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We aimed to investigate the association between air pollution concentration levels and hospital admissions for heart failure (HF) among older adults in metropolitan cities in South Korea. We used hospital admission data of 1.8 million older adults in seven metropolitan cities from 2008 to 2016, derived from the National Health Insurance Service of South Korea. Daily HF admission data were linked to air pollutants concentrations for the respective dates, including particulate matter less than 2.5 μm in size (PM2.5), 10 μm (PM10), sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), and ozone. We estimated the association between air pollutants and daily HF admissions using quasi-Poisson generalized additive models for each city. During the study period, 142,490 hospital admissions for HF were noted. Increases of 10 μg/m3 of PM2.5 and PM10, and 10 ppb of SO2, NO2, and CO were associated with an increased risk of HF admission by 0.93% ([95% confidence intervals 0.51–1.36], 0.55% [0.31–0.80], 6.04% [2.15–10.08], 1.10% [0.38–1.82], and 0.05% [0.01–0.09]), respectively, on the same day. Increases in mean exposure to PM2.5, PM10, and SO2 for 8 days from the concurrent day were also significantly associated with HF admissions. During the warm season, the risk of HF admissions increased shortly after an increase in PM2.5, whereas prolonged effects were observed during the cold season. Our study suggests the adverse effects of air pollution on HF. Moreover, the evidence of seasonality may help tailor protection guidelines for older adults.

Objectives Globally, several strategies for compliance testing and within-group exposure variability have been suggested. This study aimed to evaluate the performance of the South African Mining Industry Code of Practice (SAMI CoP) approach for grouping and compliance testing against international standards. Methods A total of 28 homogenous exposure groups (HEGs) with 728 underground coal mine workers’ eight-hour time-weighted average coal dust concentration data were obtained. Compliance testing was assessed using 10% exceedance above occupational exposure limit (OEL) for SAMI CoP, and the 95th percentile of the lognormal distribution was computed for the European Standardization Committee (CEN) and American Industrial Hygiene Association (AIHA). Comparison of the homogeneity of the HEGs was done between SAMI CoP which mandates that both the arithmetic mean (AM) and 90th percentile must fall in the same exposure band to certify homogeneity and the global geometric standard deviation (GSD) and Rappaport ratio (R-ratio) with specific acceptability criteria. To test the homogeneity of exposure within job titles, eight non-homogenous HEGs that have two or more job titles with three measurements were investigated using GSD and the SAMI CoP criteria. Results A total of 21 HEGs out of 28 were non-compliant to the OEL across SAMI CoP, CEN, and AIHA criteria. Compliance to the OEL was observed for seven HEGs according to the SAMI CoP approach, whereas only one HEG was compliant according to both the SAMI CoP and CEN approaches. The GSD criterion and SAMI CoP revealed that 11 and 6 HEGs were homogenous, respectively, and only on 4 occasions, the 2 approaches agreed. The job titles of the majority of non-homogenous HEGs in both SAMI CoP and GSD were actually homogenous. Five out of 10 sub-groups have their AM above that of HEG B. Other HEGs had at least one of their AM and 90th percentile values above that of their respective parent HEGs. Conclusions All three approaches mainly confirmed non-compliance of HEGs. SAMI CoP tended to show compliance of HEGs more than CEN. Non-homogenous HEGs had many job titles that were homogenous according to both SAMI CoP and GSD criteria. There was no perfect agreement of homogeneity by all the indicators. For both future constitutions of HEGs as well as a retrospective assessment of high exposure groups, homogeneity can be improved by using job titles.

Mutual adaptation and inter-changeability of system elements are very important prerequisites for machines, technical devices and products. Similar to that technical compatibility which can be achieved by standards and regulations, optimum design of human-oriented workplaces or a man-machine system cannot be attained without, e.g., a compatible arrangement of connected displays and controls. Over and above those stimulus/response relations, all technical elements and interfaces have to be designed in such a way that they do not exceed human capacity in order to optimize human well-being and overall system performance. Compatibility between the properties of the human organism on the one hand, and the adaptable technical components of a work system on the other hand, offers a great potential of preventive measures. Examples of ergonomically designed working tools show that compatibility is capable of reducing the prevalence of occupational diseases and repetitive strain injuries as well as leading to lower physiological cost in such a way that the same output results from a lower demand of human resources or even a higher performance will be attained. Compatibility also supports the quick perception and transmission of information in a man-machine system, and as a result of lower requirements for decoding during information processing, spare mental capacity may enhance occupational safety. In the field of software, compatibility also helps to avoid psychological frustration. All in all, the center core competency, which reflects the major significant function of the ergonomist in work design, consists in determining the compatibility of human capacity and planned or existing demands of work. In order to provide efficient working tools and working conditions as well as to be successful in occupational health and safety, ergonomics and industrial engineering in the future are expected to pay more attention to the rules of compatibility. Applied in an appropriate way, these rules may convince people that ergonomics can be a powerful means for reducing prevalence of occupational diseases and complaints, and has a positive effect on overall system performance. Besides presenting examples of work design according to the principle of compatibility, also methods will be shown which enable the assessment of the ergonomic quality of hand-held tools and computer input devices.

Objectives Occupational exposure to wood dust can cause respiratory diseases, but few studies have evaluated the impact of declining exposure on health outcome. This study aimed to investigate whether a decline in wood dust exposure between two cross sectional studies performed in 1997–1998 and 2003–2004 was related to the prevalences of respiratory symptoms among woodworkers in a well-defined geographical area. Methods Two thousand and thirty-two woodworkers from 54 plants in study 1 and 1889 woodworkers from 52 plants in study 2 returned a questionnaire on respiratory diseases and symptoms, employment and smoking habits. Current individual wood dust exposure level was assessed from 2 study specific job exposure matrix’s based on task, factory size and personal passive dust measurements (2217 in study 1 and 1355 in study 2). Results The median (range) of inhalable dust was 1.0 mg/m3 (0.2–9.8), 0.6 mg/m3 (0.1–4.6) in study 1 and study 2, respectively. In study 2, the prevalence’s of self-reported asthma was higher and the prevalence’s of respiratory symptoms were lower compared to study 1. In adjusted logistic regression analyses using GEE methodology to account for clustering, dust exposure level could explain the differences in prevalence of coughing, chronic bronchitis and nasal symptoms between study 1 and study 2, while no effect was found for asthma. Conclusions A 40% decline in wood dust exposure in a 6 year period may serve as an explanation for the decline in most respiratory symptoms, but do not seems to impact the prevalence of self-reported asthma.

Homemade cloth masks and other improvised face coverings have become widespread during the COVID-19 pandemic driven by severe shortages of personal protective equipment. In this study, various alternative (mostly common household) materials, which have not traditionally been used in respiratory protective devices, were tested for particle filtration performance and breathability. Most of these materials were found of some-but rather limited-utility in facemasks. At a breathing flow rate of 30 L min-1, 17 out of 19 tested materials demonstrated collection efficiency below 50%; at 85 L min-1, only one material featured particle collection efficiency above 50%. Pressure drop values were mostly below 4 mm w.g. (observed in 89% of cases for the two flow rates), which provides comfortable breathing. Only for one fabric material (silk) tested at 85 L min-1 did the pressure drop reach 11 mm w.g. Based on these results, a three-layer facemask prototype was designed and fabricated comprised of the best performing materials. Additional tests were conducted to examine possible particle detachment/shedding from the materials used in the newly developed facemask, but no such phenomenon was observed. The prototype was evaluated on 10 human subjects using the standard OSHA-approved quantitative fit testing protocol. The mask protection level, determined as an adopted fit factor, was found to lie between that of the two commercial surgical/medical masks tested for comparison. A 10-cycle washing of the mask prototype lowered its collection efficiency across the particle size range; however, washing did not substantially affect mask breathability. The study revealed that although homemade masks offer a certain level of protection to a wearer, one should not expect them to provide the same respiratory protection as high-end commercial surgical/medical masks or-by any means-NIOSH-certified N95 filtering facepieces.

Thallium exposure has been associated with female reproductive health, but little is known about its potential association with premature ovarian insufficiency (POI). In this study, a total of 169 patients with POI and 209 healthy women were recruited from Zhejiang province, China. Urinary thallium concentrations were significantly positively associated with the risk of POI [adjusted odds ratio (OR) = 1.63, 95% CI: 1.25-2.13, p < 0.001], geometric mean values of which were significantly higher in POI cases (0.213 μg/L, 0.302 μg/g for creatinine adjustment) than those of controls (0.153 μg/L, 0.233 μg/g for creatinine adjustment). Furthermore, the serum levels of follicle-stimulating hormone and luteinizing hormone were positively associated with urinary thallium concentrations, whereas anti-Mullerian hormone and estradiol were negatively correlated with thallium. To the best of our knowledge, this is the first study to provide evidence that thallium exposure at currently environmental levels is the potential risk factor for POI in women.

Objectives This research aims to determine the need and extent for a national anthropometry survey of law enforcement officers (LEOs) via an exploratory investigation of anthropometric changes of LEOs in four decades and comparisons of the LEO data with three existing military and civilian anthropometry sources. Background The best available anthropometric dataset of LEOs is 45 years old and has largely become outdated due to demographic changes. Assessing the extent of anthropometric changes of LEOs through a sample and evaluating the differences of the sample against existing anthropometric datasets is a step toward ascertaining the necessity for a national LEO anthropometry study. Method Thirty-two body dimensions of 67 regional male LEOs and seven female LEOs were measured, and the data of males were compared with the best available LEO anthropometry data from 1975 and three recent non-LEO anthropometry databases. Results Anthropometric dimensions were significantly different between this LEO study and existing data sources, especially in chest circumference and body weight. Most of the significant differences are important differences for LEO protective gear and vehicle design. Conclusion The study confirmed that the existing 45-year-old LEO dataset and recent Army and civilian datasets would not be suitable for armor and equipment design for the current LEO population. Application The study results are useful in supporting the decision of investing in a national LEO anthropometry survey and for equipment manufacturers to recognize the distinctiveness of LEO anthropometry from other populations and the magnitude of anthropometry changes of LEOs over the past 45 years.

Background A well-designed shift schedule has been reported to have a positive effect on improving health problems associated with shift work. This study aimed to identify compliance with the 17 recommendations on work schedule (WSRs) for shift nurses and related factors. Methods The descriptive study was conducted with 182 nurses who worked in three shifts for more than 1 year at superior general and general hospitals in three regions. Data were collected with self-administered questionnaire and 13-week work schedule tables, and analyzed with both person- and cycle-based compliance. Results Person-based compliance was 11.77 among 17 items in total. However, no one completely complied with WSRs of “no work on weekends” and which showed the lowest cycle-based compliance (22.3%). Compliance with some WSRs was related to hospital type, proportion of nurses in school and having standards on work schedule at institutional level. Conclusion Compliance with WSRs of shift nurses in Korea is still unsatisfactory, and one day off after night shift and work on weekend are quite common. Hospitals should keep the standards on work schedule, monitor compliance with standards, and try to introduce modified shift systems to improve the current problems.

Silicosis is a diffuse interstitial lung disease caused by sustained inhalation of silica and silicates. Several cytokines are activated by their inhalation and can mediate the process of pulmonary fibrosis. The identification of biomarkers could allow an early diagnosis before the development of radiological alterations and help monitor the evolution of patients. The objetive of this study was to determine the clinical significance of specific biomarkers, to estimate their association with the development, severity and/or progression of silicosis, and identify determinants of this evolution. We conducted a prospective observational study in patients attending the pulmonology clinic from 2009 to 2018. Serum levels of the following inflammatory mediators were assessed: interleukin-6 (IL-6), interleukin 2 receptor subunit alpha (IL2R) interleukin 1 beta (IL1B), interleukin-8 (IL-8), tumour necrosis factor-alpha (TNF-α), transforming growth factor-beta1 (TGF-β1), alpha-1 antitrypsin (AAT), C-reactive protein (CRP), lactate dehydrogenase (LDH) and ferritin in subjects exposed to silica, with and without silicosis. Association between those inflammatory mediators with lung function measurements and radiological severity of disease and their impact on prognosis were analysed. 337 exposed to silica (278 with silicosis) and 30 subjects in the control group were included. IL-8, α1AT, ferritin, CRP and LDH levels were higher in silicosis than in those exposed to silica without silicosis. IL-8, LDH and AAT levels were associated with progression of silicosis and IL-6, IL-8, LDH, AAT, ferritin, and CRP with vital status. The results of the ROC analysis indicated the potential of IL-8 as a biomarker in the presence of silicosis and for the prediction of mortality.

Objective Depressive symptoms are a leading cause of disability retirement and sick leave. The aim of this study was to assess the risk of depressive symptoms in German employees and its associations with factors from both the occupational and the non-occupational domain and gender. Methods In the second wave of the German Study of Mental Health at Work (SMGA), a representative sample of 2640 German employees (52% women) was studied. Depressive symptoms were assessed with the PHQ-9 questionnaire. Psychosocial occupational and non-occupational conditions were assessed with quantitative interviews. In this cross-sectional sample, the association of these factors with depressive symptoms was examined using logistic regression models. Results Factors from both the occupational and the non-occupational domain were associated with risk of depressive symptoms. Low appreciation from superior (ORmen 2.1 (95% CI 1.2–3.7); ORwomen 3.2 (95% CI 2.1–4.8)), low job control (ORmen 2.9 (95% CI 1.6–5.4); ORwomen 1.6 (95% CI 1.0–2.5)), and critical life events (ORmen 3.0 (95% CI 1.6–5.4); ORwomen 2.3 (95% CI 1.5–3.7)) had the strongest association with risk of depressive symptoms. The association with quantitative demands was stronger in caregivers than in non-caregivers. The results indicated possible differences in the associations of working conditions between men and women, and between family caregivers and non-caregivers. Conclusion Factors from both work and private life are associated with depressive symptoms, especially appreciation, job control, and critical life events. Gender differences, with respect to appreciation and influence at work, suggest a more gender sensitive approach to psychosocial occupational health research and interventions.

This paper presents a preliminary concept for a ‘Mobile Phone App’ providing training in mindful hand hygiene integrated with the WHO hand hygiene protocol. A range of human factors action research methods were used to specify the preliminary concept. This includes stakeholder interviews, workshops, and participatory co-design/evaluation sessions. Mindfulness enables HCW to focus on the correct procedure for HH, along with addressing the need for self-care. The proposed Mobile Phone App enables training in mindful HH, from home. Mindful HH training forms parts of a wider learner journey which includes addressing self-care and training in PPE donning and doffing. Mindfulness is an inexpensive strategy to reduce stress and improve the quality of the working lives of healthcare workers. However, it is not a substitute for professional counselling services.

Healthcare workers (HCWs) can be considered at an increased risk of developing occupational contact dermatitis (OCD) due to repetitive hand washing with soaps and disinfectants and extended use of gloves for many hours during the day. The aim of this study was to summarize the incidence of OCD in HCWs. We searched the databases PubMed/Medline (1980-present), EMBASE (1980-present) and Cochrane Library (1992-present) through May 2020 using the search term "incidence of contact dermatitis in healthcare workers" according to Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Overall, 16 studies (six cohort; 10 register-based) with follow-up periods between 1987-2013 fulfilled the inclusion criteria. The incidence of OCD reported in studies using registers of occupational diseases ranged from 0.6 to 6.7 per 10,000 person-years. The cohort studies reported incidence from 15.9 to 780.0 per 10,000 person-years; the incidence was higher in studies which included apprentice nurses. A higher incidence was also observed amongst dental practitioners, particularly dental technicians and nurses, compared to other HCWs. Studies reporting incidence data are very scarce and results differed by study design, type of contact dermatitis, and investigated HCWs. Our study highlighted the dearth of high-quality data on the incidence of OCD and the possible underestimation of disease burden. Prospective cohort studies with harmonized designs, especially exposure assessment and outcome ascertainment, are required to provide more accurate, valid, and recent estimates of the incidence of OCD. A high incidence amongst specific occupational groups suggests the need to undertake intervention studies with a focus on prevention, particularly during pandemics such as COVID-19.

Background Noise-induced hearing loss is a well-known occupational disease that affects many fish harvesters from many fisheries worldwide, whose risk factor is prolonged exposure to hazardous noise levels. To date, academic research activities and regulatory bodies have not provided any comparative analysis among the existing methods to assess noise exposure levels of fish harvesters. This paper provides a comparison of four relevant assessment methods of noise exposure, examining the results of a measurement campaign performed onboard small fishing vessels from Newfoundland and Labrador. Methods We traveled onboard 11 vessels engaged in multiple fisheries from Newfoundland and Labrador and performed extensive noise exposure surveys using the simplified International Maritime Organization method, the full-day measurement method, and the two methods provided by ISO 9612:2009, the task-based method and job-based method (JBM). Results The results showed that the four methods yield similar values when the noise components are dominated by the engine and auxiliaries (steady-state sources); when noise components are dominated by the fishing gear, task-based method and the simplified International Maritime Organization method estimates are less accurate than JBM, using full-day measurements as baseline. Conclusion The JBM better assesses noise exposure in small-scale fisheries, where noise exposure has significant variance and uncertainties on the exposure levels are higher.

Introduction We evaluated depression and anxiety in service and sales workers from Korea who interacted with angry clients to identify factors that mediated and moderated depression and anxiety in these workers. Methods This was a secondary analysis of data from the fifth Korean Working Conditions Survey conducted in 2017. A structural equation model was used for mediation and moderation analysis. Results Service and sales workers who had more interactions with angry clients had increased risk for depression and anxiety. Experiencing clients' adverse behaviors (acute episodes) mediated the relationship between interacting with angry clients (a chronic situation) on depression and anxiety. Job satisfaction and managers' support moderated the relationship between interacting with angry clients and mental health problems. Conclusion We suggest that employers of service and sales workers should recruit staff based on their aptitude for such work, thus ensuring job satisfaction, and train them to deal with angry clients in such a way that they experience less emotional burden. Employers should also make bylaws requiring managers to directly take care of adverse social behavior by clients. Furthermore, a sociocultural campaign to prevent adverse social behavior by clients is also needed.

Purpose Occupational integration is vital for the health of all people, also for people with Limited Work Capacity (LWC). Therefore, participation in regular work is a legal right for people that are restricted in their work capacity due to a disability and/or lack sufficient education. Full and effective integration is dependent on the person-job fit, and adequate vocational support should focus on meeting performance standards, as is common practice in traditional personnel selection and development programmes. Despite the huge amount of valid instruments for personnel selection and development, these tests are not suitable people with LWC. Recently, an instrument was developed for assessment and development purposes specifically for this target group. That study provided evidence for reliability and dimensionality this instrument. In our study, we add criterion-related measures to this instrument to demonstrate that assessment at T1 predict performance at T2, thus validating the instrument. Method We conducted a four-source data study, two sources for independent and two for outcome variables, to test the predictive validity of this instrument in a multi-wave setup. Results This study largely supports the validity of the instrument in predicting work behaviour and task performance of people with LWC. More specific, when measures are tailored to this target group, this group is able to predict their work behaviour and task performance accurately just like the general population. Conclusion We conclude that this instrument contributes to science, vocational support practices, and the personal and professional development of people with LWC, which is required for sustainable work.

Objectives We examined whether frequent short-term sickness absence (FSTSA) and primary care use in occupational health service (OHS) were associated with medically-certified long-term sickness absence (LTSA) due to mental disorders among young employees. Methods We used record-linkage data covering the young employees (n = 8,282) from 2010 to 2014. The outcome was LTSA due to mental disorders. Cox regression models were fitted. Results FSTSAs were associated with subsequent LTSA. Also OHS use predicted LTSA due to mental disorders; however, this association was not found for those with prior FSTSA. Conclusions Both FSTSA and primary care use indicate subsequent LTSA independently, and together these indicators identify a larger proportion of individuals at risk of LTSA due to mental disorders.

Resume Objectif Decrire les conditions de travail des internes en medecine au cours de leur grossesse. Decrire les issues defavorables et identifier les facteurs professionnels associes a ces issues. Methode Cette etude observationnelle descriptive s’est interessee aux conditions de travail des internes enceintes mais egalement aux issues des grossesses, par l’intermediaire d’un questionnaire en ligne envoye aux 773 internes, de toutes specialites, inscrites a la faculte de Nancy, France. Resultats Trois cent un internes ont participe a l’etude (38,9 %). Le temps de travail quotidien moyen des internes etait de 9 heures, quel que soit le trimestre, avec un temps de pause qui excedait rarement une heure. Les internes ont declare continuer a faire des gardes dans 87,5 % des cas au-dela de 10 semaines d’amenorrhee, terme legal d’arret des gardes. Le taux d’issues defavorables etait de 42,6 % (23/54). Les taux de menaces d’accouchement premature et d’accouchements prematures etaient de 22,5 et 15 % respectivement. Une association significative a ete retrouvee entre des amplitudes horaires ≥ 10 h/j au 2e trimestre de grossesse et la survenue d’issues defavorables. Conclusion Un renforcement du suivi en sante au travail permettant l’amenagement des postes de travail, des campagnes d’information, ainsi que la designation de personnes-ressources au sein des facultes semblent indispensables.

Purpose This study investigated the effects of psychosocial working conditions on mental health-related long-term sickness absence and whether distress, work satisfaction, burnout, engagement, and work ability mediated the associations between psychosocial working conditions and mental health-related long-term sickness absence. Methods This cohort study included 53,833 non-sick listed workers who participated in occupational health surveys between 2010 and 2013. The effects of the individual psychosocial working conditions on mental long-term sickness absence were analyzed using univariable and multivariable logistic regression analyses. Mediation analyses were performed to examine the mediating role of distress, burnout, work satisfaction, engagement, and work ability between psychosocial working conditions and mental long-term sickness absence. The mediation analyses were performed using structural equation modeling. Results Role clarity, cognitive demands, emotional demands, work variety, learning opportunities, and co-worker support were related to mental health-related long-term sickness absence after adjustment for other working conditions. The relationship between emotional demands and mental health-related long-term sickness absence was the strongest, OR 1.304 (p Conclusions Psychosocial working conditions are related to mental health-related long-term sickness absence. After correction for other working conditions, the association between emotional demands and mental health-related long-term sickness absence was the strongest. Psychosocial working conditions are indirectly related to mental health-related long-term sickness absence through mediation by distress, work satisfaction, and work ability.

Введение. Производственная вибрация повышает риск заболеваний, обычно не относимых к заболеваниям профессионального генеза, но оказывающих влияние на здоровье. Это заболевания системы кровообращения и органов дыхания, нарушения функций печени и злокачественные новообразования. Цель. Анализ распространённости заболеваний непрофессионального генеза у лиц, имеющих диагноз профессиональной патологии, связанной с воздействием производственной вибрации в ходе работы на предприятиях и в организациях, обслуживаемых медицинскими учреждениями ФМБА России. Материалы и методы. В качестве источника информации использован «Отраслевой регистр лиц, имеющих профессиональные заболевания», с данными о 95 больных в возрасте 65,1±1,5 (90 мужчин в возрасте 64,8±1,5 лет и 5 женщин в возрасте 70,6±2,6 лет) с профессиональной патологией, причиной которой была производственная вибрация. Показатель распространённости дан из расчета на 1000 больных профессиональными заболеваниями с ошибкой интенсивного показателя и удельным весом патологии в структуре заболеваний непрофессионального генеза. Результаты . Распространенность заболеваний непрофессионального генеза у мужчин составила 7 55,6 ±9 1 , 6 . Из них чаще диагностировались болезни костно-мышечной системы 2 88,9 ±4 7 , 8; 3 9 , 4 % . Аналогичные показатели для системы кровообращения 1 77 , 8 ± 40 , 3, 2 4 , 2 % ; болезн ей дыхательной системы – 1 11,1 ±3 3 , 1 ; 1 5 , 2 % ; болезн ей органов пищеварения – 66 ,7±26, 3, 9 , 1 %. Обсуждение. В структуре заболеваний непрофессионального генеза превалируют заболевания костно-мышечной системы и заболевания, на возникновение которых могла повлиять производственная вибрация. Выводы. Из заболеваний непрофессионального генеза у мужчин, имеющих профессиональные заболевания, причинами которых стала производственная вибрация, наиболее часто выявляются заболевания костно-мышечной системы, системы кровообращения, органов дыхания и пищеварения с суммарным показателем 87,9%. Рекомендуется более точное определение профессионального или непрофессионального генеза патологий костно-мышечной системы в профессиональных центрах у лиц, контактировавших с производственной вибрацией.

The potential carcinogenicity of formaldehyde (FA) has prompted increasing preventive measures in anatomic pathology (AP) laboratories and new strategies aimed at innovating airborne FA monitoring systems. This review provides an updated overview of the most recent improvements in preventive measures, safe practices, and exposure monitoring tools in the FA usage and handling. A computer-based search of scientific and non-scientific sources was performed on PubMed, Web of Science, Google and Google Patents databases, querying the main topics of real-time, in-continuous FA monitoring instruments for sale, and commercially available tools for improving preventive measures in formalin management. In order to simplify the sampling process and to choose a better analytic solution to FA assessment, the main characteristics of each FA monitoring instrument were described. The novel technical tools recently introduced on the global market, aimed at reducing FA emissions in AP laboratories, were summarized. This review is directed at anatomic pathologists to draw their attention to the rapidly growing field of safe formalin practices. A repeated exposure assessment is recommended to evaluate technical changes in air monitoring programs to keep FA emissions low, in compliance with the limit value; thus, evolved monitoring devices are needed. Int J Occup Med Environ Health. 2021;34(3):319-38.

Despite the increase in the number of cases among South Korean sanitation workers, lung cancer as a result of exposure to occupational carcinogen has not been sufficiently investigated. This study aimed to identify exposure levels of sanitation workers to respirable crystalline silica (RCS) for various tasks and factors that affect individual RCS exposure. Exposure to RCS was assessed for 90 sanitation workers from seven companies. The obtained geometric mean value of the RCS was 2.6 µg m–3, which is a similar level to recommendations set by California’s Office of Environmental Health Hazard Assessment's Recommended Exposure Limit. Meanwhile, coal briquette ash (CBA) collectors exhibited the highest RCS concentration (24 µg m–3), followed by road cleaning workers who used a blower, municipal household waste collectors, sweepers, and drivers (p

Background Occupational health and safety (OHS) is a significant interest of all governments to prevent workplace hazards. Although appropriate legislation and regulations are essentials for the protection of workers, they are solely not enough. Application of them in practice should be secured by an efficient inspection system. Fundamental components of an inspection system are inspectors and their audit tasks. Maintaining the fair balanced task assignment among inspectors strictly enhances the efficiency of the overall system. Methods This study proposes a two-phased goal programming approach for OHS inspectors' task assignments and presents a case study. Results The solution approach gives the balanced assignment of inspectors to the workplaces in different cities of the country in the planning period. The obtained schedule takes into account the distances covered by the work places and the number of the workplaces' employees to be audited and pays attention to the human factors by considering the preferences of the inspectors. The comparisons between the obtained optimal schedule and the implemented one that is produced manually show that the approach not only maintains the technical requirements of the problem, but also provides social and physical balance to the task assignment. Conclusion Both the approach and the application study are expected to offer fruitful inspirations in the area of safety management and policy and they provide a good guide for social policy and organizational aspects in the field of OHS inspectors' task assignment.

Background Research consistently finds that, on average, firefighters gain weight over time and some data indicate that younger firefighters are more likely to gain weight than older firefighters. The purpose of this study was to estimate the 5-year weight change among younger and older US firefighters. Methods Data from two occupational medical exams separated by 5 years (2009–2016) were examined from a cohort of US career firefighters in Virginia (males, n = 589; females, n = 67). The cohort was grouped into two age categories ( 3% body weight), Stable (within ±3% body weight) and Gain (increase of > 3% body weight). Multinomial logistic regression models and linear regression models were conducted to examine differences in the probability of being in a particular weight change category, weight change overall and by weight change category between younger and older firefighters. Results At baseline, 25 and 35% of younger (P Conclusions Health care providers should be attentive to weight gain, even among young non-obese firefighters, and counsel firefighters to avoid the additive risks of being older and heavier. In addition, weight loss/management programs should be promoted in the fire service to encourage healthy body weight and to prevent unhealthy weight gain among both young and old firefighters alike.

Purpose Alternative duty work is a procedure that enables an employee with a short-term disability to perform modified duties as an alternative to sickness absence. We examined whether the implementation of an alternative duty policy was associated with reduced sickness absence in the Finnish public sector. Methods Two city administrations (A and D) that implemented an alternative duty work policy to their employees (n = 5341 and n = 7538) served as our intervention cities, and two city administrations (B and C) that did not implement the policy represented the reference cities (n = 6976 and n = 6720). The outcomes were the number of annual days, all episodes, and short-term (< 10 days) episodes during the 2 years before versus the 2 years after the intervention year. We applied repeated measures negative binomial regression analyses, using the generalized estimating equations method and the difference-in-difference analysis to compare the intervention and control cities (adjusted for sex, age, type of job contract, occupational class). Results During the five-year study period, the number of sickness absence days and episodes increased in both the intervention and control cities. Covariate-adjusted analysis of relative risk showed that the overall increase in post- versus pre-intervention sickness absence days was smaller in intervention City A, RR = 1.14 (95% CI = 1.09–1.21) than in control cities B and C, RR = 1.19 (95% CI =1.14–1.24), group × time interaction p Conclusions This follow-up suggests that implementing an alternative duty work policy may marginally decrease employees’ sickness absences.

Background Hearing protection devices (HPDs) are often used in the workplace to prevent hearing damage caused by noise. However, a factor that can lead to hearing loss in the workplace is improper HPD fitting, and the previous literature has shown that instructing workers on how to properly insert their HPDs can make a significant difference in the degree of attenuation. Methods Two studies were completed on a total of 33 Hydro One workers. A FitCheck Solo field attenuation estimation system was used to measure the personal attenuation rating (PAR) before and after providing one-on-one fitting instructions. In addition, external ear canal diameters were measured, and a questionnaire with items related to frequency of use, confidence, and discomfort was administered. Results Training led to an improvement in HPD attenuation, particularly for participants with poorer PARs before training. The questionnaire results indicated that much HPD discomfort is caused by heat, humidity, and communication difficulties. External ear canal asymmetry did not appear to significantly influence the measured PAR. Conclusion In accordance with the previous literature, our studies suggest that one-on-one instruction is an effective training method for HPD use. Addressing discomfort issues from heat, humidity, and communication issues could help to improve the use of HPDs in the workplace. Further research into the effects of canal asymmetry on the PAR is needed.

Background A number of accidents have occurred in small and medium enterprises (SMEs). Efforts in reducing accidents have been undertaken through the implementation of safety behaviors. Unfortunately, few studies have examined motives behind unsafe behaviors, such as safety silence motives. This study aimed to observe the motives underlying safety behaviors, namely safety silence motive (SSM) (SSM-relation, SSM-climate, SSM-issue, and SSM-job) and to evaluate the effect of SSM and safety communication on safety participation in different industrial sectors and scales. Materials and Methods Eighty workers from two industrial sectors and scales of SMEs were involved. They were instructed to fill out a set of questionnaires. A five-Likert scale was used to respond. An independent t test was applied to find any significant differences. The partial least square-structural equation modeling for multigroup was used to develop a model on relations among the variables. Results The results showed that SSM scores were high in SMEs, and the scores were different across industrial sectors and scales. SSM had a negative influence on safety communication, and safety communication positively influenced safety participation. Conclusion The study of SSM, safety communication, and safety participation in different sectors and scales should be separated in SMEs.

This brief report aims to establish the keyword content of studies on occupational health and safety—the key framework of the world of work in the trade and health domain. Data were collected from the SCOPUS database, focusing on articles on occupational health and safety and related keywords, with an emphasis on abstracts and titles. Data were analyzed and summarized based on keywords included from the MeSH database. There were 24,499 manuscripts in the domain and 1,346 (5.40%) occupational health-related keywords, including those that overlapped. The most frequently referenced occupational health–related keyword was “occupational health” (452 articles), followed by “occupational safety” (141 articles). There were fewer keywords on occupational health in the trade and health literature. As the world of work has been prioritized because of the recent new normal of work life since the COVID-19 pandemic, examining the focus of occupational health priorities within the global perspective is crucial.

Epidemiological observations indicate that female flight attendants are exposed to some reproductive and endocrine system disturbances. The aim of the study was to determine the incidence of hyperprolactinemia among female flight attendants, and to identify factors affecting the secretion of prolactin in female flight attendants working within 1 time zone as well as on long-distance flights.The cross-sectional study covered 103 women aged 23-46 years. The study group (I) was divided into 2 subgroups: subgroup Ia comprising female flight attendants flying within 1 flight zone, and subgroup Ib composed of female flight attendants working on long-distance flights. The control group (II) included women of reproductive age who sought medical assistance due to marital infertility in whom the male factor was found to be responsible for problems with conception in the course of the diagnostic process. The assessment included: age, the body mass index, menstrual cycle regularity, the length of service, the frequency of flying, the prolactin, estradiol and progesterone concentrations, and the result of endometrial biopsy. Descriptive and inferential statistics methods were used to compile the data.The incidence of hyperprolactinemia in the female flight attendants (46%) was significantly higher than in the control group (9%), p0.001. Differences between subgroups Ia and Ib regarding individual concentrations were not statistically significant (p = 0.425). Hyperprolactinemia among the female flight attendants working ≥15 years is present slightly more often than in those working15 years: 46% vs. 45% (p0.05). No significant difference was revealed in the secretion of prolactin between the study participants spending60 h/month flying and those spending ≥60 h/month flying (p0.05).Hyperprolactinemia is more common in female flight attendants than in the general population. High values of prolactin concentration in flight attendants are rarely manifested in clinical symptoms. The frequency of flying and the length of service do not affect the development of hyperprolactinemia or the mean prolactin concentration. Int J Occup Med Environ Health. 2021;34(3):351-61.

Background We aimed to investigate the prevalence of low back pain (LBP) and its associated agricultural work-related, biomechanical factors among this population. Methods We analyzed initial survey data from the Safety for Agricultural Injury of Farmers cohort study involving adult farmers in Jeju Island. The prevalence of LBP was calculated with associated factors. Results In total, 1,209 participants were included in the analysis. The overall prevalence of LBP was 23.7%. Significant associations for LBP were the type of farming activity, length of farming career, prior agricultural injury within 1 year, and stress levels. Multivariate logistic regression analysis revealed three biomechanical factors significantly related to LBP: repetitive use of particular body parts; the inappropriate posture of the lower back and neck. Conclusions Some occupational, and biomechanical risk factors contribute to LBP. Therefore, postural education, injury prevention education, and psychological support will be needed to prevent LBP.

The importance of remaining in, or re-entering, the labour market is emphasised by governments internationally. While this may bring benefits, progressive disabilities such as dementia affect an individual’s employability. Although employers have legal obligations to support employees with disabilities, research suggests that employers are not providing this support to employees living with dementia and are undermining their capabilities. Drawing on interview data from 38 key informants collected over two studies, we explore the potential for supporting and promoting the employability of people living with dementia. A model of sustainable employability based on the Capability Approach is used as a lens to explore this issue. The findings demonstrate the implications of progressive disabilities for employability when the worker and their family are faced with dealing with a disability in a period of uncertainty with a lack of public and workplace understanding.

The extent to which long-term individual-oriented flexibility in working hours is associated with working beyond retirement age is not known. The aims of the present study were to identify trajectories of worktime control (WTC) and to examine whether the membership of WTC trajectories was associated with working beyond individual’s pensionable age. A total of 1,953 older employees participated in the study and had data up to 16 years before pensionable age. Group-based latent trajectory modeling was used to identify WTC trajectories and Cox proportional hazard regression models were used to examine the associations of WTC trajectories with duration of employment. Seven trajectories described WTC: “Stable very low” (7%), “Stable low” (21%), “Declined” (12%), “Stable mid-low” (28%), “Improved” (10%), “Stable high” (16%), and “Stable very high” (5%). When compared with the lowest WTC trajectory groups, trajectories of “Stable high/very high” (hazard ratio [HR] 1.34, 95% confidence interval [CI] 1.17–1.54) and “Improved” WTC (HR 1.49, 95% CI 1.25–1.78) were associated with longer duration of employment. Although the memberships of the “Stable high/very high” and “Improved” WTC trajectories correlated with gender, marital status, occupational position, and self-rated health, the association between WTC and duration of employment was not fully confounded or mediated by these factors. These findings support the hypothesis that having improved or constantly high control over working times from midlife to retirement age may prolong working lives at retirement age.

Objectives. Human factors have been identified as the most common causes of catastrophic accidents in the oil and gas industry. Therefore, this study aims to analyze human causal factors of accidents in the oil and gas industry using the human factors analysis and classification system for the oil and gas industry (HFACS-OGI) framework. Methods. This study involved quantitative data collection for 184 accident cases in the oil and gas industry that occurred from 2013 to 2017 from the International Association of Oil and Gas Producers (IOGP) database. The causal factors of these accidents were coded using the HFACS-OGI framework. Accident data were analyzed using descriptive statistics and the χ2 test. Results. Study findings reveal that 23% of all accidents were recorded in 2013. Thirty-two percent of accidents occurred in Asia, while 69% of accidents were recorded in onshore locations. Contractors were involved in 86% of accidents, while 28% of accidents occurred during drilling, workover and well services. The contractor’s work environment was the main human factor in 90% of accident cases. Conclusion. The HFACS-OGI framework proves to be a vital tool for robust accident analysis of human factors in the oil and gas industry.

ZusammenfassungDie Stärke von Schallbelastungen wird bekanntlich durch den Pegel L mit einem logarithmischen Maß angegeben. Dieses, formal richtig nach dem Weber-Fechner’schen Gesetz aufgebaute Maßstabs-System der Lautstärke in dB (Dezibel) ist allerdings alles andere als empfindungsgerecht und damit inkompatibel zum Gehör. Das zeigt sich z. B. daran, dass ein Pegel von 100 Dezibel (dB) nicht lediglich doppelt so laut empfunden wird wie ein Pegel von 50 dB. Ein solcher Messwert repräsentiert sogar das „100.000-fache“ von 50 dB, und damit eine unvorstellbar höhere Belastung. Selbst in einer nur um 3 dB höheren Belastung steckt bereits die doppelte Energie bzw. Belastung für das Gehör. Weil eben nicht das Weber-Fechner’sche Gesetz, sondern das Stevens’sche Potenz-Gesetz erwiesenermaßen Gültigkeit besitzt, sollte bei der Einstufung der Stärke von Schallbelastungen zumindest das einigermaßen empfindungsgerechte Maßstabs-System der Lautheit mit der Einheit „Sone“ Verwendung finden. Eine Zunahme des Pegels um 10 dB, die erfahrungsgemäß mit einer gefühlten Verdopplung des „Empfindens“ verbunden wird, führt dabei auch zu einer Verdopplung des Sone-Wertes. Das Benutzen des allseits bekannten „dB“ schafft nicht selten Verwirrung und führt oftmals zu gravierenden Fehleinschätzungen. In graphischen Darstellungen werden das inkompatible Maßsystem der Lautstärke und das zum menschlichen Gehör eher kompatible Maßsystem der Lautheit in „Sone“ konkretisiert und veranschaulicht. Dabei werden auch erhebliche Diskrepanzen bei der Beurteilung von Schallexpositionen aufgezeigt, die bei unterschiedlicher Höhe und Einwirkdauer mittels des Halbierungsparameters q = 3 als gleich hoch eingeschätzt werden. Auszugsweise dargestellte Ergebnisse aus umfangreichen audiometrischen Untersuchungen belegen, dass energie-äquivalente, aber zeitlich unterschiedlich verteilte Schallbelastungen von in der Arbeit noch zulässigen 85 dB(A)/8 h höchst unterschiedlich starke zeitweilige Hörschellenverschiebungen (Temporary Threshold Shifts, TTS-Werte) verursachen. Ferner wird veranschaulicht, dass auch gleich starke moderne Musikschallbelastungen von 94 dB/1 h bei otologisch normalen Probanden zu audiometrisch messbaren, ähnlich hohen Hörschwellenverschiebungen wie Industrielärm führen. Das gilt z. B. für „Heavy Metal“, „Techno“ oder auch „House Music“. Besteht die gleich starke und genauso lang anhaltende akustische Belastung jedoch z. B. aus „Klassischer Musik“, so kommt es allenfalls zu „Physiologischen Kosten“ in der Größenordnung von ca. ¼ dessen, was zum menschlichen Gehör inkompatible akustische Belastungen verursachen. Daraus ist zu folgern, dass das Gehör nach dem Motto „Der Ton macht die Musik“ mit sinusförmigen akustischen Belastungen eher „klar kommt“ (dazu kompatibel ist) als mit stochastischen und u. U. impulshaltigen Schallereignissen, wie sie durch Metall-auf Metall-Schläge auftreten oder bei Maschinengeräuschen in der Metallverarbeitung vorkommen.

Aims: This study explored the rate of transition from partial to full disability pension (DP) and aimed to determine whether age, sex, education, employment status, employment sector, pension type and medical cause of disability were associated with transition to full DP during a four-year follow-up. Methods: We used register data, including a 70% random sample of partial disability pensioners aged 20–58 at the time that their partial DP started in 2010 or 2011 ( N=5277). Competing risk analysis was used to estimate sub-hazard ratios (SHR) and their 95% confidence intervals (CI) for full DP. Results: One third of partial disability pensioners transitioned to full DP during the four-year follow-up. More than half (52%) continued on partial DP, and 15% were in some other state. Men, older people, those with low education levels, those whose pension was granted until further notice and those whose pension was due to mental disorders (MD) proceeded to full DP more often than others. The SHR for full DP was 1.62 (95% CI 1.43–1.83) among partial disability pensioners with MD and 1.15 (95% CI 1.02–1.28) among partial disability pensioners with other diseases compared to those whose pension was granted due to musculoskeletal diseases. Conclusions: Partial DP is a relatively stable state, and moving to full DP is relatively rare. However, male sex, older age, low education level, a pension granted until further notice and partial DP due to MD are important risk factors for full DP. The risk factors for ending up on full DP varies by diagnosis and pension type.

Objective. This study aimed to examine the occupational safety of oncology nurses. Methods. This cross-sectional study was conducted to examine the risks faced by oncology nurses in the units they work in and occupational safety. The data of the study were collected between April and October 2020 using an online questionnaire prepared by the researchers in line with the literature. The sample for the study consisted of 117 oncology nurses who voluntarily participated in the study and filled out the questionnaire completely. Results. More than half of the participants stated that they did not find occupational safety practices sufficient and were not given additional rights or psychological support given the risks of exposure. Conclusions. The study concluded that to improve occupational safety in oncology nurses, the physical conditions of the working environment should be improved, and up-to-date oncology and occupational safety training should be given regularly.

Zusammenfassung Ziel der Studie Die Schwerbehindertenvertretung hat eine Schlüsselrolle bei der Verwirklichung behinderungsgerechter und inklusiver Arbeitsbedingungen. Durch das Bundesteilhabegesetz wurde dem Rechnung getragen und die Rechte der Schwerbehindertenvertretung wurden ausgebaut. Ziel der vorliegenden explorativen Analyse ist es, die veränderte Rechtsstellung aus Perspektive der Schwerbehindertenvertretung zu beleuchten und Herausforderungen in der praktischen Anwendung der gesetzlichen Neuerungen sowie nicht berücksichtigte Bedarfe aufzudecken. Vor dem Hintergrund, dass Forschung zur Implementation und Evaluation der Sozialgesetzgebung Kernelemente der Rehabilitationsforschung sind, soll eine Lücke zwischen der rechtlichen Implementation und der praktischen Anwendung geschlossen und der Prozess einer lernenden Gesetzgebung vorangebracht werden. Methodik Deutschlandweit wurden 1552 Schwerbehindertenvertretungen schriftlich mittels Online-Survey befragt. Für die vorliegende Analyse wurden vorrangig die Antworten zu Herausforderungen für die Schwerbehindertenvertretung mit Hilfe der inhaltlich strukturierenden qualitativen Inhaltsanalyse nach Kuckartz ausgewertet und anhand der gesetzlichen Änderungen durch das Bundesteilhabegesetz analysiert. Ergebnisse Das Bundesteilhabegesetz wird aus Sicht der Schwerbehindertenvertretungen kritisch gewürdigt. Die Umfragedaten verdeutlichen, dass die Schwerbehindertenvertretungen die gesetzlichen Änderungen in Teilen als nicht umfassend genug bewerten. Einzelne Regelungen, wie die Heranziehung von Stellvertretern und -vertreterinnen und die Absenkung der Freistellungsgrenze, sind nicht weitreichend genug und betreffen nur die Teilgruppe der Vertretungen in großen Betrieben. Bei anderen Rechten wie dem Informations- und Anhörungsrecht fehlen Sanktionsmöglichkeiten bei Nicht-Anwendung der Gesetze durch den Arbeitgeber. Die Einführung der Unwirksamkeitsklausel in Bezug auf Kündigungen wird als nicht ausreichend bewertet. Schlussfolgerung Zwar werden die Rechte der Schwerbehindertenvertretung durch das Bundesteilhabegesetz ausgebaut, doch gibt es noch Herausforderungen bei der Umsetzung, der Präzisierung und der Verbindlichkeit der einzelnen Neuerungen, die es im Sinne einer lernenden Gesetzgebung zu beachten und weiter zu diskutieren gilt. Auf Grundlage der vorliegenden Ergebnisse bedarf es eines weiteren Einbezugs der Schwerbehindertenvertretungen, um Ansätze zur zielgerichteten Optimierung in der Anwendung sowie der Ausgestaltung der gesetzlichen Neuerungen ableiten zu können.

Among health care professionals, dentists are more prone to infection due to their direct contact with blood and saliva. This study highlights the level of compliance with infection control measures among dental students; and linked this to their knowledge and attitudes regarding infection control measures and proper vaccinations. The study is a multi-centre analytical cross-sectional survey. The sample size was 969 clinical years' students from governmental and private dental colleges in Sudan and Saudi Arabia. A pre-coded, pre-tested, and anonymous questionnaire consisted of seven categories of knowledge, attitude, awareness, and practices, including 40 questions, was answered. The study has linked knowledge, attitude, and practice in dental clinics with possible COVID-19 transmission in dental clinics. The results showed that the use of some Personal Protective Equipment was low in Sudan and moderate in Saudi Arabia (statistically significant, p < 0.001). Moderate percentage of Hepatitis B vaccination status, with low percentage of Post HBV serology, was reported (p < 0.001). The percentages of major causes of percutaneous and/or eye exposure/injury, for examples, were as follows: anesthesia (33.3-62.7%, p 0.006) and suture needle (17.5-39.4%, p 0.037). In conclusion, dental students in the present study had good knowledge and positive attitudes regarding infection control in general, but showed moderate compliance with the recommended infection control guidelines.

This article has investigated the considerations of healthcare facilities to utilize reusable respirators as an alternative to disposable respirators during the COVID-19 pandemic. The decision to choose specific equipment should be based on the protection factors and also on the overall analysis of given conditions. International scientific databases, such as Web of Science, PubMed and MedLine, were searched on May 5, 2020, with the following key words: COVID-19, respiratory protection, surgical masks, filtering facepiece respirators (FFRs) and disposable respirators. The differences between various respiratory protective equipment, i.e., surgical masks, respirators such as FFRs, elastomeric half-facepiece respirators, elastomeric full-facepiece respirators and powered air-purifying respirators (PAPRs), were compared. Reusable elastomeric respirators (RERs) may provide a better adaptation to the face and may be more stable when used by healthcare providers (HCPs). Protection factors were found to be higher in FFRs compared to surgical masks. While FFRs provide a one-tenth decrease in the inhaled aerosol concentration, PAPRs diminish the inhaled aerosol up to one-twenty-fifth. Even with some full-face PAPRs and helmets, the protection factor assigned by the Occupational Safety and Health Administration can reach a value up to 1000. For HCPs, the evidence shown in this article provides an additional support for the utilization of RERs. Such equipment might be less prone to leakages, can provide a better fit, and indicates a better stability compared to disposable FFRs (N95 and similar). By providing higher protection factors, reusable elastomeric respirators are recommended to be used by HCPs under controlled cleaning and disinfection protocols. Int J Occup Med Environ Health. 2021;34(2):307-18.

Studies on peri-urban development have not paid enough attention to the strategies and dynamics of diversifying livelihoods among indigenous women in the Global South. This paper explores the dynamics of livelihood diversification strategies among indigenous women in response to peri-urban development in Wa, Ghana. The mixed-methods design guided the study, while the sample consisted 399 respondents selected from a sample frame of 1494 women. Data analyses involved descriptive statistics, non-parametric and thematic analyses. The study found that peri-urban development had led to the loss of access to farmland among indigenous women. In response, women have resorted to switching from farm-based to non-farm-based livelihoods amidst multiple production challenges.There is, therefore, the need to support the sustainability of women’s livelihoods through the Municipal Assembly and, in particular, through policy interventions such as support for skills training and financial support to enable indigenous people to make a sustainable living. Keywords: Diversification, Ghana, Livelihoods, Peri-Urbanization, Women

Objectives This study aimed to understand the relationship between resource gains and losses, coping, and the quality of life during the growth phase of the COVID‑19 pandemic. Material and Methods The Internet-based survey covered 353 individuals who had participated in a psychological support project operated by one of the non-governmental organizations in Lublin, Poland, in the 12 months prior to the outbreak of the pandemic. The questionnaire used in the study contained questions to collect sociodemographic data and psychometric scales to measure resource gains and losses (the Conservation of Resources – Evaluation questionnaire), the quality of life (the World Health Organization Quality of Life-BREF ), and strategies of coping with the pandemic situation (a modified Brief Coping Orientation to Problems Experienced questionnaire). Results A higher global quality of life occurred with higher gains and minor losses, as well as with coping through planning, positive reframing, emotional support seeking, a reduced substance use tendency, low self-blame, avoidance, and disengagement. Moreover, helplessness-based coping strategies were found to mediate both the relationships between resource gains and the quality of life, and between resource losses and the quality of life. Conclusions Factors that may reduce people’s quality of life during the COVID‑19 pandemic are an increase in losses and limited gains, experienced over the 6 months preceding the pandemic, as well as not using active, meaning-oriented, and support-seeking coping strategies, but using avoidance behaviors instead. Coping strategies specific to people experiencing helplessness are a mediating mechanism between losses and limited gains of resources, and the quality of life. Int J Occup Med Environ Health. 2021;34(2):275–87

Objectives The SARS-CoV-2 pandemic has affected the development of negative phenomena such as anxiety symptoms, a tendency to use alcohol and aggressive behaviors. It is postulated to investigate the factors limiting the development of the indicated adverse effects. One of the psychological resources that may have a significant, pro-health character in relation to mental functioning is ego-resiliency (ER). It is described as a personality trait associated with a high ability to adequately regulate self-control, depending on the conditions. There are studies providing information about the prohealth, adaptive nature of ER during the COVID‑19 period. The aim of the study was to assess the relationships between ER and anxiety, the tendency to use alcohol and aggression in the group of Polish people in the initial lockdown period in Poland. Material and Methods Overall, 538 adult Polish people participated in the study. The Ego-Resiliency Scale referred to as ER89-R12, according to Block’s concept, was used to measure ER. The other scales used were the General Anxiety Disorder Scale , the Alcohol Use Disorder Identification Test , and the Buss-Perry Aggression Questionnaire . Statistical analyses were performed using Spearman’s rank correlation coefficient, the multiple regression procedure, the Mann-Whitney U test and the Kruskal-Wallis rank ANOVA. Cronbach’s α coefficients were also assessed. Results Statistically significant negative relationships between ER and the severity of anxiety symptoms and generalized aggression were found. There was a weak positive relationship between ER and the tendency to use alcohol. Among the surveyed Polish people, higher ER was characteristic of the older respondents (aged >29 years) and people with higher education. Conclusions Ego-resiliency in the times of the SARS-CoV-2 pandemic can counteract the development of anxiety and aggression. Optimal regulation seems to play an important role in this relationship. The relationship between resiliency and the tendency to use alcohol requires further observation. Int J Occup Med Environ Health. 2021;34(2):289–300

BACKGROUND: There are a few studies conducted on job stress dimensions and their relationship with Low Back Pain (LBP) among Iranian nurses. OBJECTIVE: The aim of the current study was to investigate the association between job stress dimensions assessed via Demand-Control-Social Support (DCS) and Effort-Reward Imbalance (ERI) models and prevalence of LBP among Iranian hospital nurses. METHODS: In this cross-sectional study, 495 randomly selected nurses of Shiraz University of Medical Sciences (SUMS) participated. Demographic/occupational questionnaire, the Persian version of the Job Content Questionnaire (P-JCQ) and the Persian version of the ERI Questionnaire (P-ERIQ) were used for data collection. Data were analyzed by SPSS software (version 19) using descriptive statistics, independent sample t-test, and logistic regression. RESULTS: The LBP prevalence was found to be 69.9%. The means±standard deviations of job stress dimensions were obtained as follows: decision latitude: 64.67±6.82, physical job demands: 15.52±2.6, social support: 23.18±3.65, psychological job demands: 38.02±4.98, effort: 8.73±2.62, reward: 23.12±5.31, over-commitment: 12.25±3.09, and effort-reward ratio: 0.86±0.3. The findings revealed that the work experience (OR = 1.56), psychological job demands (OR = 1.082), and effort-reward ratio (OR = 3.43) were predictors for LBP among the study population. CONCLUSION: The prevalence rate of LBP among studied nurses was high. About half of nurses had high psychological demands, low decision latitude and low social support. Based on the effort-reward ratio, nurses had experienced high level of stress. Interventional programs and coping strategies for reduction of work-related stress and, subsequently, prevention of LBP are recommended among hospital nurses.

ObjectivesTo examine the association of occupational exposure to high-level disinfectants (HLDs) with risk of miscarriage among nurses.MethodsOur study included women who enrolled in the Nurses’ Health Study 3 (2010–2020) and had at least one pregnancy during follow-up. Occupational exposure to HLDs was self-reported at baseline. Every 6 months, a follow-up questionnaire was sent to participants asking for detailed information on pregnancies. We used a discrete-time Cox model to calculate the HRs and 95% CIs of miscarriage according to exposure to HLDs.ResultsOur study included 2579 nurses with a median of 5.6 years of follow-up (range: 1–9 years), and we documented 768 (19%) cases of miscarriage among 3974 pregnancies. Compared with women with no HLD exposure, the HRs of miscarriage were 1.08 (95% CI: 0.87 to 1.34) for past users and 0.84 (95% CI: 0.68 to 1.04) for HLD users. Compared with women with no HLD exposure, duration, frequency, and type of HLD and use of exposure controls were not associated with risk of miscarriage. When restricting to pregnancies that occurred within 12 months of HLD use, occupational exposure to unspecified types of HLD was significantly associated with higher risk of miscarriage (HR=1.78; 95% CI: 1.08 to 2.93).ConclusionsWe observed no associations between occupational use of HLDs and miscarriage, except when we restricted to pregnancies occurring within 12 months of assessed baseline exposure. Given the observational design and limited sample size, results should be interpreted cautiously.

BACKGROUND: Rest breaks are an organizational measure to reduce the high risk of upper limb work-related musculoskeletal disorders (UL-WMSDs) to which slaughterhouse workers are subject. OBJECTIVE: To analyze the effect of different work-rest schedules on ergonomic risk in poultry slaughterhouse workers. METHODS: A total of 36 repetitive tasks was selected in a Brazilian slaughterhouse. Using the Occupational Repetitive Action (OCRA) Checklist, the level of exposure of workers to risk factors of UL-WMSDs in two work-rest schedules was evaluated. In the real condition, 6 rest breaks of 10 minutes were performed, and in the simulated condition, 3 rest breaks of 20 minutes. RESULTS: The right side of the body presented a higher score on the OCRA Checklist (72%of the tasks) than the left side (p = 0.037) in the real condition. Additionally, the OCRA score (18.3±2.5) was significantly lower (p

The paper discusses the effect of carbon dioxide (СО2) concentration in the at-mosphere on human health and issues of removing it from the atmosphere under conditions of pressurized modules of space stations. It is shown that, according to respiratory physiology, СО2 is a gas essential for human respiration, which turns into a toxic contaminant, when its concentration exceeds the threshold of 40 mm Hg (5.3 %) in human lung alveoli, and, accordingly, of 46–49 mm Hg (6.0–6.5 %) in arterial blood, what occurs probably when СО2 content in the atmosphere is ≈7.6 mm Hg (1.0 %). These nominal values, which arose at the origin of life, when CO2 content in the Earth's atmosphere was orders of magnitude greater than now, can be observed in all living things that breathe with lungs. Whenever CO2 concentrations in human air vesicles and arterial blood go below these values, the human experiences oxygen deprivation, even when there is a high oxygen concentration in the blood. The use of СО2 for breathing in medicine, aviation, and athletics also does not support the opinion that СО2 content in atmosphere below 7.6 mm Hg affects human health. Data from NASA studies of the link between СО2 levels in the ISS’s atmosphere below 6.0 mm Hg (0.8 %) and astronauts’ headaches does not prove this link. NASA’s unfounded lowering of standards for СО2 content down to 2.0–3.0 mm Hg requires an increase in the number of systems for СО2 scrubbing onboard the space station. At present, according to the minutes of AQS toxicological subpanel of the international ММОР panel, no scientifically proven standards currently exist for СО2 content in the atmosphere of space vehicles; their substantiation requires further scientific studies conducted by testers and cosmonauts.

PurposeThis research aimed to explore the prevalence of musculoskeletal disorders (MSDs) and related factors among subcontracted cleaners in a teaching hospital in Thailand.Design/methodology/approachA cross-sectional study was conducted of 393 subcontracted cleaners in a teaching hospital, from May to June 2020. Face-to-face interviews were carried out using a standard questionnaire, consisting of four parts: (1) participant characteristics, (2) stress test, (3) work characteristics and (4) standardized Nordic questionnaire, Thai version, for MSDs outcome. Multiple logistic regression analyses were performed to determine the association between MSDs and related factors.FindingsThe prevalence of MSDs was 81.9%, involving mostly the lower back (57.7%), followed by the shoulder (52.6%). Factors significantly associated with MSDs were as follows: male gender (OR = 3.06, 95% CI [1.19, 7.87]), severe stress (OR = 2.72, 95% CI [1.13, 6.54]), history of injuries (OR = 4.37, 95% CI [1.27, 15.11]), mopping posture (OR = 2.81, 95% CI [1.43, 5.50]) and task duration (OR = 1.90, 95% CI [1.01, 3.57] for 2–4 h and OR = 3.39, 95% CI [1.17, 9.86] for more than 4 h). Sick leave due to MSDs was associated with history of injuries, Thai nationality and having another part-time job.Originality/valueThe study findings about MSDs in terms of prevalence and related factors contributed to limited pool of the knowledge among subcontracted hospital cleaners in Thailand and middle-income country settings. With growing popularity in outsourcing cleaning services among hospitals in these countries, the study findings could raise a concern and inform policymakers and hospital administrators the importance of the magnitude and risk factors for MSDs necessitating design of preventive strategies.

A retrospective cohort study was carried out to investigate the mortality of workers occupationally exposed to dust containing chrysotile asbestos fibers. In its chemical and physical properties, it differs from the fibers of other types of asbestos and is the only type of asbestos that is currently approved for use in many countries of the world. The members of the cohort are current and former employees who have worked for at least one year at the production sites of the complex of enterprises for the mining and enrichment of chrysotile asbestos (JSC "Uralasbest", Asbest, Sverdlovsk region) in the period from 01.01.1975 to 31.12.2010. Of the 35,837 members of the cohort, 12,729 (35.5%) people died (2,373 of them were malignant neoplasms of various localizations, including 10 mesotheliomas), 18,799 (52.5%) were alive at the end of the observation period (2015), and 4,309 people (12.0%) were censored by the end of 2015. The mean follow-up period was 21.7 years for men and 25.9 years for women. The average age at death was 59.4 years for men and 66.5 years for women. It is currently the world's largest cohort of workers in the field.

Welding curtains and screens are intended to protect workers, other than the welder, from the effects of optical radiation generated by the welding process. The national and international standards for welding screens and curtains have different requirements. The aim is to compare the protection requirements of examples of welding curtain material and to assess compliance with the international and national standards. Spectral transmittance values (ultraviolet, visible, and infrared) of 21 samples were obtained from the records of an ISO/IES 17025 accredited test laboratory and performance/compliance was assessed according to each of the standards. In the ultraviolet, 10 samples passed and seven failed all standards. In the visible/infrared region, four samples passed and 10 failed all standards. Four samples passed the U.S. and international standards but failed the Australian/New Zealand standard in the blue-light transmittance requirement. One sample failed both the U.S. and Australian/New Zealand standards but the result for the international standard was borderline, one sample passed ISO but failed the blue-light requirements, and one failed ISO but passed the blue-light requirements. The derivations of the various requirements are not well documented. The Australia/New Zealand standard is significantly more stringent in the ultraviolet and blue-light regions. A review of the optical radiation hazards and revision of the standards are indicated. It is possible that curtains, other than those tested, that comply with the international standard might transmit hazardous levels of blue light and, conversely, adequate ultraviolet and blue-light protection is available with curtains that do not comply with the international standard.

BackgroundThe COVID-19 pandemic has led to profound shortages in personal protective equipment worldwide. The availability of filtering facepiece class 3 (FFP3) respirators could be greatly increased if they could be reused after sterilisation.AimsTo determine the effects of repeated autoclave cycles on the fit and filter function of the 3M 1863 FFP3 disposable respirator.MethodsParticipants underwent fit tests with 3M 1863 FFP3 respirators. Respirators were subjected to autoclave cycles and a repeat fit test was conducted after each cycle until failure. The filter function of both unused and autoclaved respirators was determined by quantitatively assessing the differential pressures and filter penetration of aerosolised sodium chloride particles. Mask structural inspection was also carried out by light microscopy.ResultsA total of 38 participants were recruited. Repeat fit testing with a new respirator was passed by 30 of 38 (79%) participants in comparison with 31 of 38 (82%) of participants after the respirator had undergone one autoclave cycle. There was fit test failure with further rounds of autoclave. There was no evidence of structural changes after one autoclave cycle, but the nose foam began to separate from the mask following further cycles. Filter efficiency of all 15 autoclaved respirators that underwent filter testing was 97.40% or more. Differential pressure (breathability) of respirators was unaffected by autoclaving.Conclusions3M 1863 FFP3 respirator retains good fit and filter function after a single autoclave cycle. Addressing nose foam separation and further testing to EN149 standards would be required before respirators could be considered for reuse.