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Volume 28; 2016
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Erratums
Erratum to: Trends in research on indoor radon exposure and lung cancer in South Korea
Dae Ryong Kang, Dongmug Kang, Kyoung-Bok Min, Changsoo Kim, Sung-Soo Oh, Sang-Baek Koh
Ann Occup Environ Med 2016;28:71.   Published online December 28, 2016
DOI: https://doi.org/10.1186/s40557-016-0156-6
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Erratum to: An updated review of case–control studies of lung cancer and indoor radon-Is indoor radon the risk factor for lung cancer?
Seungsoo Sheen, Keu Sung Lee, Wou Young Chung, Saeil Nam, Dae Ryong Kang
Ann Occup Environ Med 2016;28:70.   Published online December 28, 2016
DOI: https://doi.org/10.1186/s40557-016-0155-7
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Citations

Citations to this article as recorded by  
  • Radiation-related health hazards to uranium miners
    Yuliya Semenova, Lyudmila Pivina, Yersin Zhunussov, Marat Zhanaspayev, Salvatore Chirumbolo, Zhanna Muzdubayeva, Geir Bjørklund
    Environmental Science and Pollution Research.2020; 27(28): 34808.     CrossRef
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Research Article
Effects of shift work on abdominal obesity among 20–39-year-old female nurses: a 5-year retrospective longitudinal study
Gyeong-Jin Lee, Kunhyung Kim, Se-yeong Kim, Jeong-Ho Kim, Chunhui Suh, Byung-Chul Son, Chae-Kwan Lee, Junghye Choi
Ann Occup Environ Med 2016;28:69.   Published online December 5, 2016
DOI: https://doi.org/10.1186/s40557-016-0148-6
AbstractAbstract PDFPubReaderePub
Background

This study aimed to investigate the effects of shift work on abdominal obesity among young and middle-aged female nurses during a 5-year retrospective study.

Methods

This retrospective study included female nurses (20–39 years old) who worked at a university hospital in Korea and had available health screening results from 2010–2015. Among 2,611 employees, 934 healthy 20–39-year-old female nurses were identified, and data regarding their demographic information (age and date of employment), waist circumferences (WC), and lifestyle factors (alcohol and exercise) were obtained. Abdominal obesity was defined as a WC of ≥80 cm, based on the World Health Organization’s Asia-West Pacific standard in 2000. The mean WC change from baseline was analyzed using the paired t test, and the association between shift work and abdominal obesity was analyzed using the generalized estimating equation.

Results

Compared to all day workers (both age groups), the 20–29-year-old nurses did not exhibit significant changes in WC at each follow-up. However, among the 30–39-year-old nurses, shift workers exhibited a significant change in WC (vs. baseline) during years 4 and 5, compared to day workers. After adjusting for effective confounders and stratifying the participants according to age, the 20–29-year-old nurses exhibited an odds ratio of 3.21 (95 % confidence interval: 1.29–7.98) for shift work-associated obesity, although the odds ratio for the 30–39-year-old nurses was not statistically significant.

Conclusion

In the study population, shift work was associated with a significant change in mean WC among 30–39-year-old nurses, and the shift work-associated risk of abdominal obesity was significant among 20–29-year-old nurses. These results indicate that shift work may influence abdominal obesity differently in 20–29-year-old and 30–39-year-old female nurses.


Citations

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    Felipe Reis Stavaux Baudson, Luiz Antônio Alves de Menezes-Júnior, Sílvia Nascimento de Freita, Fausto Aloisio Pedrosa Pimenta, George Luiz Lins Machado-Coelho, Fernando Luiz Pereira de Oliveira, Raimundo Marques do Nascimento Neto, Silvana Mara Luz Turbi
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    Sorina Hohor, Cristina Mandanach, Andreea Maftei, Corina Aurelia Zugravu, Marina Ruxandra Oțelea
    Antioxidants.2023; 12(4): 959.     CrossRef
  • Prevalence of overweight and obesity among health professionals with shift work schedules: A scoping review
    Maria Gabriela Tavares Amaro, Ricardo Abdala Conde de Almeida, Bruno Marques Donalonso, Alessandra Mazzo, Carlos Antonio Negrato
    Chronobiology International.2023; 40(3): 343.     CrossRef
  • Investigation of Mental and Physical Health of Nurses Associated with Errors in Clinical Practice
    Despoina Pappa, Ioannis Koutelekos, Eleni Evangelou, Evangelos Dousis, Georgia Gerogianni, Evdokia Misouridou, Afroditi Zartaloudi, Nikoletta Margari, Georgia Toulia, Polyxeni Mangoulia, Eftychia Ferentinou, Anna Giga, Chrysoula Dafogianni
    Healthcare.2022; 10(9): 1803.     CrossRef
  • A Simulated Shift Work Schedule Does Not Increase DNA Double-Strand Break Repair by NHEJ in the Drosophila Rr3 System
    Lydia Bergerson, Caleb Fitzmaurice, Tyler Knudtson, Halle McCormick, Alder M. Yu
    Genes.2022; 13(1): 150.     CrossRef
  • Shift Work and Obesity Risk—Are There Sex Differences?
    Kevin L. Smith, Alexandria B. Danyluk, Sanah S. Munir, Naima Covassin
    Current Diabetes Reports.2022; 22(8): 341.     CrossRef
  • Effect of night shift on development of metabolic syndrome among health care workers
    Jyotirmayee Bahinipati, Rajlaxmi Sarangi, Mona Pathak, Srikrushna Mohapatra
    Journal of Family Medicine and Primary Care.2022; 11(5): 1710.     CrossRef
  • Association of Shift Work with Normal-Weight Obesity in Community-Dwelling Adults
    Chul Woo Ahn, Sungjae Shin, Seunghyun Lee, Hye-Sun Park, Namki Hong, Yumie Rhee
    Endocrinology and Metabolism.2022; 37(5): 781.     CrossRef
  • Night Work and Breast Cancer Risk in Nurses: Multifactorial Risk Analysis
    Juan Gómez-Salgado, Javier Fagundo-Rivera, Mónica Ortega-Moreno, Regina Allande-Cussó, Diego Ayuso-Murillo, Carlos Ruiz-Frutos
    Cancers.2021; 13(6): 1470.     CrossRef
  • Prevalence of non-communicable disease risk factors among nurses and para-health professionals working at primary healthcare level of Bangladesh: a cross-sectional study
    Mithila Faruque, Lingkan Barua, Palash Chandra Banik, Sharmin Sultana, Animesh Biswas, Abdul Alim, Pradip Kumar Sen Gupta, Liaquat Ali
    BMJ Open.2021; 11(3): e043298.     CrossRef
  • Behavioural characteristics and abdominal obesity among Brazilian shift working women
    Heloísa Theodoro, Diego Garcia Bassani, Janaína Cristina da Silva, Karina Giane Mendes, Gabriela Hermann Cibeira, Julia Cigana Schenkel, Maria Teresa Anselmo Olinto
    Public Health Nutrition.2021; 24(2): 253.     CrossRef
  • Implications of Lifestyle and Occupational Factors on the Risk of Breast Cancer in Shiftwork Nurses
    Javier Fagundo-Rivera, Regina Allande-Cussó, Mónica Ortega-Moreno, Juan Jesús García-Iglesias, Adolfo Romero, Carlos Ruiz-Frutos, Juan Gómez-Salgado
    Healthcare.2021; 9(6): 649.     CrossRef
  • Morbidities and medications used by practicing nurses during the climacteric
    Maria Cristina Tani Beneventi, Sônia Maria Rolim Rosa Lima
    Revista da Associação Médica Brasileira.2021; 67(11): 1706.     CrossRef
  • Time of day difference in postprandial glucose and insulin responses: Systematic review and meta-analysis of acute postprandial studies
    Gloria K. W. Leung, Catherine E. Huggins, Robert S. Ware, Maxine P. Bonham
    Chronobiology International.2020; 37(3): 311.     CrossRef
  • Job-Related Characteristics and Obesity in Australian Employees: Evidence From a Longitudinal Nationally Representative Sample
    Syed Afroz Keramat, Khorshed Alam, Jeff Gow, Stuart J. H. Biddle
    American Journal of Health Promotion.2020; 34(7): 729.     CrossRef
  • BMI differences between different genders working fixed day shifts and rotating shifts: a literature review and meta-analysis
    Wen-Pei Chang, Hsiu-Ju Jen
    Chronobiology International.2020; 37(12): 1754.     CrossRef
  • Association between shift work and obesity among nurses: A systematic review and meta-analysis
    Qi Zhang, Sek Ying Chair, Suzanne Hoi Shan Lo, Janita Pak-Chun Chau, Mark Schwade, Xiaosu Zhao
    International Journal of Nursing Studies.2020; 112: 103757.     CrossRef
  • Relationship between night shift work, eating habits and BMI among nurses in Lebanon
    Zeinab Samhat, Randa Attieh, Yonna Sacre
    BMC Nursing.2020;[Epub]     CrossRef
  • Napping on night‐shifts among nursing staff: A mixed‐methods systematic review
    Huanhuan Li, Yanping Shao, Zhuangjie Xing, Yuan Li, Shouqi Wang, Meiling Zhang, Jie Ying, Ying Shi, Jiao Sun
    Journal of Advanced Nursing.2019; 75(2): 291.     CrossRef
  • The Effect of Special Medical Examination for Night Shift Workers and Follow-Up Management Against Hypertension
    Won Seon Choi, Ji-Won Lee, Jae Yong Lee, Kyeong Yeon Kim, Jun-Pyo Myong, Won-Chul Lee
    International Journal of Environmental Research and Public Health.2019; 16(5): 719.     CrossRef
  • NOCTURNIN Gene Diurnal Variation in Healthy Volunteers and Expression Levels in Shift Workers
    Massimo Bracci, Alfredo Copertaro, Veronica Ciarapica, Mariella Barbaresi, Stefano Esposito, Antonella Albanesi, Matteo Valentino, Caterina Ledda, Venerando Rapisarda, Lory Santarelli
    BioMed Research International.2019; 2019: 1.     CrossRef
  • A National Study Links Nurses’ Physical and Mental Health to Medical Errors and Perceived Worksite Wellness
    Bernadette Mazurek Melnyk, Liana Orsolini, Alai Tan, Cynthia Arslanian-Engoren, Gail D’Eramo Melkus, Jacqueline Dunbar-Jacob, Virginia Hill Rice, Angelica Millan, Sandra B. Dunbar, Lynne T. Braun, JoEllen Wilbur, Deborah A. Chyun, Kate Gawlik, Lisa M. Lew
    Journal of Occupational & Environmental Medicine.2018; 60(2): 126.     CrossRef
  • Meta‐analysis on shift work and risks of specific obesity types
    M. Sun, W. Feng, F. Wang, P. Li, Z. Li, M. Li, G. Tse, J. Vlaanderen, R. Vermeulen, L. A. Tse
    Obesity Reviews.2018; 19(1): 28.     CrossRef
  • Prevalence and factors associated with abdominal obesity among primary health care professional nurses in Eastern Cape, South Africa
    Sizeka Monakali, Daniel Ter Goon, Eunice Seekoe, Eyitayo Omolara Owolabi
    South African Family Practice.2018; 60(5): 146.     CrossRef
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Short Communication
Environmental health centers for asbestos and their health impact surveys and activities
Dong-Mug Kang, Jong-Eun Kim, Yong-Jin Lee, Hyun-Hee Lee, Chang-yeol Lee, Seong-Jae Moon, Min-Sung Kang
Ann Occup Environ Med 2016;28:68.   Published online December 1, 2016
DOI: https://doi.org/10.1186/s40557-016-0154-8
AbstractAbstract PDFPubReaderePub

In 2009, Korea banned the import, transport, and use of asbestos, and the Asbestos Injury Relief Act (AIRA) was promulgated in 2011. Two environmental health centers for asbestos (EHCA), including Pusan National University Yangsan Hospital (PNUYH) and SoonChunHyang University Cheonan Hospital (SCHUCH), were adapted to find environmental asbestos-related diseases (ARDs) and to support the purposes of AIRA. EHCA conducted a health impact survey (HIS) on persons who resided or reside near asbestos factories or mines. A total of 13,433 persons have taken screening examinations in PNUYH EHCA, and 623 persons (4.6%) have had secondary examinations. Of the 21,014 persons who had screening examinations in SCHUCH EHCA, 2490 persons (11.8%) had secondary examinations. Some of those who tested positive for ARDs through HISs filed applications for the asbestos victims’ medical pocketbook (AVMP). Approximately 116 and 612 persons received AVMPs as a result of PNUYH and SCHUCH examinees, respectively. EHCAs have conducted HISs, public relations, and education for asbestos victims, ordinary citizens, and physicians. As HISs are based on voluntary participation, they does not monitor high-risk groups. Active surveillance focusing on high-risk groups has been blocked by the personal information protection act. Although important work has been performed in finding environmental asbestos victims and increasing public awareness on asbestos, it is necessary to improve the current system and registration.


Citations

Citations to this article as recorded by  
  • Air pollution and survival in patients with malignant mesothelioma and asbestos-related lung cancer: a follow-up study of 1591 patients in South Korea
    Da-An Huh, Yun-Hee Choi, Lita Kim, Kangyeon Park, Jiyoun Lee, Se Hyun Hwang, Kyong Whan Moon, Min-Sung Kang, Yong-Jin Lee
    Environmental Health.2024;[Epub]     CrossRef
  • Occupational and Environmental Asbestos Exposure and Survival of Patients with Asbestos-Related Cancer: A Follow-Up Study on Patients with Malignant Mesothelioma and Asbestos-Related Lung Cancer in Korea
    Min-Sung Kang, Woo-Ri Chae, Yong-Jin Lee, Kyong Whan Moon
    Toxics.2023; 12(1): 20.     CrossRef
  • Disease Latency according to Asbestos Exposure Characteristics among Malignant Mesothelioma and Asbestos-Related Lung Cancer Cases in South Korea
    Da-An Huh, Woo-Ri Chae, Yun-Hee Choi, Min-Sung Kang, Yong-Jin Lee, Kyong-Whan Moon
    International Journal of Environmental Research and Public Health.2022; 19(23): 15934.     CrossRef
  • Occupational and environmental asbestos exposure and the risk of lung cancer in Korea: A case-control study in South Chungcheong Province of Korea
    Da-An Huh, Min-Sung Kang, Jiyun Lee, Ji Yoon Choi, Kyong Whan Moon, Yong-Jin Lee, Flavio Manoel Rodrigues Da Silva Júnior
    PLOS ONE.2021; 16(4): e0249790.     CrossRef
  • Development of Nationwide Excess Lifetime Cancer Risk Evaluation Methods with Comprehensive Past Asbestos Exposure Reconstruction
    Dongmug Kang, Seung Ho Lee, Yoon Ji Kim, Tae Kyoung Kim, Ju Young Kim, Youngki Kim
    International Journal of Environmental Research and Public Health.2021; 18(6): 2819.     CrossRef
  • Epidemiological Findings on Health Effects of Environmental Exposure to Airborne Asbestos
    Hideki Hasunuma, Masayuki Shima
    Material Cycles and Waste Management Research.2020; 31(5): 366.     CrossRef
  • Relationships of Lower Lung Fibrosis, Pleural Disease, and Lung Mass with Occupational, Household, Neighborhood, and Slate Roof-Dense Area Residential Asbestos Exposure
    Dongmug Kang, Yu-Young Kim, Minseung Shin, Min-Su Lee, Hee-Joo Bae, Se-Yeong Kim, Young-Ki Kim
    International Journal of Environmental Research and Public Health.2018; 15(8): 1638.     CrossRef
  • Monitoring and Simulating Environmental Asbestos Dispersion from a Textile Factory
    Dongmug Kang, Yongsik Hwang, Yeyong Choi, Se-Yeong Kim, Young-Ki Kim
    International Journal of Environmental Research and Public Health.2018; 15(7): 1398.     CrossRef
  • Occupational Burden of Asbestos-Related Diseases in Korea, 1998–2013: Asbestosis, Mesothelioma, Lung Cancer, Laryngeal Cancer, and Ovarian Cancer
    Dong-Mug Kang, Jong-Eun Kim, Young-Ki Kim, Hyun-Hee Lee, Se-Yeong Kim
    Journal of Korean Medical Science.2018;[Epub]     CrossRef
  • The Asbestos Ban in Korea from a Grassroots Perspective: Why Did It Occur?
    Yu-Ryong Yoon, Kyeong Kwak, Yeyong Choi, Kanwoo Youn, Jinwook Bahk, Dong-Mug Kang, Domyung Paek
    International Journal of Environmental Research and Public Health.2018; 15(2): 198.     CrossRef
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Research Articles
Urinary arsenic species concentration in residents living near abandoned metal mines in South Korea
Jin-Yong Chung, Byoung-Gwon Kim, Byung-Kook Lee, Jai-Dong Moon, Joon Sakong, Man Joong Jeon, Jung-Duck Park, Byung-Sun Choi, Nam-Soo Kim, Seung-Do Yu, Jung-Wook Seo, Byeong-Jin Ye, Hyoun-Ju Lim, Young-Seoub Hong
Ann Occup Environ Med 2016;28:67.   Published online November 22, 2016
DOI: https://doi.org/10.1186/s40557-016-0150-z
AbstractAbstract PDFPubReaderePub
Background

Arsenic is a carcinogenic heavy metal that has a species-dependent health effects and abandoned metal mines are a source of significant arsenic exposure. Therefore, the aims of this study were to analyze urinary arsenic species and their concentration in residents living near abandoned metal mines and to monitor the environmental health effects of abandoned metal mines in Korea.

Methods

This study was performed in 2014 to assess urinary arsenic excretion patterns of residents living near abandoned metal mines in South Korea. Demographic data such as gender, age, mine working history, period of residency, dietary patterns, smoking and alcohol use, and type of potable water consumed were obtaining using a questionnaire. Informed consent was also obtained from all study subjects (n = 119). Urinary arsenic species were quantified using high performance liquid chromatography (HPLC) and inductively coupled plasma mass spectrometry (ICP/MS).

Results

The geometric mean of urinary arsenic (sum of dimethylarsinic acid, monomethylarsonic acid, As3+, and As5+) concentration was determined to be 131.98 μg/L (geometric mean; 95% CI, 116.72–149.23) while urinary inorganic arsenic (As3+ and As5+) concentration was 0.81 μg/L (95% CI, 0.53–1.23). 66.3% (n = 79) and 21.8% (n = 26) of these samples exceeded ATSDR reference values for urinary arsenic (>100 μg/L) and inorganic arsenic (>10 μg/L), respectively. Mean urinary arsenic concentrations (geometric mean, GM) were higher in women then in men, and increased with age. Of the five regions evaluated, while four regions had inorganic arsenic concentrations less than 0.40 μg/L, one region showed a significantly higher concentration (GM 15.48 μg/L; 95% CI, 7.51–31.91) which investigates further studies to identify etiological factors.

Conclusion

We propose that the observed elevation in urinary arsenic concentration in residents living near abandoned metal mines may be due to environmental contamination from the abandoned metal mine.

Trial registration

Not Applicable (We do not have health care intervention on human participants).


Citations

Citations to this article as recorded by  
  • Assessing Acute and Chronic Risks of Human Exposure to Arsenic: A Cross-Sectional Study in Ethiopia Employing Body Biomarkers
    Solomon Demissie, Seblework Mekonen, Tadesse Awoke, Bezatu Mengistie
    Environmental Health Insights.2024;[Epub]     CrossRef
  • Changes in arsenic accumulation and metabolic capacity after environmental management measures in mining area
    Chen Zhao, Meng Du, Jun Yang, Guanghui Guo, Lingqing Wang, Yunxian Yan, Xuewen Li, Mei Lei, Tongbin Chen
    Science of The Total Environment.2023; 855: 158652.     CrossRef
  • Concentrations of blood and urinary arsenic species and their characteristics in general Korean population
    Jeong Weon Choi, Yoon Chae Song, Nam-Yong Cheong, Kiyoung Lee, Sunmi Kim, Kyoung-Mu Lee, Kyunghee Ji, Mi-Yeon Shin, Sungkyoon Kim
    Environmental Research.2022; 214: 113846.     CrossRef
  • MTHFR, As3MT and GSTO1 Polymorphisms Influencing Arsenic Metabolism in Residents Near Abandoned Metal Mines in South Korea
    Ulziikhishig Surenbaatar, Byoung-Gwon Kim, Hyun-Jin Son, Seong-Sik Cho, Gwon-Min Kim, Hyoun-Ju Lim, Jung-Yeon Kwon, Ki-Hwan Kim, Young-Seoub Hong
    Journal of Environmental Health Sciences.2021; 47(6): 530.     CrossRef
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Differences in the clinical manifestations and short-term prognosis of acute cerebral infarction after exposure to Agent Orange
SangWoo Han, Inha Hwang, Seung Min Kim, Young Soon Yang, SangWon Ha, Jeong Ho Han, Tae Hwan Park
Ann Occup Environ Med 2016;28:66.   Published online November 18, 2016
DOI: https://doi.org/10.1186/s40557-016-0137-9
AbstractAbstract PDFPubReaderePub
Background

Agent Orange (AO) is the code name for one of the herbicides and defoliants used in the Vietnam War. Studies conducted thus far show a significant correlation between AO and the occurrence of cardiovascular diseases. But there is little data on the association between AO and stroke, and limited studies have targeted patient groups exposed to AO.

Method

Bohun medical center Institutional Review Board (IRB) approved the study. (ID: 341) We studied patients with acute ischemic stroke within 7 days of onset in VHS medical center and 4 other general hospitals. Among them, 91 consecutive patients with previous exposure to AO were evaluated. For controlled group, 288 patients with no history of AO exposure were chosen.

Result

There were 49 (44.0 %) DM patient with a higher frequency in the exposure group (93 (32.3 %) in control P = 0.045). There were 6 (6.6 %) hyperlipidemia in exposure group and 69 (24.0 %) in control. (P < 0.002). Small vessel occlusion was the most common subtype (36, 39.6 %) in exposure group but in control group, the large artery atherosclesosis was (120, 41.7 %) (P = 0.014).

The NIHSS of the exposure group on admission showed lower scores (median values, 2 and 4, respectively; P = 0.003). The median mRS was 1 for the exposure group and 2 for the control group, at discharge and after 3 months. After 3 months of discharge, 55 (60.4 %) in the exposure group and 171 (59.4 %) in the control group showed below mRS 1 (P = 0.001).

Conclusion

This study targeted patients who are Vietnam veteran. There is some difference in vascular risk factors and clinical manifestations suggest AO exposure has contributed to a certain extent to the stroke.


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Case Report
Two cases of methyl alcohol intoxication by sub-chronic inhalation and dermal exposure during aluminum CNC cutting in a small-sized subcontracted factory
Jia Ryu, Key Hwan Lim, Dong-Ryeol Ryu, Hyang Woon Lee, Ji Young Yun, Seoung-Wook Kim, Ji-Hoon Kim, Kyunghee Jung-choi, Hyunjoo Kim
Ann Occup Environ Med 2016;28:65.   Published online November 15, 2016
DOI: https://doi.org/10.1186/s40557-016-0153-9
AbstractAbstract PDFPubReaderePub
Background

Methyl alcohol poisoning has been mainly reported in community. Two cases of methyl alcohol poisoning occurred in a small-sized subcontracted factory which manufactured smartphone parts in Korea.

Case presentation

One young female patient presented with dyspnea and visual disturbance. Another young male patient presented with visual disturbance and myalgia. They treated with sodium bicarbonate infusion and hemodialysis for metabolic acidosis. In addition, he received ethyl alcohol per oral treatment. Her and his urinary methyl alcohol concentration was detected as 7.632 mg/L, 46.8 mg/L, respectively, although they were treated hemodialysis. Results of the working environment measurement showed that the concentration of methyl alcohol (1030.1–2220.5 ppm) in the air exceeded the time weighted average (200 ppm). They were diagnosed with optic neuropathy due to methyl alcohol poisoning and still have visual impairment.

Conclusions

Workers who hired as dispatched employees in a small-sized subcontracted factory were exposed to high concentrations of methyl alcohol. The workplace had poor ventilation system. In addition, workers did not wear proper personal protect equipment. Working environment measurement and annual chekups for workers were not performed. They were in a blind spot to occupational safety and health. More attention is needed to protect vulnerable workers’ health.


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  • A new direct extraction by gas-chromatography with flame ionization detector coupled to head space method for the determination of alcohol content of high matrix wine products
    Onur Kenan ULUTAŞ, Aysel BERKKAN
    Revue Roumaine de Chimie.2023; 67(10-12): 569.     CrossRef
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    BEDANTA SARMA, SENTHIL KUMARAN M
    Asian Journal of Pharmaceutical and Clinical Research.2021; : 14.     CrossRef
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    David Sýkora, Jindřich Jindřich, Vladimír Král, Milan Jakubek, Ameneh Tatar, Zdeněk Kejík, Pavel Martásek, Sergey Zakharov
    Journal of Analytical Toxicology.2020; 44(8): 880.     CrossRef
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    Christianne V. Mojica, Esteban A. Pasol, Mercedes L. Dizon, Wenceslao A. Kiat, Timothy Reynold U. Lim, Jacqueline C. Dominguez, Vincent V. Valencia, Bernardo Joaquin P. Tuaño
    eNeurologicalSci.2020; 20: 100258.     CrossRef
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    Huisu Eom, Jihye Lee, Eun-A Kim
    Safety and Health at Work.2019; 10(3): 265.     CrossRef
  • Methanol as an Unlisted Ingredient in Supposedly Alcohol-Based Hand Rub Can Pose Serious Health Risk
    Alan P. L. Chan, Thomas Y. K. Chan
    International Journal of Environmental Research and Public Health.2018; 15(7): 1440.     CrossRef
  • Toxic Effects of Methanol among Illegally Dispatched Workers at Aluminum CNC Cutting Process in Small-Scale, Third-Tier Subcontractor Factories of Smartphone Manufacturers in the Republic of Korea
    Chung Won Kang, Hyunjoo Kim, Kyongsok Shin, Jia Ryu, Kyunghee Jung-Choi, Key Hwan Lim, Jin-Ha Kim
    International Journal of Environmental Research and Public Health.2018; 15(7): 1332.     CrossRef
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    Hyun Jin Kim, Moon Kyung Sunwoo, Jang Han Lee, Yong Sun Choi, Dae Yoon Kim
    Investigative Magnetic Resonance Imaging.2017; 21(1): 61.     CrossRef
  • Neurological Complications Resulting from Non-Oral Occupational Methanol Poisoning
    Ji-Hyun Choi, Seung Keun Lee, Young-Eun Gil, Jia Ryu, Kyunghee Jung-Choi, Hyunjoo Kim, Jun Young Choi, Sun Ah Park, Hyang Woon Lee, Ji Young Yun
    Journal of Korean Medical Science.2017; 32(2): 371.     CrossRef
  • Metanol Zehirlenmesi: Olgu Sunumu
    Hümeyra Yıldırım Can, Halil Kırbıyık
    The Bulletin of Legal Medicine.2017; 22(3): 228.     CrossRef
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Research Article
The effect of long working hours on 10-year risk of coronary heart disease and stroke in the Korean population: the Korea National Health and Nutrition Examination Survey (KNHANES), 2007 to 2013
Dong-Wook Lee, Yun-Chul Hong, Kyoung-Bok Min, Tae-Shik Kim, Min-Seok Kim, Mo-Yeol Kang
Ann Occup Environ Med 2016;28:64.   Published online November 15, 2016
DOI: https://doi.org/10.1186/s40557-016-0149-5
AbstractAbstract PDFPubReaderePub
Background

Recently, the emergence of long working hours and the associated conditions such as coronary heart disease (CHD) and stroke have gained attention. The aim of this study was to investigate the association between long working hours and the 10-year-risk of CHD and stroke, estimated by Jee’s health risk-appraisal model for ischemic heart disease.

Methods

We analyzed data from Koreans who randomly enrolled in Korean National Health and Nutrition Examination Survey 2008–2012 and finally included 13,799 participants. The participants were classified as per their working hours: 0–30 h/week, 31–39 h/week, 40 h/week, 41–50 h/week, 51–60 h/week, 61–70 h/week, 71–80 h/week, and >80 h/week. The risks for CHD and stroke were determined using Jee’s health risk-appraisal model. Multiple logistic regression was used to analyze the association between working hours and 10-year risk for CHD.

Results

The 10-year risks for CHD and stroke were significantly and positively associated with working hours in both men and women. Furthermore, higher risks for CHD and stroke were associated with longer working hours in women.

Conclusion

Long working hours are significantly associated with the risks of CHD and stroke, estimated by Jee’s health risk-appraisal model. This study suggests the need for proper management of working hours to reduce CHD risk and stroke risk in the Korean population.

Electronic supplementary material

The online version of this article (doi:10.1186/s40557-016-0149-5) contains supplementary material, which is available to authorized users.


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Review
The impact of fire suppression tasks on firefighter hydration: a critical review with consideration of the utility of reported hydration measures
Adam Walker, Rodney Pope, Robin Marc Orr
Ann Occup Environ Med 2016;28:63.   Published online November 15, 2016
DOI: https://doi.org/10.1186/s40557-016-0152-x
AbstractAbstract PDFPubReaderePub
Background

Firefighting is a highly stressful occupation with unique physical challenges, apparel and environments that increase the potential for dehydration. Dehydration leaves the firefighter at risk of harm to their health, safety and performance. The purpose of this review was to critically analyse the current literature investigating the impact of fighting ‘live’ fires on firefighter hydration.

Methods

A systematic search was performed of four electronic databases for relevant published studies investigating the impact of live fire suppression on firefighter hydration. Study eligibility was assessed using strict inclusion and exclusion criteria. The included studies were critically appraised using the Downs and Black protocol and graded according to the Kennelly grading system.

Results

Ten studies met the eligibility criteria for this review. The average score for methodological quality was 55 %, ranging from 50 % (‘fair’ quality) to 61 % (‘good’ quality) with a ‘substantial agreement’ between raters (k = .772). Wildfire suppression was considered in five studies and structural fire suppression in five studies. Results varied across the studies, reflecting variations in outcome measures, hydration protocols and interventions. Three studies reported significant indicators of dehydration resulting from structural fire suppression, while two studies found mixed results, with some measures indicating dehydration and other measures an unchanged hydration status. Three studies found non-significant changes in hydration resulting from wildfire firefighting and two studies found significant improvements in markers of hydration. Ad libitum fluid intake was a common factor across the studies finding no, or less severe, dehydration.

Conclusions

The evidence confirms that structural and wildfire firefighting can cause dehydration. Ad libitum drinking may be sufficient to maintain hydration in many wildfire environments but possibly not during intense, longer duration, hot structural fire operations. Future high quality research better quantifying the effects of these influences on the degree of dehydration is required to inform policies and procedures that ensure firefighter health and safety.


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Research Articles
Morbidity patterns among the welders of eastern Nepal: a cross-sectional study
Shyam Sundar Budhathoki, Suman Bahadur Singh, Surya Raj Niraula, Paras K. Pokharel
Ann Occup Environ Med 2016;28:62.   Published online November 15, 2016
DOI: https://doi.org/10.1186/s40557-016-0151-y
AbstractAbstract PDFPubReaderePub
Background

Welding process has many hazards that the welders are exposed to resulting in numbers of health effects and diseases. Safety measures and practices among welders are important ways of preventing or reducing the health hazards associated with this occupation. We conducted this study to find out the morbidity patterns among the welders working in eastern Nepal.

Methods

A cross sectional study was conducted among 300 welders using semi structured questionnaire. Morbidity categories were classified based on symptoms experienced in past 6 months.

Results

All the welders learned welding by apprenticeship, without any formal health and safety training. Injury was the most common problem at work followed by skin problems and eye symptoms. Age of the welders, duration of employment & welding hours per day were associated with the morbidities among the welders.

Conclusions

There is a need for occupational health services for welders in Nepal. While further research may be required to make policy recommendations, the current study provides a baseline morbidity burden among these welders to look for interventions to promote health and safety at work for this neglected group of workers in Nepal.


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    Blend Barzan Ameen, Sanaa Hassan Abdulsahibb
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  • Prevalence of visual impairment and associated factors among welders in West Shewa Zone Oromia Region
    Kassahun Rikita Bifessa, Fikadu Seyoum, Mihret Getnet, Kefyalew Naniye, Wabi Temesgen
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    Vishnu Prasad Sapkota, Umesh Prasad Bhusal, Govinda Prasad Adhikari, Kuo-Cherh Huang
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    Prajjwal Pyakurel, Jaya Prasad Tripathy, Myo Minn Oo, Bijay Acharya, Ujjwal Pyakurel, Suman Bahadur Singh, Laxmi Subedi, Kamlesh Prasad Yadav, Mukesh Poudel, Dipesh Raj Pandey, Shyam Sundar Budhathoki, Guna Raj Lohani, Nilambar Jha
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Descriptive study of claims for occupational mental disorders or suicide
Jihoon Lee, Inah Kim, Sooyong Roh
Ann Occup Environ Med 2016;28:61.   Published online October 20, 2016
DOI: https://doi.org/10.1186/s40557-016-0147-7
AbstractAbstract PDFPubReaderePub
Background

This study aimed to identify the characteristics of claimed mental disorders. Because the workers believed the cause of the mental disorders was work-related stress or a specific event, we could identify the major work-related stressor for claimed cases.

Methods

We included claimed cases of occupational mental disorder or suicide reported during 2010–2014 to the Korea Workers Compensation and Welfare Service (KCOMWEL), established by Industrial Accidents Insurance (IACI) Act. We conducted qualitative analysis using a form specifically developed for this study as well as a quantitative analysis.

Results

Of the 569 claimed cases, 142 cases were recognized as occupational mental disorder or suicide. The approval rate was 24.9 %. Suicide was the most commonly approved mental disorder (23.0 %), followed by major depressive disorder (14.9 %). Regarding profession, 109 workers were managers, and 95 workers were office clerks. The main work-related stressors of the approved cases were acute stressful events (76 cases), long working hours (12 cases), and changes in workload (6 cases). The primary stressful events were work-related legal problems, workplace violence, and employment status-related issues.

Conclusion

Claims due to mental disorders or suicide increased during the 5-year study period, and the approval rate was approximately 33 %, and the main stressor of the claimed cases was an acute stressful event such as physiologic trauma, employment-related issues, fear of legal or financial responsibility, abrupt change in organizational responsibility, or workplace violence.


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    Hong Chen, Bei Liu, Yi Li, Yujie Cai
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    Ji-Sung Ahn, Seunghyeon Cho, Won-Ju Park
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    Kyuyeon Kim, Inah Kim, Kanwoo Youn
    Annals of Occupational and Environmental Medicine.2020;[Epub]     CrossRef
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    Kang Soo Lee, So Young Joo, Cheong Hoon Seo, Joo-Eon Park, Boung Chul Lee
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    Inah Kim, Min Ji Koo, Hye-Eun Lee, Yong Lim Won, Jaechul Song
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    Masaya Takahashi
    Journal of Occupational Health.2019; 61(4): 269.     CrossRef
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    BongKyoo Choi
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    Takashi Yamauchi, Takeshi Sasaki, Toru Yoshikawa, Shun Matsumoto, Masaya Takahashi, Machi Suka, Hiroyuki Yanagisawa
    Journal of Occupational & Environmental Medicine.2018; 60(4): e178.     CrossRef
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    T Yamauchi, T Sasaki, T Yoshikawa, S Matsumoto, M Takahashi
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    Takashi YAMAUCHI, Toru YOSHIKAWA, Takeshi SASAKI, Shun MATSUMOTO, Masaya TAKAHASHI, Machi SUKA, Hiroyuki YANAGISAWA
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Relating factors to wearing personal radiation protectors among healthcare professionals
Yunjeong Heo, Hosun Chun, Seonghoon Kang, Wonjin Lee, Taewon Jang, Jongtae Park
Ann Occup Environ Med 2016;28:60.   Published online October 20, 2016
DOI: https://doi.org/10.1186/s40557-016-0144-x
AbstractAbstract PDFPubReaderePub
Background

With increasing use of medical radiologic procedures, wearing proper protector should be emphasized to reduce occupational radiation exposures. This research describes the rates of lead apron wearing for radiation protection and assessed occupational factors related to wearing rates for various types of healthcare professionals.

Methods

We conducted a self-administered questionnaire survey through a website, on-site visits, fax, and mail. Of the 13,489 participants, 8858 workers who could not completely separate themselves from radiological procedure areas. Their general characteristics (sex and age), work history (job title, duration of employment, and hospital type), and practices (frequency of radiation procedures, ability to completely separate from radiation, and frequency of wearing protective lead aprons) were examined.

Results

The mean rate of lead apron wearing during radiologic procedures was 48.0 %. The rate was different according to sex (male: 52.9 %, female: 39.6 %), hospital type (general hospital: 63.0 %, hospital: 51.3 %, clinic: 35.6 %, dental hospital/clinic: 13.3 %, public health center: 22.8 %), and job title (radiologic technologist: 50.3 %, doctor: 70.3 %, dentist/dental hygienist: 15.0 %, nurse/nursing assistant: 64.5 %) (p < 0.001). By logistic regression analysis stratified by job title, use of lead aprons by radiologic technologists and nurses/nursing assistants was associated with hospital type and exposure frequency score. For doctors, apron wearing was associated with employment duration. For dentists/dental hygienists, apron wearing was associated with the exposure frequency score.

Conclusions

To improve working environments for healthcare professionals exposed to radiation, it is necessary to consider related factors, such as job title, duration of employment, and hospital type, when utilizing a planning and management system to prevent radiation-related health problems.


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  • Association between occupational testicular radiation exposure and lower male sex ratio of offspring among orthopedic surgeons
    Yasukazu Hijikata, Masayuki Nakahara, Akira Kusumegi, Junji Morii, Naoki Okubo, Nozomi Hatano, Yuichi Takahashi, Nobuyuki Hamada
    PLOS ONE.2021; 16(12): e0262089.     CrossRef
  • ESTIMATION OF ORGAN DOSES AMONG DIAGNOSTIC MEDICAL RADIATION WORKERS IN SOUTH KOREA
    Yeongchull Choi, Eun Shil Cha, Ye Jin Bang, Seulki Ko, Mina Ha, Choonsik Lee, Won Jin Lee
    Radiation Protection Dosimetry.2018; 179(2): 142.     CrossRef
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Relationship of workplace violence and perpetrators on sleep disturbance-data from the 4th Korean working conditions survey
Taejun Yoo, Byeongjin Ye, Jung-Il Kim, Siwoo Park
Ann Occup Environ Med 2016;28:59.   Published online October 19, 2016
DOI: https://doi.org/10.1186/s40557-016-0142-z
AbstractAbstract PDFPubReaderePub
Objective

The present study analyzed relationship of workplace violence and perpetrators of violence on sleep disturbance among wage workers in Korea.

Methods

The present study used data from the 4th Korean Working Conditions Survey (KWCS) of 2014 in selecting a total of 25,138wage workers as the study population, which excluded those who failed or refused to respond to questions required for the present study. The workplace violence experience group included people who satisfied at least one of six relevant criteria (verbal abuse, unwanted sexual attention, threatening or humiliating behavior, physical violence, bullying/harassment, and sexual harassment) and the group was divided according to whether the perpetrator of violence was a client or colleague. Presence of sleep disturbance was determined based on subjective symptoms felt within the past 12 months by each individual. A multiple logistic regression analysis was performed to identify the effects on sleep distance according to general, occupational, and psychosocial characteristics, as well as the types of workplace violence and perpetrators of violence.

Results

Workplace violence was found as a factor affecting sleep disturbance (OR = 3.773, 95 % CI = 3.058–4.655), and with respect to perpetrators of violence, complaint of sleep disturbance symptoms was higher when the perpetrator was a colleague or boss (OR = 5.688, 95 % CI 4.189–7.723) than a client (OR = 2.992, 95 % CI 2.301–3.890).

Conclusion

Workplace violence had an effect on occurrence of sleep disturbance and when the perpetrators of violence was a boss or colleague at work, the risk for symptoms such as sleep disturbance increased, which indicated the need for appropriate intervention from a workplace healthcare perspective, including preventive education of workplace violence among employees.


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    Hae Ran Kim
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  • The association between long working hours and work-related musculoskeletal symptoms of Korean wage workers: data from the fourth Korean working conditions survey (a cross-sectional study)
    Jae-Gwang Lee, Guang Hwi Kim, Sung Won Jung, Sang Woo Kim, June-Hee Lee, Kyung-Jae Lee
    Annals of Occupational and Environmental Medicine.2018;[Epub]     CrossRef
  • The association between perceived discriminations and well-being in Korean employed workers: the 4th Korean working conditions survey
    Hee Sung Lee, Guang Hwi Kim, Sung Won Jung, June-Hee Lee, Kyung-Jae Lee, Joo Ja Kim
    Annals of Occupational and Environmental Medicine.2017;[Epub]     CrossRef
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Self-resilience as a protective factor against development of post-traumatic stress disorder symptoms in police officers
Jong-Ku Lee, Hyeon-Gyeong Choi, Jae-Yeop Kim, Juhyun Nam, Hee-Tae Kang, Sang-Baek Koh, Sung-Soo Oh
Ann Occup Environ Med 2016;28:58.   Published online October 17, 2016
DOI: https://doi.org/10.1186/s40557-016-0145-9
AbstractAbstract PDFPubReaderePub
Background

This study was conducted to check whether self-resilience, one of the characteristics known to affect the occurrence of post-traumatic stress disorder (PTSD) symptoms after experiencing traumatic events, could serve as a protective factor for police officers whose occupational factors are corrected.

Methods

We conducted a cross-sectional study in which 112 male police officers in Gangwon Province participated. They visited the Wonju Severance Christian Hospital Occupational Environment Center for medical check-ups from June to December 2015. Their general characteristics were identified using structured questionnaires, and they were asked to fill in the Korean Occupational Stress Scale-Short Form (KOSS-SF). Further, the Center for Epidemiologic Studies-Depression Scale (CES-D), Connor–Davidson Resilience Scale-Korean (CD-RI-K), and Impact of Event Scale-Revised-Korean version (IES-R-K) were used to evaluate their job stress, depression, self-resilience, and PTSD symptoms. Logistic regression analysis was conducted to correct their personal, occupational, and psychological factors to analyze the relationship between self-resilience and PTSD symptoms.

Results

Among 112 respondents who experienced a traumatic event, those with low self-resilience had significantly higher rate of PTSD symptoms than those with high self-resilience even after correcting for the covariate of general, occupational, and psychological characteristics (odds ratio [OR] 3.51; 95 % CI: 1.06–19.23).

Conclusions

Despite several limitations, these results suggest that a high degree of self-resilience may protect police officers from critical incident-related PTSD symptoms.


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Computer use at work is associated with self-reported depressive and anxiety disorder
Taeshik Kim, Mo-Yeol Kang, Min-sang Yoo, Dongwook Lee, Yun-Chul Hong
Ann Occup Environ Med 2016;28:57.   Published online October 13, 2016
DOI: https://doi.org/10.1186/s40557-016-0146-8
AbstractAbstract PDFPubReaderePub
Background

With the development of technology, extensive use of computers in the workplace is prevalent and increases efficiency. However, computer users are facing new harmful working conditions with high workloads and longer hours. This study aimed to investigate the association between computer use at work and self-reported depressive and anxiety disorder (DAD) in a nationally representative sample of South Korean workers.

Methods

This cross-sectional study was based on the third Korean Working Conditions Survey (2011), and 48,850 workers were analyzed. Information about computer use and DAD was obtained from a self-administered questionnaire. We investigated the relation between computer use at work and DAD using logistic regression.

Results

The 12-month prevalence of DAD in computer-using workers was 1.46 %. After adjustment for socio-demographic factors, the odds ratio for DAD was higher in workers using computers more than 75 % of their workday (OR 1.69, 95 % CI 1.30−2.20) than in workers using computers less than 50 % of their shift. After stratifying by working hours, computer use for over 75 % of the work time was significantly associated with increased odds of DAD in 20–39, 41–50, 51–60, and over 60 working hours per week. After stratifying by occupation, education, and job status, computer use for more than 75 % of the work time was related with higher odds of DAD in sales and service workers, those with high school and college education, and those who were self-employed and employers.

Conclusions

A high proportion of computer use at work may be associated with depressive and anxiety disorder. This finding suggests the necessity of a work guideline to help the workers suffering from high computer use at work.

Electronic supplementary material

The online version of this article (doi:10.1186/s40557-016-0146-8) contains supplementary material, which is available to authorized users.


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  • Association between Kinesiophobia, Anxiety, and Chronic Neck Pain among Computer Programmers in Bangalore
    Kamakshi Ghaie, Milan Anand
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    Eunsoo Kim, Chul-Hyun Park, Hyun-Seung Lee, Mi Yeon Lee, Sung Joon Cho
    Brain Sciences.2024; 14(7): 729.     CrossRef
  • Association between receiving work communications outside of work hours via telecommunication devices and work-related headaches and eyestrain: a cross-sectional analysis of the 6th Korean Working Conditions Survey
    Yoon-Soo Jang, Jae-Han Lee, Na-Rae Lee, Dong-Woo Kim, June-Hee Lee, Kyung-Jae Lee
    Annals of Occupational and Environmental Medicine.2023;[Epub]     CrossRef
  • Teaching after the pandemic: The role of technostress and organizational support on intentions to adopt remote teaching technologies
    Alessandro Gabbiadini, Giulia Paganin, Silvia Simbula
    Acta Psychologica.2023; 236: 103936.     CrossRef
  • Influence of Prolonged Visual Display Terminal Use on Physical and Mental Conditions among Health Care Workers at Tertiary Hospitals, Taiwan
    Meng-Ting Tsou
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  • Occurrence of Mental Illness and Mental Health Risks among the Self-Employed: A Systematic Review
    Kristina Willeke, Patrick Janson, Katharina Zink, Carolin Stupp, Sarah Kittel-Schneider, Anne Berghöfer, Thomas Ewert, Ryan King, Peter U. Heuschmann, Andreas Zapf, Manfred Wildner, Thomas Keil
    International Journal of Environmental Research and Public Health.2021; 18(16): 8617.     CrossRef
  • Haben digitale Technologien bei der Arbeit Einfluss auf die psychische Gesundheit?
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  • Effects of prolonged continuous computer gaming on physical and ocular symptoms and binocular vision functions in young healthy individuals
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Risk factors for lesions of the knee menisci among workers in South Korea’s national parks
Donghee Shin, Kanwoo Youn, Eunja Lee, Myeongjun Lee, Hweemin Chung, Deokweon Kim
Ann Occup Environ Med 2016;28:56.   Published online October 10, 2016
DOI: https://doi.org/10.1186/s40557-016-0143-y
AbstractAbstract PDFPubReaderePub
Background

This study was designed to investigate the prevalence of the menisci lesions in national park workers and work factors affecting this prevalence.

Methods

The study subjects were 698 workers who worked in 20 Korean national parks in 2014. An orthopedist visited each national park and performed physical examinations. Knee MRI was performed if the McMurray test or Apley test was positive and there was a complaint of pain in knee area. An orthopedist and a radiologist respectively read these images of the menisci using a grading system based on the MRI signals. To calculate the cumulative intensity of trekking of the workers, the mean trail distance, the difficulty of the trail, the tenure at each national parks, and the number of treks per month for each worker from the start of work until the present were investigated. Chi-square tests was performed to see if there were differences in the menisci lesions grade according to the variables. The variables used in the Chi-square test were evaluated using simple logistic regression analysis to get crude odds ratios, and adjusted odds ratios and 95 % confidence intervals were calculated using multivariate logistic regression analysis after establishing three different models according to the adjusted variables.

Results

According to the MRI signal grades of menisci, 29 % were grade 0, 11.3 % were grade 1, 46.0 % were grade 2, and 13.7 % were grade 3. The differences in the MRI signal grades of menisci according to age and the intensity of trekking as calculated by the three different methods were statistically significant. Multiple logistic regression analysis was performed for three models. In model 1, there was no statistically significant factor affecting the menisci lesions. In model 2, among the factors affecting the menisci lesions, the OR of a high cumulative intensity of trekking was 4.08 (95 % CI 1.00–16.61), and in model 3, the OR of a high cumulative intensity of trekking was 5.84 (95 % CI 1.09–31.26).

Conclusion

The factor that most affected the menisci lesions among the workers in Korean national park was a high cumulative intensity of trekking.


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  • Analysis of Knee Joint Injury Caused by Physical Training of Freshmen Students Based on 3T MRI and Automatic Cartilage Segmentation Technology: A Prospective Study
    Lingling Liu, Henan Liu, Zhiming Zhen, Yalan Zheng, Xiaoyue Zhou, Esther Raithel, Jiang Du, Yan Hu, Wei Chen, Xiaofei Hu
    Frontiers in Endocrinology.2022;[Epub]     CrossRef
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The association between long working hours and hearing impairment in noise unexposed workers: data from the 5th Korea National Health and Nutrition Examination Survey (KNHANES 2010–2012)
Jung-Woo Park, Jin-Soo Park, Seyoung Kim, Minkyu Park, Hyunrim Choi, Sinye Lim
Ann Occup Environ Med 2016;28:55.   Published online October 6, 2016
DOI: https://doi.org/10.1186/s40557-016-0140-1
AbstractAbstract PDFPubReaderePub
Background

This study is aimed at finding out the relationship between long working hours, one of major job stress elements, and hearing impairment in unexposed workers to occupational and environmental noise.

Methods

This study was performed on 1628 regular, full-time wage workers between the age of 25-64 who indicated in the survey of having no experience of exposure to noise, normal otoscopic findings, and not suffering from diabetes based on the data from the fifth Korea National Health and Nutrition Examination Survey (KNHANES 2010–2012). The average working hours per week was categorized into 40 h and lower group, more than 40 to 48 h group, more than 48 to 60 h group, and more than 60 h group. The groups were defined as suffering from low or high frequencies hearing impairment if the average hearing threshold for 0.5, 1, 2 kHz or 3, 4, 6 kHz in both ears exceeds 25 dB based on the pure tone audiometry. The association between average weekly working hours and hearing impairment was analyzed using logistic regression after gender stratification.

Results

The prevalences of low and high frequencies hearing impairment in male workers were 4.3 and 28.6 %, respectively, which were much higher than female’s prevalence of 2.7 and 11.1 %. For male workers, no significant association was found between average weekly working hours and low and high frequencies hearing impairment. For female workers, odds ratios (OR) of low and high frequencies hearing impairment were 4.22 (95 % confidence interval (CI) 1.09–16.27) and 4.49 (95 % CI 1.73–11.67), respectively, after controlling for several related factors, such as, age, Body Mass Index (BMI), socio-economic status, health-related behavioral, and occupational characteristics variables, in the final model in the group working more than 60 h compared to the group working 40 h and lower. In addition, a dose-response relationship was observed that ORs of low and high frequencies hearing impairment were increased according to increasing average weekly working hours.

Conclusions

The association between long working hours and hearing impairment in both low and high frequencies was significant in Korean female workers with a dose-response relationship. Therefore, the law to change the culture of long working hours should be enacted in order to protect the workers’ health and improve the quality of life in Korean workers.


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    Belgheis Mohammadi, Leila Nazari Robati, Zeinab Tavakol, Mina Movahhed
    Health Science Reports.2024;[Epub]     CrossRef
  • Characteristics of Auditory Brainstem Response in Night-shift Health Workers
    Samir Kumar Singh, Poonam Jyoti Rana, Anita Gupta, Dibyodyuti Samaddar, Hanjabam Barun Sharma
    Annals of Neurosciences.2024;[Epub]     CrossRef
  • Hearing Impairment and Allostatic Load in Older Adults
    Eric Y. Du, Kening Jiang, Michelle C. Carlson, Nicholas S. Reed, Jennifer A. Deal
    JAMA Otolaryngology–Head & Neck Surgery.2023; 149(7): 597.     CrossRef
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    Journal of Occupational & Environmental Medicine.2022; 64(3): 190.     CrossRef
  • Long working hours are associated with a higher risk of non-alcoholic fatty liver disease: A large population-based Korean cohort study
    Yesung Lee, Eunchan Mun, Soyoung Park, Woncheol Lee, Jee-Fu Huang
    PLOS ONE.2021; 16(7): e0255118.     CrossRef
  • Can listening-related fatigue influence well-being? Examining associations between hearing loss, fatigue, activity levels and well-being
    Jack A. Holman, Benjamin W. Y. Hornsby, Fred H. Bess, Graham Naylor
    International Journal of Audiology.2021; 60(sup2): 47.     CrossRef
  • Occupational Differences in C-Reactive Protein Among Working-Age Adults in South Korea
    Yongjoo Kim, Masayoshi Zaitsu, Kanami Tsuno, Xiaoyu Li, Sunmin Lee, Soong-nang Jang, Ichiro Kawachi
    Journal of Occupational & Environmental Medicine.2020; 62(3): 194.     CrossRef
  • Audiometric notch for the prediction of early occupational hearing loss and its association with the interleukin-1beta genotype
    Nagat M. Amer, Mona M. Taha, Khadiga S. Ibrahim, Heba M. Abdallah, Eman M. El Tahlawy
    Journal of Taibah University Medical Sciences.2019; 14(3): 289.     CrossRef
  • Long working hours are associated with unmet dental needs in south Korean male adults who have experienced dental pain
    Yitak Kim, Sangwon Lee, Juyeong Kim, Eun-Cheol Park, Sung-In Jang
    BMC Oral Health.2019;[Epub]     CrossRef
  • Severe hearing impairment and risk of depression: A national cohort study
    So Young Kim, Hyung-Jong Kim, Eun-Kyu Park, Jiwon Joe, Songyong Sim, Hyo Geun Choi, Manuel S. Malmierca
    PLOS ONE.2017; 12(6): e0179973.     CrossRef
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Ambulatory heart rate of professional taxi drivers while driving without their typical psychosocial work stressors: a pilot study
BongKyoo Choi, SangJun Choi, JeeYeon Jeong, JiWon Lee, Shi Shu, Nu Yu, SangBaek Ko, Yifang Zhu
Ann Occup Environ Med 2016;28:54.   Published online October 6, 2016
DOI: https://doi.org/10.1186/s40557-016-0139-7
AbstractAbstract PDFPubReaderePub
Background

Few studies have examined ambulatory cardiovascular physiological parameters of taxi drivers while driving in relation to their occupational hazards. This study aims to investigate and quantify the impact of worksite physical hazards as a whole on ambulatory heart rate of professional taxi drivers while driving without their typical worksite psychosocial stressors.

Methods

Ambulatory heart rate (HRdriving) of 13 non-smoking male taxi drivers (24 to 67 years old) while driving was continuously assessed on their 6-hour experimental on-road driving in Los Angeles. Percent maximum HR range (PMHRdriving) of the drivers while driving was estimated based on the individual HRdriving values and US adult population resting HR (HRrest) reference data. For analyses, the HRdriving and PMHRdriving data were split and averaged into 5-min segments. Five physical hazards inside taxi cabs were also monitored while driving. Work stress and work hours on typical work days were self-reported.

Results

The means of the ambulatory 5-min HRdriving and PMHRdriving values of the 13 drivers were 80.5 bpm (11.2 bpm higher than their mean HRrest) and 10.7 % (range, 5.7 to 19.9 %), respectively. The means were lower than the upper limits of ambulatory HR and PMHR for a sustainable 8-hour work (35 bpm above HRrest and 30 % PMHR), although 15–27 % of the 5-min HRdriving and PMHRdriving values of one driver were higher than the limits. The levels of the five physical hazards among the drivers were modest: temperature (26.4 ± 3.0 °C), relative humidity (40.7 ± 10.4 %), PM2.5 (21.5 ± 7.9 μg/m3), CO2 (1,267.1 ± 580.0 ppm) and noise (69.7 ± 3.0 dBA). The drivers worked, on average, 72 h per week and more than half of them reported that their job were often stressful.

Conclusions

The impact of physical worksite hazards alone on ambulatory HR of professional taxi drivers in Los Angeles generally appeared to be minor. Future ambulatory heart rate studies including both physical and psychosocial hazards of professional taxi drivers are warranted.


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  • Cardiovascular health status of taxi/for-hire vehicle drivers in the United States: A systematic review
    Sheena Mirpuri, Kathryn Traub, Sara Romero, Marisol Hernandez, Francesca Gany
    Work.2021; 69(3): 927.     CrossRef
  • Lurking in plain sight: Hypertension awareness and treatment among New York City taxi/for‐hire vehicle drivers
    Bharat Narang, Sheena Mirpuri, Soo Young Kim, Devika R. Jutagir, Francesca Gany
    The Journal of Clinical Hypertension.2020; 22(6): 962.     CrossRef
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Relationship between thyroid stimulating hormone and night shift work
So-Hyun Moon, Bum-Joon Lee, Seong-Jin Kim, Hwan-Cheol Kim
Ann Occup Environ Med 2016;28:53.   Published online October 6, 2016
DOI: https://doi.org/10.1186/s40557-016-0141-0
AbstractAbstract PDFPubReaderePub
Background

Night shift work has well-known adverse effects on health. However, few studies have investigated the relationship between thyroid diseases and night shift work. This study aimed to examine night shift workers and their changes in thyroid stimulating hormones (TSH) levels over time.

Methods

Medical check-up data (2011–2015) were obtained from 967 female workers at a university hospital in Incheon, Korea. Data regarding TSH levels were extracted from the records, and 2015 was used as a reference point to determine night shift work status. The relationships between TSH levels and night shift work in each year were analyzed using the general linear model (GLM). The generalized estimating equation (GEE) was used to evaluate the repeated measurements over the 5-year period.

Results

The GEE analysis revealed that from 2011 to 2015, night shift workers had TSH levels that were 0.303 mIU/L higher than the levels of non-night shift workers (95 % CI: 0.087–0.519 mIU/L, p = 0.006) after adjusting for age and department. When we used TSH levels of 4.5 ≥ mIU/L to identify subclinical hypothyroidism, night shift workers exhibited a 1.399 fold higher risk of subclinical hypothyroidism (95 % CI: 1.050–1.863, p = 0.022), compared to their non-night shift counterparts.

Conclusions

This result of this study suggests that night shift workers may have an increased risk of thyroid diseases, compared to non-night shift workers.


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    Ahmad Soltanzadeh, Meysam Eyvazlou, Mostafa Mohammad-ghasemi, Mansoureh Sadeghi-Yarandi, Monireh Rahimkhani, Neda Ghasemi, Mojdeh Bonyadi, Mohsen Sadeghi-Yarandi
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    Christos Savvidis, Efthymia Kallistrou, Eleni Kouroglou, Sofia Dionysopoulou, Georgios Gavriiloglou, Dimitra Ragia, Vasiliki Tsiama, Stella Proikaki, Konstantinos Belis, Ioannis Ilias
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  • Association between shift work and the risk of hypothyroidism in adult male workers in Korea: a cohort study
    Seonghyeon Kwon, Yesung Lee, Eunhye Seo, Daehoon Kim, Jaehong Lee, Youshik Jeong, Jihoon Kim, Jinsook Jeong, Woncheol Lee
    Annals of Occupational and Environmental Medicine.2023;[Epub]     CrossRef
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    Hun Jeong, Chang Ho Chae, Jun Ho Lee, Hyo Won Chong
    Annals of Occupational and Environmental Medicine.2023;[Epub]     CrossRef
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    Kyriaki Papantoniou, Peter Konrad, Shahab Haghayegh, Susanne Strohmaier, A. Heather Eliassen, Eva Schernhammer
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    Jingyi Luo, Shan Ding, Weihao Wang, Jingwen Fan, Xiaoye Duan, Qi Pan, Lixin Guo
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    Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease.2023; 1869(6): 166729.     CrossRef
  • Work-related factors affecting the thyroid hormone levels among workers in different sectors
    Seher KURTUL, Meral TÜRK
    Ege Tıp Dergisi.2022; 61(3): 476.     CrossRef
  • Low-Dose Occupational Exposure to Nickel and Thyroid Hormones
    Carlo Monti, Grazia Giammichele, Vittorio Antuono, Beatrice Loreti, Francesco Tomei, Federica De Marco, Roberto Massimi, Stefania Marchione, Anastasia Suppi, Gianfranco Tomei, Serafino Ricci
    Journal of Occupational & Environmental Medicine.2022; 64(11): e667.     CrossRef
  • The Relationship Between Night Shift Work and the Risk of Abnormal Thyroid-Stimulating Hormone: A Hospital-Based Nine-Year Follow-up Retrospective Cohort Study in Taiwan
    Hsin-Hao Chen, Hsiao-Hui Chiu, Tzu-Lin Yeh, Chi-Min Lin, Hsin-Yi Huang, Shang-Liang Wu
    Safety and Health at Work.2021; 12(3): 390.     CrossRef
  • Relationship between shift work and age-related macular degeneration: a cross-sectional analysis of data from the 5th Korea National Health and Nutrition Examination Survey (2010–2012)
    Kibeom Kim, Seongyong Yoon, Jinseok Kim, Kuck-Hyun Woo, Seong-yong Cho, Ha-ram Jo
    Annals of Occupational and Environmental Medicine.2021;[Epub]     CrossRef
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    Dong Zhang, Rena R. Jones, Peter James, Cari M. Kitahara, Qian Xiao
    Cancer.2021; 127(9): 1448.     CrossRef
  • Long Work Hours Are Associated with Hypothyroidism: A Cross-Sectional Study with Population-Representative Data
    Young Ki Lee, Dong-eun Lee, Yul Hwangbo, You Jin Lee, Hyeon Chang Kim, Eun Kyung Lee
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  • Thyroid Cancer and Circadian Clock Disruption
    Roberta Malaguarnera, Caterina Ledda, Agnese Filippello, Francesco Frasca, Vincenzo Cristian Francavilla, Tiziana Ramaci, Maria Chiara Parisi, Venerando Rapisarda, Salvatore Piro
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  • Association of Work Patterns and Periodontitis Prevalence in Korean Adults Aged 50 Years or Older: A Nationwide Representative Study
    Young Jin Ra, Young Jin Tak, Yun Jin Kim, Sang Yeoup Lee, Jeong Gyu Lee, Yu Hyeon Yi, Young Hye Cho, Hye Rim Hwang, Seung Hun Lee, Eun Ju Park, Young In Lee
    International Journal of Environmental Research and Public Health.2020; 17(11): 4006.     CrossRef
  • The Impact of Shift-Work and Night Shift-Work on Thyroid: A Systematic Review
    Veruscka Leso, Ilaria Vetrani, Alessandra Sicignano, Rosaria Romano, Ivo Iavicoli
    International Journal of Environmental Research and Public Health.2020; 17(5): 1527.     CrossRef
  • Association of postprandial triglyceride responses with insulin resistance among rotational night shift healthcare workers
    Keithellakpam Kiranmala, Mohammad Aslam, Brijesh Kumar Mishra, Rajat Jhamb, Sri Venkata Madhu
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  • Relationship between shift work and liver enzymes: a cross-sectional study based on the Korea National Health and Examination Survey (2007–2015)
    Hyeongyeong Choi, Hyun-Jeong Oh, Ji-Su Shin, MyeongSeob Lim, Sung-Kyung Kim, Hee-Tae Kang, Sung-Soo Oh, Sang-Baek Koh
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  • Impact of shift work on sleep problems, hormonal changes, and features of metabolic syndrome in a sample of Egyptian industrial workers
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Air pollution and urinary n-acetyl-B-glucosaminidase levels in residents living near a cement plant
Min Soo Jung, Jae Yoon Kim, Hyun Seung Lee, Chul Gab Lee, Han Soo Song
Ann Occup Environ Med 2016;28:52.   Published online September 29, 2016
DOI: https://doi.org/10.1186/s40557-016-0138-8
AbstractAbstract PDFPubReaderePub
Background

To identify adverse renal effects due to air pollution derived from a cement plant in Korea. Urinary n-acetyl-B-glucosaminidase (U-NAG) levels in residents living near a cement plant were compared to those in a group who lived farther away from the plant.

Methods

From June to August 2013 and from August to November 2014, laboratory tests for U-NAG and heavy metal were conducted on 547 study participants. Based on the level of air pollution exposure, subjects were divided into the “less exposed group,” (LEG) which consisted of 66 persons who lived more than 5 km away from the cement plant, the “more exposed group from the rural area” (MEG-R), which consisted of 272 persons, and the “more exposed group from downtown area” (MEG-D), which consisted of 209 persons who lived within a 1 km radius of the cement plant. U-NAG levels >5.67 U/L were defined as “higher U-NAG” levels. We compared the prevalence of higher U-NAG levels and estimated the adjusted odds ratio (OR) by air pollution exposure using a chi-square test and multiple logistic regression analysis. Further, we estimated the interaction between air pollution exposure and heavy metal exposure in renal toxicity.

Results

The OR of higher U-NAG levels by MEG-D and MEG-R compared to LEG was 2.13 (95 % CI 0.86–4.96) and 4.79 (95 CI 1.65–10.01), respectively. Urinary cadmium (U-Cd), urinary mercury (U-Hg), age, occupation, hypertension, and diabetes had a significant association with higher U-NAG levels. However, blood lead (B-Pb), sex, and smoking were not associated with higher U-NAG. Especially, concurrent exposure to heavy metals (U-Hg or/and U-Cd) and air pollution had an additive adverse effect. In the group with both 4th quartile heavy metal exposure (U-Cd or/and U-Hg) and air pollution exposure, the OR in MEG-R and MEG-D was 6.49 (95 % 1.42–29.65) and 8.12 (95 % CI 1.74–37.92), respectively, after adjustment for age, occupation, hypertension, diabetes.

Conclusions

U-NAG levels seem to be affected by air pollution exposure as well as age, hypertension, diabetes, and even low levels of cadmium and low levels of mercury. Moreover, concurrent exposure to heavy metals and air pollution can have additive cytotoxic renal effects.


Citations

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  • Mechanisms of microbial resistance against cadmium – a review
    Monu Sharma, Sonu Sharma, Paavan, Mahiti Gupta, Soniya Goyal, Daizee Talukder, Mohd. Sayeed Akhtar, Raman Kumar, Ahmad Umar, Abdulrab Ahmed M. Alkhanjaf, Sotirios Baskoutas
    Journal of Environmental Health Science and Engineering.2023; 22(1): 13.     CrossRef
  • The Validity of Benchmark Dose Limit Analysis for Estimating Permissible Accumulation of Cadmium
    Soisungwan Satarug, David A. Vesey, Glenda C. Gobe, Aleksandra Đorđević
    International Journal of Environmental Research and Public Health.2022; 19(23): 15697.     CrossRef
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    Martin Massányi, Soisungwan Satarug, Roberto Madeddu, Robert Stawarz, Peter Massányi
    Stresses.2021; 2(1): 1.     CrossRef
  • Particulate matter pollution and hospital outpatient visits for endocrine, digestive, urological, and dermatological diseases in Nanjing, China
    Ce Wang, Guangcan Zhu, Lei Zhang, Kai Chen
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Comparisons of hearing threshold changes in male workers with unilateral conductive hearing loss exposed to workplace noise: a retrospective cohort study for 8 years
Sang Jin Park, Joo Hyun Sung, Chang Sun Sim, Seok Hyeon Yun, Jeong Han Yeom, Joong-Keun Kwon, Jiho Lee
Ann Occup Environ Med 2016;28:51.   Published online September 22, 2016
DOI: https://doi.org/10.1186/s40557-016-0132-1
AbstractAbstract PDFPubReaderePub
Background

The purpose of this study was to investigate hearing threshold changes of workers with unilateral conductive hearing loss who were exposed to workplace noise for 8-years.

Methods

Among 1819 workers at a shipyard in Ulsan, 78 subjects with an air-bone gap ≥10 dBHL in unilateral ears were selected. Factors that could affect hearing were acquired from questionnaires, physical examinations, and biochemistry examinations. Paired t-test was conducted to compare the hearing threshold changes over time between conductive hearing loss (CHL) ear and sensorineural hearing loss (SNHL) ear.

Results

The study included male subjects aged 48.7 ± 2.9, having worked for 29.8 ± 2.7 years. Hearing thresholds increased significantly in CHL ears and SNHL ears at all frequencies (0.5–6 kHz) during follow-up period (p < 0.05). The threshold change at 4 kHz was 3.2 dBHL higher in SNHL ears which was statistically significant (p < 0.05). When workers were exposed to noise levels of 85 dBA and above, threshold change at 4 kHz was 5.6 dBHL higher in SNHL ears which was statistically significant (p < 0.05). Among workers aged below 50, the threshold change values were lower in low-frequency (0.5–2 kHz) in SNHL ears, with a small range of changes, whereas in high-frequency (3–6 kHz), the range of changes was greater SNHL ears (p < 0.05). Among workers aged 50 and above, SNHL ears showed a wider range of changes in both high- and low-frequency areas (p < 0.05).

Conclusions

At high-frequencies, particularly at 4 kHz, the range of hearing threshold changes was lower in ears with conductive hearing loss than in contralateral ears. This is suggested as a protective effect against noise exposure.


Citations

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  • Prevalence of Pre-Existing Hearing Loss Among Patients With Drug-Resistant Tuberculosis in South Africa
    Hyejeong Hong, David W. Dowdy, Kelly E. Dooley, Howard W. Francis, Chakra Budhathoki, Hae-Ra Han, Jason E. Farley
    American Journal of Audiology.2020; 29(2): 199.     CrossRef
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Gender differences in Reasons for Sickness Presenteeism - a study among GPs in a Swedish health care organization
Marie Gustafsson Sendén, Karin Schenck-Gustafsson, Ann Fridner
Ann Occup Environ Med 2016;28:50.   Published online September 20, 2016
DOI: https://doi.org/10.1186/s40557-016-0136-x
AbstractAbstract PDFPubReaderePub
Background

It is common that physicians go to work while sick and therefore it is important to understand the reasons behind. Previous research has shown that women and men differ in health and health related behavior. In this study, we examine gender differences among general practitioners who work while sick.

Methods

General practitioners (GP’s) working in outpatient care in a Swedish city participated in the study (n = 283; women = 63 %; response rate = 41 %). Data were obtained from a large web-based questionnaire about health and organization within primary care. Two questions about sickness presenteeism (going to work while sick) were included; life-long and during the past 12 months, and five questions about reasons. We controlled for general health, work-family conflict and demographic variables.

Results

Female physicians reported sickness presenteeism more often than male physicians. Work-family conflict mediated the association between gender and sickness presenteeism.

Women reported reasons related with “concern for others” and “workload” more strongly than men. Men reported reasons related with “capacity” and “money” more strongly than women. These differences are likely effects of gender stereotyping and different family-responsibilities.

Conclusions

Gender socialization and gender stereotypes may influence work and health-related behavior. Because sickness presenteeism is related with negative effects both on individuals and at organizational levels, it is important that managers of health organizations understand the reasons for this, and how gender roles may influence the prevalence of sickness presenteeism and the reasons that female and male GPs give for their behavior.


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    Salim Yılmaz, Selma Söyük
    Revista de Administração de Empresas.2024;[Epub]     CrossRef
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    Albert Navarro, Sergio Salas‐Nicás, Clara Llorens, Salvador Moncada, Emilia Molinero‐Ruíz, David Moriña
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    Albert Navarro, Sergio Salas-Nicás, Salvador Moncada, Clara Llorens, Emilia Molinero-Ruiz
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Association between second-hand smoke and psychological well-being amongst non-smoking wageworkers in Republic of Korea
Seong-Jin Kim, Dirga Kumar Lamichhane, Shin-Goo Park, Bum-Joon Lee, So-Hyun Moon, Sung-Min Park, Hyun-Suk Jang, Hwan-Cheol Kim
Ann Occup Environ Med 2016;28:49.   Published online September 20, 2016
DOI: https://doi.org/10.1186/s40557-016-0130-3
AbstractAbstract PDFPubReaderePub
Background

Worldwide, exposure to second-hand smoke (SHS) has been responsible for more than 0.6 million deaths and 10.9 million disability-adjusted life years (DALYS) lost in never smokers in 2004. The world health organization (WHO) reported smoking-related death of 58,000 per year in South Korea. There is recent emerging evidence of the associations of SHS exposure with anxiety or depression and poor mental health. Although exposure to second-hand smoke (SHS) has been associated with various physical health conditions and mental health, we are unaware of any studies examining its association with psychological well-being as mental factor. This study aimed to investigate the association between self-reported exposure to SHS and well-being among non-smoking wageworkers. 

Methods

The Third Korean Working Conditions Survey (KWCS, 2011) was conducted on a representative sample of economically active population aged 15 years or over, who were either employees or self-employed at the time of interview. In this study, after removing inconsistent data, 19,879 non-smoking wageworkers among 60,054 workers were participated. Psychological well-being was measured through the WHO-Five Well-Being Index (1998 version). Univariate and multiple logistic regression models were used to examine the association of SHS exposure with psychological well-being.

Results

The unadjusted OR of poor psychological well-being (OR: 1.594, 95 % CI: 1.421-1.787) was significantly higher for SHS exposure group compared to non-exposure group. Multiple logistic regression analysis results indicated that these relationships were still significant after adjusting for potential confounders (adjusted OR: 1.330, 95 % CI: 1.178-1.502).

Conclusions

Exposure to SHS was associated with poor well-being measured by the WHO-5 well-being index, indicating the importance of reducing SHS exposure at the workplace for psychological well-being amongst non-smoking wageworkers.


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Night shift work and inflammatory markers in male workers aged 20–39 in a display manufacturing company
Seong-Woo Kim, Eun-Chul Jang, Soon-Chan Kwon, Wook Han, Min-Sung Kang, Young-Hyeon Nam, Yong-Jin Lee
Ann Occup Environ Med 2016;28:48.   Published online September 20, 2016
DOI: https://doi.org/10.1186/s40557-016-0135-y
AbstractAbstract PDFPubReaderePub
Background

This study aimed to determine the association between shift work and inflammatory markers, which are independent risk factors of cardiovascular diseases, in male manual workers at a display manufacturing company.

Methods

This study was conducted between June 1 and July 31, 2015 on 244 male manual workers aged 20–39 years old at a display manufacturing company and investigated age, marital status, education level, alcohol consumption habit, smoking habit, regular exercise habit, sleep duration, sleep debt, sleep insufficiency, past medical history, current and past shift work experience, duration of shift work, and weekly work hours through face-to-face interviews using structured questionnaires and performed blood tests. Study participants were divided into daytime, former shift, and current shift workers based on the work schedule. Chi-square tests and one-way analyses of variance were performed to compare inflammatory markers and cardiovascular disease risk factors, and analyses of covariance were conducted after adjusting for variables potentially affecting inflammatory markers.

Results

High-sensitivity C-reactive protein (hs-CRP; mean ± standard deviation) levels in daytime, former shift, and current shift workers were 0.65 ± 0.43, 0.75 ± 0.43, and 0.86 ± 0.72 mg/L, respectively (p = 0.029). The leukocyte count (mean ± standard deviation) was 5,556 ± 1,123, 6,210 ± 1,366, and 6,530 ± 1,216 cells/μL, respectively (p < 0.001). Both hs-CRP level and leukocyte count were significantly higher in current shift workers than in daytime workers, and leukocyte count was higher in former shift workers than in daytime workers. After adjusting for variables potentially affecting inflammatory markers, hs-CRP levels (adjusted mean ± standard deviation) in daytime and current shift workers were 0.59 ± 0.06 and 0.92 ± 0.07 mg/L, respectively (p = 0.002). The leukocyte count (adjusted mean ± standard deviation) was 5,557 ± 124 and 6,498 ± 144 cells/μL, respectively (p < 0.001).

Conclusions

A significant association between shift work and increases in inflammatory markers was confirmed. Because chronic low-grade inflammation plays an important role in the development of cardiovascular diseases, regular follow-up of inflammatory markers as a marker of cardiovascular diseases in shift workers may serve as an early indicator in predicting the effects of shift work on health.


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Comparison of anxiety and depression status between office and manufacturing job employees in a large manufacturing company: a cross sectional study
WonYang Kang, Won-Ju Park, Keun-Ho Jang, Hyeong-Min Lim, Ji-Sung Ann, Seung-hyeon Cho, Jai-Dong Moon
Ann Occup Environ Med 2016;28:47.   Published online September 15, 2016
DOI: https://doi.org/10.1186/s40557-016-0134-z
AbstractAbstract PDFPubReaderePub
Background

The aim of this study was to investigate whether type of work is associated with anxiety and depression using the Hospital Anxiety and Depression Scale (HADS). Additionally, we investigated the impact of number of working hours on anxiety and depression.

Methods

A total of 1774 workers participated and completed the HADS to determine their levels of anxiety and depression. All subjects were employed at one of two manufacturing plants for the same company. Of all participants, 222 were employed in office jobs and 1552 in manufacturing jobs.

Results

Results of multivariate logistic regression analysis including age, sex, body mass index, smoking status, alcohol consumption, regular exercise, factory region, and working hours, indicated that employment in an office job was associated with a 2.17-fold increase in the odds of anxiety compared to a manufacturing job (odds ratio [OR] = 2.17; 95 % confidence interval [CI], 1.24–3.80). Office jobs were also associated with a 1.94-fold increase in the odds of depression (OR = 1.94; 95 % CI, 1.34–2.82). In addition, number of hours worked was significantly associated with depression, and working hours significantly modified the effect of office job employment on the risk of depression.

Conclusions

Office job workers had higher levels of anxiety and depression than those working in manufacturing jobs. Our findings suggest that occupational physicians should consider the organizational risks faced by office job employees, and consider the differences in psychological health between office and manufacturing job workers when implementing interventions.


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The association of relational and organizational job stress factors with sleep disorder: analysis of the 3rd Korean working conditions survey (2011)
Gyuree Kim, Bokki Min, Jaeyoup Jung, Domyung Paek, Sung-il Cho
Ann Occup Environ Med 2016;28:46.   Published online September 13, 2016
DOI: https://doi.org/10.1186/s40557-016-0131-2
AbstractAbstract PDFPubReaderePub
Background

Sleep disorder is a disease that causes reduction in quality of life and work efficiency of workers. This study was performed to investigate the relationship between job-related stress factor and sleep disorder among wageworkers in Korea.

Methods

This study was based on analysis of the 3rd Korean working conditions survey. We analyzed 35,902 workers whose employment status is wageworker. We classified the job-related stress factor into 12 sections. Logistic regression was performed to estimate the relationship between job-related stress factor and sleep disorder and Odds ratio and 95 % CI were calculated using the SPSS version 23.0 program.

Results

Many categories of Job-related stress factor were correlated with sleep disorder (8 of 12 for women, 10 of 12 for men). The results of the regression analysis, corrected for general and occupational characteristics, indicated that sleep disorder was significantly correlated with the following categories of job-related stress: discrimination experience (OR 3.37, 95 % CI = 2.49 ~ 4.56 in women, OR 1.96, 95 % CI = 1.53 ~ 2.51 in men), direct customer confrontation (OR 2.72, 95 % CI = 1.91 ~ 3.86 in women, OR 1.99, 95 % CI = 1.45 ~ 2.72 in men), emotional stress (OR 2.01, 95 % CI = 1.30 ~ 3.09 in men), work dissatisfaction (detailed) (OR 1.99, 95 % CI = 1.36 ~ 2.93 in men), work dissatisfaction (overall) (OR 2.30, 95 % CI = 1.66 ~ 3.20 in women, OR 2.40, 95 % CI = 1.88 ~ 3.08 in men), expression of opinion difficulty (OR 0.66, 95 % CI = 0.48 ~ 0.92 in women, OR 0.57, 95 % CI = 0.45 ~ 0.73 in men).

Conclusion

A number of studies have reported that stress affects sleep disorder. In this study, many factors suspected to increase the risk of sleep disorder were added to previously known job stress factors. In particular, this study found a strong correlation between work-associated sleep disorder and relational and organizational job stress factors. Sleep disorder may lead to large decreases in workers’ quality of life and work efficiency. Awareness and interventions are therefore required to reduce workplace stress; additional research of this topic is also required.

Electronic supplementary material

The online version of this article (doi:10.1186/s40557-016-0131-2) contains supplementary material, which is available to authorized users.


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Reliability and validity of the workplace harassment questionnaire for Korean finance and service workers
Myeongjun Lee, Hyunjung Kim, Donghee Shin, Sangyun Lee
Ann Occup Environ Med 2016;28:45.   Published online September 9, 2016
DOI: https://doi.org/10.1186/s40557-016-0133-0
AbstractAbstract PDFPubReaderePub
Background

Harassment means systemic and repeated unethical acts. Research on workplace harassment have been conducted widely and the NAQ-R has been widely used for the researches. But this tool, however the limitations in revealing differended in sub-factors depending on the culture and in reflecting that unique characteristics of the Koren society. So, The workplace harassment questionnaire for Korean finace and service workers has been developed to assess the level of personal harassment at work. This study aims to develop a tool to assess the level of personal harassment at work and to test its validity and reliability while examining specific characteristics of workplace harassment against finance and service workers in Korea.

Methods

The framework of survey was established based on literature review, focused-group interview for the Korean finance and service workers. To verify its reliability, Cronbach’s alpha coefficient was calculated; and to verify its validity, items and factors of the tool were analyzed. The correlation matrix analysis was examined to verify the tool’s convergent validity and discriminant validity. Structural validity was verified by checking statistical significance in relation to the BDI-K.

Results

Cronbach’s alpha coefficient of this survey was 0.93, which indicates a quite high level of reliability. To verify the appropriateness of this survey tool, its construct validity was examined through factor analysis. As a result of the factor analysis, 3 factors were extracted, explaining 56.5 % of the total variance. The loading values and communalities of the 20 items were 0.85 to 0.48 and 0.71 to 0.46. The convergent validity and discriminant validity were analyzed and rate of item discriminant validity was 100 %. Finally, for the concurrent validity, We examined the relationship between the WHI-KFSW and pschosocial stress by examining the correlation with the BDI-K. The results of chi-square test and multiple logistic analysis indicated that the correlation with the BDI-K was satatisctically significant.

Conclusion

Workplace harassment in actual workplaces were investigated based on interviews, and the statistical analysis contributed to systematizing the types of actual workplace harassment. By statistical method, we developed the questionare, 20 items of 3 categories.


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    Padam P Simkhada, Edwin van Teijlingen, Manju Gurung, Samjhana Bhujel, Kalpana Gyawali, Sharada P Wasti
    Global Health Journal.2024;[Epub]     CrossRef
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    International Journal of Bullying Prevention.2023; 5(1): 88.     CrossRef
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Effects of computer familiarity and computer type on the performance of Korean computerized neurobehavioral test
Nak Joon Baek, Gun Il Park, Young Seok Byun, Man Joong Jeon, Joon Sakong
Ann Occup Environ Med 2016;28:44.   Published online September 9, 2016
DOI: https://doi.org/10.1186/s40557-016-0129-9
AbstractAbstract PDFPubReaderePub
Background

It is thought that computer familiarity has increased significantly since 2004 as well as the use of computers. This study aimed to evaluate the effects of computer familiarity and types of keyboard and computer on the performance of the Korean computerized neurobehavioral test (KCNT), and to identify which parameters of KCNT were affected by aforementioned factors.

Methods

A total of 85 subjects were classified into three groups of computer familiarity by Korean typing speed. Their age, gender and the level of education were also collected. The parameters of KCNT included simple reaction time, choice reaction time, addition, symbol digit, and finger tapping speed. The test was conducted using three types of computers: a laptop computer, a laptop computer with a simplified keyboard, and a desktop computer with a simplified keyboard.

Results

Parameters including the simple reaction time, choice reaction time, addition, and symbol digit, and the finger tapping speed of non-dominant hand showed no significant differences in the results among the three groups by computer familiarity after age and educational years were controlled as covariates. The mean reaction time of the simple reaction time and the choice reaction time with a simplified keyboard was significantly shorter compared to that with a typical keyboard. With regard to type of computer, the mean reaction time of the simple reaction time and the choice reaction time was significantly reduced when performed with the desktop computer with a simplified keyboard.

Conclusions

Unlike previous study results, the choice reaction time, the addition, and the finger tapping speed of dominant hand were the only parameters affected by the computer familiarity. Both the type of keyboard and the type of computer significantly influenced the simple reaction time and the choice reaction time. Therefore, it is recommended to use a desktop computer with a simplified keyboard for such parameters.


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  • Participation and engagement in online cognitive testing
    Daniel Radosław Sokołowski, Jasmine Pani, Tor Ivar Hansen, Asta Kristine Håberg
    Scientific Reports.2024;[Epub]     CrossRef
  • Performance assessment on the Korean Computerized Neurobehavioral Test using a mobile device and a conventional computer: an experimental study
    Young Seok Byun, Sung Kyu Park, Joon Sakong, Man Joong Jeon
    Annals of Occupational and Environmental Medicine.2018;[Epub]     CrossRef
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Association between employment status and self-rated health: Korean working conditions survey
Kimin Kwon, Jae Bum Park, Kyung-Jong Lee, Yoon-Sik Cho
Ann Occup Environ Med 2016;28:43.   Published online September 8, 2016
DOI: https://doi.org/10.1186/s40557-016-0126-z
AbstractAbstract PDFPubReaderePub
Background

This research was conducted with an aim of determining the association between employment status and self-rated health.

Methods

Using the data from the Third Korean Working Conditions Survey conducted in 2011, We included data from 34,783 respondents, excluding employers, self-employed workers, unpaid family workers, others. Self-rated health was compared according to employment status and a logistic regression analysis was performed.

Results

Among the 34,783 workers, the number of permanent and non-permanent workers was 27,564 (79.2 %) and 7,219 (20.8 %). The risk that the self-rated health of non-permanent workers was poor was 1.20 times higher when both socio-demographic factors, work environment and work hazards were corrected.

Conclusions

In this study, perceived health was found to be worse in the non-permanent workers than permanent workers. Additional research should investigate whether other factors mediate the relationship between employment status and perceived health.


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Commentary
Health care strategy for ensuring work ability in an aging Korea
Jungsun Park, Jong-tae Park, Soo Geun Kim, Cheol-In Yoo, Junseok Son, Jun Yim, Dae-seong Kim, Kyung Young Rhee, Yangho Kim
Ann Occup Environ Med 2016;28:42.   Published online September 7, 2016
DOI: https://doi.org/10.1186/s40557-016-0127-y
AbstractAbstract PDFPubReaderePub

The rapid aging trend in South Korea will cause a growing shortage of labor and decreasing quality of the labor force. The purpose of this commentary is to recommend a health care strategy to maintain and promote the work ability of employees in an aging Korea. Strategies to promote the work ability require the collaboration of governmental agencies at the central and local levels. First, the common goal should be the reinforcement of follow-up measure in general medical examinations and the promotion of healthy lifestyles for workers. Second, collaborating activities should be performed among the Worker’s Health Center, the Health Promotion Center, and community health centers. In conclusion, health care strategies for ensuring the work ability in an aging Korea require the collaboration of governmental agencies at the central and local levels.


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    Jungsun Park, Soo Geun Kim, Jong-shik Park, Boyoung Han, Kab Bae Kim, Yangho Kim
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