title: Structural Validity of the Pittsburgh Sleep Quality Index in Chinese Undergraduate Students.
abstract: The purpose of this study was to examine the structural validity of the Pittsburgh Sleep Quality Index (PSQI) in Chinese undergraduate students. A cross-sectional questionnaire survey with 631 Chinese undergraduate students was conducted, and the questionnaire package included a measure of demographic characteristics, PSQI, Chinese editions of Center for Epidemiologic Studies-Depression, State- Trait Anxiety Inventory, Rumination Response Scale, and Perceived Social Support Scale. Results showed that the item "use of sleep medicine" was not suitable for use with this population, that a two-factor model provided the best fit to the data as assessed through confirmatory factor analysis, and that other indices were consistently correlated with the sleep quality but not the sleep efficiency factor.
authors.affiliation: Psychological and Educational Research Center, University of International Relations Beijing, China.
authors.forename: Suran
authors.initials: S
authors.lastname: Guo
authors.affiliation: Institute of Education, Henan Normal University Xinxiang, China.
authors.forename: Wenmei
authors.initials: W
authors.lastname: Sun
authors.affiliation: Beijing Institute of EducationBeijing, China; School of Psychology, Beijing Normal UniversityBeijing, China.
authors.forename: Chang
authors.initials: C
authors.lastname: Liu
authors.affiliation: College of Educational Science, Hengyang Normal UniversityHengyang, China; Department of Educational and Counselling Psychology, and Special Education, University of British ColumbiaVancouver, Canada.
authors.forename: Siwei
authors.initials: S
authors.lastname: Wu
keywords: Chinese undergraduate students; Pittsburgh Sleep Quality Index; confirmatory factor analysis; structural validity