Annals of Occupational and Environmental Medicine

Kyoung Sook Jeong

11 Articles

The risk of insomnia by work schedule instability in Korean firefighters: Saebomi Jeong, Jeonghun Kim, Sung-Soo Oh, Hee-Tae Kang, Yeon-Soon Ahn, Kyoung Sook Jeong; Ann Occup Environ Med 2024;36:e24. Published online September 10, 2024; DOI: https://doi.org/10.35371/aoem.2024.36.e24

Abstract PDF Supplementary Material PubReader ePub: Background
Firefighters are exposed to shift work, as well as unpredictable emergency calls and traumatic events, which can lead to sleep problems. This study aimed to investigate the risk of insomnia by work schedule instability in Korean firefighters.
Methods
This study used the Insomnia Severity Index to assess the insomnia in firefighters. The work schedule stability was classified with the frequency of the substitute work and the timing of notification for work schedule changes. Logistic regression analysis was used to assess the adjusted odds ratio of insomnia by work schedule stability with covariates including sex, age, education, smoking, alcohol, caffeine intake, shift type, job, and underlying conditions.
Results
Of the 8,587 individuals, 751 (8.75%) had moderate to severe insomnia (Insomnia Severity Index ≥ 15). The prevalence of insomnia was statistically significantly higher as the frequency of substitute work increased: <1 time per month (6.8%), 1–2 times (9.5%), 3–5 times (13.4%), and more than 5 times (15.7%) (p < 0.001). Additionally, the prevalence of insomnia was statistically significantly higher when the timing of the schedule change notification was urgent or irregular: no change or several weeks before (5.4%), several days before (7.9%), one day before or on the day (11.2%), irregularly notification (11.6%) (p < 0.001). In comparison to the group with good frequency of the substitute work/good timing of schedule change notification group, the adjusted odds ratios of insomnia were 1.480 (95% confidence interval [CI]: 1.237–1.771) for Good/Bad group, 1.862 (95% CI: 1.340–2.588) for Bad/Good group, and 1.885 (95% CI: 1.366–2.602) for Bad/Bad group.
Conclusions
Work schedule instability was important risk factor of insomnia in firefighters. It suggests that improving the stability of work schedules could be a key strategy for reducing sleep problems in this occupational group.

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Statement by the Korean Society of Occupational and Environmental Medicine on the proposed reform of working hours in South Korea: Hee-Tae Kang, Chul-Ju Kim, Dong-Wook Lee, Seung-Gwon Park, Jinwoo Lee, Kanwoo Youn, Hwan-Cheol Kim, Kyoung Sook Jeong, Hansoo Song, Sung-Kyung Kim, Sang-Baek Koh; Ann Occup Environ Med 2023;35:e17. Published online July 5, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e17

Abstract PDF Supplementary Material PubReader ePub

The current 52-hour workweek in South Korea consists of 40 hours of regular work and 12 hours of overtime. Although the average working hours in South Korea is declining, it is still 199 hours longer than the Organisation for Economic Co-operation and Development average of 1,716 hours per year. In view to this, the South Korean government has now proposed to reform the workweek, mainly intending to increase the workweek to 69 hours when the workload is heavy. This reform, by increasing the labor intensity due to long working hours, goes against the global trend of reducing work hours for a safe and healthy working environment. Long working hours can lead to increased cerebrovascular and cardiovascular diseases, industrial accidents, mental health problems, and safety accidents due to lack of concentration. In conclusion, the Korean government’s working hour reform plan can have a negative impact on workers’ health, and therefore it should be thoroughly reviewed and modified.

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Association between long working hours and metabolic dysfunction–associated steatotic liver disease: a nationwide population-based study in Korea
S.-U. Baek, J.-U. Won, Y.-M. Lee, J.-H. Yoon
Public Health.2024; 232: 188. CrossRef
Association between long working hours and engagement in preventive healthcare services in Korean workers: Findings from the Korean National Health and Nutrition Examination Survey
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107849. CrossRef
Long working hours, work-life imbalance, and poor mental health: a cross-sectional mediation analysis based on the sixth Korean Working Conditions Survey, 2020–2021
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon, Jong-Uk Won
Journal of Epidemiology.2024;[Epub] CrossRef
Association between long working hours and the onset of problematic alcohol use in young workers: A population-based longitudinal analysis in South Korea
Seong-Uk Baek, Jong-Uk Won, Jin-Ha Yoon
Journal of Affective Disorders.2024; 344: 141. CrossRef
Changes in Korea’s working time policy: the need for research on flexible working hours considering socioeconomic inequality
Inah KIM
Industrial Health.2024; 62(2): 77. CrossRef
Effect of long working hours on psychological distress among young workers in different types of occupation
Seong-Uk Baek, Jin-Ha Yoon
Preventive Medicine.2024; 179: 107829. CrossRef
Association between long working hours and the development of suicidal ideation among female workers: An 8-year population-based study using the Korean Longitudinal Survey of Women & Family (2012–2020)
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Psychiatry Research.2024; 333: 115731. CrossRef
Special Series I: Working hours as a social determinant of workers’ health
Kyunghee Jung-Choi, Tae-Won Jang, Mo-Yeol Kang, Jungwon Kim, Eun-A Kim
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef
Association between long working hours and cigarette smoking, leisure-time physical activity, and risky alcohol use: Findings from the Korea National Health and Nutrition Examination Survey (2014–2021)
Seong-Uk Baek, Jin-Ha Yoon
Preventive Medicine.2023; 175: 107691. CrossRef

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Risk of insomnia symptoms according to Work-Family Conflict by workers’ characteristics: Kwanghyun Seo, Seungjun Ryu, Saebomi Jeong, Hee-Tae Kang, Sung-Kyung Kim, Sang-Baek Koh, Kyoung Sook Jeong, Sung-Soo Oh; Ann Occup Environ Med 2023;35:e36. Published online August 23, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e36

Abstract Abstract in Korean PDF PubReader ePub

Background

Work-Family Conflict means that the demands of work and family roles cannot be met simultaneously, so one cannot concentrate on one’s work or family role. This conflict can negatively affect mental health and cause insomnia symptoms.

Methods

This study was conducted on 20,442 subjects. Insomnia symptoms were assessed using the Minimal Insomnia Symptom Scale, and other variables were assessed using the questionnaire method. Logistic regression analyses were performed to evaluate the effect of Work-Family Conflict on insomnia symptoms, and subgroup logistic regression analyses were also performed.

Results

The number of people with insomnia symptoms was 4,322 (15.1%). Compared with Low Work-Family Conflict, the odds ratios (ORs) for the risk of insomnia symptoms were 1.84 (95% confidence interval: 1.56–2.16) in High work-to-family conflict, 1.16 (1.02–1.32) in High family-to-work conflict, and 3.19 (2.87–3.55) in High Work-Family Conflict. The ORs were higher for men than women in High WFC but higher for women than men in High Work-Family Conflict.

Conclusions

The risk of insomnia symptoms was highest in High Work-Family Conflict.

근로자 특성별 일-가정 갈등에 따른 불면증 증상의 발생 위험
목적
일-가정 갈등이 근로자의 불면증 증상 발생에 미치는 영향을 확인하고자 한다.
방법
이 연구는 20,442명의 피험자를 대상으로 수행되었다. 불면증 증상은 Minimal Insomnia Symptom Scale을 사용하여 평가하였고, 기타 변수는 설문지 방법을 사용하여 수집하였다. 일-가정 갈등이 불면증 증상 발생에 미치는 영향을 알아보기 위해 로지스틱 회귀 분석을 수행하였으며, 하위그룹 로지스틱 회귀 분석 또한 수행하였다.
결과
불면증이 있는 사람은 4,322명(15.1%)이었다. 전체 일-가정 갈등이 낮은 근로자와 비교했을 때, 불면증 증상 발생에 대한 오즈비는 WFC가 높은 근로자에서 1.84(95% 신뢰 구간 1.56-2.16), FWC가 높은 근로자에서 1.16(95% CI 1.02-1.32), 전체 일-가정 갈등이 높은 근로자에서 3.19(95% CI 2.87-3.55)이었다. 남성과 여성을 나누어 분석했을 때, WFC가 높은 근로자에서는 남성이 여성보다 오즈비가 높았으나 전체 일-가정 갈등이 높은 근로자에서는 여성이 남성보다 오즈비가 높았다.
결론
전체 일-가정 갈등이 높은 근로자에서 불면증 증상의 발생 위험이 가장 컸다.

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Female workers with long working hours are more likely to have depressive symptoms when having family-to-work conflict
Garin Lee, Ji-Hwan Kim, Seung-Sup Kim
International Archives of Occupational and Environmental Health.2024; 97(2): 199. CrossRef
Association between long working hours and engagement in preventive healthcare services in Korean workers: Findings from the Korean National Health and Nutrition Examination Survey
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107849. CrossRef

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Association between sleep quality and type of shift work in Korean firefighters: Hyun-Jeong Oh, Chang Sun Sim, Tae-Won Jang, Yeon Soon Ahn, Kyoung Sook Jeong; Ann Occup Environ Med 2022;34:e27. Published online October 11, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e27

Abstract Abstract in Korean PDF PubReader ePub

Background

Shift work that interferes with normal sleep patterns, is known to be a cause of sleep disturbance and has been studied through various occupational groups. However, it is not known which shift type is better for sleep health.

Methods

This study included 568 firefighters. Sleep quality was evaluated using Pittsburgh Sleep Quality Index. Sleep quality was categorized into 2 groups; good quality (≤ 5 points) and poor quality (≥ 6 points). Demographic variables, depression, anxiety, type of shift, and job were collected by self-reported questionnaires. The χ² test, t-test, and multiple logistic regression analysis were used to evaluate the effect of shift type on the sleep quality of firefighters.

Results

Three hundred thirty-seven firefighters (59.3%) have poor sleep quality. Compared to day workers, the odds ratios (ORs) of poor sleep quality were 2.169 (95% confidence interval: 1.137–4.134) in 6-day cycle, 2.161 (1.150–4.062) in 9-day cycle, 1.805 (1.087–2.997) in 21-day cycle, and 1.485 (0.718–3.069) in 3-day cycle. The ORs of poor sleep quality were 1.697(1.021–2.823) in fire suppression and 2.325 (1.213–4.455) in emergency medical service compared to administration.

Conclusions

All shift work type except for the 3-day cycle was associated with poor sleep quality compared to day work.

한국 소방관에서 수면의 질과 교대근무 유형의 연관성
목적
소방관의 수면의 질에 어떤 교대근무 유형이 적합한지 결정하는 것이다.
방법
이 연구는 568명의 소방관을 포함하여 피츠버그 수면의 질 지수를 사용하여 수면의 질을 평가하였고, 다른 교란 요인은 자기보고형태의 설문지를 통해 수집하였다. 소방관의 수면의 질에 대한 교대근무 유형의 영향을 평가하기 위하여 카이제곱 검정, t-검정, 다중 로지스틱 회귀 분석을 사용하였다.
결과
337명(59.3%)은 나쁜 수면의 질을 가졌다. 주간 근무자와 비교했을 때, 나쁜 수면의 질에 대한 오즈비는 6주기에서 2.161 (95% 신뢰구간 1.137-4.134), 9주기에서 2.161 (1.150-4.062), 21주기에서 1.805 (1.087-2.997), 3주기에서 1.485 (0.718-3.069). 직무별로는 행정에 비해 화재진압 소방관의 수면의 질이 나쁠 오즈비는 1.697 (1.021-2.823)이었고, 구급업무 소방관은 2.325 (1.213-4.455)이었다.
결론
3주기를 제외하고 다른 형태의 교대근무에서 수면의 질은 주간근무에 비해 에서 나쁜 것으로 나타났다.

Citations

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Association of age and night flight duration with sleep disorders among Chinese airline pilots
Ruizi Shi, Fang Wang, Wanying Xu, Li Fu
Frontiers in Public Health.2023;[Epub] CrossRef
Working hours and the regulations for night shift workers
Tae-Won Jang
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef

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Validation of urinary 1,2-dichloropropane concentration as a biological exposure index for workers exposed to 1,2-dichloropropane: Chung-Soo Park, Hyun-Soo Kim, Yeon-Soon Ahn, Jung-Ho Ahn, Kyoung Sook Jeong; Ann Occup Environ Med 2020;32:e24. Published online July 7, 2020; DOI: https://doi.org/10.35371/aoem.2020.32.e24

Abstract PDF PubReader ePub

Background

The International Agency for Research on Cancer classified 1,2-dichloropropane (1,2-DCP) as a human carcinogen in 2016. It is necessary to establish a health monitoring system for workers exposed to 1,2-DCP. We investigated the correlation between 1,2-DCP concentration in air and urine to determine whether it is appropriate to measure 1,2-DCP in urine as a biological exposure index (BEI).

Methods

Twenty-seven workers from 3 manufacturing industries handling 1,2-DCP participated in this study. Airborne 1,2-DCP was collected by personal air. Urine samples were collected at the end of work and analyzed using gas chromatography-mass spectrometry. Correlation analysis and simple regression analysis were performed to investigate the relationship between 1,2-DCP concentration in urine and air.

Results

Pearson correlation coefficients between total 1,2-DCP in air and urine (uncorrected, creatinine-corrected) were 0.720 and 0.819, respectively. For urine samples analyzed within 2 weeks, the Spearman's rho of 1,2-DCP concentration in urine (uncorrected and creatinine-corrected) was 0.906 and 0.836, respectively. Simple regression analysis of 1,2-DCP in air and urinary 1,2-DCP concentrations within 2 weeks, which showed the highest correlation, revealed that the coefficient of determination of 1,2-DCP concentration in urine (uncorrected and creatinine-corrected) was 0.801 and 0.784, respectively.

Conclusions

As a BEI for workers exposed to 1,2-DCP, urinary 1,2-DCP without creatinine correction better reflects the exposure levels of 1,2-DCP in air.

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Acute 1,2-Dichloropropane Poisoning due to Ingestion of Rubber Cement
Qiuyu Pang, Lexin Zheng, Ruoyu Huang, Heng Xu, Chong Pan, Zhiyong Wang, Tao Wang
American Journal of Forensic Medicine & Pathology.2023;[Epub] CrossRef
Systematic review of the human health hazards of propylene dichloride
Heather N. Lynch, Jordan S. Kozal, Melissa J. Vincent, Rachel D. Freid, Evan M. Beckett, Sarah Brown, Claire Mathis, Rita S. Schoeny, Andrew Maier
Regulatory Toxicology and Pharmacology.2023; 144: 105468. CrossRef

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Risk factors including night shift work of colorectal polyp: Kanghyun Um, Chung-soo Park, Cheolin Yoo, Yeon-Soon Ahn, Moonchan Kim, Kyoung Sook Jeong; Ann Occup Environ Med 2020;32:e26. Published online July 13, 2020; DOI: https://doi.org/10.35371/aoem.2020.32.e26

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Background

The destruction of circadian rhythms by night shift work affects major circadian genes, which are known to play a role in advancing or killing the cell cycle through tumor suppressor genes. To find out whether night shift work affects the incidence of colorectal cancer, which was found to be associated with long-term night shift work in previous studies, we surveyed effect of night shift work on colorectal polyps that have a higher incidence than colorectal cancer and can progress to colorectal cancer.

Methods

To examine the correlation between rotating night shifts and colorectal polyps, a survey was conducted with 299 men aged 40–60 years from two university hospitals. We examined lifestyle, work history, work patterns, and colonoscopy results. The differences in prevalence among the groups was compared, and prevalence ratio (PR) was calculated via generalized linear modeling.

Results

The prevalence of colorectal polyps in night shift and non-shift workers were 53.0% and 33.5%, respectively. After adjusting for age, smoking status, dietary habits, family history of colorectal cancer, obesity, job type, night shift work (PR: 1.13, 95% CI: 1.02–1.25) was a risk factor of colorectal polyps.

Conclusions

The risk of colorectal polyps was greater in night shift workers than non-shift workers. Also risk of colorectal polyp was higher in older group. Our study investigated colorectal polyp instead of colorectal cancer and lacks information about types and gene mutations of colorectal polyps. Further study is needed to clarify effect of night shift work on development of colorectal cancer.

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Spatial clustering of colorectal cancer in Malaysia
Sharifah Saffinas Syed Soffian, Azmawati Mohammed Nawi, Rozita Hod, Khairul Nizam Abdul Maulud, Ahmad Tarmizi Mohd Azmi, Mohd Hazrin Hasim Hashim, Huan-Keat Chan, Muhammad Radzi Abu Hassan
Geospatial Health.2023;[Epub] CrossRef
Circadian regulation of digestive and metabolic tissues
Zainab Taleb, Phillip Karpowicz
American Journal of Physiology-Cell Physiology.2022; 323(2): C306. CrossRef
Do sleep quality and psychological factors link precancerous conditions of colorectal cancer? A retrospective case-control study
Wei Liu, Huijie Zhang
Expert Review of Gastroenterology & Hepatology.2022; 16(2): 173. CrossRef
Prevalence of Colorectal Polyps Based on Cardiorespiratory Fitness, Muscle Strength, Health Behavior, and Abdominal Obesity in Asymptomatic Elderly
Shiyu Zhang, Junyong Zhang, Yonghwan Kim, Wangyang Zhang
Healthcare.2021; 9(10): 1400. CrossRef
The Circadian Clock Gene, Bmal1, Regulates Intestinal Stem Cell Signaling and Represses Tumor Initiation
Kyle Stokes, Malika Nunes, Chantelle Trombley, Danilo E.F. L. Flôres, Gang Wu, Zainab Taleb, Abedalrhman Alkhateeb, Suhrid Banskota, Chris Harris, Oliver P. Love, Waliul I. Khan, Luis Rueda, John B. Hogenesch, Phillip Karpowicz
Cellular and Molecular Gastroenterology and Hepatology.2021; 12(5): 1847. CrossRef

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The characteristics of asbestos-related disease claims made to the Korea Workers’ Compensation and Welfare Service (KCOMWEL) from 2011 to 2015: Yon Soo An, Hyung Doo Kim, Hyeoung Cheol Kim, Kyoung Sook Jeong, Yeon Soon Ahn; Ann Occup Environ Med 2018;30:45. Published online July 11, 2018; DOI: https://doi.org/10.1186/s40557-018-0256-6

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Background

This study aimed to enhance understanding of the epidemiologic characteristics of asbestos-related diseases, and to provide information that could inform policy-making aimed at prevention and compensation for occupational asbestos exposure, through analyzing asbestos-related occupational disease claims to Korea Workers’ Compensation and Welfare Service from 2011 to 2015.

Methods

We analyzed 113 workers who filed medical care claims or survivor benefits for asbestos exposure and occupational-related disease from 2011 to 2015. Among these claims, we selected approved workers’ compensation claims relating to malignant mesothelioma and lung cancer, and analyzed the general characteristics, exposure characteristics, pathological characteristics, and occupation and industry distribution.

Results

Malignant mesothelioma and lung cancer occurred predominantly in males at 89.7 and 94%, respectively. The mean age at the time of diagnosis for malignant mesothelioma and lung cancer was 59.5 and 59.7 years, respectively, while the latency period for malignant mesothelioma and lung cancer was 34.1 and 33.1 years, respectively. The companies involving exposed workers were most commonly situated within the Busan-Ulsan-Gyeongnam region. Histology results for lung cancer indicated adenocarcinoma as the most common form, accounting for approximately one half of all claims, followed by squamous cell carcinoma, and small cell lung cancer. The most common occupation type was construction in respect of malignant mesothelioma, and shipbuilding in respect of lung cancer.

Conclusions

Considering the long latency period of asbestos and that the peak period of asbestos use in Korea was throughout the mid-1990s, damage due to asbestos-related diseases is expected to show a continued long-term increase. Few studies providing an epidemiologic analysis of asbestos-related diseases are available; therefore, this study may provide baseline data to assist in predicting and preparing for future harm due to asbestos exposure.

Trial registration

DUIH 2018–02–004-001. Registered 28 Februrary 2018.

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William Dodge Stevens, Teamwork Builds Ships, 1918
Paul J Nicholson
Occupational Medicine.2024; 74(4): 260. CrossRef
Explaining the Invisibility of Asbestos-Related Diseases in the Taiwan Workers’ Compensation System
Yawen Cheng, Yi-Ling Huang, Lukas Jyuhn-Hsiarn Lee
NEW SOLUTIONS: A Journal of Environmental and Occupational Health Policy.2022; 32(2): 106. CrossRef
Standardized Incidence Ratio and Standardized Mortality Ratio of Malignant Mesothelioma in a Worker Cohort Using Employment Insurance Database in Korea
Eun-A Kim
International Journal of Environmental Research and Public Health.2021; 18(20): 10682. CrossRef
Survival of Korean Patients with Malignant Pleural Mesothelioma Compensated for the Asbestos Injury Relief
Min-Sung Kang, Sung-Soo Lee, Soon-Chan Kwon, Da-An Huh, Yong-Jin Lee
Applied Sciences.2021; 11(20): 9713. CrossRef
The Epidemiologic Characteristics of Malignant Mesothelioma Cases in Korea: Findings of the Asbestos Injury Relief System from 2011–2015
Soon-Chan Kwon, Sung-Soo Lee, Min-Sung Kang, Da-An Huh, Yong-Jin Lee
International Journal of Environmental Research and Public Health.2021; 18(19): 10007. CrossRef
Malignant mesothelioma in construction workers: the Apulia regional mesothelioma register, Southern Italy
L. Vimercati, D. Cavone, A. Caputi, M. C. Delfino, L. De Maria, G. M. Ferri, G. Serio
BMC Research Notes.2019;[Epub] CrossRef

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Psychometric properties of the 10-item Conner-Davidson resilience scale on toxic chemical-exposed workers in South Korea: Gab-Sik Shin, Kyeong-Sook Choi, Kyoung Sook Jeong, Young-Sun Min, Yeon-Soon Ahn, Min-Gi Kim; Ann Occup Environ Med 2018;30:52. Published online August 13, 2018; DOI: https://doi.org/10.1186/s40557-018-0265-5

Abstract PDF PubReader ePub

Background

Resilient individuals have a comprehensive ability to adapt to various life circumstances. Psychological resilience predicts an individual’s physiological response to stress. The 10-item Connor-Davidson Resilience Scale (CD-RISC) is a widely used measure to quantify the level of self-perceived resilience. This study examined the psychometric properties of a Korean version of the 10-item Connor-Davidson Resilience Scale (10-item K-CD-RISC) on workers in Gumi, South Korea, exposed to hydrofluoric acid (HF).

Methods

The questionnaires included the 10-item K-CD-RISC and Beck Anxiety Inventor (BAI), the Impact of Event Scale-Revised-Korean version (IES-R-K), the Rosen-berg Self Esteem Scale (RSES), the Center for Epidemiologic Studies-Depression Scale (CES-D), and the Perceived Stress Scale (PSS). These were randomly distributed at 237 workplaces near the HF-spill site, in the Gumi 4 complex. The responses of 991 (67.3%) workers were analyzed.

Results

The exploratory factor analysis shown that a single-factor model was consistent with the original design of the 10-item CD-RISC. The scale also demonstrated good internal consistency (Cronbach’s alpha = 0.95). Scores on the scale reflected different levels of resilience with respect to personal factors (age, gender, marital status, and education and income levels) that are thought to be differentiated. Differences of resilience were also reflected by psychiatric symptoms (anxiety and depression). Moreover, the total score of scale positively correlated with RSES, whereas the IES-R-K, BAI, CES-D, and the PSS negatively correlated with the 10-item K-CD-RISC.

Conclusions

The 10-item K-CD-RISC has good psychometric properties and is applicable for victims exposed to noxious chemical such as HF.

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Psychological resilience and suicidality in the general population: A cross-sectional study based on data from the National Mental Health Survey of Korea 2021
Seung-Hoon Lee, Junhyung Kim, Changsu Han
Journal of Affective Disorders.2024; 363: 15. CrossRef
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Haleema Siddique, Robert Munashe Maweni, Micol Lupi, Shannan Woods, Shahram Shirazi, Robert William Foley, Debra Machando
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Yuhan Wang, Jie Huang, Hanhan Zheng, Li Tao, Kaiqi Gu, Caihong Xie, Lijun Cha, Hong Chen, Hua Hu
Journal of Affective Disorders.2024; 352: 509. CrossRef
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Farideh Shojaeerad, mohsen kachooei, Kimiya Zarei
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Hamid Sharif-Nia, David Sánchez-Teruel, Erika Sivarajan Froelicher, Sima Hejazi, Lida Hosseini, Fatemeh Khoshnavay Fomani, Mozhgan Moshtagh, Fereshteh Mollaei, Amir Hossein Goudarzian, Amir Babaei
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Tina Kavčič, Gaja Zager Kocjan, Petra Dolenc
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Wei Chen, Yuxin Liang, Tao Yang, Rongfen Gao, Guyin Zhang
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Comparison of facet joint degeneration in firefighters and hospital office workers: Dong Hyun Kim, Yon Soo An, Hyung Doo Kim, Kyoung Sook Jeong, Yeon-Soon Ahn, Kun-Hyung Kim, Youngki Kim, Han-Soo Song, Chul-Gab Lee, Young-Jun Kwon, Jin-Ha Yoon; Ann Occup Environ Med 2017;29:24. Published online June 24, 2017; DOI: https://doi.org/10.1186/s40557-017-0180-1

Abstract PDF PubReader ePub

Background

There are few published studies on the relationship between occupational lumbar load and facet joint degeneration (FJD). This cross-sectional study was conducted to evaluate the effect of physical lumbar load on FJD by comparing magnetic resonance imaging (MRI) findings of firefighters (FFs) and hospital office workers (HOWs).

Methods

We randomly sampled 341 male FFs and 80 male HOWs by age stratification. A questionnaire and clinical examination, including MRI of the lumbar spine (T12-S1), were conducted. FJD was diagnosed and graded by using the classification of Pathria et al., and reclassified into two groups as follows: no FJD (grade 0) and FJD (grades 1, 2, and 3). The prevalence of FJD was analyzed according to occupational group.

Results

The prevalence of FJD ranged from 31% (L1–L2) to 75% (L4–L5) in the FFs, and from 18% (L1–L2) to 69% (L4–L5) in the HOWs. After adjustment for age, body mass index, and frequency of physical exercise, the adjusted odds ratios (OR) for FJD in the FFs were significantly higher than those in the HOWs at all lumbar spinal levels, except for L3–L4 (L1–L2: OR, 2.644; 95% confidence interval [CI], 1.317–5.310; L2–L3: OR, 2.285; 95% CI, 1.304–4.006; L4–L5: OR, 1.918; 95% CI, 1.037–3.544; L5–S1: OR, 1.811; 95% CI, 1.031–3.181).

Conclusion

This study shows that FFs exhibit a greater likelihood of having FJD than HOWs after controlling for other risk factors of FJD. This suggests that the physical occupational demands of FFs affect their risk of developing FJD.

Citations

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Jeong Ah Kim, Soo Yeon Song, Wonjeong Jeong, Jae Kwan Jun
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Emergency Medicine Australasia.2022; 34(5): 833. CrossRef
An overview of compensated work-related injuries among Korean firefighters from 2010 to 2015
Hyung Doo Kim, Yon Soo An, Dong Hyun Kim, Kyung Sook Jeong, Yeon Soon Ahn
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef

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Comparison of the Standard Threshold Shift Criteria for Evaluating Hearing Conservation Programs: Chang Sun Sim, Kyoung Sook Jeong, Yu Jung Kim, Na Ri Choy, Choong Ryeol Lee, Hun Lee, Jong Pil Jung, Ok Hyun Kim, Yo Weon Lee, Seung Rim Yang, Sung Soo Oh, Ji Ho Lee; Korean Journal of Occupational and Environmental Medicine 2006;18(3):179-188. Published online September 30, 2006; DOI: https://doi.org/10.35371/kjoem.2006.18.3.179

Abstract PDF: OBJECTIVES
Workers from a factory was selected to compare 8 standard threshold shift criteria with the Korean diagnostic criteria of noise-induced hearing loss for this cohort study.
METHODS
From 1990 to 1999, 491 workers at a manufacturing company with complete record of the hearing test covering the range of 0.5~6 kHz for 10 consecutive years were finally selected. Eight standard threshold shift criteria (15 dB once, NIOSH (1972), 10 dB average 3~4 kHz, OSHA STS, AAOHNS, 15 dB twice, 15 dB 1~4 kHz, OSHA STS twice) along with the Korean standard for diagnosing the noise-induced hearing loss (the average hearing threshold at 0.5, 1 and 2 kHz) were compared to calculate the degree of the threshold shift and the minimum time required to detect the change.
RESULTS
Those workers showing at least one positive shift in the 'once'criteria of NIOSH (1972) were 92.5%; the 'average'criteria of 10 dB average 3~4 kHz were 35.8%; 'twice'criteria of 15 dB twice were 44.4%. The duration from the baseline to the year showing the first positive shift was from 3.2 +/- 3.1 years (NIOSH, 1972) to 6.0 +/- 2.1 years (OSHA STS twice). The percentage of true positive shift ranging from 20.4% (AAO-HNS) to 69.8% (NIOSH, 1972). There were 10 (2%) which met the Korean diagnostic criteria of noise-induced hearing loss.
CONCLUSIONS
Currently the concept of hearing threshold shift in diagnosing the hearing loss was adopted in Korea thus in this study we determined the validity and the effect of the various hearing threshold shift criteria and showed that NIOSH (1972) criteria was the best of all. In the future, hearing data from various manufacturing workers should be compared to thoroughly evaluate the threshold shift criteria and to establish adequate standard for Korean workers.

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A Case of Acute Organotin Poisoning: Yu Jung Kim, Yangho Kim, Kyoung Sook Jeong, Chang Sun Sim, Nari Choy, Jongchul Kim, Jun Bum Eum, Yoshiaki Nakajima, Yoko Endo, Cheol In Yoo; Korean Journal of Occupational and Environmental Medicine 2006;18(3):255-262. Published online September 30, 2006; DOI: https://doi.org/10.35371/kjoem.2006.18.3.255

Abstract PDF

BACKGROUND
Although organotin compounds are widely used as PVC stabilizers, catalysts and biocides, their effects on humans are not well known. However, their acute intoxication is known to cause neurotoxicity in the central nervous system, renal toxicity, and hepatotoxicity. As there has been no previously published case of organotin intoxication in Korea, we report here the first Korean case of acute exposure to organotin.
CASE
REPORT: A 43-year-old male with disorientation and behavioral change was admitted to a hospital. He had been working as a tank cleaner for several different companies in the previous 8 years and a week before admission, he had cleaned a tank containing dimethyltin (DMT) for 4 days. A day after finishing the job, he suffered decreased memory, behavioral change and progressive mental deterioration when he arrived at the emergency room. The result of spinal tapping was negative but on the 4th day of admission he deteriorated into a state of coma along with metabolic acidosis and severe hypokalemia. High levels of DMT and trimethyltin (TMT) were detected in a highly sensitive urine analysis. After conservative treatment and chelation therapy, the patient showed some clinical improvement but the neurological defects persisted.
CONCLUSION
The patient appeared to have been intoxicated from the acute exposure to a high level of organotin while cleaning the tank.

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Acute Occupational Poisoning in Korea
Hyunjoo Kim, Jia Ryu
The Ewha Medical Journal.2016; 39(4): 99. CrossRef
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Yangho Kim, Kyoung Sook Jeong, Yong-Hun Yun, Myoung-Soon Oh
Journal of Clinical Neurology.2010; 6(2): 64. CrossRef

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