title: Relationships of sleep duration with sociodemographic and health-related factors, psychiatric disorders and sleep disturbances in a community sample of Korean adults.
abstract: The aim of this study is to examine relationships of sleep duration with sociodemographic and health-related factors, psychiatric disorders and sleep disturbances in a nationwide sample in Korea. A total of 6510 subjects aged 18-64 years participated in this study. Logistic regression was used to calculate the odd ratios and 95% confidence intervals of the covariates, psychiatric disorders and sleep disturbances across the following sleep duration categories: 5 h or less, 6, 7, 8 and 9 h or more per day. Low levels of education, unemployment and physical illness were associated with sleeping for 5 h or less and 9 h or more. Being older and widowed/divorced/separated, high levels of physical activity, pain/discomfort, obesity and high scores on the General Health Questionnaires were associated with sleeping for 5 h or less. Female, being younger and underweight were associated with sleeping for 9 h or more. Alcohol dependence, anxiety disorder and social phobia were associated significantly with sleeping for 5 h or less and 9 h or more. Other psychiatric disorders were more common in subjects who slept for 5 h or less (e.g. alcohol use disorder, mood disorder, major depressive disorder, dysthymic disorder, obsessive-compulsive disorder and specific phobia) or 9 h or more (e.g. post-traumatic stress disorder). In addition, subjects who slept for 5 h or less reported more sleep disturbances than did subjects who slept for 7 h. Short or long sleep is associated with psychiatric disorders and/or sleep disturbance, therefore attention to the mental health of short or long sleepers is needed.
authors.affiliation: Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Subin
authors.initials: S
authors.lastname: Park
authors.forename: Maeng Je
authors.initials: MJ
authors.lastname: Cho
authors.forename: Sung Man
authors.initials: SM
authors.lastname: Chang
authors.forename: Jae Nam
authors.initials: JN
authors.lastname: Bae
authors.forename: Hong Jin
authors.initials: HJ
authors.lastname: Jeon
authors.forename: Seong-Jin
authors.initials: SJ
authors.lastname: Cho
authors.forename: Byung-Soo
authors.initials: BS
authors.lastname: Kim
authors.forename: In-Won
authors.initials: IW
authors.lastname: Chung
authors.forename: Joon Ho
authors.initials: JH
authors.lastname: Ahn
authors.forename: Hae Woo
authors.initials: HW
authors.lastname: Lee
authors.forename: Jin Pyo
authors.initials: JP
authors.lastname: Hong
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D016009:Chi-Square Distribution; D016001:Confidence Intervals; D005260:Female; D006304:Health Status; D006801:Humans; D016015:Logistic Models; D008297:Male; D017533:Marital Status; D001523:Mental Disorders / Q000150:complications* / Q000453:epidemiology; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology; D016017:Odds Ratio; D056910:Republic of Korea / Q000453:epidemiology; D012737:Sex Factors; D012890:Sleep / Q000502:physiology*; D012893:Sleep Wake Disorders / Q000150:complications* / Q000453:epidemiology; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D013997:Time Factors; D055815:Young Adult