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KMID : 1130620090050010020
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Journal of Clinical Neurology
2009 Volume.5 No. 1 p.20 ~ p.23
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Epidemiology of Insomnia in Korean Adults: Prevalence and Associated Factors
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Cho Yong-Won
Hong Seung-Bong
Yun Chang-Ho
Kim Ju-Han
Shin Won-Chul
Earley Christopher J.
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Abstract
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Background and Purpose: Insomnia is a common complaint in adults. However, large epidemiologic studies of insomnia involving Asian populations are rarely reported. We performed an epidemiologic study of insomnia in a large Korean adult population.
Methods: A total of 5,000 subjects (2,470 men and 2,530 women) were interviewed by telephone. A representative sample of subjects aged 20 to 69 years was constituted according to a stratified, multistage random sampling method. Insomnia was defined as either any difficulty getting to sleep or getting back to sleep after waking in the night.
Results: More than one fifth (n=1,141, 22.8%) of the 5,000 subjects complained of insomnia, with the prevalence being significantly higher in women (25.3%) than in men (20.2%, p<0.001). Logistic regression revealed that the prevalence of insomnia increased significantly with age (p<0.001), being higher in those aged 60-69 years than in those aged 20-29 years (OR=2.368, 95% CI=1.762-3.182, p<0.001), and was lower in those with a monthly income of >4.5 million Korean won than in those with an income of <1.5 million Korean won (OR=0.689, 95% CI= 0.523-0.906, p<0.01).
Conclusions: Insomnia is a common complaint in Korean adults, and its prevalence is similar to that in adults in Western countries. Key Words: sleep initiation and maintenance disorders, insomnia, epidemiology, sleep disturbance, nocturnal sleep disturbance.
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KEYWORD
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sleep initiation and maintenance disorders, insomnia, epidemiology, sleep disturbance, nocturnal sleep disturbance.
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