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American Journal of Industrial Medicine

Alondra J Vega-Arroyo, Diane C Mitchell, Javier R Castro, Tracey L Armitage, Daniel J Tancredi, Deborah H Bennett, Marc B Schenker
BACKGROUND: The primary aim of this study was to investigate the effects of work rate, hydration status, and clothing on core body temperature (CBT) on California farmworkers. METHODS: Two hundred and eighty-seven farmworkers were recruited in Summer 2015, with 259 participants having sufficient data for analysis. We collected CBT, ambient temperature, work rate, body weight loss, and clothing worn by each participant throughout the work day and demographic data from a questionnaire...
April 9, 2019: American Journal of Industrial Medicine
Jo Steinson Stenehjem, Ronnie Babigumira, Melissa C Friesen, Tom Kristian Grimsrud
BACKGROUND: Work history data often require major data management including handling of overlapping jobs to avoid overestimating exposure before linkage to job-exposure matrices (JEMs) is possible. METHODS: In a case-cohort study of 1825 male Norwegian offshore petroleum workers, 3979 jobs were reported (mean duration 2417 days/job; maximum 8 jobs/worker). Each job was assigned to one of 27 occupation categories. Overlapping jobs of the same category (1142 jobs) were collapsed and overlapping jobs of different categories (1013 jobs) were split...
March 28, 2019: American Journal of Industrial Medicine
Sean Fitzgerald, Elizabeth Harty, Tushar Kant Joshi, Arthur L Frank
BACKGROUND: Easily available commercial Indian talc products widely used in Southeast Asia were examined for the presence of asbestos. Asbestos in talc products carry all risks of asbestos-related disease. METHODS: Using polarizing light microscopy, transmission electron microscopy (TEM), electron diffraction, and X-ray analysis, multiple over-the-counter Indian talc products were examined for the presence of asbestos. RESULTS: Results In an initial group of five Indian talc products, one was found to contain tremolite asbestos...
March 27, 2019: American Journal of Industrial Medicine
Avinash Ramkissoon, Peter Smith, John Oudyk
OBJECTIVES: To validate the factor structure of the Copenhagen Psychosocial Questionnaire (COPSOQ) in a North American population and dissect the associations between psychosocial factors and workplace psychological health and safety. METHODS: Confirmatory factor analysis and multivariate linear regression were used to determine the associations between COPSOQ dimensions and a global rating of workplace psychological health and safety. Models were stratified by sex, gender roles, and age...
March 27, 2019: American Journal of Industrial Medicine
Jennifer Vanos, Daniel J Vecellio, Tord Kjellstrom
BACKGROUND: Occupational heat exposure is a serious concern for worker health, productivity, and the economy. Few studies in North America assess how on-site wet bulb globe temperature (WBGT) levels and guidelines are applied in practice. METHODS: We assessed the use of a WBGT sensor for localized summertime heat exposures experienced by outdoor laborers at an industrial worksite in Ontario, Canada during the warm season (May-October) from 2012 to 2018 inclusive...
March 25, 2019: American Journal of Industrial Medicine
Wan-Ju Cheng, Li-Chung Pien, Yawen Cheng
OBJECTIVE: To examine the association between working hours and problem drinking in employees from different employment grades. METHODS: We used data from a national survey of randomly sampled Taiwanese workers. A total score of 2 or more on the Cut down, Annoyed, Guilty, and Eye-Opener (CAGE) questionnaire was used to identify problem drinkers. Weekly working hours were categorized into five groups: <40, 40, 41-48, 49-59, and ≥60. Employees were classified into three employment grades: managers and professionals, skilled workers, and low-skilled workers...
February 22, 2019: American Journal of Industrial Medicine
Sean R Notley, Andreas D Flouris, Glen P Kenny
Heat stress is a deadly occupational hazard that is projected to increase in severity with global warming. While upper limits for heat stress designed to protect all workers have been recommended by occupational safety institutes for some time, heat stress continues to compromise health and productivity. In our view, this is largely explained by the inability of existing guidelines to consider the inter-individual (age, sex, disease, others) and intra-individual (medication use, fitness, hydration, others) factors that cause extensive variability in physiological tolerance to a given heat stress...
February 21, 2019: American Journal of Industrial Medicine
Nathan DeBono, David Richardson, Alex Keil, Kaitlin Kelly-Reif, Whitney Robinson, Melissa Troester, Stephen Marshall
BACKGROUND: This study was carried out in response to worker concerns over their exposure to lead solder and chlorinated solvents at automotive electronics manufacturing plants in Huntsville, Alabama. METHODS: A study of 4396 United Autoworkers members ever-employed at the plants between 1972 and 1993 was conducted with mortality follow-up through 2016. Poisson regression was used to estimate mortality rate ratios (RR) according to employment characteristics, including calendar period of employment...
February 21, 2019: American Journal of Industrial Medicine
Brent Doney, Laura Kurth, Cara Halldin, Janet Hale, Steven M Frenk
INTRODUCTION: This study examined the association of spirometry-defined airflow obstruction and self-reported COPD defined as self-reported doctor diagnosed chronic bronchitis or emphysema, with occupational exposure among ever-employed US adults. METHODS: Data were obtained from the National Health and Nutrition Examination Survey (NHANES) 2007-2008 to 2011-2012, a nationally representative study of the non-institutionalized civilian US population. Reported current and/or longest held job were used to create prevalence estimates and prevalence odds ratios (PORs) (adjusted for age, gender, race, and smoking status) for airflow obstruction and self-reported COPD by occupational exposure, determined using both NHANES participants' self-reported exposures and eight categories of COPD job exposure matrix (JEM) assigned exposures...
February 18, 2019: American Journal of Industrial Medicine
Nirmala Thapa, Suzanne E Tomasi, Jean M Cox-Ganser, Randall J Nett
BACKGROUND: Non-malignant respiratory disease (NMRD) cases have occurred among rubber manufacturing workers. We examined exposure to rubber manufacturing emissions as a risk factor for NMRD. METHODS: From a systematic literature review, we identified case reports and assessed cross-sectional and mortality studies for strength of evidence of positive association (strong, intermediate, non-significant positive association, none) between exposure to rubber manufacturing emissions and NMRD-related morbidity and mortality, and conducted two meta-analyses...
February 18, 2019: American Journal of Industrial Medicine
Gabriel Chia, See Ming Lim, Gek Khim Judy Sng, Yi-Fu Jeff Hwang, Kee Seng Chia
We are on the cusp of the fourth Industrial Revolution which promises to revolutionize the way we live and work. Throughout history, as society and technology progress, so too have our workplace safety and health (WSH) strategies in regard to better knowledge and enhanced regulation. In this paper, we argue for a new WSH 4.0 strategy which requires us to adopt an adaptive and highly responsive approach to promote Total Worker Health in the face of rapid technological advancements and changes in employment relationships...
February 15, 2019: American Journal of Industrial Medicine
Yuyu Ishimoto, Cyrus Cooper, Georgia Ntani, Hiroshi Yamada, Hiroshi Hashizume, Keiji Nagata, Shigeyuki Muraki, Sakae Tanaka, Noriko Yoshimura, Munehito Yoshida, Karen Walker-Bone
BACKGROUND: To explore the association of MRI-diagnosed severe lumbar spinal stenosis with occupation. METHODS: Occupational data were collected by questionnaire and all participants underwent spine MRI scans using the same protocol. Central lumbar spinal stenosis (LSS) was graded qualitatively. Those with severe LSS (>two-thirds narrowing) were compared with the controls with lesser degrees of stenosis or no stenosis. RESULTS: Data were available for 722 subjects, mean age 70...
February 14, 2019: American Journal of Industrial Medicine
Kerton R Victory, Carol R Braun, Marie A de Perio, Geoffrey M Calvert, Walter Alarcon
BACKGROUND: Over 90% of adults with elevated blood lead levels (BLLs) in the United States are exposed occupationally. Missouri historically has been among the states with the highest prevalence rates of elevated BLLs. We characterized cases of elevated BLLs among Missouri adults to target preventive interventions. METHODS: We reviewed 2013 data on Missouri residents ≥16 years from the Missouri Adult Blood Lead Epidemiology and Surveillance system and analyzed characteristics of those with elevated BLLs...
February 11, 2019: American Journal of Industrial Medicine
P Daniel Patterson, Matthew D Weaver, Mark A Markosyan, Charity G Moore, Frank X Guyette, Jack M Doman, Denisse J Sequeira, Howard A Werman, Doug Swanson, David Hostler, Joshua Lynch, Megan A Templin, Nigel L Rozario, Lindsey Russo, Linda Hines, Karen Swecker, Michael S Runyon, Daniel J Buysse
BACKGROUND: Greater than half of Emergency Medical Services (EMS) shift workers report fatigue at work and most work long duration shifts. We sought to compare the alertness level of EMS shift workers by shift duration. METHODS: We used a multi-site, 14-day prospective observational cohort study design of EMS clinician shift workers at four air-medical EMS organizations. The primary outcome was behavioral alertness as measured by psychomotor vigilance tests (PVT) at the start and end of shifts...
February 7, 2019: American Journal of Industrial Medicine
Justin Manjourides, Jack T Dennerlein
BACKGROUND: Safety prequalification assessing contractors' safety management systems and safety programs lack validation in predicting construction worker injuries. METHODS: Safety assessments of leading indicators from 2198 construction contractors, including Safety Management Systems (SMS), Safety Programs (e.g., falls, hearing protection), and Special Elements (drug testing, return to work) scales as well as the history of citations from the Occupational Safety and Health Administration (OSHA) were compared to contractors' lagging indicators of recordable injury case rates (RC) and rates of injuries involving days away, restricted, or transferred (DART)...
February 6, 2019: American Journal of Industrial Medicine
Hongbing Sun
BACKGROUND: Temporal trends and broad geographical distributions of asbestos use and the incidence of malignant mesothelioma (MM) in the US still need to be studied. METHODS: Data on asbestos consumption and production between 1900 and 2015 and MM mortality and incidence rates between 1975 and 2015 in the US were examined. Spatial distributions of MM mortality and incidence rates and their association with climate zone were analyzed. RESULTS: Decline of MM incidence and mortality rates in the US occurred about 20 years after the peak of asbestos consumption-production in 1973...
January 31, 2019: American Journal of Industrial Medicine
Scott M Riester, Karyn L Leniek, Ashley D Niece, Andre Montoya-Barthelemy, William Wilson, Jonathan Sellman, Paul J Anderson, Emily L Bannister, Ralph S Bovard, Karis A Kilbride, Kirsten M Koos, Hyun Kim, Zeke J McKinney, Fozia A Abrar
BACKGROUND: Minnesota has an ethnically diverse labor force, with the largest number of refugees per capita in the United States. In recent years, Minnesota has been and continues to be a major site for immigrant and refugee resettlement in the United States, with a large population of both immigrant and native born Hmong, Hispanic, and East Africans. This study seeks to evaluate the injury risk among the evolving minority workforce in the Minnesota Twin Cities region. METHODS: A retrospective cohort study identifying work-related injuries following pre-employment examinations was performed using electronic health records from a large multi-clinic occupational medicine practice...
January 30, 2019: American Journal of Industrial Medicine
Laura N Syron, Devin L Lucas, Viktor E Bovbjerg, Laurel D Kincl
BACKGROUND: Alaska's onshore seafood processing industry is economically vital and hazardous. METHODS: Accepted Alaska workers' compensation claims data from 2014 to 2015 were manually reviewed and coded with the Occupational Injury and Illness Classification System and associated work activity. Workforce data were utilized to calculate rates. RESULTS: 2,889 claims of nonfatal injuries/illnesses were accepted for compensation. The average annual claim rate was 63 per 1000 workers...
January 28, 2019: American Journal of Industrial Medicine
Sonia El-Zaemey, Renee N Carey
BACKGROUND: There is limited information on whether the prevalence of exposure to workplace carcinogens varies among shift workers and non-shift workers. METHODS: This analysis used data from the Australian Work Exposures Study-Cancer, a telephone survey which examined exposure to carcinogens in the workplace. Workers were classified as shift workers if they indicated that their usual roster ever included work between the hours of midnight and 5 am. Modified Poisson regression was used to estimate the adjusted prevalence ratios (aPRs) and 95% confidence internals (CIs)...
January 24, 2019: American Journal of Industrial Medicine
Pål Graff, Ing-Liss Bryngelsson, Mats Fredrikson, Ulf Flodin
BACKGROUND: There is still no consensus about the association between working in dampness-damaged buildings and new onset of asthma among adults. The purpose of this study was to assess asthma in the staff of two psychiatric clinics where some premises were suffering from dampness. METHODS: A 20-year retrospective cohort study was performed using questionnaires. RESULTS: Incidence rate ratios (IRR) for asthma were non-significantly elevated (IRR = 2...
January 24, 2019: American Journal of Industrial Medicine
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