Youn Jong Chul, Kim Ki Woong, Lee Dong Young, Jhoo Jin Hyeong, Lee Seok Bum, Park Joon Hyuk, Choi Eun Ae, Choe Jin Yeong, Jeong Ji Woon, Choo Il Han, Woo Jong Inn
Department of Neuropsychiatry, Kyunggi Provincial Hospital for the Elderly, Yongin, Korea.
Dement Geriatr Cogn Disord. 2009;27(4):310-7. doi: 10.1159/000205512. Epub 2009 Mar 2.
We aimed to evaluate the psychometric properties of the Subjective Memory Complaints Questionnaire (SMCQ).
The reliability of the SMCQ was evaluated by testing its internal consistency and test-retest reliability. Pearson correlation analyses were performed to assess the concurrent validity. Confirmatory factor analysis was used to evaluate the construct validity. Diagnostic ability for dementia was tested with receiver operator characteristic curve analyses.
Cronbach's alpha coefficient and intraclass correlation coefficients of the SMCQ were 0.864 and 0.828 (p < 0.001), respectively. The SMCQ scores were significantly correlated with the scores on Camdex Memory Complaint Questionnaire, Seoul Informant Report Questionnaire for Dementia and cognitive tests from the CERAD (Consortium to Establish a Registry for Alzheimer's Disease) neuropsychological test battery (p < 0.01). The results of confirmatory factor analyses confirmed that the SMCQ consisted of subjective memory complaints (SMC) for general memory and for everyday memory. The SMCQ score discriminated well between nondemented elderly without dementia and those with dementia (p < 0.01). The area under the curve value of the SMCQ was 0.84, indicating that it had high diagnostic ability.
The SMCQ was found to be a brief, reliable and valid questionnaire for evaluating SMC. It might be useful for evaluating the cognition of elderly subjects when reliable informants are not available.
我们旨在评估主观记忆障碍问卷（SMCQ）的心理测量特性。
通过测试其内部一致性和重测信度来评估SMCQ的信度。进行Pearson相关分析以评估同时效度。采用验证性因素分析来评估结构效度。使用受试者工作特征曲线分析来测试痴呆的诊断能力。
SMCQ的Cronbach's alpha系数和组内相关系数分别为0.864和0.828（p < 0.001）。SMCQ得分与Camdex记忆障碍问卷、首尔痴呆知情者报告问卷以及CERAD（阿尔茨海默病注册协会）神经心理测试组的认知测试得分显著相关（p < 0.01）。验证性因素分析结果证实，SMCQ由一般记忆和日常记忆的主观记忆障碍（SMC）组成。SMCQ得分在无痴呆的非痴呆老年人和痴呆患者之间有良好的区分度（p < 0.01）。SMCQ的曲线下面积值为0.84，表明其具有较高的诊断能力。
发现SMCQ是一种用于评估SMC的简短、可靠且有效的问卷。当没有可靠的知情者时，它可能有助于评估老年受试者的认知情况。
