![]() ![]() Also, many subjects with insomnia have psychiatric comorbidities, rendering the discrimination of insomnia subtypes difficult. Insomnia reportedly increases the rate of car accidents ( 4), decreases job performance, results in self-medication with alcohol as well as socio-economic problems ( 5– 7), and has been associated with the onset of cardiovascular diseases ( 8).Īlthough a previous (second) edition of the International Classification of Sleep Disorders (ICSD-2) distinguished psychophysiological insomnia from mental-illness induced insomnia ( 9), there are substantial overlap features between the two: e.g., conditioned arousal, poor sleep hygiene, and excessive worry about sleep ( 10). While the prevalence of insomnia varies considerably across countries, its global prevalence of insomnia as defined by the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) criteria is estimated to be ~6–10% ( 1– 3). Clinicians should, therefore, consider psychiatric comorbidities when treating insomnia.Īs one of the most common sleep disorders, insomnia has become a significant public health problem. The PSQI has a significant mediation effect on the relationship between psychiatric comorbidities and insomnia severity.Ĭonclusion: Among the respondents with insomnia, psychiatric comorbidities may have a negative impact on daytime alertness, general sleep quality, and insomnia severity, especially when the two conditions are present at the same time. ![]() The relationship between outcome measures (ISI and PSQI) and psychiatric problems was significant only when anxiety and depression were present. The group with both anxiety and depression was associated with worse scores on sleep-related scales than the other groups. ![]() Of the participants with insomnia, 152 (52.4%) had neither anxiety nor depression, 63 (21.7%) only had anxiety, 21 (7.2%) only had depression, and 54 (18.6%) had both anxiety and depression. Results: Of the 2,762 respondents, 290 (10.5%) were classified as subjects with high risk for insomnia anxiety and depression (OR, 19.7 95% CI, 13.1–29.6) were more common in this population than in participants without insomnia. To diagnose anxiety and depression, we used the Goldberg anxiety scale (GAS) and Patient Health Questionnaire-9 (PHQ-9), respectively. We used the insomnia severity index (ISI) to evaluate insomnia and defined respondents with ISI scores of ≥10 were considered to be at high risk for insomnia. The survey was performed via face-to-face interviews using a structured questionnaire. Methods: We analyzed data from a nation-wide cross-sectional survey of Korean adults aged 19 ~ 69 years conducted from November 2011 to January 2012. We investigated the relationship between sleep disturbance and psychiatric comorbidities in subjects with high risk for insomnia. However, the clinical impact of the combination of these two conditions on insomnia severity and sleep quality remains unknown. Several psychiatric disorders, such as anxiety disorders and depression, have shown strong relationships with insomnia. Introduction: One of the most common sleep disorders, insomnia is a significant public health concern. 3Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea. ![]() 2Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, South Korea.1Division of Endocrinology and Metabolism, CHA Bundang Medical Center, School of Medicine CHA University, Seongnam-si, South Korea.Chang-Myung Oh 1, Ha Yan Kim 2, Han Kyu Na 3, Kyoo Ho Cho 3 * and Min Kyung Chu 3 ![]()
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