。本研究基于内部一致性和重测信度，一定程度上支持了DQOL的信度。所有子量表的阿尔法系数和R(2)估计值总体较低。尽管有这些发现，但子量表得分在12个月期间保持一致。使用关于生活质量的单项问题可能无法准确反映养老院居民的生活质量。这些发现提供了关于DQOL心理测量特性的更多信息，并为修订该量表以最佳地测量养老院居民的生活质量提供了一些建议。
