J Korean Neuropsychiatr Assoc.  2016 Feb;55(1):41-50. 10.4306/jknpa.2016.55.1.41.

The Clinical Association between the Prevalence of Insomnia and Physical and Psychiatric Disorders in Two Areas of Gyeonggi Province of South Korea

• Cho SJ
• Oh DH
• Park YC
• Nam JH
• Kim SH

• KMID: 2192907
• DOI: http://doi.org/10.4306/jknpa.2016.55.1.41

Abstract

OBJECTIVES
The purposes of this study are to examine the sociodemographic factors that increase the prevalence of insomnia, as well as to identify the relationship between the prevalence of insomnia and health conditions by navigating through the prevalence rates of insomnia in two different geographical regions with different socioeconomic structures.
METHODS
A survey was conducted targeting 937 residents of Guri-si and Yangpyeong-gun in Gyeonggi Province, Korea. The Insomnia Severity Index was used to verify whether a respondent was experiencing insomnia. The Abbreviated Self-Rated Korean version of the Mini-International Neuropsychiatric Interview was used in diagnosis of mental diseases. Chi-square test was performed to determine the unique relationship between sociodemographic characteristics and the prevalence of insomnia. Multivariate logistic regression analysis was performed to examine the association of prevalence of insomnia with categorized relevant factors.
RESULTS
The overall prevalence rate of insomnia for all respondents was 9.26%. The prevalence rate for Yangpyeong-gun was 11.75%, marking a significantly higher figure compared with the prevalence rate for Guri-si, which was 6.87%. Advanced age, female, other marital statuses than married, lower education, lower income, non-existence of private health insurance, and unemployment were risk factors for insomnia. The prevalence of insomnia showed strong association with physical and mental conditions, particularly with mental disorders, urologic diseases, and risk of injury from fall.
CONCLUSION
The prevalence rates of insomnia in those two surveyed regions showed a meaningful difference even after controlling for sociodemographic characteristics. These findings suggest that such regional differences merits further attention and additional nationwide epidemiologic studies are needed.

Keyword

Insomnia; Prevalence; Sociodemographic characteristics; Physical health; Mental health

MeSH Terms

Surveys and Questionnaires
Diagnosis
Education
Epidemiologic Studies
Female
Gyeonggi-do*
Humans
Insurance, Health
Korea*
Logistic Models
Marital Status
Mental Disorders
Mental Health
Prevalence*
Risk Factors
Sleep Initiation and Maintenance Disorders*
Unemployment
Urologic Diseases

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