Population study on the prevalence of insomnia and insomnia-related factors among Japanese women
Department of Public Health, Gunma University School of Medicine, Showa 3, Maebashi 371-8511, Japan. Sleep Medicine
(Impact Factor: 3.15).
11/2003; 4(6):563-7. DOI: 10.1016/S1389-9457(03)00109-6
To identify the effect of certain factors on insomnia in the general population.
A self-reported questionnaire survey was conducted among 648 Japanese women living in the residential area of a city. Age of participants ranged from 20 to 80 s.
The crude prevalence of insomnia was 8.8%. Multivariate logistic regression analysis with control for many confounding variables revealed that experiencing a major life event (OR=4.4, 95% CI=1.7-11.4, P<0.01), depressive state (OR=1.2, 95% CI=1.1-1.3, P<0.01), and 'relatively poor or poor' self-rated health (OR=3.2, 95% CI=1.0-10.1, P<0.05) were risk factors for insomnia. By contrast, there was no dose-response relationship between the distance of our subjects from a major road and prevalence of insomnia.
The authors assume that depressive state by a major life event is closely associated with insomnia and that relatively poor self-rated health is also associated with stressful event and psychological distress. Although the noise from vehicles such as cars or motorcycles can affect the quality of sleep for subjects who live near a major road, in general the prevalence of insomnia did not increase significantly in this study.
Available from: Chien-Tung Wu
- "The climacteric experience involves a complex interaction between sociocultural, psychological, and environmental factors, as well as the biological changes that are related to altered ovarian hormone status and hormone deficiency [17–20]. The above findings corroborate the results of some earlier studies that, in an independent or synergistic way, have shown that menopausal-related symptoms, together with chronic diseases, are able to act with physical, social, and environmental factors to predispose individuals to psychological symptoms [17, 21]. This then results in a certain amount of self-medication with herbal therapies in an attempt to mitigate some of menopausal-related symptoms or the adverse effects of hormonal therapies, without the individual knowing that the combination might actually result in an increased risk . "
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ABSTRACT: Background. The purpose of the present study was to analyze the concurrent use of Chinese herbal products (CHPs) among women aged 55 to 79 years who had also been prescribed hormonal therapies (HT) and its association with breast cancer risk. Methods. The use, frequency of service, and CHP prescribed among 17,583 HT users were evaluated from a random sample of 1 million beneficiaries from the National Health Insurance Research Database. A logistic regression method was used to identify the factors that were associated with the coprescription of a CHP and HT. Cox proportional hazards regressions were performed to calculate the hazard ratios (HRs) of breast cancer between the TCM nonusers and women who had undergone coadministration of HT and a CHP or CHPs. Results. More than one out of every five study subjects used a CHP concurrently with HT (CHTCHP patients). Shu-Jing-Huo-Xie-Tang was the most commonly used CHP coadministered with HT. In comparison to HT-alone users, the HRs for invasive breast cancer among CHTCHP patients were not significantly increased either in E-alone group or in mixed regimen group. Conclusions. The coadministration of hormone regimen and CHPs did not increase the risk of breast cancer.
Available from: PubMed Central
- "These findings are similar to those found in studies performed in other countries,6,8,12,13 but differs from one study that found that only the prevalence of disrupted sleep was higher in women.9 This result could be due to women being more vulnerable to depressive states, stressful events, and psychological distress.14 Menopause is also an independent factor for insomnia.15 "
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ABSTRACT: 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.
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.
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).
Insomnia is a common complaint in Korean adults, and its prevalence is similar to that in adults in Western countries.
Available from: Sangyeol Lee
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ABSTRACT: Although the prevalence of insomnia and the association of insomnia with menopause have been well reported, not much work has been conducted in population-based research on insomnia and menopause in Korea. The purpose of the present report was to determine overall and different prevalence of insomnia by menopausal status, and the relationship between insomnia and menopause in a population-based sample of middle-aged Korean women. A total of 96.1% of 2497 randomly selected middle-aged Korean women participated. Insomnia was defined as occurring three times a week or more in the previous month. Subjects were categorized into three groups: premenopause, perimenopause, and postmenopause. The overall prevalence of insomnia in middle-aged Korean women was 14.3%. The most common symptom of insomnia was difficulty maintaining sleep (9.7%), followed by difficulty initiating sleep (7.9%), and early morning awakening (7.5%). Multiple logistic regression analysis revealed that menopause was independently associated with insomnia after adjusting for confounding factors such as age, income, and depression. Perimenopause was significantly associated with a dramatic increase in the risk of insomnia, but there was no significant association for postmenopause. The major finding is that insomnia is significantly associated with the menopausal transition. The prevalence of insomnia increases significantly by the transition from premenopause to perimenopause, but not to postmenopause. A further prospective study is needed to investigate the influence of menopause on insomnia.
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