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Free Content Relationships of sleep duration with sociodemographic and health-related factors, psychiatric disorders and sleep disturbances in a community sample of Korean adults

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Abstract:

Summary

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.

Keywords: epidemiology; mental disorders; sleep; sleep initiation and maintenance disorders

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1365-2869.2010.00841.x

Affiliations: 1: Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea 2: Department of Neuropsychiatry, Seoul National University Hospital, Seoul, South Korea 3: Department of Psychiatry, Kyungpook National University College of Medicine, Daegu, South Korea 4: Department of Psychiatry, College of Medicine, Inha University, Incheon, South Korea 5: Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea 6: Department of Psychiatry, Gachon University of Medicine and Science, Incheon, South Korea 7: Department of Neuropsychiatry, Dongguk University College of Medicine, International Hospital, Goyang, South Korea 8: Department of Psychiatry, University of Ulsan College of Medicine, Ulsan Medical Center, Ulsan, South Korea

Publication date: December 1, 2010

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