Nationwide epidemiological study of insomnia in Japan

Itani, Osamu; Kaneita, Yoshitaka; Munezawa, Takeshi; Mishima, Kazuo; Jike, Maki; Nakagome, Sachi; Tokiya, Mikiko; Ohida, Takashi

doi:10.1016/j.sleep.2016.05.013

Cited by 72 publications

(65 citation statements)

References 37 publications

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“…To evaluate lifestyle changes that might be related to employees’ mental health, we investigated changes in physical activity and sleeping time after the disaster [ 8 , 9 ]. These lifestyle factors were measured on a three-point scale: increase, no change, and decrease.…”

Section: Methodsmentioning

confidence: 99%

“…Conversely, previous studies have reported that several factors affect maintaining mental health, including regular leisure activities such as hobbies, exercise, or sports; sufficient sleep; having a social network; laughing daily; and maintaining a work-life balance [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. Owing to these factors, employees from evacuation areas may be able to maintain their mental health status despite the drastic changes in their domestic lives or workplaces.…”

Section: Introductionmentioning

confidence: 97%

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Factors Associated with Maintaining the Mental Health of Employees after the Fukushima Nuclear Disaster: Findings from Companies Located in the Evacuation Area

Orui

Suzuki

Goto

et al. 2017

IJERPH

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After the nuclear disaster in Fukushima on 11 March 2011, some businesses were permitted to continue operating even though they were located in the evacuation area designated by the Japanese government. The aim of this study was to examine differences in the mental health status, workplace, living environment, and lifestyle of employees in the evacuation and non-evacuation areas. We also investigated factors related to their mental health status. Data for this cross-sectional study were collected from the questionnaire responses of 647 employees at three medium-sized manufacturing companies in the evacuation and non-evacuation areas. Through a cross-tabulation analysis, employees who worked at companies in the evacuation areas showed an increase in the duration of overtime work, work burden, and commute time, and had experienced separation from family members due to the radiation disaster and perceived radiation risks. The results of a multivariate logistic regression analysis showed that, even in a harsh workplace and living environment, being younger, participating regularly in physical activity, having a social network (Lubben Social Network Scale-6 ≤ 12), laughing frequently, and feeling satisfied with one’s workplace and domestic life were significantly associated with maintaining a healthy mental health status after the disaster. These findings are applicable for workers’ health management measures after disasters.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Factors Associated with Maintaining the Mental Health of Employees after the Fukushima Nuclear Disaster: Findings from Companies Located in the Evacuation Area

Orui

Suzuki

Goto

et al. 2017

IJERPH

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“…In other epidemiological studies in Japan and Korea, 13% and 23% of adults are reported to suffer from insomnia, respectively 4,5) . In traditional concept of insomnia, it was considered as a secondary pathological condition rather than a disease.…”

Section: Introductionmentioning

confidence: 84%

Complementary and Alternative Medicine in Clinical Practice Guideline for Insomnia

Kwon¹,

Suh²,

Choi³

et al. 2016

Journal of Oriental Neuropsychiatry

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Objectives: The aim of this review was to investigate whether evidence of complementary and alternative medicine (CAM) was reflected in clinical practice guidelines (CPGs) for insomnia based on relevant clinical trials. Methods: We conducted a systematic search on domestic and international CPG databases and medical databases. In addition, we conducted manual searches of relevant articles. Three authors independently searched and selected relevant studies; any disagreement was resolved by discussion. We extracted and analyzed the following data: published language, country, development group, participants, interventions, presence or absence of recommendations for CAM, level of evidence, grade of recommendation for CAM, and methods of development. Results: We identified 8,241 records from domestic and international databases, and 22 CPGs were included. Eleven of the 22 CPGs mentioned CAM interventions including herbal medicine, relaxation, acupuncture moxibustion, Tai Chi, meditation, hypnosis, biofeedback, Tuina, and external herbal medicine. However, most of the CPGs indicated 'no recommendation' or 'weak recommendation' for CAM interventions. Only Valeriana dageletiana Nakai and relaxation were considered to have experimental evidence. Valeriana dageletiana Nakai was recommended for improvement of sleep latency, sleep maintenance, total sleeping time, and sleep cycle. Relaxation was recommended as effective intervention for relieving physical and psychological arousal. Conclusions: Despite systematic reviews and randomized controlled trials on CAM for insomnia, most of the CPGs for insomnia did not reflect the evidence obtained. Further CPGs for insomnia should be developed by considering the current advanced studies in the field of CAM.

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“…A 1‐year longitudinal study (Singareddy et al, ) reported the incidence of insomnia as 12.9% in women and 6.2% in men. Reported international rates are lower, at 3.8% in a nationwide face‐to‐face interview study in Japan (Itani et al, ), and 8.6% in women and 5.5% in men in a large population‐based cross‐sectional study in Norway employing DSM‐V criteria to define insomnia (Uhlig, Sand, Odegard, & Hagen, ).…”

Section: Insomniamentioning

confidence: 99%

Update on Research and Practices in Major Sleep Disorders: Part II—Insomnia, Willis‐Ekbom Disease (Restless Leg Syndrome), and Narcolepsy

Chaiard

Weaver

2019

J of Nursing Scholarship

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Purpose This review (Part II of a series on sleep disorders) presents an update of the characteristics, epidemiology, assessment, and latest management of insomnia, restless legs syndrome (Willis‐Ekbom disease; RLS/WED), and narcolepsy. Insomnia, the most common sleep disorder and most prevalent of all psychological health disorders, is a problem of difficulty initiating and maintaining sleep and early morning awakenings. RLS/WED is characterized by a crawling sensation or urge to move the legs in the evening and nighttime. Narcolepsy is a sleep disorder that commonly results in chronic daytime sleepiness and cataplexy. Nonpharmacological management, which includes education, cognitive behavioral therapy, and complementary therapy, is used as primary or adjunctive to pharmacotherapy for the treatment of these disorders. Methods This narrative review utilized medical databases such as PubMed to identify relevant English‐language original and systematic review articles predominantly from peer‐reviewed journals from 2012 to 2019. However, as background, findings from classic articles prior to 2012 were also included. Clinical Relevance Assessment of sleep problems, excessive sleepiness, and difficulty performing activities or being productive should be routine in the care of all patients. Utilization of behavioral interventions, including cognitive behavioral therapy, in addition to education and sleep hygiene, can promote sleep quality. Management of insomnia, RLS/WED, and narcolepsy should include helping patients adjust to treatment, managing cataplexy triggers in narcolepsy, and initiating strategies to live with chronic illness to improve quality of life.

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Nationwide epidemiological study of insomnia in Japan

Cited by 72 publications

References 37 publications

Factors Associated with Maintaining the Mental Health of Employees after the Fukushima Nuclear Disaster: Findings from Companies Located in the Evacuation Area

Factors Associated with Maintaining the Mental Health of Employees after the Fukushima Nuclear Disaster: Findings from Companies Located in the Evacuation Area

Complementary and Alternative Medicine in Clinical Practice Guideline for Insomnia

Update on Research and Practices in Major Sleep Disorders: Part II—Insomnia, Willis‐Ekbom Disease (Restless Leg Syndrome), and Narcolepsy

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