Annals of Occupational and Environmental Medicine

Sang Yun Lee

7 Articles

A Case of Silicosis and Pneumothorax in a Workplace Producing Dental Porcerlain: Youngjoong Kang, Won Jun Choi, Sang Yun Lee, Jong Wan Yun, Hyung Sik Kim, Jong Uk Won, Sang Hwan Han; Korean Journal of Occupational and Environmental Medicine 2010;22(1):58-63. Published online March 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.1.58

Abstract PDF: BACKGROUND
Silicosis is more likely to occur in people working in the mining industry. However, workers suffering from silicosis have recently been reported frequently in other areas. We present a case of silicosis occuring in a 43-year-old man who had worked for 20 years in a workplace producing dental porcelain.
CASE
The man was admitted to the emergency room with acute chest pain caused by pneumothorax. Chest X-ray indicated numerous small opacities spread over the whole lung field and a large opacity in the right middle lung field. According to ILO classification, the shape of the small opacities was t/s, the profusion rate was 2/3 and the large opacity was classified into the B category. Following this diagnosis of silicosis, the patient's medical history and work exposure history were examined. According to his medical history, he had undergone closed thoracostomy in 2006 because he had suffered pneumothorax twice (in 2005 and 2006) and his smoking history was 7 pack years. In particular, he had been exposed to silica dust for 20 years in his workplace.
CONCLUSION
Despite the absence of any specific risk factor that caused pneumothorax, the patient suffered this condition three times. All clinical results and the progress of his physical symptoms, including radiologic findings from chest X-ray and computed tomography, clearly supported the diagnosis of silicosis. Except for exposure to silica dust in the workplace, no other risk factors causing silicosis were found. Therefore, he was finally diagnosed as having silicosis caused by exposure to silica dust in the workplace and followed by pneumothorax.

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Human Factors Involved in Traffic Accidents and Unsafe Driving Behaviors of Taxi Drivers: Kan woo Youn, Sang yun Lee, Sang hyuk Yim; Korean Journal of Occupational and Environmental Medicine 2006;18(4):307-317. Published online December 31, 2006; DOI: https://doi.org/10.35371/kjoem.2006.18.4.307

OBJECTIVE: This study investigated the driving habits of taxi drivers, in order to examine the characteristics of human factors causing traffic accidents and unsafe driving behavior and to determine any relevancy among them.
METHOD
Taxi drivers (N=335) answered a questionnaire investigating various measures of human factors, unsafe driving behaviors, and number of traffic accident experiences in the previous year. In factor analysis, the characteristics of human factors were classified into 5 common factors: job, mental health, age, health habit and sleep factor. A contextual mediated model was proposed to distinguish the distal (5 common factors) and proximal (unsafe driving behaviors) factors in predicting traffic accident involvement by hierarchical multiple regression.
RESULT
In hierarchical multiple regression, job factor(beta: 0.122), sleep factor (beta: 0.114) and unsafe driving behaviors (beta: 0.018) yielded a direct effect on the rate of traffic accidents. Mental health factor beta: 6.429), job factor (beta: 1.319) and health habit factor(beta: 1.177) yielded a indirect effect on the rate of traffic accidents by unsafe driving behaviors.
CONCLUSION
Various human factors co-related by the unique characteristics that exist in the taxi service industry have significant effects on the rate of traffic accidents mediated by unsafe driving behaviors. Therefore a proper countermeasure against these factors should be established in order to effectively reduce the rate of taxi accidents.

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The epidemiology of road traffic accidents and associated factors among drivers in Dilla Town, Southern Ethiopia
Habtamu Endashaw Hareru, Belay Negassa, Reta Kassa Abebe, Eden Ashenafi, Getachew Assefa Zenebe, Berhanu Gidisa Debela, Zemachu Ashuro, Negasa Eshete Soboksa
Frontiers in Public Health.2022;[Epub] CrossRef
The effect of long working hours on cerebrovascular and cardiovascular disease; A case‐crossover study
Kyong‐sok Shin, Yun kyung Chung, Young‐Jun Kwon, Jun‐Seok Son, Se‐hoon Lee
American Journal of Industrial Medicine.2017; 60(9): 753. CrossRef
Correlations among occupational stress, fatigue, and depression in call center employees in Seoul
Yun Kyung Kim, Nam Hyun Cha
Journal of Physical Therapy Science.2015; 27(10): 3191. CrossRef
The Relationship among bus Driver's Personality Traits, Safety Job Performance and Traffic Accidents
Woohyun Ahn, Sunhee Lee, Sunyoung Park
Journal of the Korean Society of Safety.2014; 29(2): 68. CrossRef
A Study on Level of Safety Awareness and Disaster Prevention Measures According to Driver's Characteristic
Man-Soo Lee
Journal of the Korea Safety Management and Science.2013; 15(4): 131. CrossRef

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Multilevel Analysis of Risk Factors Related to Musculoskeletal Symptoms among Caterers for Elementary School Lunch Services: Kyung Hee Jung-Choi, Sang Yun Lee, Myung Ki, Kee Hong Cho, Hee Tae Kang, Young Jun Kwon, Hyun Joo Kim, Myoung Hee Kim, Kyoung Bok Min, Hye Sook Park, Jeong Youn Kim, Eun Hee Ha, Do Myung Paek; Korean Journal of Occupational and Environmental Medicine 2004;16(4):436-449. Published online December 31, 2004; DOI: https://doi.org/10.35371/kjoem.2004.16.4.436

Abstract PDF

OBJECTIVES
To examine the complaint proportion and characteristics of musculoskeletal symptoms and to find risk factors of musculoskeletal symptoms among caterers for school lunch services.
METHODS
The study subjects were 385 caterers who were working for school lunch services in 71 elementary schools and 114 housewives who had visited a hospital for routine health check-up. A self-recording questionnaire was used to investigate the general characteristics, labor conditions, job stress and nature of musculoskeletal symptom. Caterers were surveyed from September to October in 2003 and the housewives during September by post. The ergonomic risk factors were examined for the caterers of an elementary school in Kyonggi Province in November, 2003.
RESULTS
The complaint proportion of self-reported positive musculoskeletal symptoms was 52.0% and that of severe musculoskeletal symptoms was 24.9%. Ergonomic assessment revealed that washing the dishes, carrying the soup containers and cleaning the sewage drain were highly risky activities in terms of repetitive and heavy weight-bearing motions. As for personal factors, the caterers having severe musculoskeletal symptoms had high psychological job demand. As for the workplace factors, the proportion of schools having severe musculoskeletal symptoms was significant higher where each caterer prepared more than 150 lunches. Among schools without school lunchroom, more schools had caterers having severe musculoskeletal symptoms. Using multilevel analysis, we found that the number of lunches to be prepared per caterer was a significant risk factor of severe musculoskeletal symptoms (O.R. 4.67).
CONCLUSIONS
This study showed that the number of lunches prepared per caterer has a significant influence on the development of musculoskeletal disorder and that caterers work in an ergonomically highly risky job environment. The study results suggest that the number of caterers be increased to decrease the number of lunches prepared per caterer and the ergonomic environment be improved.

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Evaluation of the prevalence of musculoskeletal symptoms, presumptive diagnosis, medical care use, and sick leave among female school meal service workers
Young Hoon Moon, Young Joon Yang, Sang Yoon Do, Jae Yoon Kim, Chul Gab Lee, Hong Jae Chae, Soo Hyeon Kim, Han Soo Song
Annals of Occupational and Environmental Medicine.2019;[Epub] CrossRef
Job Stress and Musculoskeletal Disorder in Seoul City's School Foodservice Employees
Saerom Lee, KyooSang Kim, Eun-A Kim, Jihye Kim, Dohyung Kim
Korean Journal of Occupational Health Nursing.2014; 23(4): 245. CrossRef
Safety Accidents and Physical Fatigue of School Foodservice Employees
Yeon-Jung Cho, Hyun-Ah Kim
Journal of the Korean Society of Food Science and Nutrition.2013; 42(9): 1482. CrossRef
Musculoskeletal Workload Evaluation in Physical Therapist
Youn-Bum Sung, Hyung-Seok Seo, Jung-Ho Lee, Young-Han Park
Journal of the Korea Academia-Industrial cooperation Society.2012; 13(9): 3999. CrossRef
Risk Factor Evaluation of Musculoskeletal Symptoms for Guards
Kyung-Sun Lee, In-Seok Lee, Hyun-Joo Kim, KyungHee Jung-Choi, Jin-Wook Bahk, Myung-Chul Jung
Journal of the Ergonomics Society of Korea.2011; 30(3): 419. CrossRef
Impact of Health Insurance Type on the Quality of Hemodialysis Services: A Multilevel Analysis
Jin-Hee Jung, Soon-Man Kwon, Kyoung-Hoon Kim, Seon-Kyoung Lee, Dong-Sook Kim
Journal of Preventive Medicine and Public Health.2010; 43(3): 245. CrossRef

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The Effects of Job Stress on the Autonomic Nerve Activity of Workers in Manufacturing Industry: Ki Jung Yoon, Mi Na Ha, Jai Young Kim, Sang Yun Lee, Hyoung June Im, Ae Sun Shin, Seung Sik Hwang, Jeong Soo Kim, Dae Hee Kang, Soo Hun Cho; Korean Journal of Occupational and Environmental Medicine 2002;14(3):280-287. Published online September 30, 2002; DOI: https://doi.org/10.35371/kjoem.2002.14.3.280

Abstract PDF: OBJECTIVE: A cross-sectional study was conducted to evaluate the relationships between autonomic nerve activity (i.e., heart rate variability and urinary catecholamines) and job stress.
METHODS
The study was conducted on 134 workers from a company producing consumer goods (i.e., diaper, paper towel) located in Cheonan, Korea. Job stress was assessed by Karasek's Job Content Questionnaire (JCQ). Autonomic function was assessed by heart rate variability (HRV) and urinary catecholamines (epinephrine, norepinephrine, and dopamine). Urine samplings, and measurings of HRV, were repeated three times for each shift. Information on demographic characteristics, previous job histories, past medical history, smoking and drinking were also collected.
RESULTS
No statistically significant differences were observed in any HRV and urinary catecholamines among the four groups, which were categorized by the Job Strain Model. When data were stratified by work duration, low field HRV was borderline significantly higher in the high strain group in individuals with a shorter work duration (<48.5 months, N=28, p-value of 0.92 by analysis of variance).
CONCLUSIONS
Neither HRV nor urinary catecholamines are significantly associated with job stress, as assessed by the Karasek's JCQ. However, HRV seems to be a potential physiological indicator of job stress only in the workers with a shorter work duration.

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The Association of Workplace Cumulative Noise Exposure and Blood Pressure: Sang Yun Lee, Jai Young Kim, Hyoung June Im, Ki Jung Yoon, Hong Ryul Choi, Sang Baek Koh, Dae Hee Kang, Soo Hun Cho; Korean Journal of Occupational and Environmental Medicine 2001;13(2):200-208. Published online June 30, 2001; DOI: https://doi.org/10.35371/kjoem.2001.13.2.200

Abstract PDF

OBJECTIVES
The association of workplace cumulative noise exposure and blood pressure was investigated in this study using cross-sectional design.
METHODS
The study population comprised 852 manufacturing male workers of whom occupational health examination data, questionnaire and personnel records were available. Workplace ambient noise monitoring data was used for calculating individual cumulative noise exposure level. Mean of each systolic and diastolic blood pressure of occupational health examination data was used for individual systolic and diastolic blood pressure level. Possible confounding variables including family history of hypertension, smoking habit, alcohol drinking habit were collected by questionnaire. On the basis of job location and duration of work at the location, a cumulative time-weighted average noise level was calculated for each workers. According to this cumulative noise exposure level, each study subject was categorized as low noise exposure group, moderate noise exposure group, high noise exposure group, very high noise exposure group. Among noise exposure groups, mean of systolic and diastolic blood pressure was compared after adjusting possible confounding variables such as age, body mass index, serum cholesterol level, family history of hypertension, smoking history, alcohol drinking habit.
RESULTS
After adjusting possible confounding variables, noise exposure group was significant explanatory variables for both systolic and diastolic blood pressure, and mean of both systolic and diastolic blood pressure of very high exposure group was higher than that of low exposure group.
CONCLUSIONS
These findings suggested that the high cumulative noise exposure might elevate the blood pressure.

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Impact of Indoor Green in Rest Space on Fatigue Recovery Among Manufacturing Workers
ChoHye Youn, LeeBom Chung, Minji Kang, Juyoung Lee
Journal of Environmental Science International.2024; 33(3): 217. CrossRef
The relationship between occupational noise exposure and hypertension using nearest age-matching method in South Korea male workers
Min Gi Kim, Yeon-Soon Ahn, Zhongmin Jin
Cogent Engineering.2021;[Epub] CrossRef
Cohort study for the effect of chronic noise exposure on blood pressure among male workers in Busan, Korea
Ji Ho Lee, Weechang Kang, Seung Rim Yaang, Nari Choy, Choong Ryeol Lee
American Journal of Industrial Medicine.2009; 52(6): 509. CrossRef

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The Health Status Assessment of Subcontracted Workers: Hong Ryul Choi, Sang Baek Koh, Sei Jin Chang, Bong Suk Cha, Hyoung June Im, Sang Yun Lee, Jai Young Kim, Dong Mug Kang, Soo Hun Cho; Korean Journal of Occupational and Environmental Medicine 2001;13(1):18-30. Published online March 31, 2001; DOI: https://doi.org/10.35371/kjoem.2001.13.1.18

Abstract PDF

OBJECTIVES
The strategy for the labor flexibility through subcontracted labor have brought a negative effect on the lives of the workers, such as the increase of the unstable employment. This study was conducted to analyze the relationship between the employment of subcontracted firms and the health status of them, and to find out some problems which have been caused in the process of health evaluation and the characteristics of social exclusion.
METHODS
We reviewed the periodical health examination and preemployment health examination in order to compare health status of the subcontracted workers with those of the parent firm workers. The SF-36 questionnaire was administered to assess the self-perceived health status.
RESULTS
The result shows that compared to the working duration of the parent firm workers, those of the subcontracted workers were shorter, and the job transfer rate was higher. In the periodical health examination, the prevalence of occupational and general disease was higher in the parent firm(10%) than in the subcontracted firms(6%). Preemployment health examination plays an important role in worker's health management. Among 6,260 workers who received preemployment health examination, the prevalence of disease was 37.9%. Mean scores of health status measured by SF-36 were lower in the subcontracted firm than in the parent firm.
CONCLUSIONS
Due to social exclusion of the subcontracted workers from the periodical health examination, there is a possibility that the periodical health examination have the healthy worker effect. These results suggests that the preemployment health examination could be a more appropriate indicator which is able to assess the health status of the subcontracted workers than the periodical health examination.

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Workplace Violence in Workers with Multi-Party Employment Arrangements: Results from the Korean National Representative Survey
Yeogyeong Yoon, Kyunghee Jung-Choi
Safety and Health at Work.2022; 13(1): 93. CrossRef
Participation inequality in the National General Health Examination based on enterprise size
Young Joong Kang, Jong Heun Park, Huisu Eom, Bohwa Choi, Seyoung Lee, Ji-Won Lee, Jun-Pyo Myong
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef
Subcontractors and increased risk for work‐related diseases and absenteeism
Kyoung B. Min, Shin G. Park, Jae S. Song, Kwan H. Yi, Tae W. Jang, Jin Y. Min
American Journal of Industrial Medicine.2013; 56(11): 1296. CrossRef
Factors Associated with Cancer Screening Rates of Manufacturing Workers
Su Ho Park, Chang Hee Kim, Eun Kyung Kim
Korean Journal of Occupational Health Nursing.2013; 22(3): 179. CrossRef

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A case-crossover study between air pollution and hospital emergency room visits by asthma attack: Hyoung June Im, Sang Yun Lee, Ki Jung Yun, Young Su Ju, Dae Hee Kang, Soo Hon Cho; Korean Journal of Occupational and Environmental Medicine 2000;12(2):249-257. Published online June 30, 2000; DOI: https://doi.org/10.35371/kjoem.2000.12.2.249

Abstract PDF

OBJECTIVES
This study, using case-crossover design, search a relationship between changing levels of air pollutants and asthma attack in asthma patients.
METHODS
We searched the daily total number of asthmatic patients at hospital' s emergency room in Seoul, Korea by investigating total 49 general hospitals emergency room records. Otherwise, We investigated medical records of asthmatic patients at one of the 49 hospitals we have searched. We investigated addresses that they are living, diagnosis, smoking history, whether respiratory infection or not, medications. We analyzed the data by 1:m conditional logistic regression used when matched case-control study is analyzed. Control periods were chosen by bidirectional paired matching technique 7, 14 days before and after case periods.
RESULTS
the relative risk of asthmatic attack by 100 ppm ozone increase between June and September were 1.348(95 % CI = 1.010~1.619). Between November and February, the relative risk by 100 /m TSP increase, 100ppb sulfur dioxide and nitrogen dioxide were respectively 1.278(1.010~1.619), 1.237(1.019~1.502), 1.285(1.006~1.640). In stratified analysis, the relative risk were significant when the asthmatic patients were children aged 15 years or below, when there were respiratory infection, and when the patients took medications irregularly CONCLUSIONS: There was statistically significant association between ambient levels of air pollutants and asthmatic attack. So, we have to exert our efforts to minimize the air pollution effectively, to protect public health from air pollution.

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Review of Epidemiological Research and Perspectives for Future Environmental Health Progress in Korea
Kyoung-Mu Lee, Moon-Young Park
Journal of Environmental Health Sciences.2022; 48(3): 138. CrossRef
Hybrid Deep Learning Algorithm with Open Innovation Perspective: A Prediction Model of Asthmatic Occurrence
Min-Seung Kim, Jeong-Hee Lee, Yong-Ju Jang, Chan-Ho Lee, Ji-Hye Choi, Tae-Eung Sung
Sustainability.2020; 12(15): 6143. CrossRef
Effect of outdoor air pollution on asthma exacerbations in children and adults: Systematic review and multilevel meta-analysis
Pablo Orellano, Nancy Quaranta, Julieta Reynoso, Brenda Balbi, Julia Vasquez, Qinghua Sun
PLOS ONE.2017; 12(3): e0174050. CrossRef

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