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Annals of Occupational and Environmental Medicine

Yeogyeong Yoon, Jia Ryu, Hyunjoo Kim, Chung Won Kang, Kyunghee Jung-Choi
Background: South Korea is one of the countries with the longest working hours in the OECD countries. The aim of this study was to evaluate the effect of working hours on depressive symptoms and the role of job stress factors between the two variables among employees in South Korea. Methods: This study used data from the Korea Working Conditions Survey in 2014. Study subjects included 23,197 employees aged 19 years or older who work more than 35 h per week. Working hours were categorized into 35-39, 40, 41-52, 53-68, and more than 68 h per week...
2018: Annals of Occupational and Environmental Medicine
Yon Soo An, Hyung Doo Kim, Hyeoung Cheol Kim, Kyoung Sook Jeong, Yeon Soon Ahn
Background: This study aimed to enhance understanding of the epidemiologic characteristics of asbestos-related diseases, and to provide information that could inform policy-making aimed at prevention and compensation for occupational asbestos exposure, through analyzing asbestos-related occupational disease claims to Korea Workers' Compensation and Welfare Service from 2011 to 2015. Methods: We analyzed 113 workers who filed medical care claims or survivor benefits for asbestos exposure and occupational-related disease from 2011 to 2015...
2018: Annals of Occupational and Environmental Medicine
Yu Min Lee, Hye Won Chung, Kyungah Jeong, Yeon-Ah Sung, Hyejin Lee, Shinhee Ye, Eun-Hee Ha
Background: Anti-Mullerian hormone (AMH) in women is secreted by granulosa cells of antral follicles. AMH appears to be a very stable marker for ovarian function. It may be used to diagnosis cases of premature ovarian failure, polycystic ovary syndrome (PCOS), and ovarian tumors. It has been suggested that cadmium exposure can reduce female fecundity. The purpose of this study was to investigate whether environmental exposure to cadmium was associated with alterations in AMH with regards to age...
2018: Annals of Occupational and Environmental Medicine
Namhoon Lee, Kiook Baek, Soohyun Park, Inho Hwang, Insung Chung, Wonil Choi, Hyera Jung, Miyoung Lee, Seonhee Yang
Background: Using analysis of air samples from the workplace, we report on one case of pneumoconiosis in an individual who has been working in a polytetrafluoroethylene (PTFE) spraying process for 28 years. Case presentation: The patient was diagnosed with granulomatous lung disease caused by PTFE using computed tomography (CT), lung biopsy and electron microscopy. To assess the qualitative and quantitative exposure to PTFE in workplace, Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDX) and thermogravimetric analysis (TGA) were performed on air samples from the workplace...
2018: Annals of Occupational and Environmental Medicine
Ju-Il Seo, Gab-Sik Shin, Min Gi Kim, Young-Sun Min
Background: The aim of this study was to examine the relationship between the provision of safety and health information (PSHI) and occupational injuries. Methods: This study was based on data from the 4th Korean Working Conditions Survey (KWCS) (2014). The sample consisted of data from 24,527 wage workers and was divided into high-risk and low-risk groups, depending on the probability of occupational injury. The high-risk group included subjects who could cause harm to themselves or others due to errors during work...
2018: Annals of Occupational and Environmental Medicine
Yi-Ryoung Lee, Hyoung-Ryoul Kim, Seyoung Lee
Background: Korean teacher's working conditions are deteriorating. There is concern about the deterioration of teachers' health and voice disorder is one of the most common problems. Teacher's vocal health is important for them and their students. The aim of the present study was to investigate working conditions that may affect voice disorders. Methods: In all, 79 primary and secondary schools were randomly selected for a nationwide school system survey ( N  = 3345)...
2018: Annals of Occupational and Environmental Medicine
Wook Han, Soon-Chan Kwon, Yong-Jin Lee, Chan Park, Eun-Chul Jang
Background: The aim of this study was to investigate the association between work-related factors and temporomandibular disorders (TMD) among female full-time employees using representative data from a national population-based survey. Methods: Data from the Fourth Korea National Health and Nutrition Examination Survey IV (2007-2009) were used to analyze 1,612 women. Complex samples logistic regression was applied for adjusting for general characteristics and work-related factors to examine the association between work-related factors and TMD...
2018: Annals of Occupational and Environmental Medicine
Jaehyuk Jung, Inchul Jeong, Kyung-Jong Lee, Guyeon Won, Jae Bum Park
Background: Prospective studies on occupational stress and depression among Korean workers are scarce. This study aimed to investigate the causal relationship between changes in occupational stress and the presence of depression. Methods: This study analyzed data from a survey conducted with workers in a large Korean company (2015-2016). Occupational stress was measured using the Korean Occupational Stress Scale, and depression was screened using the WHO-5 Well-being Index...
2018: Annals of Occupational and Environmental Medicine
Jung-Youb Lee, Jung-Won Kim, Eun-Jung Kim, Mi-Young Lee, Chang-Wook Nam, In-Sung Chung
Background: The concentration of particulate matter in the air varies depending on the region because it is lightweight and generated from a variety of sources. To assess the relationship between particulate matter and eye disease, this study analyzes the concentration data obtained from spatial analysis of particulate matter and emergency visit data. Methods: The study included 769 residents of Daegu, Korea who had visited an emergency room for the problem of conjunctivitis or keratitis...
2018: Annals of Occupational and Environmental Medicine
Dong-Hoon Lee, Seong-Kyu Kang, Won-Jun Choi, Kyeong Min Kwak, Dukyun Kang, Sang Ha Lee, Jun-Hyung Lee
Background: Several studies suggest that serum ferritin concentrations reflect systemic inflammation, and high ferritin levels can increase the risk of hypertension in adult men. Shift work is also known to increase the risk of hypertension; however, there has been no study about the relationship between serum ferritin levels and the prevalence of hypertension according to the working type. Methods: This cross-sectional study included 4,442 male participants (3,651 daytime workers and 791 shift workers) who participated in the fifth Korean National Health and Nutrition Examination Survey...
2018: Annals of Occupational and Environmental Medicine
Jae Won Yang, Chunhui Suh, Chae Kwan Lee, Byung Chul Son
Background: It is challenging to balance work and life, and little attention has been paid to the work-life balance and psychosocial well-being of South Koreans. We assessed the association between work-life balance and psychosocial well-being among paid Korean workers. Methods: This study was based on data from the fourth Korean Working Conditions Survey. We evaluated only paid workers, which constituted 30,649 of the total of 50,007 subjects surveyed. Poor work-life balance was defined based on the goodness of fit between working hours and social commitments...
2018: Annals of Occupational and Environmental Medicine
Yeong-Kwang Kim, Jin-Ha Yoon, Wanhyung Lee, Jihyun Kim, Sung-Shil Lim, Jong-Uk Won
Background: Health officers are an integral part of the occupational health service, and there have been studies to identify and improve the role of health officers in the workplace in order to improve the level of health care in the workplace. This study aimed to determine the contribution of health officers to the role of a health officer as prescribed by law and the percentage of health management work performed during work according to their qualifications. Methods: Questionnaires were distributed to a total of 4584 workplaces where health officers were hired, and a total of 806 copies (17...
2018: Annals of Occupational and Environmental Medicine
Prem Bhattarai, Bishnu H Paudel, Dilip Thakur, Balkrishna Bhattarai, Bijay Subedi, Rita Khadka
Background: Despite the successful adaptation to high altitude, some differences do occur due to long term exposure to the hypoxic environment. The effect of long term high altitude exposure on cardiac autonomic adjustment during basal and post-exercise recovery is less known. Thus we aimed to study the differences in basal cardiac autonomic adjustment and its response to exercise in highlanders and to compare it with lowlanders. Methods: The study was conducted on 29 healthy highlander males who were born and brought up at altitude of 3000 m and above from the sea level, their cardiac autonomic adjustment was compared with age, sex, physical activity and ethnicity-matched 29 healthy lowlanders using Heart Rate Variability (HRV) during rest and recovery from sub-maximal exercise (3 m step test)...
2018: Annals of Occupational and Environmental Medicine
Jin-Ha Yoon, Woo Seok Kwak, Yeon-Soon Ahn
We reviewed articles to clarify the current evidence status for 1) types of cancer which related to benzene exposure, and 2) certain benzene exposure level which might cause the hematopoietic cancers. Hematopoietic function of the bone marrow is involved in the production of all blood cells types. The benzene metabolites including benzoquinone and mucoaldehyde affect hematopoietic stem cells as well as differentiation steps of progenitor cells for each blood cell. Hence, we concluded that benzene was associated with all lymphohematic carcinogenesis...
2018: Annals of Occupational and Environmental Medicine
Ji-Hoo Yook, Dong-Wook Lee, Min-Seok Kim, Yun-Chul Hong
Background: Bus drivers are known to be highly at risk of cardiovascular diseases. In this study, we assessed the cardiovascular disease prevalence of bus company employees in Seoul, South Korea, and compared the results to those of general workers. Methods: We analyzed the 2014 Korean National Health Insurance (NHI) data and defined hypertension, diabetes, dyslipidemia, ischemic heart disease, and cerebrovascular disease based on the KCD-6 medical diagnoses. We used bus company employees as surrogate participants of bus drivers due to the characteristics of Korean NHI data...
2018: Annals of Occupational and Environmental Medicine
Min-Seok Kim, Taeshik Kim, Dongwook Lee, Ji-Hoo Yook, Yun-Chul Hong, Seung-Yup Lee, Jin-Ha Yoon, Mo-Yeol Kang
Background: Numerous studies have shown that healthcare professionals are exposed to psychological distress. However, since most of these studies assessed psychological distress using self-reporting questionnaires, the magnitude of the problem is largely unknown. We evaluated the risks of mood disorders, anxiety disorders, sleep disorders, and any psychiatric disorders in workers in healthcare industry using Korea National Health Insurance (NHI) claims data from 2014, which are based on actual diagnoses instead of self-evaluation...
2018: Annals of Occupational and Environmental Medicine
Minsu Ock, Eun Young Choi, Inbo Oh, Seok Hyeon Yun, Yoo-Keun Kim, Hyunsu Kim, Min-Woo Jo, Jiho Lee
[This corrects the article DOI: 10.1186/s40557-018-0214-3.].
2018: Annals of Occupational and Environmental Medicine
Hadi Asady, Mehdi Yaseri, Mostafa Hosseini, Morvarid Zarif-Yeganeh, Mahmoud Yousefifard, Mahin Haghshenas, Parisa Hajizadeh-Moghadam
Background: Occupational accidents are of most important consequences of globalization in developing countries. Therefore, investigating the causes of occupational accidents for improving the job situation and making operational policy is necessary. So the aim of this study was to investigate factors affecting the fatal occupational accidents and also calculate the years of life lost for dead workers. Methods: This cross-sectional study was conducted on data related to the 6052 injured workers that was registered in the 2013 registry system of the Ministry of Health and Medical Education of Iran...
2018: Annals of Occupational and Environmental Medicine
Han-Seur Jeong, Byung-Seong Suh, Soo-Geun Kim, Won-Sool Kim, Won-Cheol Lee, Kyung-Hun Son, Min-Woo Nam
Background: Previous studies have classified cameramen's job as physiologically heavy work and identified the risk factors of work-related musculoskeletal disorders (WRMDs) in cameramen. However, those studies limited their research subjects to cameramen. In this study, we compared the frequency and severity of WRMDs between cameramen and office workers. Methods: A total of 293 subjects working in four broadcasting companies in Korea were recruited. A questionnaire survey was conducted for a month, starting in October 2016...
2018: Annals of Occupational and Environmental Medicine
Sangyun Seo, Jungwon Kim
Background: Organic solvent-induced chronic toxic encephalopathy (CTE) is known as a non-progressive disorder that does not progress after diagnosis. The authors present a case those symptoms worsened after continued exposure to organic solvent after returning to work. Because such a case has not been reported in South Korea to the best of our knowledge, we intend to report this case along with literature review. Case presentation: A 59-year-old man, who performed painting job at a large shipyard for 20 years, was receiving hospital treatment mainly for depression...
2018: Annals of Occupational and Environmental Medicine
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