Industrial HealthPub Date : 2024-08-19DOI: 10.2486/indhealth.2024-0088
Lee DI Milia, Bjorn Bjorvatn
{"title":"The relationship between shift work, sleep, and work hours on wellbeing.","authors":"Lee DI Milia, Bjorn Bjorvatn","doi":"10.2486/indhealth.2024-0088","DOIUrl":"https://doi.org/10.2486/indhealth.2024-0088","url":null,"abstract":"<p><p>We investigated the role of sleep and work hours on wellbeing among day- and shift workers. We tested a mediation-moderation hypothesis proposing that; 1) sleep would mediate the association between the work schedule and the impact of sleep/sleepiness on wellbeing; 2) work hours would moderate the link between work schedule and sleep. We made random phone calls to 1,162 participants and identified 172-day and 130 shift workers that worked ≥ 35-hours/week. The work schedule had a positive indirect effect on the impact of sleep/sleepiness via sleep duration (β=0.0511, SE=0.0309, [0.0008, 0.3219]. The relationship between shift work and sleep duration was negative (β=-0.35, SE=0.14, p<0.01), and sleep duration was negatively associated with a greater impact of sleep/sleepiness on wellbeing (β=-0.15, SE=0.06, p<0.02). The path between the work schedule and sleep duration was moderated by work hours; fewer work hours resulted in shift workers reporting a greater impact of sleep/sleepiness on wellbeing. The results support the mediation-moderation hypothesis. Work hours and sleep duration are key characteristics in work schedule design.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141999845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2024-08-15DOI: 10.2486/indhealth.2023-0196
Brendan Ryan, Nastaran Dadashi, Keith Gibbs
{"title":"Supporting the management of long-term health risk from night work.","authors":"Brendan Ryan, Nastaran Dadashi, Keith Gibbs","doi":"10.2486/indhealth.2023-0196","DOIUrl":"https://doi.org/10.2486/indhealth.2023-0196","url":null,"abstract":"<p><p>Societal demands mean that many companies operate throughout the day to provide services. The impact of night work on long-term health is not clear, but there is sufficient evidence for closer monitoring of this as a concern and industry is not sure what more they need to do about this potential problem. There are many health conditions and potential interventions to reduce risks from night working, but there is no clarity on how to design and implement intervention programmes for long-term health issues. This paper reports on a rapid review of 24 articles to examine how interventions can minimise long-term health risk from night work. The analysis has identified eight types of intervention that have been used in relation to seven types of long-term health conditions but has highlighted weaknesses in evaluation, in relation to the current knowledge of the implementation and effectiveness of the interventions for long-term health. Commentary is provided on how researchers and industry practitioners need to think about risk in different ways, improve implementation of interventions through a systemic approach to work design and organisation, and employ more participatory approaches to embed cultural change in organisations.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141982230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Association between long working hours of doctors and the seriousness of adverse events: a cross-sectional study using national adverse event reporting system data in Japan.","authors":"Yumi Arai, Yuko Kachi, Hiroyuki Hikichi, Kazuhiro Watanabe, Reiko Inoue, Noboru Iwata, Akizumi Tsutsumi","doi":"10.2486/indhealth.2023-0125","DOIUrl":"https://doi.org/10.2486/indhealth.2023-0125","url":null,"abstract":"<p><p>The association between doctors' long working hours and the seriousness of adverse events with high patient impact has not been fully confirmed. Most previous studies were based on work hour regulations using more than 80 hours per week as an indicator of long working hours. We aimed to assess the association using a shorter indicator as the cut-off for long working hours among hospital doctors including senior doctors. This cross-sectional study used 12,245 adverse event reports from the Japan Council for Quality Health Care. We defined long working hours as 55 hours or more in the week before the adverse event and assessed the association with the seriousness of adverse events with high patient impact. The results showed that doctors working 55 or more hours in the preceding week were more likely to be involved in serious adverse events than those working fewer hours (odds ratio (OR) 1.22, 95% confidence interval (CI): 1.12-1.32). This association remained significant after adjusting for all covariates (OR 1.18, 95% CI: 1.08-1.28). Senior doctors were more likely to be involved in serious adverse events. Long working hours among doctors were associated with the seriousness of adverse events.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2024-07-24Epub Date: 2024-03-06DOI: 10.2486/indhealth.2023-0116
Masakazu Terauchi, Yuki Ideno, Kunihiko Hayashi
{"title":"Effect of shift work on excessive daytime sleepiness in female nurses: results from the Japan Nurses' Health Study.","authors":"Masakazu Terauchi, Yuki Ideno, Kunihiko Hayashi","doi":"10.2486/indhealth.2023-0116","DOIUrl":"10.2486/indhealth.2023-0116","url":null,"abstract":"<p><p>We investigated the relationship between shift work and excessive daytime sleepiness (EDS) among participants in the Japan Nurses' Health Study (JNHS). Responses of 9,728 female nurses to the 6th follow-up questionnaire were cross-sectionally analyzed. EDS was defined as an Epworth Sleepiness Scale score ≥11. EDS-associated factors were evaluated using Poisson regression analysis after adjustment for multiple confounders. Of the participants (mean age, 52.2 ± 8.0 yr), 28.7% were engaged in shift work, and the overall prevalence of EDS was 24.6%. EDS-associated factors were investigated separately in women aged <40 yr (n=250), 40-59 yr (n=7,467), and ≥60 yr (n=2,011). Current engagement in shift work (prevalence ratio: 1.92 [95% confidence interval: 1.20-3.06], compared with no experience of shift work) and obesity (2.08 [1.11-3.88] for BMI ≥30 and 1.39 [1.02-1.90] for BMI of 25.0-30.0, compared with BMI of 18.5-25.0) showed an independent association with EDS in women aged ≥60 yr. The effect of shift work on EDS in female nurses differed by age, as shift work and obesity contributed to EDS only in older participants. Shift work should be assigned after full consideration of age, sleep, and health status to minimize medical errors.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"252-258"},"PeriodicalIF":1.8,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11292310/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140049369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Asbestos in organochlorine insecticide powder sprinkled between pages of antiquarian books in a library in Japan.","authors":"Yoko Sakakibara, Kiyoshi Sakai, Naomi Hisanaga, Naoki Toyama, Hiroshi Takase, Isao Saito, Toshio Kawai, Takayoshi Suzuki, Akira Miyake, Hirofumi Nakano, Eiji Shibata, Michihiro Kamijima","doi":"10.2486/indhealth.2023-0185","DOIUrl":"10.2486/indhealth.2023-0185","url":null,"abstract":"<p><p>Librarians at a university had planned to check the collection prior to the library renovations that began in 2015. They had previous knowledge of the presence of a light greyish-white powder with an unpleasant odour (hereinafter referred to as 'powder') sprinkled between the pages of antiquarian books in the library archive. The purpose of this study was to identify this powder with the help of experts from both inside and outside the university. The powder was qualitatively analysed using gas chromatography with mass spectrometry after hexane extraction. The powder was examined under a polarised light microscope and a field-emission scanning electron microscope equipped with an energy-dispersive X-ray spectrometer. Benzene hexachloride (BHC) was detected in the powder. Talc was the most abundant particle in the powder. The powder also contained 0.52 wt% asbestos, which belonged to the tremolite-actinolite series. No other types of asbestos were detected. The powder was presumed to be a bulking agent for BHC, and its major constituent was talc. This is the first report on asbestos-containing insecticides.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"271-280"},"PeriodicalIF":1.8,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11292307/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140206755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2024-07-24Epub Date: 2024-01-16DOI: 10.2486/indhealth.2023-0139
Sarah M Taggart, Olivier Girard, Grant J Landers, Karen E Wallman
{"title":"Symptoms of heat illness and water consumption habits in mine industry workers over the summer months in Australia.","authors":"Sarah M Taggart, Olivier Girard, Grant J Landers, Karen E Wallman","doi":"10.2486/indhealth.2023-0139","DOIUrl":"10.2486/indhealth.2023-0139","url":null,"abstract":"<p><p>Mine industry workers (n=515) from various locations in Australia completed a questionnaire to assess the prevalence of symptoms associated with heat-related illness and water consumption habits during a summer season. Participants read from a pre-defined list and noted any heat-related symptoms that they had experienced. The most prevalent symptoms experienced were fatigue, headache, sweating, and dark coloured urine, with 77% of respondents reporting at least one symptom. Workers with shorter employment durations had higher rates of reporting multiple symptoms (rates ratios: 1.40-1.72). The most prevalent water consumption amounts over an 11-12 h shift were 2-4 L by 37.3% of total respondents, followed by 1-2 L by 36.5% of respondents. Employers should inform workers about the severe implications of heat-related illnesses, implement regular water breaks, and educate personnel about the importance of water intake. Providing employees with self-check methods of hydration status is recommended to increase awareness of their hydration status.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"259-264"},"PeriodicalIF":1.8,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11292308/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139484447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Predicting physical and mental health status through interview-based evaluation of work stress: initial attempts to standardize the interviewing method.","authors":"Keita Kiuchi, Xin Kang, Ryota Nishimura, Manabu Sasayama, Kazuyuki Matsumoto","doi":"10.2486/indhealth.2023-0144","DOIUrl":"10.2486/indhealth.2023-0144","url":null,"abstract":"<p><p>This study conducted an interview-based stress evaluation that considered the psychosocial models of work stress and verified the evaluation's predictive validity. A four-stage assessment comprising a pre-survey, pre-interview questionnaire, stress assessment interview, and post-survey after one month was conducted with 50 Japanese workers. Additionally, 16 occupational health professionals provided stress evaluations based on recorded interview videos. Variables based on intraclass correlation coefficients (ICCs) were computed in multiple ways to compare the agreement among the evaluators. The generalized estimating equation (GEE) was conducted to evaluate the prediction models. The overall ICC among the evaluators was 0.58. The GEE revealed that the mean score of the evaluators in the interview-based stress evaluation significantly predicted psychological symptoms (β =2.02, p=0.019), burnout (β =0.77, p<0.001), and well-being (β =-0.64, p=0.007) one month later, even after adjusting for the self-reported stress levels measured in the pre-survey. The predictive validity of the proposed interview-based stress evaluation was confirmed. Although there are several challenges in standardizing this evaluation, semi-structured interviews are an effective tool for understanding work stress.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"237-251"},"PeriodicalIF":1.8,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11292312/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139512346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Association between different types of physical activity and occupational stress in Japanese workers: a cross-sectional study.","authors":"Takafumi Abe, Kenta Okuyama, Atsushi Motohiro, Daijo Shiratsuchi, Minoru Isomura","doi":"10.2486/indhealth.2023-0092","DOIUrl":"10.2486/indhealth.2023-0092","url":null,"abstract":"<p><p>This cross-sectional study investigated the association between different types of physical activity (PA) and occupational psychological and physical stress responses among workers in Japan. Stress responses were assessed using the Brief Job Stress Questionnaire. Work-related PA (time spent sitting, sitting bouts, standing, walking, engaging in heavy labor, and moderate-to-vigorous PA [MVPA]) and exercise-based PA (frequencies [times/week] of flexibility and muscle-strengthening activity, and walking) were measured using a questionnaire. Multiple linear regression was performed to examine the association between each type of PA and stress responses. Participants who engaged in >108 min/day of work-related MVPA exhibited a statistically significant association with higher psychological stress responses when compared to those who engaged in 0-42 min/day of work-related MVPA. For exercise-based PA, participants who engaged in flexibility activity or walking five or more times/week, or muscle-strengthening activity one to three times/week, demonstrated significantly lower psychological stress responses compared to those who did not exercise. Participants who engaged in flexibility activity five or more times/week demonstrated significantly lower physical stress responses compared to those who did not exercise. This study suggests that work-related MVPA is associated with higher psychological stress responses, while exercise-based PA is associated with lower psychological or physical stress responses.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"227-236"},"PeriodicalIF":1.8,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11292311/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139484444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2024-07-24Epub Date: 2024-01-29DOI: 10.2486/indhealth.2023-0191
Mo-Yeol Kang
{"title":"Working hours and labour productivity from the occupational medicine perspective.","authors":"Mo-Yeol Kang","doi":"10.2486/indhealth.2023-0191","DOIUrl":"10.2486/indhealth.2023-0191","url":null,"abstract":"","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":"281-283"},"PeriodicalIF":1.8,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11292309/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139570505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Industrial HealthPub Date : 2024-07-11DOI: 10.2486/indhealth.2024-0081
Kosuke Sakai, Tomohisa Nagata, Takahiro Mori, Naozumi Sueyoshi, Shunsuke Inoue, Kiminori Odagami, Yoshiyuki Shibata, Koji Mori
{"title":"Determinants of job continuity among older workers: a mixed-methods research in Japan.","authors":"Kosuke Sakai, Tomohisa Nagata, Takahiro Mori, Naozumi Sueyoshi, Shunsuke Inoue, Kiminori Odagami, Yoshiyuki Shibata, Koji Mori","doi":"10.2486/indhealth.2024-0081","DOIUrl":"https://doi.org/10.2486/indhealth.2024-0081","url":null,"abstract":"<p><p>This study aims to determine the factors that encourage older workers to continue working. This study had an exploratory sequential design using a mixed-methods approach, including interviews and questionnaire surveys. In the interview survey, we targeted 30 workers aged between 60-65 across three manufacturing companies. After using the results of the content analysis in the interviews, we conducted an online questionnaire survey with 1,500 workers aged between 60-89 across the country. We analyzed whether the 15 factors were related to intention to continue working using logistic regression analysis. We identified factors affecting job continuity from three perspectives: individual, company, and life. We determined several factors: health condition, job performance, self-esteem, conservatism, employment system, workload, medical insurance and welfare programs, monetary and non-monetary rewards, relationships, attachment to the organization, distance between living and work, social support, economic situation, and employment policy. In the questionnaire survey, some factors had no relationship with job continuity, including conservatism, employment systems, monetary rewards, and the distance between living and work. Employers and policymakers can use the findings to consider appropriate ways of supporting older workers.</p>","PeriodicalId":13531,"journal":{"name":"Industrial Health","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141579564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}