Occupational and Environmental Medicine最新文献

{"title":"Person-related work and the risk of type 2 diabetes: a Swedish register-based cohort study.","authors":"Kuan-Yu Pan, Alicia Nevriana, Melody Almroth, Daniel Falkstedt","doi":"10.1136/oemed-2025-110088","DOIUrl":"10.1136/oemed-2025-110088","url":null,"abstract":"<p><strong>Objectives: </strong>Person-related work requires workers to interact with individuals not employed at the workplace, such as clients and patients, and can cause emotional labour and conflict. These stressors may increase workers' risk of type 2 diabetes, but their impact may differ depending on the level of support received from colleagues. We aimed to examine the association between person-related work and the risk of type 2 diabetes, and the effect modification of social support at work.</p><p><strong>Methods: </strong>The study population consisted of around three million people without type 2 diabetes in Sweden in 2005, who were employed and aged 30-60 years. Three dimensions of person-related work-general contact with people, emotional demands and confrontation-and social support were respectively assessed using job exposure matrices. Patients with type 2 diabetes in 2006-20 were determined based on drug, patient and death registers. Multivariable Cox regression models were used.</p><p><strong>Results: </strong>High exposures to emotional demands and confrontation were respectively associated with 20% and 15% increased risks of type 2 diabetes in men and 24% and 20% in women. In both men and women, there was statistically significant effect modification by social support-the associations between emotional demands and confrontation and type 2 diabetes were higher among those with low social support than those with high social support.</p><p><strong>Conclusions: </strong>In both men and women, dimensions of person-related work, including emotional demands and confrontation, are associated with an increased risk of type 2 diabetes, and low social support at work seems to amplify the magnitude of these associations.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"161-167"},"PeriodicalIF":3.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12322397/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144485288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Employer compliance with OSHA requirements for immediate reporting of severe injuries.","authors":"Lee S Friedman, Linda Forst, Brett Shannon, Chibuzor Abasilim, Dana Madigan","doi":"10.1136/oemed-2025-110074","DOIUrl":"10.1136/oemed-2025-110074","url":null,"abstract":"<p><strong>Objectives: </strong>In 2014, US Occupational Safety and Health Administration (OSHA) updated a rule requiring employers to directly report all hospitalisations, amputations and eye enucleations to OSHA within 24 hours and within 8 hours for fatalities and multiple injury events. Past studies have shown that employers under-report injuries and illnesses for numerous reasons.</p><p><strong>Methods: </strong>This study evaluated the completeness of required immediate reporting of severe injuries and illnesses by employers to OSHA by linking cases reported to OSHA with hospital data from 1 January 2017 to 31 December 2023. We evaluated factors associated with failure to report severe injuries or illnesses to OSHA using multivariable logistic regression.</p><p><strong>Results: </strong>We identified 7578 non-fatal occupational injuries and illnesses and an additional 160 fatalities treated in Illinois hospitals that were not reported to OSHA. The cumulative reporting rate for non-fatal injuries was 39.7%, while non-fatal illnesses (excluding COVID-19 cases) was 25.1%. There was no significant change in reporting rates over the 7-year period for non-fatal injuries and illnesses. Failure to report serious injuries and illnesses was associated with hospitalisations involving acute illnesses (adjusted OR (aOR)=2.60), female workers (aOR=1.29) and incidents occurring on weekends (aOR=2.21) and holidays (aOR=1.98). We also identified factors associated with improperly reporting cases that did not meet the OSHA reporting criteria.</p><p><strong>Conclusions: </strong>We estimate that failure to report these hospitalisations obscured up to 2122 violations in Illinois workplaces that could have led to remediation to protect other workers from injury. This analysis informs compliance assistance programmes that address reporting practices and record-keeping policy.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"148-156"},"PeriodicalIF":3.9,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12088877/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143803927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does radon cause diseases other than lung cancer? Findings on mortality within the German uranium miners cohort study, 1946-2018.","authors":"Nora Fenske, Veronika Deffner, Maria Schnelzer, Michaela Kreuzer","doi":"10.1136/oemed-2024-109923","DOIUrl":"10.1136/oemed-2024-109923","url":null,"abstract":"<p><strong>Objectives: </strong>This analysis aimed at investigating the relationship between death from diseases other than lung cancer and radon exposure in the German uranium miners cohort study with follow-up data from 1946 to 2018.</p><p><strong>Methods: </strong>The cohort includes 58 975 men who were employed between 1946 and 1990 at the former 'Wismut' uranium mining company in Eastern Germany. Occupational exposure to radon progeny in working level month (WLM) was retrospectively assessed using a comprehensive job-exposure matrix. Based on internal Poisson regression, excess relative rates (ERRs) per 100 WLM were estimated for cumulative lagged exposure to radon for numerous outcomes. Sensitivity analyses examined possible confounding by occupational exposure to silica dust and gamma radiation.</p><p><strong>Results: </strong>Small but statistically significantly increased excess rates were found for the group of all cancers other than lung cancer (n=6126; ERR/100 WLM=0.014 (95% CI 0.007; 0.022)) and for ischaemic heart diseases (n=6182; 0.010 (95% CI 0.003; 0.016)). The increase in risk was particularly observed at very high exposure levels. No clear association between radon exposure and other causes of death, comprising other subgroups of circulatory system diseases, non-malignant respiratory diseases excluding pneumoconiosis, neurodegenerative diseases and the many considered individual cancer sites was present. Notable were the estimates for myeloid leukaemia (n=114; 0.076 (95% CI -0.011; 0.164)) and pharynx cancer (n=112; 0.070 (95% CI -0.041; 0.182)).</p><p><strong>Conclusions: </strong>The findings of the Wismut cohort indicate small increased risks for a few selected outcomes. Overall, the study does not provide convincing evidence for an increased risk for other diseases than lung cancer due to radon.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"112-119"},"PeriodicalIF":3.9,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12171518/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144005220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occupational differences in COVID-19 hospital admission and mortality risks between women and men in Scotland: a population-based study using linked administrative data.","authors":"Serena Pattaro, Nick Bailey, Chris Dibben","doi":"10.1136/oemed-2024-109562","DOIUrl":"10.1136/oemed-2024-109562","url":null,"abstract":"<p><strong>Objectives: </strong>Occupations vary with respect to workplace factors that influence exposure to COVID-19, such as ventilation, social contacts and protective equipment. Variations between women and men may arise because they have different occupational roles or behavioural responses. We estimated occupational differences in COVID-19 hospital admission and mortality risks by sex.</p><p><strong>Methods: </strong>We combined (1) individual-level data from 2011 Census with (2) health records and (3) household-level information from residential identifiers, using a Scottish cohort of 1.7 million adults aged 40-64 years between 1 March 2020 and 31 January 2021. We estimated age-standardised COVID-19 hospital admission and mortality rates, stratified by sex and occupation. Cox proportional hazards models were adjusted for pre-pandemic health and occupational exposure factors, including interaction effects between occupation and sex.</p><p><strong>Results: </strong>Women had lower age-standardised COVID-19 hospital admission and mortality rates than men. Among women, adjusted death risks were lowest for health professionals, and those in associate professional and technical occupations (paramedics and medical technicians), with the latter supported by results from the interaction model. Among men, elevated adjusted admission and death risks were observed for large vehicle and taxi drivers. Additionally, admission risks remained high among men in caring personal services (including home and care workers), while elevated risks were observed among women in customer service occupations (call centre operators) and process, plant and machine operative roles (assemblers and sorters).</p><p><strong>Conclusions: </strong>Occupational differences in COVID-19 hospital admission and mortality risks between women and men highlight the need to account for sex differences when developing interventions to reduce infections among vulnerable occupational groups.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"128-137"},"PeriodicalIF":3.9,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12171494/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144013754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A less detailed job axis in a quantitative job-exposure matrix results in a similar exposure-response association.","authors":"Johan Ohlander, Susan Peters, Hans Kromhout","doi":"10.1136/oemed-2024-109702","DOIUrl":"10.1136/oemed-2024-109702","url":null,"abstract":"<p><strong>Introduction: </strong>Quantitative job-exposure matrices (JEMs) have been developed to assign exposure using International Standard Classification of Occupations (ISCO)-68 coded job information. For extended compatibility with the less detailed ISCO-88 coding, a quantitative JEM using the same underlying model was developed. We compared exposure-response relationships between cumulative respirable crystalline silica (RCS) and lung cancer risk using a quantitative JEM based on ISCO-88 (88-JEM) and ISCO-68 (68-JEM).</p><p><strong>Methods: </strong>Based on a common set of approximately 15 000 RCS measurements, job-specific, region-specific and time-specific exposure levels were estimated for the 88-JEM and the 68-JEM and linked to participants' job histories. Exposure-response relationships in an international lung cancer case-control study were analysed by logistic regression and generalised additive models.</p><p><strong>Results: </strong>The 88-JEM and the 68-JEM yielded similar RCS-lung cancer associations, with elevated lung cancer risks across each cumulative exposure quartile. The 88-JEM exhibited a minor not statistically significant upward bend in the exposure-response curve at higher exposures.</p><p><strong>Conclusion: </strong>To accurately detect associations between disease risk and occupational exposure, quantitative JEMs can be applied in community-based studies that provide job histories in either ISCO-88 or ISCO-68.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"157-160"},"PeriodicalIF":3.9,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12171522/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143692830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploratory research on occupational exposures and breast cancer risk in the CECILE study.","authors":"Lisa Leung, Anita Koushik, Emilie Cordina-Duverger, Jack Siemiatycki, Pascal Guénel","doi":"10.1136/oemed-2024-110021","DOIUrl":"10.1136/oemed-2024-110021","url":null,"abstract":"<p><strong>Objectives: </strong>In 'exploratory mode', to examine associations between occupational exposure to 49 prevalent agents and breast cancer risk.</p><p><strong>Methods: </strong>In a French population-based case-control study on breast cancer (2005-2007), lifetime occupational histories of 1230 incident cases and 1315 controls were collected. An industrial hygienist coded each job held by a participant. Job codes were subsequently linked to the Canadian job-exposure matrix, and exposure level estimates for numerous agents were generated. Multivariable unconditional logistic regression was used to estimate associations between occupational exposure to 49 prevalent agents and breast cancer risk, adjusting for established breast cancer risk factors and selected sociodemographic covariates.</p><p><strong>Results: </strong>Increased ORs, ranging between 1.33 and 2.39, were observed for women in the highest tertile of cumulative exposure versus unexposed for the following 12 agents: sodium carbonate, synthetic fibres, wool fibres, silk fibres, organic dyes and pigments, plastic dusts, plastics pyrolysis fumes, ozone, nitrogen oxides, anaesthetic gases, aliphatic ketones and mononuclear aromatic hydrocarbons. When stratified by menopausal status, the ORs for many of these agents were stronger among premenopausal versus postmenopausal women.</p><p><strong>Conclusions: </strong>These findings suggest the possible role of some occupational agents in the aetiology of breast cancer. Further studies, based on large sample sizes and high-quality exposure assessment, are needed to confirm our findings.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"139-147"},"PeriodicalIF":3.9,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144079332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical workload during pregnancy and adverse pregnancy outcomes: results from a Danish nationwide occupational register-based pregnancy cohort (DOC*X-Generation).","authors":"Camilla Sandal Sejbaek, Hannah Nørtoft Frankel, Esben Meulengracht Flachs, Karin Sørig Hougaard, Ingrid Sivesind Mehlum, Sandra Soegaard Toettenborg, Ida E H Madsen, Jens Peter Ellekilde Bonde, Luise Moelenberg Begtrup","doi":"10.1136/oemed-2024-109908","DOIUrl":"10.1136/oemed-2024-109908","url":null,"abstract":"<p><strong>Objectives: </strong>The objective was to investigate if high physical workload during pregnancy is associated with adverse pregnancy outcomes.</p><p><strong>Methods: </strong>The register-based cohort, DOC*X-Generation included employed pregnant women in Denmark (1977-2018). A summary score of physical workloads, based on a job exposure matrix with eight physical work activities, was linked to the job held during pregnancy (coded by DISCO-88). The exposure was divided into five groups from low to high exposure. Data on miscarriages were retrieved from the Danish National Patient Register. Preterm birth (PTB) and small for gestational age (SGA) were determined by gestational age and birth weight from the Danish Medical Birth Register. Other nationwide registers provided data on potential confounders.</p><p><strong>Results: </strong>We included pregnancies for approximately 1 million unique women where 13% terminated in miscarriages (of ~1.9 million pregnancies), 5% were PTB (of ~1.5 million pregnancies) and 13% were SGA (of ~1.6 million pregnancies). Employment in occupations with high physical workload was associated with increased risk of all three outcomes in a dose-dependent manner. For the highest compared with the lowest exposed group, adjusted ORs were 1.24 (95% CI 1.22 to 1.27) for miscarriage, 1.15 (95% CI 1.12 to 1.19) for overall PTB and 1.12 (95% CI 1.10 to 1.14) for SGA.</p><p><strong>Conclusions: </strong>This study, based on an unselected cohort of employed women over a 40-year period, corroborates previous findings of an increased risk of adverse pregnancy outcomes due to high physical workload during pregnancy. A general recommendation to decrease the overall occupational workload of pregnant women might prevent adverse pregnancy outcomes.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"53-60"},"PeriodicalIF":3.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143458902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of sedentary behaviour reduction on desk-worker workplace satisfaction, productivity, mood and health-related quality of life: a randomised trial.","authors":"Tyler D Quinn, Subashan Perera, Molly B Conroy, John M Jakicic, Matthew F Muldoon, Kimberly A Huber, Abdullah B Alansare, Anthony J Holmes, Bethany Barone Gibbs","doi":"10.1136/oemed-2024-109868","DOIUrl":"10.1136/oemed-2024-109868","url":null,"abstract":"<p><strong>Objectives: </strong>Sedentary behaviour (SB) is related to lower worker health-related quality of life (HRQOL), mental health and productivity. However, it is unknown whether reducing SB improves these outcomes. This study assessed whether a 3-month SB reduction intervention improved or was associated with dose-response changes in workplace satisfaction, productivity, mood and HRQOL.</p><p><strong>Methods: </strong>Inactive desk workers with elevated blood pressure were randomised to a 3-month SB reduction intervention (n=135) or control (n=136). The intervention used a sit-stand desk, wrist-worn activity prompter and bi-monthly individual coaching to primarily replace work SB with standing and stepping. SB measured via a thigh-mounted activPAL3 micro, workplace satisfaction, productivity, mood and HRQOL were assessed at baseline and 3 months. Analyses of covariance compared changes in outcomes between groups with adjustment for baseline values. In both groups, associations between changes in work and non-work SB and outcomes were examined using linear regression.</p><p><strong>Results: </strong>Compared with control, reducing SB did not significantly change workplace satisfaction, productivity or HRQOL. Among mood measures, only vigour improved (1.01 vs 0.1 points, p=0.0302). Among all participants, reductions in non-work SB were associated with improvements in workplace satisfaction (+0.15 and +0.27 points/hour of non-work standing and stepping, respectively) and productivity (+0.47 points/hour of non-work stepping), while changes in SB during work were not related.</p><p><strong>Conclusions: </strong>Interventions reducing non-work rather than work SB may be more impactful for improving workplace satisfaction and HRQOL outcomes. Future studies should explore workplace-based SB reduction interventions that are longer and target non-work time to improve similar outcomes.</p><p><strong>Trial registration number: </strong>NCT03307343.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"61-68"},"PeriodicalIF":3.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143516270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cancer incidence in male and female Canadian Armed Forces personnel and Veterans enrolled between 1976 and 2016: a retrospective population-based cohort study.","authors":"Andrea Marie Jones, Yvon Daniel Cousineau-Short, Chrissi Galanakis, Deborah Weiss, Amy L Hall","doi":"10.1136/oemed-2024-109924","DOIUrl":"10.1136/oemed-2024-109924","url":null,"abstract":"<p><strong>Objectives: </strong>To describe rates of overall and type-specific primary cancers in Canadian Armed Forces (CAF) personnel and Veterans with a first enrolment in the CAF between 1976 and 2016, with comparisons to the Canadian general population (CGP).</p><p><strong>Methods: </strong>This retrospective cohort study linked CAF administrative data to national cancer registries. Primary cancer diagnoses were ascertained from 1976 to 2017. Using age, year and sex-specific rates from the CGP, SIRs and 95% CIs were calculated by sex for all cancers combined and specific cancer types. Subgroup analyses were conducted for service status, rank and international deployment.</p><p><strong>Results: </strong>Among 210 910 male and 34 940 female CAF personnel and Veterans, 6415 and 1620 incident primary cancer cases were observed, respectively. For cancers overall, CAF personnel and Veterans had lower or similar risk compared with the CGP. Subgroup analyses indicated lower or similar risk compared with the CGP for most cancer types but elevated risk for melanoma in male and female personnel, officers, deployers and male senior non-commissioned members (NCMs); lung and bronchus cancer in male and female junior NCMs; pancreatic cancer in male junior NCMs; testicular cancer in male officers; and cervical cancer in female junior NCMs and non-deployers.</p><p><strong>Conclusion: </strong>CAF personnel and Veterans had lower or equal rates of cancer overall compared with the CGP. Elevated rates were observed for certain cancers within subgroups. Further research to examine time trends and risk factors for cancer outcomes in this population is recommended.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"90-97"},"PeriodicalIF":3.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143616595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vitamin D levels in Portuguese Navy military personnel: a cross-sectional study.","authors":"Moisés Henriques, Florentino Serranheira, Susana Viegas, Ema Sacadura-Leite","doi":"10.1136/oemed-2024-109968","DOIUrl":"10.1136/oemed-2024-109968","url":null,"abstract":"<p><strong>Objectives: </strong>Evaluate vitamin D levels in Portuguese active-duty Navy military personnel during winter and explore the relationship between Navy occupational settings and vitamin D levels, as well as between vitamin D levels and fatigue, sleep health, and burnout.</p><p><strong>Methods: </strong>All active-duty Navy military personnel who collected a blood sample at the Naval Medicine Centre during the winter of 2023-2024 were included in a cross-sectional study. Serum 25-hydroxy-vitamin D (25(OH)D), calcium, phosphorus and parathyroid hormone were added to their analysis request. They were asked to complete a questionnaire that included questions about work, sun exposure, vitamin D-rich foods and/or vitamin D supplements or medication intake, fatigue, sleep health and burnout. Blood samples were processed at the Clinical Pathology Service of the Portuguese Armed Forces Hospital. T-test/median test and z-test were applied to compare homologous means/medians and prevalences, respectively.</p><p><strong>Results: </strong>Of the 735 participants, 42.2%, 41.1% and 16.7% were vitamin D deficient, insufficient and sufficient, respectively. The median serum 25(OH)D level was significantly lower (p<0.001), and vitamin D deficiency prevalence was significantly higher (p=0.000) in 'onboard' and 'indoors' groups, as well as in the 'mixed shifts' group (p=0.030; p=0.004). Median serum 25(OH)D level was not statistically different between groups with and without fatigue, poor sleep health, and personal or work-related burnout.</p><p><strong>Conclusions: </strong>The high prevalence of vitamin D deficiency in a sample of Portuguese active-duty Navy military personnel, during winter, especially those working onboard, indoors and with mixed shifts, must be addressed by Navy occupational health services. Future research should include submariners.</p>","PeriodicalId":19459,"journal":{"name":"Occupational and Environmental Medicine","volume":" ","pages":"76-82"},"PeriodicalIF":3.9,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143503063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}