Department of Occupational Therapy, Centre of Geriatric Medicine and Gerontology Freiburg, Germany.
Eur J Neurol. 2012 Mar;19(3):376-84. doi: 10.1111/j.1468-1331.2011.03561.x. Epub 2011 Oct 15.
To translate the Dementia quality of life instrument (DQoL) into German and assess its construct and concurrent validity in community-dwelling people with mild to moderate dementia.
Dementia quality of life instrument data of two pooled samples (n=287) were analysed regarding ceiling and floor effects, internal consistency, factor reliability and correlations with corresponding scales on quality of life (Quality of Life in Alzheimer's Disease and SF-12), cognition (Mini-Mental State Examination, Alzheimer's Disease Assessment Scale - cognitive), depression (Cornell Scale for Depression in Dementia) and activities of daily living (Interview of Deterioration in Daily Living Activities in Dementia).
We found no floor effects (<2%), minor ceiling effects (1-11%), moderate to good internal consistency (Cronbach's α: 0.6-0.8) and factor reliability (0.6-0.8), moderate correlations with self-rated scales of quality of life (Spearman coefficient: 0.3-0.6) and no or minor correlations with scores for cognition, depression or activities of daily living (r<0.3). The original five-factor model could not be confirmed.
The DQoL can be used in dementia research for assessing positive and negative affect, feelings of belonging and self-esteem. The findings suggest further research to improve the structure of the scales aesthetics, feelings of belonging and self-esteem.
将痴呆症生活质量量表（DQoL）译为德语，并评估其在轻度至中度痴呆症的社区居住人群中的结构和同时效度。
对两个合并样本（n=287）的痴呆症生活质量量表数据进行分析，评估天花板和地板效应、内部一致性、因子可靠性以及与生活质量（阿尔茨海默病生活质量量表和 SF-12）、认知（简易精神状态检查、阿尔茨海默病评估量表-认知）、抑郁（痴呆症中使用的康奈尔抑郁量表）和日常生活活动（痴呆症日常生活活动恶化访谈）相应量表的相关性。
我们发现没有地板效应（<2%），轻微的天花板效应（1-11%），中等至良好的内部一致性（Cronbach's α：0.6-0.8）和因子可靠性（0.6-0.8），与自我评估的生活质量量表中度相关（Spearman 系数：0.3-0.6），与认知、抑郁或日常生活活动的评分无相关性或相关性较小（r<0.3）。无法确认原始的五因素模型。
DQoL 可用于痴呆症研究，以评估积极和消极的影响、归属感和自尊心。研究结果表明，需要进一步研究来改善量表的美学、归属感和自尊心的结构。
