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The REM Sleep Behavior Disorder Screening Questionnaire: Validation Study of the Korean Version (RBDQ-KR)

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Author(s)
Sooyeoun YouHye-Jin MoonSo Young DoYun-Kwok WingJun-Sang SunwooKi-Young JungYong Won Cho
Keimyung Author(s)
Cho, Yong WonYou, Soo YeounMoon, Hye Jin
Department
Dept. of Neurology (신경과학)
Journal Title
Journal of Clinical Sleep Medicine
Issued Date
2017
Volume
13
Issue
12
Keyword
KoreanRBDquestionnairereliabilityvalidity
Abstract
STUDY OBJECTIVES:

REM sleep behavior disorder (RBD) is a parasomnia that is commonly associated with neurodegenerative disorders. We aimed to validate the Hong Kong version of the self-reported RBD questionnaire (RBDQ-HK) with the Korean version (RBDQ-KR) and to investigate its clinical usefulness.

METHODS:

One-hundred five patients with RBD and 105 age- and sex-matched controls were enrolled. Thirty were randomly selected for a retest with the questionnaire after 2 to 4 weeks without any treatment. Receiver operating characteristic curve and exploratory factor analysis were used to evaluate the scale, which had a score ranging from 0 to 100.

RESULTS:

There was no difference in mean age and sex in patients with RBD and control subjects. Patients with RBD had a significantly higher total RBDQ-KR score than the control group (P < .001). The RBDQ-KR demonstrated high sensitivity (93.3%), specificity (89.5%), positive predictive value (89.9%), and negative predictive value (93.1%). Cronbach α coefficient for internal consistency of the total score of the RBDQ-KR was 0.9, which shows high reliability. Exploratory factor analysis showed two components, dream-related and behavioral factors, consistent with the main clinical features of RBD. Based on the results, the best cutoff for the total score ranging from 0 to 100 was at 18/19 and for factor 2 ranging from 0 to 75 was at 11.

CONCLUSIONS:

This study showed RBDQ-KR is a valid and reliable questionnaire for RBD symptoms and severity in Korea. It serves as an effective tool to identify patients with RBD and to facilitate future clinical and research studies.
Keimyung Author(s)(Kor)
조용원
유수연
문혜진
Publisher
School of Medicine (의과대학)
Citation
Sooyeoun You et al. (2017). The REM Sleep Behavior Disorder Screening Questionnaire: Validation Study of the Korean Version (RBDQ-KR). Journal of Clinical Sleep Medicine, 13(12), 1429–1433. doi: 10.5664/jcsm.6840
Type
Article
ISSN
1550-9389
DOI
10.5664/jcsm.6840
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/41541
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Neurology (신경과학)
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