Reliability and Validity of a Short Form of the Korean Dementia Screening Questionnaire-Cognition
10.3988/jcn.2020.16.1.145
- Author:
Ahro KIM
1
;
SangYun KIM
;
Kyung Won PARK
;
Kee Hyung PARK
;
Young Chul YOUN
;
Dong Woo LEE
;
Jun Young LEE
;
Jun Hong LEE
;
Jee Hyang JEONG
;
Seong Hye CHOI
;
Hyun Jeong HAN
;
Semi KIM
;
Seunghee NA
;
Misun PARK
;
Hyeon Woo YIM
;
Dong Won YANG
Author Information
1. Department of Neurology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
- Publication Type:Original Article
- From:Journal of Clinical Neurology
2020;16(1):145-153
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND:AND PURPOSE: We aimed to determine the reliability and validity of a short form of the Korean Dementia Screening Questionnaire-Cognition (KDSQ-C) as a screening tool for cognitive dysfunction.
METHODS:This study recruited 420 patients older than 65 years and their informants from 11 hospitals, and categorized the patients into normal cognition, mild cognitive impairment, and dementia subgroups. The KDSQ-C was completed separately by the patients and their informants. We abstracted three components of the KDSQ-C and combined these components into the following four subscales: KDSQ-C-I (items 1–5, memory domain), KDSQ-C-II (items 1–5 & 11–15, memory domain+activities of daily living), KDSQ-C-III (items 1–5 & 6–10, memory domain+other cognitive domains), and KDSQ-C-IV (items 6–10 & 11–15, other cognitive domains+activities of daily living). The reliability and validity were compared between these four subscales.
RESULTS:A receiver operating characteristic (ROC) analysis of questionnaire scores provided by the patients showed that the areas under the ROC curves (AUCs) for the KDSQ-C, KDSQC-I, and KDSQ-C-II for diagnosing dementia were 0.75, 0.72, and 0.76, respectively; the corresponding AUCs for informant-completed questionnaires were 0.92, 0.89, and 0.92, indicating good discriminability for dementia.
CONCLUSIONS:A short form of the patient- and informant-rated versions of the KDSQ-C (KDSQ-C-II) is as capable as the 15-item KDSQ-C in screening for dementia.
