Ki Woong Kim1, Suk-Hoon Kang2, In-Young Yoon3, Sang Don Lee4, Gawon Ju5, Ji Won Han6, Tae Hui Kim6, Chung Suk Lee6, Tae Kim7. 1. Department of Neuropsychiatry, Seoul National University Bundang Hospital, Gyeonggi-do, South Korea; Department of Psychiatry, Seoul National University College of Medicine, Seoul, South Korea. 2. Department of Psychiatry, Veterans Health Service Medical Center, Seoul, South Korea; Department of Psychiatry, Center for Sleep Medicine, Seoul, South Korea. 3. Department of Neuropsychiatry, Seoul National University Bundang Hospital, Gyeonggi-do, South Korea; Department of Psychiatry, Seoul National University College of Medicine, Seoul, South Korea. Electronic address: iyoon@snu.ac.kr. 4. Department of Psychiatry, Korean Armed Forces Capital Hospital, Gyeonggi-do, South Korea. 5. Department of Neuropsychiatry, Chungbuk National University Hospital, Cheongju, South Korea. 6. Department of Neuropsychiatry, Seoul National University Bundang Hospital, Gyeonggi-do, South Korea. 7. Department of Psychiatry, Kyung Hee University Hospital at Gangdong, Seoul,Seoul, South Korea.
Abstract
BACKGROUND: Insomnia is known to be associated with psychiatric disorders, other sleep disorders and medical conditions, but the prevalence of insomnia diagnosis has never been estimated according to its subtypes. We studied the prevalence and clinical characteristics of insomnia diagnosis and its subtypes in the Korean elderly population. METHODS: Among 1423 sampled elderly individuals aged 60 years or older, 881 subjects participated in this study. The Athens Insomnia Scale was applied to detect insomnia symptoms, and insomnia diagnosis was finally evaluated using the international classification of sleep disorders, 2nd edition. To define insomnia subtypes, the DSM-IV-based interview, detailed history on sleep disorders and semi-structured interview for medical conditions were performed. Subsyndromal depression was defined when depressive symptoms did not meet the criteria for depressive disorders. RESULTS: The prevalence of insomnia disorder was 32.8% in all subjects, with the prevalence being significantly higher in women than in men (37.9% vs. 25.2%; p<0.001). The prevalence of insomnia subtypes was as follows; psychophysiological insomnia (PI), 20.5%; insomnia due to mental disorder 7.2%; insomnia due to general medical conditions 2.9%; insomnia in other sleep disorders 2.2%, and insomnia due to substance use 0.2%. Among subjects with PI, subsyndromal depression was diagnosed in 53.7%. CONCLUSIONS: Nearly one third of Korean elderly individuals suffer from insomnia and insomnia patients showed diverse comorbid conditions, especially depressive symptoms. By establishing insomnia subtypes, we can plan to treat comorbid conditions as well as insomnia itself. Copyright Â
BACKGROUND:Insomnia is known to be associated with psychiatric disorders, other sleep disorders and medical conditions, but the prevalence of insomnia diagnosis has never been estimated according to its subtypes. We studied the prevalence and clinical characteristics of insomnia diagnosis and its subtypes in the Korean elderly population. METHODS: Among 1423 sampled elderly individuals aged 60 years or older, 881 subjects participated in this study. The Athens Insomnia Scale was applied to detect insomnia symptoms, and insomnia diagnosis was finally evaluated using the international classification of sleep disorders, 2nd edition. To define insomnia subtypes, the DSM-IV-based interview, detailed history on sleep disorders and semi-structured interview for medical conditions were performed. Subsyndromal depression was defined when depressive symptoms did not meet the criteria for depressive disorders. RESULTS: The prevalence of insomnia disorder was 32.8% in all subjects, with the prevalence being significantly higher in women than in men (37.9% vs. 25.2%; p<0.001). The prevalence of insomnia subtypes was as follows; psychophysiological insomnia (PI), 20.5%; insomnia due to mental disorder 7.2%; insomnia due to general medical conditions 2.9%; insomnia in other sleep disorders 2.2%, and insomnia due to substance use 0.2%. Among subjects with PI, subsyndromal depression was diagnosed in 53.7%. CONCLUSIONS: Nearly one third of Korean elderly individuals suffer from insomnia and insomniapatients showed diverse comorbid conditions, especially depressive symptoms. By establishing insomnia subtypes, we can plan to treat comorbid conditions as well as insomnia itself. Copyright Â
Authors: Megan R Crawford; Diana A Chirinos; Toni Iurcotta; Jack D Edinger; James K Wyatt; Rachel Manber; Jason C Ong Journal: J Clin Sleep Med Date: 2017-07-15 Impact factor: 4.062