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Validity and reliability of Sleep Quality Scale in subjects with obstructive sleep apnea syndrome

Authors
Yi, HyeryeonShin, KyungrimKim, JinyoungKim, JeongsunLee, JungBokShin, Chol
Issue Date
Jan-2009
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Reliability; Sleep Quality Scale; Validity
Citation
JOURNAL OF PSYCHOSOMATIC RESEARCH, v.66, no.1, pp 85 - 88
Pages
4
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF PSYCHOSOMATIC RESEARCH
Volume
66
Number
1
Start Page
85
End Page
88
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/120843
DOI
10.1016/j.jpsychores.2008.07.008
ISSN
0022-3999
1879-1360
Abstract
Objective: The present study aimed to evaluate the validity and reliability of Sleep Quality Scale (SQS) in subjects with obstructive sleep apnea syndrome (OSAS). Methods: The known group technique was used for construct validity. The study sample was composed of 40 persons with OSAS and 37 normal subjects. OSAS was defined as an apnea-hypopnea index (AHI) of >= 5 plus an Epworth Sleepiness Scale (ESS) score of > 10. Control group was composed of subjects who had no history of depression and sleep problems as identified by self-report and polysomnography. A Cronbach's alpha coefficient was used for internal consistency. Results: The total SQS score of the OSAS subjects was significantly higher than that of the normal Subjects. The SQS score homogeneity was high with a Cronbach's alpha coefficient of 0.90 in all subjects, 0.87 in the OSAS subjects, and 0.70 in the normal subjects. Conclusion: SQS was confirmed to be an instrument with validity and high reliability for measuring sleep quality in OSAS subjects. (c) 2009 Elsevier Inc. All rights reserved.
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