Annals of Occupational and Environmental Medicine

Jae Wook Choi

16 Articles

PTSD and Related Factors among Dispatched Firefighters to Rescue Sites after the Great Japanese Earthquake (Running head: Dispatched Firefighters' PTSD): Mihyun Yang, Eunil Lee, Jae Wook Choi, Hae Joon Kim; Korean Journal of Occupational and Environmental Medicine 2012;24(2):167-179. Published online June 30, 2012; DOI: https://doi.org/10.35371/kjoem.2012.24.2.167

OBJECTIVES
This study aims to investigate the risk of posttraumatic stress disorder (PTSD) and its related factors among firefighters dispatched to the rescue sites after the Great Japanese Earthquake in 2011.
METHODS
Among 104 male firefighters dispatched to rescue sites after the Great Japanese Earthquake, 73 firefighters were assessed. The 73 firefighters completed questionnaires, which include general characteristics, an impact of event scale-revised Korean version (IES-R-K), a coping checklist, a scale of perceived social support, and a post-traumatic stress diagnostic scale (PDS). The data was analyzed to find factors related to PTSD risk.
RESULTS
The mean value of age and work tenure in this study were 38.6 years (SD=5.7) and 11.6 years (SD=6.0), respectively. The number and rate of the PTSD high-risk group in dispatched firefighters in this study was 7 cases and 9.6% using IES-R-K, with an over 25-point cutoff score. The mean rank of tenure, 53.5 in the PTSD high-risk group (n=7), was significantly higher than that of 32.2 in the PTSD low-risk group (n=66). The mean rank of assessable support, 20.2 in the PTSD high-risk group was significantly lower than that of 38.7 in the PTSD low-risk group. In logistic analysis of model 1 including PDS in independent variables, were associated with being a PTSD high-risk group as in the following: higher PDS score (OR 2.18, 95% CI: 1.07~4.46), longer tenure (OR 3.42, 95% CI: 1.01~11.89), more using coping method (OR 1.35, 95% CI: 1.00~1.81), and lower perceptions of social support (OR 0.84, 95% CI: 0.72~0.97). In logistic analysis of model 2 without PDS in independent variables, more using coping method (OR 1.14, 95% CI: 1.01~1.28) and lower perceptions of social support (OR 0.95, 95% CI: 0.91~0.98) were associated with being a PTSD high-risk group.
CONCLUSION
The PTSD high-risk group in dispatched firefighters indicated that their odds ratios were increased when they used more coping methods under specific stress conditions and had lower perceptions of social support. Therefore, for those, who might be dispatched to overseas, the psychological support approach should be considered to produce effective coping methods against traumatic events and to be aware of abundant resources for social support regarding the problem.

Citations

Citations to this article as recorded by

Changes in the Levels of Stress Perception, Experiencing Depressive Symptoms and Health-Related Quality of Life of Residents after the 2016 Gyeongju Earthquake
Young Ran Han, Yeo Won Jeong, Sang Kyu Kim, Han Seok Jeong
International Journal of Environmental Research and Public Health.2021; 18(2): 540. CrossRef
Medical litigation experience of the victim of medical accident: a qualitative case study
Jeehee Pyo, Minsu Ock, Young-Joo Han
International Journal of Qualitative Studies on Health and Well-being.2019;[Epub] CrossRef
Psychological Risk Factors for Posttraumatic Stress Disorder in Workers After Toxic Chemical Spill in Gumi, South Korea
Ji Young Song, Kyoung-Sook Jeong, Kyeong-sook Choi, Min-gi Kim, Yeon-Soon Ahn
Workplace Health & Safety.2018; 66(8): 393. CrossRef
Stressors of Korean Disaster Relief Team Members during the Nepal Earthquake Dispatch: a Consensual Qualitative Research Analysis
Kangeui Lee, So Hee Lee, Taejin Park, Ji-yeon Lee
Journal of Korean Medical Science.2017; 32(3): 507. CrossRef
Duty-related incidental stress and the coping method in new firefighters
Mi-Lye Baek
The Korean Journal of Emergency Medical Services.2014; 18(3): 53. CrossRef

24 View
0 Download
5 Crossref

Relationship between Community Social Support and Psychosocial Distress in Workers: Hwa Young Lim, Hyeong Su Kim, Young Hwan Choi, Soung Hoon Chang, Kun Sei Lee, Kyunghee Jung Choi, Won Ki Oh, Jae Wook Choi, Chun Hwa Jeoung; Korean Journal of Occupational and Environmental Medicine 2006;18(4):327-338. Published online December 31, 2006; DOI: https://doi.org/10.35371/kjoem.2006.18.4.327

Abstract PDF

OBJECTIVE: This study was performed to examine the relationship between community-based social support and psychosocial distress in workers.
METHODS
The study subjects were 596 workers recruited from 11 companies in Chungju city. A structured questionnaire was used to assess sociodemographics, health-related behaviors, job characteristics, job stress, work-based social support, community-based social support and level of psychosocial distress.
RESULTS
Hierarchical multiple regression analysis showed that workers with no chronic disease, exercise and sufficient sleep had a higher score of psychosocial distress than those with chronic disease, no exercise, and not enough sleep. Coworker's work-based social support and community-based social support were negatively associated with psychosocial distress. The R square value of total independent variables on psychosocial distress was 0.409, and that of community-based social support on psychosocial distress was 0.052.
CONCLUSION
This study showed that community-based social support served as a protective factor against psychosocial distress in some workers. We recommend the establishment of a worksite stress reduction program in occupational level as well as community-based social support.

Citations

Citations to this article as recorded by

The Informative Support and Emotional Support Classification Model for Medical Web Forums using Text Analysis
Jiyoung Woo, Min-Jung Lee, Yungchang Ku
Journal of the Korea society of IT services.2012; 11(sup): 139. CrossRef
Job Stress Level and It's Related Factors in Firefighters
Mi-Suk Choi, Dong-Ha Ji, Jin-Woo Kim
Journal of the Korea Academia-Industrial cooperation Society.2012; 13(10): 4917. CrossRef

31 View
0 Download
2 Crossref

Relationship between Injury Occurrence and Workplace Organization in Small-sized Manufacturing Factories: Kun Sei Lee, Hyeongsu Kim, Soung Hoon Chang, Kyung Hee Jung-Choi, Won Ki Oh, Jae Wook Choi, Kwan Hyung Yi, Ji Young Oh; Korean Journal of Occupational and Environmental Medicine 2006;18(2):73-86. Published online June 30, 2006; DOI: https://doi.org/10.35371/kjoem.2006.18.2.73

Abstract PDF

OBJECTIVE: This study evaluated the relationship between injury occurrence and workplace organization in small-sized, manufacturing factories in Korea.
METHODS
Using data from the 2004 Occupational Safety and Health Survey in Korea, this study compared workplace organizational factors (general characteristics, employee characteristics and health and safety characteristics) with injury occurrence of 1,866 small-sized, manufacturing factories (65,921 population factories after weighting). General characteristics of factories comprised location, type and classification of industry. Employee characteristics comprised proportion of manual workers and female workers, average working hours per week and shiftwork. Health and safety characteristics comprised type of safety and health manager, committee for occupational safety and health, labor union, health and safety regulation, monthly health and safety training time, score of health and safety activity and score of safety culture.
RESULTS
The following characteristics of injury-occurrence in small-sized, manufacturing factories were determined by multivariate analysis. In terms of general characteristics, the risk of injury-occurrence was higher in Jeolla area than Gyeongin area in outside associate than other enterprises and in coke, refined petroleum products and nuclear fuel, wood and products of wood, food products and beverages and fabricated metal products, except machinery and furniture industries than television and communication equipment and apparatus industries. In terms of employee characteristics, injury-occurrence significantly increased in factories with greater proportion of manual worker and with a higher rate of working hours per week. But significantly decreased in factories with a higher proportion of female workers. In terms of health and safety characteristics, injury-occurrence significantly increased in factories with a self-appointed safety manager, with unorganized union, with a more active committee for occupational safety and health, with unimplemented health and safety regulations, with longer monthly safety and health training time, and with a lower score of safety culture.
CONCLUSIONS
This study demonstrated that several factors of workplace organization were significantly related with injury-occurrence in factories. These findings are supposed to raise the need for making efforts in workplace organization to improve injury prevention.

Citations

Citations to this article as recorded by

A Policy Intervention Study to Identify High-Risk Groups to Prevent Industrial Accidents in Republic of Korea
Kwan Hyung Yi, Seung Soo Lee
Safety and Health at Work.2016; 7(3): 213. CrossRef
Validation of Performance Indicators for Evaluation of Workplace Health Promotion
Seung Hee Ho, Young Moon Chae
American Journal of Health Promotion.2015; 29(6): 402. CrossRef
A basic research on risk control measure for reducing the fishermen's occupational accident in offshore and coastal fishing vessel
Wook-Sung Kim, Young-Bok Cho, Seok-Jae Kim, Kyong-Jin Ryu, Yoo-Won Lee
Journal of the Korean society of Fisheries Technology.2014; 50(4): 614. CrossRef
Research on the Characteristics of Working Conditions and Occupational Safety and Health in the Special form Workers
Kwan Hyung Yi
Journal of the Korean Society of Safety.2014; 29(4): 147. CrossRef
Effects of health and safety problem recognition on small business facility investment
Jisu Park, Harin Jeong, Sujin Hong, Jong-Tae Park, Dae-Sung Kim, Jongseo Kim, Hae-Joon Kim
Annals of Occupational and Environmental Medicine.2013;[Epub] CrossRef

28 View
0 Download
5 Crossref

Cost of Work-related Cerebrovascular and Cardiac Disease: Hyeong Su Kim, Soung Hoon Chang, Jae Wook Choi, Kun Sei Lee, Cheong Sik Kim, Jun Young Lee, Ji Young Oh; Korean Journal of Occupational and Environmental Medicine 2002;14(3):288-300. Published online September 30, 2002; DOI: https://doi.org/10.35371/kjoem.2002.14.3.288

Abstract PDF: OBJECTIVES
The purpose of this study was to estimate the cost, with a focus on forecasting the expenditure on industrial accident compensation insurance, arising from workrelated cerebrovascular and cardiac disease.
METHODS
We used a total of 4,480 work-related cerebrovascular and cardiac disease data points, collected between 1995 and 2000, based on the year of occurrence, and which had been approved by industrial accident compensation insurance. Firstly, we calculated the number of approved cases per 100,000 workers benefiting from industrial accident compensation insurance between 1995 and 2000. We then forecasted the numbers of work-related cases of cerebrovascular and cardiac disease for the period from 2001 through 2005 using a linear regression equation. Secondly, we analysed the expenditure on industrial accident compensation insurance due to work-related cerebrovascular and cardiac disease, and estimated the expenditure per capita for the former period. Thirdly, we estimated the expenditure on industrial accident compensation insurance due to work-related cerebrovascular and cardiac disease for the latter period based on the cohort of occurrence year.
RESULTS
Approved cases per 100,000 workers for work-related cerebrovascular and cardiac disease were 3.36 in 1995 and 13.16 in 2000. It is expected that the approved cases would be 1,336 (95 % CI 1,211-1,460) in 2001 and 1,769 (95 % CI 1,610-1,931) in 2005, based on the year of occurrence. The mean expenditure per capita was estimated to be 75 million won, which comprised of 19 million won for medical care benefits and 56 million won for other benefits. It was anticipated that the claims for the 2001 cohort would be 107.9 billion won and 192.4 billion won for the 2005 cohort.
CONCLUSIONS
The magnitude of the economic burden of work-related cerebrovascular and cardiac disease is substantial. From an economic perspective, this study proves the importance and need for the management of work-related cerebrovascular and cardiac disease.

28 View
0 Download

The Relationship between psychosocial stress and Work-related Musculoskeletal Symptoms of Assembly Line Workers in the Automobile industry: Il Ryong Kim, Jae Young Kim, Jong Tae Park, Jae Wook Choi, Hae Joon Kim, Yong Tae Yeom; Korean Journal of Occupational and Environmental Medicine 2001;13(3):220-231. Published online September 30, 2001; DOI: https://doi.org/10.35371/kjoem.2001.13.3.220

Abstract PDF

OBJECTIVES
To determine the relationship between stress Factors and work-related musculoskeletal symptoms of assembly line workers in the automobile industry.
METHODS
A cross-sectional study was conducted in two Factories of automobile manufacturing companies where inappropriate posture and repetitive motions were required. The total number of subjects was 636, and consisted entirely of men. The Age, length of work duration, marital status, education level, smoking status, drinking status, sleeping time and stress scores were investigated according to subgroups of general characteristics. We divided the subjects into a Reference group and a Stress risk group to compare the frequency of the variables between them. The stress scores of the Positive symptom group were compared with the Symptom free group by the t-test. To measure the stress level, the PWI(Psychosocial Well being Index) which consists of 4 Factors, totaling 45 items, was used. A standardized self-reported questionnaire was used to assess the symptoms in workers. The criteria for positive symptoms were based on Operational Definition of Work-related Musculoskeletal Disorders of the NIOSH.
RESULTS
1) The subgroups of Age, Work duration, Marital status, Education level, Smoking status, Drinking status and Sleeping time revealed no differences in frequencies in musculoskeletal symptoms. 2) Higher PWI(p<0.05), Factor 3(p<0.05) and Factor 4(p<0.01) scores were observed in younger workers compared with older workers. 3) The workers who had work durations between 11-15 years showed higher PWI(p<0.01), Factor 2(p<0.01), Factor 3(p<0.01), and Factor 4(p<0.01), compared with other work duration subgroups. 4) Singles had higher Factor 4 scores(p<0.01). 5) The sleeping time of less than 6 hours a day expressed a higher PWI(p<0.01), Factor 2(p<0.05), and Factor 3(p<0.01), Factor 4(p<0.05). 6) There was no difference in the prevalence of musculoskeletal symptoms between the Reference group and Stress risk group. 7) The subjects who had Positive musculoskeletal symptoms showed a significant difference in Factor 2 scores compared with the Symptom free groups. 8) According to a univariate logistic regression analysis, Factor 2(OR: 1.02, 95% CI: 1.00-1.04, p-value: 0.0291) expressed significant but mild effects on the musculoskeletal symptoms and a multivariate logistic regression showed a statistically significant effect on musculoskeletal symptoms(OR:1.04, 95% CI: 1.01-1.07, p-value: 0.0170).
CONCLUSION
Psychosocial stress scores were not higher in symptomatic subjects compared with those who had no symptoms. Sleeping longer showed a protective effect on symptoms but this was not statistically significant. There was no relationship between the stress scores and musculoskeletal symptoms in social performance and self-confidence, general well-being and vitality. Factor 2(Depression) was statistically significant though its effect was mild. Limited to this study, We could find partial relationship between psychosocial stress(Depression) and musculoskeletal symptoms. So it could therefore be suspected that ergonomic or other unknown factors may be more significant causes of musculoskeletal symptoms but we did not investigate these.

Citations

Citations to this article as recorded by

Musculoskeletal Disorder Symptoms and Its Related Factors among Male Workers in Manufacturing Industries
Seung-Hyun Lee, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2015; 16(10): 6627. CrossRef
A Study on the Work Ability and the Job Stress of the Workers in Manufacturing Industry of Automobile Parts
Yun-Soo Mok, Dong Won Lee, Seong Rok Chang
Journal of the Korean Society of Safety.2013; 28(3): 100. CrossRef
Musculoskeletal Disorder Symptoms and Related Factors among Male Workers in Small-scale Manufacturing Industries
Seung-Hyun Lee, Ju-Yeon Lee, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2012; 13(9): 4025. CrossRef
Work-related Musculoskeletal Disorders among Agricultural Workers
Soo-Jin Lee, Hwan-Jin Park
Journal of the Ergonomics Society of Korea.2011; 30(4): 525. CrossRef

34 View
1 Download
4 Crossref

Effect of Occupational Lead on Male Sex Hormones: Hyeong Su Kim, Soung Hoon Chang, Won Jin Lee, Jae Wook Choi, Jong Tae Park, Nam Won Paik, Rok Ho Kim; Korean Journal of Occupational and Environmental Medicine 2001;13(1):44-54. Published online March 31, 2001; DOI: https://doi.org/10.35371/kjoem.2001.13.1.44

Abstract PDF: OBJECTIVES
This study was performed to evaluate the relationship between biological markers of lead exposure and level of sex hormones in men occupationally exposed to lead.
METHODS
In this study, 33 male workers who employed at smelting and battery factories were compared with 33 male workers who were not exposed to lead. As biological markers of lead exposure, hemoglobin, ZPP, blood lead and urine lead were measured. As sex hormones, FSH, LH, testosterone, SHBG and FTI were determined.
RESULTS
Hemoglobin level was significantly lower in exposed than in nonexposed group. Level of ZPP, blood lead, and urine lead were significantly higher in exposed than in nonexposed group. There was a trend that level of FSH, testosterone, SHBG, and FTI was lower in exposed than in nonexposed group respectively, but there were no statistical significance. In exposed group, FSH level was correlated with age, ZPP, and blood lead; testosterone level was correlated with hemoglobin, blood lead, urine lead, and SHBG; and FTI level was correlated with age.
CONCLUSIONS
Level of some sex hormones were lower in exposed than in nonexposed group but there were no statistical significance between the exposed and the nonexposed group. But level of sex hormones were correlated with several biological markers of lead in exposed group. It suggests that occupational lead exposure might affect sex hormones.

18 View
0 Download

Olfactory Function in Chromium Exposed Workers Without Nasal Septum Perforation: Jae Wook Choi, Soung Hee Lee, Yeon Kuk Choi, Eun Il Lee, Hae Joon Kim; Korean Journal of Occupational and Environmental Medicine 2000;12(2):198-208. Published online June 30, 2000; DOI: https://doi.org/10.35371/kjoem.2000.12.2.198

Abstract PDF: OBJECTIVES
The chrome-induced olfactory alterations is caused by inhalation of chromic acid, a highly corrossive and toxic materials. And nasal septum perforation(NSP) has been suspected with possible causative factor of olfactory alterations. To our knowledge, there has been no report of the detailed findings of the olfactory alterations in chrome exposed subjects without nasal septum perforation(NSP). So we present the results of olfactory function test measured by T&T olfactometer and olfactometer perception test among chromium exposed workers without NSP.
METHODS
We performed this study in 25 study subjects and 25 control subjects matched with age, alcohol and smoking. All of subjects are man. We performed olfactory function test measured by T&T olfactometer and olfactometer perception test.
RESULTS
1) The age distribution of the subjects involved in this study was from 20 to 54 years old (average 33.3 years old) and the mean duration exposed to chromium was from 64. 9 months. 2) The olfactory function was checked by detection and recognition thresholds in five odorants. The detection thresholds of exposed group dealing with chromium were significantly increased in A and B ordorants than nonexposed group. The recognition thresholds of exposed group were significantly increased in D ordorants than nonexposed group. 3) The mean threshold of olfactometer perception test of exposed group were more increased than nonexposed group. But thresholds difference did not show statistical significance, 4) The detection thresholds of A and D ordorants, recognition threshold of C ordorants and thresholds of olfactometer perception test were increased in the relation with duration of chrome exposure.
CONCLUSIONS
There has been no remarkable alterations in olfactory sense (TkT olfactometer and Olfactometer Perception Test) in subjects without nasal septum perforation(NSP) exposed to chromic acid.

36 View
1 Download

Micronuclei in Peripheral Blood Lymphocytes of Chromate Workers: Jung Ho Rah, Young Whan Kim, Jae Wook Choi, Hae Joon Kim; Korean Journal of Occupational and Environmental Medicine 1999;11(3):393-406. Published online September 30, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.3.393

Abstract PDF: No abstract available.

23 View
0 Download

A Study on Thyroid Function among Male Workers Occupationally Exposed to Inorganic Lead: Hyeong Su Kim, Yun Cheol Park, Jae Wook Choi, Woo Whan Rho, Dae Seong Kim, Jong Tae Park; Korean Journal of Occupational and Environmental Medicine 1999;11(2):153-160. Published online June 30, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.2.153

Abstract PDF

This study was performed to evaluate the relationship between biological markers of lead exposure and thyroid functions among male workers occupationally exposed to inorganic lead. 30 male workers exposed to inorganic lead at smelting and battery factories were investigated, and 30 male control workers who were not exposed to inorganic lead occupationally were chosen for this study. The data were obtained using direct interview and assessment of biological markers of lead exposure and thyroid indices. As biological markers for lead exposure, blood ZPP. blood lead, urine lead and hemoglobin were measured. As thyroid indices. TSH and FT4were determined. The results of the study were summarized as follows 1. Levels of ZPP, blood lead, and urine lead were significantly higher in lead-exposed group than in nonexposed control group(p<0.01 all). Hemoglobin level was significantly lower in lead-exposed group than in nonexposed group(p<0.01). 2. Study subjects had normal values of TSH and FT4 But TSH level was insignificantly lower in lead-exposed group than in nonexposed control group(p=0.11) and FT4 level was significantly lower in lead-exposed group than in nonexposed group(p<0.01). 3. As the result of simple regression analysis in lead-exposed group. FT4 level was negatively correlated with the amount of smoke, blood ZPP, and blood lead(p < 0.05 all). 4. In lead-exposed group, FT4 was used as a independent variable and age, the amount of smoke, blood ZPP, and blood lead were entered as a dependent variables in the model. As the result of multiple regression analysis with stepwise selection method, the amount of smoke and blood ZPP were negative predictors of FT4(p=0. 04, p=0.09, respectively). In conclusion, levels of TSH and FT4were lower in lead-exposed group than in nonexposed control group. In lead-exposed group, FT4 level was negatively correlated with amount of smoke, blood ZPP, and blood lead in simple regression analysis. To clarify this relation, further research between lead exposure and thyroid function may be required for worker with long-term lead exposure or high lead exposure.

Citations

Citations to this article as recorded by

Occupational Hearing Loss in Korea
Kyoo Sang Kim
Journal of Korean Medical Science.2010; 25(Suppl): S62. CrossRef

20 View
0 Download
1 Crossref

A Study of Working Status and Industrial Accidents for Migrant Workers in Korea: Jeong Ah Kim, Jae Wook Choi, Hae Joon Kim, Jong Tae Park; Korean Journal of Occupational and Environmental Medicine 1999;11(1):66-79. Published online March 31, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.1.66

Abstract PDF

This study was conducted to evaluate and to recognize the status and the problems of working conditions, and industrial accidents for migrant workers in a group of 342 who lives in Ansan area, Kyunggi province. By the questionnaire written by 5 languages (English, Bangladesh, Indonesian, Chinese and Korean), the informations of socio-demographic factors, occupational conditions of engaged company and general & occupational health status were obtained from June, 1st to July 30th, 1998. We used the ANOVA to examine differences of working hours, days and average monthly wages between overseas industrial trainee and illegal migrant workers, and by using logistic regression, odds ratio of general risk factors for industrial accidents in migrant workers were calculated. The results obtained were as follows 1. The major distribution of nationals were from Philippine, Indonesia, Bangladesh and China(92.1%), and the most of subjects were man(78.9%) and over high school graduate(81.9%). 2. Most migrant workers worked at small scale companies under 50 employees, and engaged in dye, textile clothing, leather industry. The average working hours were 59.9 hours per week in overseas industrial trainee, 64.9 hours in illegal migrant worker respectively. 3. Trainees have transferred to another company for 1.89 times, and workers who have changed qualification from trainee to illegal status were 3.09 tims, and illegal workers moved 2.36 times. The major portion of reason to move to another company were low salary and overdue salary. 4. Trainees, workers who have changed position from trainee to illegal status, and illegal workers knows 62.27%, 42.31%, and 20.45% in each about legal documentation for foreign industrial trainees in Korea "Regulations for protecting and managing of foreign industrial trainees in Korea" published on March 1995. Additionally, trainees and illegal workers have experienced medical examination by 52.3% and 18.2% respectively. 5. Industrial accident condition from Jun. 1st, 1997 to Dec. 3lth, 1997 were as follows in case of frequent rate, trainees and illegal workers were 30.04, 23.78 each, and 8.6%, 7.4% for industrial accident rate respectively. 6. The most common causes and types of industrial accident were inappropriate motions of body and abrasion, and body sites most vulnerable to injury were the hands and fingers. The results suggest that working status and industrial accidents of migrant workers are very poor in Korea. Therefore, occupational safety and health policy aimed at migrant workers are needed to protect the migrant workers.

Citations

Citations to this article as recorded by

Occupational Characteristics and Health Status of Vietnamese Male Migrant Workers in the Republic of Korea
Ohwi Kwon, Ji-Hun Song, Jeong-Ok Kong, Seong-Won Ma, Young Shin Lee, Joonho Ahn
Safety and Health at Work.2023; 14(3): 267. CrossRef
A Study on the Characteristics of Injured Workers Rate and Work Environment of Male Workers for over 40 years
Kil-Yong Choi, Kyung-Soo Yang
The Korean Journal of Health Service Management.2016; 10(1): 131. CrossRef

29 View
0 Download
2 Crossref

Comparison of Blood Pre-treatment Methods for Determining Erythrocyte Pyrimidine 5'-Nucleotidase Activity: Byung Hean Kim, Hae Joon Kim, Jae Wook Choi, Eunil Lee, Yong Tae Yum; Korean Journal of Occupational and Environmental Medicine 1997;9(4):565-578. Published online December 31, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.4.565

Abstract PDF: Sakai's method has been known as the simplest one for determination of erythrocyte pyrimidine 5'-nucleotidase (P5N) activity using high performance liquid chromatography(HPLC). However the drawback of the method is that it is difficult to wash the erythrocyte for isolation. To search for the simpler method, we compared Sakai's method with other methods using whole blood treated with heparin and concanavalin A or whole blood treated with EDTA-2K instead of washing the erythrocyte. The mean concentrations of lead in blood samples collected from 44 male and 16 female workers who are healthy without any exposure to lead in their workplace were 4.30 +/- 1.31 microgram /dl (mean +/-standard deviation), which were measured by frameless atomic absorption spectrophotometer. Erythrocyte P5N activities were measured by 3 methods; Sakai's method(Method I), using whole blood treated with heparin and concanavalin A (Method II), and using whole blood treated with EDTA-2K (Method III). The results were obtained as follows ; 1. The mean of erythrocyte P5N activity by Sakai's method(Method I) were 12.7 +/-2.47 amole uridine/hr/gm of Hb. 2. The mean of erythrocyte P5N activity by the method using heparinized whole blood treated with concanavalin A(Method II) were 13.1 +/-2.41 micromole uridine/hr/gm of Hb. 3. The difference of mean erythrocyte P5N activity between Method I and Method was not significant. 4. The erythrocyte P5N activity by the method using whole blood treated with EDTA-2K (Method III) was significantly different from Method I. We thought that omission of incubation period which was required on Method III using EDTA-2K caused the difference between Method I and Method III. 5. Simple linear regression equation for erythrocyte P5N activity between Method I (Y) and Method II(X) was significant: Y = -0.012 + 0.9724 X. These results suggest that the method using whole blood treated with heparin and concanavalin A is simpler to examine the erythrocyte P5N activity as a biological indicator of lead intoxication than Sakai's method.

21 View
0 Download

A Study of the Correlation Between the Activity of Erythrocyte Pyrimidine 5'-Nucleotidase and Urinary N-Acetyl-beta-D-Glucosaminidase in Lead Exposed Workers: Soung Hoon Chang, Cheon Hyun Hwang, Won Jin Lee, Soung Soo Lee, Byung Kook Lee, Hong Kyu Suh, Jae Wook Choi; Korean Journal of Occupational and Environmental Medicine 1997;9(2):258-266. Published online June 30, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.2.258

Abstract PDF: In this study, we measured the activity of the erythrocyte pyrimidine 5'-nucleotidase (P5N) and urinary N-acetyl-beta-D-glucosaminidase (NAG) from 154 workers exposed to lead and 43 workers not exposed. We analyzed the correlation of the P5N activity and NAG activity with other biological exposure indices of lead such as blood lead (PbB) and zinc protoporphyrin (ZPP). The measurement was performed by using high performance liquid chromatography (HPLC), spectrophotometer and atomic absorption spectrophotometer. The results are as follows: 1. The mean value of P5N activity for workers exposed to lead was 9.50+/-.13 micromol uridine/hr/g Hb and 11.60+/-.2 micromol uridine/hr/g Hb for workers not exported. The P5N activity showed a normal distribution, but the other indices of lead showed logarithmic normal distributions. 2. The P5N activity and ZPP were decreased as PbB wag increased. But the NAG activity had no correlation with changes of PbB. 3. The correlation coefficients of the P5N activity with other biological exposure indices of lead such as PbB, ZPP, NAG activity were -0.72, -0.55, and 0.05, respectively. We speculated that the P5N activity can be used as a reliable biological exposure index of lead but NAG activity can be used as a biological management index of lead.

16 View
0 Download

Musculoskeletal Diseases of Upper Extremities Among the Electronic Assembly Workers and Telecommunication Workers: Jae Wook Choi, Yorig Tae Yum, Dong Bin Spng, Jong Tae Park, Soung Hoon Chang, Jung Ae Choi; Korean Journal of Occupational and Environmental Medicine 1996;8(2):301-319. Published online September 30, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.2.301

Abstract PDF

The purpose of this study is to investigate the current status of and to collect the basic informations of musculoskeletal diseases of upper extremities in manufacturing and telecommunication companies. The subjects were 213 workers, consisted Of 98 manufacturing workers and 115 telephoBfi operators. The musculoskeletal ,symptom survey, Job safety analysis (JSA), and medical examinations including neurologic, and'nerve.cqnduction velocity (NCV) test were conducted.: All workers were women in company A, while the other composed of 68(69.4%) men and 30(30.6%) women. The results were as follows: 1. The rates of self-reporting symptoms in each company were 85.2% at the neck, 81.1% at the shoulder joint, 73.0% at the wrist joint and 34.8% at the elbow joint in company A, while 56.1% at the shoulder joint, 51.2% at the neck and 23.5% at the elbow joint in company B in order. 2. No relationship was observed between the work duration and symptom rate in company A, but the highest symptom rate was observed at the neck in 10-19 year work duration group, at the shoulder, elbow and wrist joint in 5-9 year work duration group in company B. 3. Over the 22.8% of total workers in this study having symptoms got medical treatment at the medical clinics or drug stores, but there was no statistical difference between both companies. 4. In company A, 16(13.9%) workers were classified as D category, 12(10.4%) workers as C category and 2(1.7%) workers as R category among 115 workers. And D category was 10(10.2%), C category 31(31.6%) and R category 4(4.0%) among 98 workers in company B. D category means disease category needed futher treatment, C category means disease category needed no treatment and R category means recheck category, needed futher evaluation. 5. The types of musculoskeletal disorders including D, C, and R category were 46 cases(D 13, C 30, R 3) of tension neck .syndrome (TNS), 16 cases (D 3, C 8, R 5) of carpal tunnel syndrome (CTS), 5 cases of De Quervain's disease, 3 cases of lateral epicondylitis, 3 cases of bicipital tendinitis, 3 cases of rotator cuff tendinitis, 2 cases of medical epicondylitis, and 5 cases of cervical disc syndrome. 6. In company A, the total cases of 11 TNS, 8 CTS, 3 De Quervain's disease, 3 lateral epicondylitis, 3 rotator cuff tendinitis and 1 cervical disc syndrome were diagnosed and so were total cases of 35 TNS, 8 CTS and 4 cervical disc syndrome in company B. 7. By stepwise multiple regression analysis with dichotomization of musculoskeletal disease, the following odds ratios were significantly high (p<0.05)-sex (2.707) and age(l.926).

Citations

Citations to this article as recorded by

Effects of the Health Support Network Project on Musculoskeletal Disorders of Females
Deok-Ju Kim, Hee-Jung Han, Yeong-Ae Yang
The Korean Journal of Health Service Management.2015; 9(1): 169. CrossRef
Work-related Musculoskeletal Disorders in Korea Provoked by Workers’ Collective Compensation Claims against Work Intensification
Dongmug Kang, Youngki Kim, Young-Il Lee, Sangbaek Koh, Inah Kim, Hoonkoo Lee
Annals of Occupational and Environmental Medicine.2014;[Epub] CrossRef
Study on the Musculoskeletal Subjective Symptoms Disorders and Health Promotion Behavior of Daily Plant Construction Workers in One Area
Ja-Sook Kim, Ja-Ok Kim, Ji-Yong Seo, Hack-Sun Kim
Korean Journal of Occupational Health Nursing.2014; 23(1): 28. CrossRef
The Trends and Status of Work-related Musculoskeletal Diseases under Korean Worker's Compensation System
Kyung Ha Kim, Rah Il Hwang, Min Hyun Suk
Korean Journal of Occupational Health Nursing.2013; 22(2): 102. CrossRef
Risk Factors of Work-related Upper Extremity Musculoskeletal Disorders in Male Shipyard Workers: Structural Equation Model Analysis
Byung-Chan Park, Hae-Kwan Cheong, Eun-A Kim, Soo Geun Kim
Safety and Health at Work.2010; 1(2): 124. CrossRef

34 View
1 Download
5 Crossref

Evaluation of Mercury Concentration in Spot Urine for Biological Monitoring Among Metallic Mercury Exposed Workers: Durumee Hong, Soon Duck Kim, Yong Tae Yum, Jae Wook Choi; Korean Journal of Occupational and Environmental Medicine 1996;8(1):127-136. Published online February 29, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.1.127

Abstract PDF: Biological monitoring for exposures permits estimation of organ doses or body burdens from exposures through all relevant portals of entry. Biological monitoring data may be used to estimate environmental concentrations when the latter cannot be measured directly. Biological indices are usually surrogates for the concentration of a chemical or its metabolites or its effect at the true receptors. Mercury concentration in urine has-been most-coinmoialy-recommended as a biological exposure index of mercury. For data based on urine analysis, variation in urine volume is the most significant. The urinary concentration related to excretion of the solute provides some correction for fluctuation of urine output. Sampling time must be carefully observed because distribution and elimination of a chemical are kinetic events. This study has evaluated mercury concentration in spot urine compared to the results of 24 hour collected urine by the adjustment methods (specif ic gravity, creatinine) and sampling time. The subjects were 43 workers who had been exposed to the metallic mercury. The results were as follows: 1. The correlation coefficients between mercury concentration in 24 hour urine and that in spot urine were 0.639-0.715 and were not different by adjustment methods. 2. In the high exposure group who were over lOOug/1 of urinary mercury, the correlation coefficients between mercury concentration in 24 hour urine and that in spot urine were 0. 687-0.824 and were not different by adjustment methods. 3. Mercury concentration in spot urine were very variable by sampling time or exposure time. The correlation coefficients between mercury concentration in 24 hour urine and that in spot urine were most highest as 0.85-0.91 at first voiding urine in the morning, and were 0. 77-0.86 at urine collected within four hours before end of shift. In the biological monitoring to exposure of mercury, sampling of spot urine were most proper at first voiding urine in the morning, and then at urine collected within four hours before end of shift. But the adjustment methods of specific gravity and creatinine were no difference of the results.

22 View
0 Download

Study on the states of occupational health management about the subcontract company among the medium and small scale companies: Jae Wook Choi, In Sung Oh, Yong Tae Yum; Korean Journal of Occupational and Environmental Medicine 1993;5(2):262-273. Published online September 30, 1993; DOI: https://doi.org/10.35371/kjoem.1993.5.2.262

Abstract PDF: No abstract available.

16 View
0 Download

A review of the carbon disulfide poisoning experiences in Korean: Jae Wook Choi, Soung Hoon Jang; Korean Journal of Occupational and Environmental Medicine 1991;3(1):11-20. Published online February 28, 1991; DOI: https://doi.org/10.35371/kjoem.1991.3.1.11

Abstract PDF

No abstract available.

Citations

Citations to this article as recorded by

Carbon Disulfide Retinopathy Caused by Chronic Carbon Disulfide Intoxication
Ji Hyun Lee, Moon Jung Choi
Journal of the Korean Ophthalmological Society.2020; 61(11): 1373. CrossRef
Recognition and Using Status of Carbon Disulfide (CS2) as Fumigant for Controlling Chestnut Weevil, Curculio sikkimensis among Chestnut Farmers
Moo-Sik Lee, Eun-Young Kim, Jae-Lim Lee, Gi-Yeon Sohn
Journal of agricultural medicine and community health.2016; 41(2): 63. CrossRef
Preparation of Eco-friendly and High Strength Paper for Viscose Rayon Yarn
Sung-Jun Hwang, Hyoung-Jin Kim, Paek-Hyun Bae
Journal of Korea Technical Association of The Pulp and Paper Industry.2015; 47(6): 154. CrossRef
Compensation for Occupational Diseases by Chemical Agents in Korea
Soon-Chan Kwon, Soo-Yong Roh, Ji-Hoon Lee, Eun-A Kim
Journal of Korean Medical Science.2014; 29(Suppl): S78. CrossRef
Toxic Encephalopathy
Yangho Kim, Jae Woo Kim
Safety and Health at Work.2012; 3(4): 243. CrossRef
Occupational Neurologic Disorders in Korea
Yangho Kim, Kyoung Sook Jeong, Yong-Hun Yun, Myoung-Soon Oh
Journal of Clinical Neurology.2010; 6(2): 64. CrossRef
Occupational Diseases in Korea
Seong-Kyu Kang, Eun A Kim
Journal of Korean Medical Science.2010; 25(Suppl): S4. CrossRef
Work-related Cerebro-Cardiovascular Diseases in Korea
Dae-Seong Kim, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S105. CrossRef
Occupational Neurological Disorders in Korea
Eun-A Kim, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S26. CrossRef
Transfer of occupational health problems from a developed to a developing country: Lessons from the Japan–South Korea experience
Jungsun Park, Naomi Hisanaga, Yangho Kim
American Journal of Industrial Medicine.2009; 52(8): 625. CrossRef
Brain MRI Findings of Carbon Disulfide Poisoning
Joo Hee Cha, Sam Soo Kim, Heon Han, Rok Ho Kim, Sang Hyuk Yim, Mi Jung Kim
Korean Journal of Radiology.2002; 3(3): 158. CrossRef
Carbon Disulfide Poisoning in Korea with Social and Historical Background
Eunil Lee, Soonduck Kim, Haejoon Kim, Kwangjong Kim, Yongtae Yum
Journal of Occupational Health.1996; 38(4): 155. CrossRef

22 View
0 Download
12 Crossref

Author index