J Korean Neurol Assoc > Volume 20(2); 2002 > Article

Journal of the Korean Neurological Association 2002;20(2): 135-141.

Korean Dementia Screening Questionnaire (KDSQ)의 개발과 타당도 및 신뢰도의 평가

양동원 , 조비룡 최진영 김상윤 김범생

"가톨릭대학교 의과대학 신경과학교실, 서울대학교 의과대학 가정의학과교실 서울대학교 의과대학 심리학과, 서울대학교 의과대학 신경과학교실"

"The Development and Validation of Korean Dementia Screening Questionnaire (KDSQ)"

Dong Won Yang

"Department of Neurology, College of Medicine, Catholic University of Korea Department of Family Medicine& neurology, Seoul National University College of Medicine, Department of Psychology, Seoul National University"

Abstract

"Background : Dementia Screening Questionnaire is sensitive to detect early dementia patients and is not influenced by age and educational level. We conducted a case-control study to assess the validity and reliability of the Korean Dementia Screening Questionnaire (KDSQ) for the diagnosis of early dementia. Methods : We developed KDSQ in a semi-structured manner with the questionnaire of 15 items about cognitive dysfunctions and 5 items of ischemic and depression scales respectively to evaluate the possibility of vascular dementia and degree of depression. It was administrated to informants of 72 dementia patients (39 Alzheimer s disease, 33 vascular dementia) with Clinical Dementia Rating (CDR) scales of 0.5, or 1.0 and to those of 66 hospital control subjects. Test-retest data for the KDSQ were obtained from informants within a time interval of 20.82 days. Results : The KDSQ was not influenced by education level, age, or sex. KDSQ score correlated with the K-MMSE (r=-0.75) and Short form Samsung Dementia Questionnaire (r=0.80). The area under the receiver operating characteristic curve for the KDSQ was 88.9% (S.E.=0.028). KDSQ depression score was correlated with Geriatric Depression Scale (r=0.34). With respect to a diagnosis of dementia, the KDSQ (cut-off point 6) had a sensitivity of 79% and a specificity of 80%. The KDSQ was found to have a high test-retest reliability (r=0.81) Conclusions : The KDSQ has high validity and reliability for the diagnosis of early dementias. It may be a useful tool to screen early stage of dementias.Key Words : Dementia, Screening, Questionnaire, Alzheimer s disease, Vascular dementia"