Factors Associated with Insomnia Among Truck Drivers in Japan

Takashi Miyachi,1 Kyoko Nomura,2 Sachiko Minamizono,2 Kazuki Sakai,1 Toyoto Iwata,2 Yuta Sugano,1 Shun Sawaguchi,3 Kouhei Takahashi,3 Kazuo Mishima4 1Department of Medicine, Akita University Graduate School of Medicine, Akita, Japan; 2Department of Environmental Health Science and Public Health, Aki...

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Autores principales: Miyachi T, Nomura K, Minamizono S, Sakai K, Iwata T, Sugano Y, Sawaguchi S, Takahashi K, Mishima K
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Publicado: Dove Medical Press 2021
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spelling oai:doaj.org-article:9e761f7fb919457c9a2f5703355ae15d2021-12-02T15:55:55ZFactors Associated with Insomnia Among Truck Drivers in Japan1179-1608https://doaj.org/article/9e761f7fb919457c9a2f5703355ae15d2021-05-01T00:00:00Zhttps://www.dovepress.com/factors-associated-with-insomnia-among-truck-drivers-in-japan-peer-reviewed-fulltext-article-NSShttps://doaj.org/toc/1179-1608Takashi Miyachi,1 Kyoko Nomura,2 Sachiko Minamizono,2 Kazuki Sakai,1 Toyoto Iwata,2 Yuta Sugano,1 Shun Sawaguchi,3 Kouhei Takahashi,3 Kazuo Mishima4 1Department of Medicine, Akita University Graduate School of Medicine, Akita, Japan; 2Department of Environmental Health Science and Public Health, Akita University Graduate School of Medicine, Akita, Japan; 3Japan Health Insurance Association, Akita Branch, Akita, Japan; 4Department of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, JapanCorrespondence: Kyoko NomuraDepartment of Environmental Health Science and Public Health, Akita University Graduate School of Medicine, 1– 1– 1 Hondo, Akita, 010-8543, JapanTel +81-18-884-6086Fax +81-18-836-2609Email nomurakyoko@gmail.comPurpose: Truck drivers with insomnia are at a high risk of traffic accidents. We aimed to investigate the prevalence of insomnia and identify its associated factors among truck drivers in Japan.Methods: Participants were 2927 male truck drivers younger than 65 years old. Self-administered questionnaires were used to assess insomnia symptoms, State-Trait Anxiety Inventory, drinking, smoking habits, body mass index, caffeine intake, as well as daily driving hours, consecutive days away from home, and driving distance. Insomnia symptoms included difficulty initiating sleep, maintaining sleep and early morning awakening. Insomnia was defined when any of these symptoms were observed with daily tiredness.Results: The prevalence of insomnia among the subjects was 13.3% (n=356), of which 13.5% had difficulty initiating sleep, 78% had difficulty maintaining sleep, and 26.4% had early morning awakening. After adjusting for covariates, drinking habits, daily driving hours, and STAI score were significantly and linearly associated with insomnia; the adjusted odds ratio (OR) of drinking habits for insomnia was 1.74 [95% confidence interval (CI), 1.23– 2.47] for heavy drinkers compared to non-drinkers (trend p< 0.001); the adjusted OR of daily driving hours was 1.87 (95% CI, 1.00– 3.49) for 12 hours or longer in a day compared to < 8 hours in a day (trend p< 0.001); the adjusted OR of STAI quartiles was 5.30 (95% CI, 3.66– 7.67) for the highest quartile compared to the lowest quartile (trend p< 0.001).Conclusion: The present study demonstrated that insomnia is prevalent among truck drivers in Japan, and its risk factors include drinking habits, daily driving hours, and anxiety.Keywords: insomnia, truck driver, State-Trait Anxiety Inventory, STAI, working environment, lifestyleMiyachi TNomura KMinamizono SSakai KIwata TSugano YSawaguchi STakahashi KMishima KDove Medical Pressarticleinsomniatruck driverstate-trait anxiety inventory (stai)working environmentlifestylePsychiatryRC435-571Neurophysiology and neuropsychologyQP351-495ENNature and Science of Sleep, Vol Volume 13, Pp 613-623 (2021)
institution DOAJ
collection DOAJ
language EN
topic insomnia
truck driver
state-trait anxiety inventory (stai)
working environment
lifestyle
Psychiatry
RC435-571
Neurophysiology and neuropsychology
QP351-495
spellingShingle insomnia
truck driver
state-trait anxiety inventory (stai)
working environment
lifestyle
Psychiatry
RC435-571
Neurophysiology and neuropsychology
QP351-495
Miyachi T
Nomura K
Minamizono S
Sakai K
Iwata T
Sugano Y
Sawaguchi S
Takahashi K
Mishima K
Factors Associated with Insomnia Among Truck Drivers in Japan
description Takashi Miyachi,1 Kyoko Nomura,2 Sachiko Minamizono,2 Kazuki Sakai,1 Toyoto Iwata,2 Yuta Sugano,1 Shun Sawaguchi,3 Kouhei Takahashi,3 Kazuo Mishima4 1Department of Medicine, Akita University Graduate School of Medicine, Akita, Japan; 2Department of Environmental Health Science and Public Health, Akita University Graduate School of Medicine, Akita, Japan; 3Japan Health Insurance Association, Akita Branch, Akita, Japan; 4Department of Neuropsychiatry, Akita University Graduate School of Medicine, Akita, JapanCorrespondence: Kyoko NomuraDepartment of Environmental Health Science and Public Health, Akita University Graduate School of Medicine, 1– 1– 1 Hondo, Akita, 010-8543, JapanTel +81-18-884-6086Fax +81-18-836-2609Email nomurakyoko@gmail.comPurpose: Truck drivers with insomnia are at a high risk of traffic accidents. We aimed to investigate the prevalence of insomnia and identify its associated factors among truck drivers in Japan.Methods: Participants were 2927 male truck drivers younger than 65 years old. Self-administered questionnaires were used to assess insomnia symptoms, State-Trait Anxiety Inventory, drinking, smoking habits, body mass index, caffeine intake, as well as daily driving hours, consecutive days away from home, and driving distance. Insomnia symptoms included difficulty initiating sleep, maintaining sleep and early morning awakening. Insomnia was defined when any of these symptoms were observed with daily tiredness.Results: The prevalence of insomnia among the subjects was 13.3% (n=356), of which 13.5% had difficulty initiating sleep, 78% had difficulty maintaining sleep, and 26.4% had early morning awakening. After adjusting for covariates, drinking habits, daily driving hours, and STAI score were significantly and linearly associated with insomnia; the adjusted odds ratio (OR) of drinking habits for insomnia was 1.74 [95% confidence interval (CI), 1.23– 2.47] for heavy drinkers compared to non-drinkers (trend p< 0.001); the adjusted OR of daily driving hours was 1.87 (95% CI, 1.00– 3.49) for 12 hours or longer in a day compared to < 8 hours in a day (trend p< 0.001); the adjusted OR of STAI quartiles was 5.30 (95% CI, 3.66– 7.67) for the highest quartile compared to the lowest quartile (trend p< 0.001).Conclusion: The present study demonstrated that insomnia is prevalent among truck drivers in Japan, and its risk factors include drinking habits, daily driving hours, and anxiety.Keywords: insomnia, truck driver, State-Trait Anxiety Inventory, STAI, working environment, lifestyle
format article
author Miyachi T
Nomura K
Minamizono S
Sakai K
Iwata T
Sugano Y
Sawaguchi S
Takahashi K
Mishima K
author_facet Miyachi T
Nomura K
Minamizono S
Sakai K
Iwata T
Sugano Y
Sawaguchi S
Takahashi K
Mishima K
author_sort Miyachi T
title Factors Associated with Insomnia Among Truck Drivers in Japan
title_short Factors Associated with Insomnia Among Truck Drivers in Japan
title_full Factors Associated with Insomnia Among Truck Drivers in Japan
title_fullStr Factors Associated with Insomnia Among Truck Drivers in Japan
title_full_unstemmed Factors Associated with Insomnia Among Truck Drivers in Japan
title_sort factors associated with insomnia among truck drivers in japan
publisher Dove Medical Press
publishDate 2021
url https://doaj.org/article/9e761f7fb919457c9a2f5703355ae15d
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