Correlates of self-report chronic insomnia disorders with 1-6 month and 6-month durations in home-dwelling urban older adults - the Shih-Pai Sleep Study in Taiwan: a cross-sectional community study.
To examine the correlates of insomnia disorder with different durations in home-dwelling older adults.



A cross-sectional survey in the Shih-Pai area of Taipei City, Taiwan (The Shih-Pai Sleep Study). A total 4047 subjects over the age of 65 years completed the study (2259 men and 1788 women). The Pittsburgh Sleep Quality Index and the duration of insomnia symptoms were used to identify DSM-IV 1-6 month and 6-month insomnia disorders.



The prevalence of DSM-IV defined insomnia disorder was 5.8 %; two-thirds of these case lasted for ≥6 months. The shared correlates for both 1-6 and 6-month insomnia disorders were gender (women), depression and moderate pain. Pulmonary diseases were exclusively associated with 1-6 month insomnia disorder (OR: 2.57, 95 % CI: 1.46-4.52). In contrast, heart disease (OR: 1.73, 95 % CI: 1.21-2.49) and severe pain (OR: 2.34, 95 % CI: 1.14-4.40) were associated with 6-month insomnia disorder.



The prevalence of persistent insomnia disorder is higher than short-term insomnia disorder. Correlates for less persistent and more persistent insomnia disorder appears to be partially different. Duration quantifiers may be important in the identification of the etiology of insomnia and further studies with follow-ups are needed to examine the order of developing insomnia disorder and associated conditions.
Department of Family Medicine & Center for Geriatrics and Gerontology, Taipei Veterans General Hospital, Shipai Rd., Beitou Dist., Taipei City, 112, Taiwan.
Jing-Hui
JH
Chiou
Department of Psychiatry & Center of Sleep Disorders, National Taiwan University Hospital, No. 1, Chang-Te St., Zhongzheng Dist., Taipei City, 100, Taiwan. hsichungchen@ntu.edu.tw.
Hsi-Chung
HC
Chen
Center of Neuropsychiatric Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 350, Taiwan.
Kuang-Hung
KH
Chen
Center of Neuropsychiatric Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 350, Taiwan.|Community Medicine Research Center, National Yang-Ming University, Linong St., Beitou Dist., Taipei City, 112, Taiwan.
Pesus
P
Chou
D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D003863:Depression / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D005260:Female; D006801:Humans; D057187:Independent Living / Q000523:psychology; D008297:Male; D015995:Prevalence; D012111:Residence Characteristics; D057566:Self Report; D007319:Sleep Initiation and Maintenance Disorders / Q000175:diagnosis* / Q000453:epidemiology* / Q000523:psychology; D013624:Taiwan / Q000453:epidemiology; D013997:Time Factors; D014505:Urban Population
Chronicity; Insomnia disorder; Older adults; Shih-Pai Sleep Study