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Ho Keun Chung 28 Articles
Relationship between Job Stress and Pulse Wave Velocity as a Cardiovascular Risk Factor
Jung Ok Kong, Sang Baek Koh, Sei Jin Chang, Bong Suk Cha, Ho Keun Chung, Hong Ryul Choi, Kyung Hee Jung-Choi, Soon Ja Jeon
Korean Journal of Occupational and Environmental Medicine 2004;16(4):450-458.   Published online December 31, 2004
DOI: https://doi.org/10.35371/kjoem.2004.16.4.450
AbstractAbstract PDF
OBJECTIVE: The objective of this study was to elucidate the relationship between job stress and pulse wave velocity (PWV) as a cardiovascular risk factor.
METHOD
The study design was cross-sectional, and a total of 234 industrial workers were recruited. A structured-questionnaire was used to assess the general characteristics and job characteristics (work demand, decision latitude) using a modified Karasek model. Cuffs were applied to the extremities and a microphone for phonocardiography was placed at the second intercostal space at the margin of the sternum. The subjects rested in a supine position for 5 min, and PWV was measured using a VP-1000(Colin Waveform analyzer).
RESULTS
There were significant correlations between blood pressure, glucose, total cholesterol, coagulation factor and PWV. The group with low decision latitude and high decision latitude showed higher levels of PWV, but the differences were not significan. The PWV (left) was significantly higher in the high strain group than in the lower strain group. After adjustment for age and cardiovascular risk factors, job strain was still associated with PWV.
CONCLUSION
These result suggest that the high strain group among workers is related to an increased risk of PWV as a marker of atherosclerosis.

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  • Hemodynamic and Stress Response After Sound Intervention with Different Headphone Systems: A Double-Blind Randomized Study in Healthy Volunteers Working in the Health Care Sector
    Anna Hohneck, Christina Reyser, Rimma Usselmann, Lara Heinemann, Simone Weingaertner, Hardy Reckling, Gerhard Schumacher, Iris Burkholder, Kirsten Merx, Wolf-Karsten Hofmann, Ralf-Dieter Hofheinz
    Journal of Integrative and Complementary Medicine.2024; 30(4): 360.     CrossRef
  • Differential Effects of Sound Intervention and Rest on Cardiovascular Parameters in Cancer Patients: A Randomized Cross-over Trial
    Anna Hohneck, Christina Reyser, Kirsten Merx, Simone Weingärtner, Athanasios Mavratzas, Gerhard Schumacher, Christoph Linhuber, Wolf-Karsten Hofmann, Iris Burkholder, Ralf-Dieter Hofheinz
    Integrative Cancer Therapies.2021; 20: 153473542199523.     CrossRef
  • Firefighters’ occupational stress and its correlations with cardiorespiratory fitness, arterial stiffness, heart rate variability, and sleep quality
    Young-Sook Yook, Kiyoshi Sanada
    PLOS ONE.2019; 14(12): e0226739.     CrossRef
  • Comparison of Vessel Elasticity according to Risk Factors for Coronary Artery Disease, and the Mediating Effects of Treatment Compliance among Patients with Percutaneous Coronary Intervention
    Ga Ram Yeo, Kyung Mi Sung
    Journal of East-West Nursing Research.2016; 22(1): 32.     CrossRef
  • Development of pulse diagnostic devices in Korea
    Hyunho Kim, Jong Yeol Kim, Young-Jae Park, Young-Bae Park
    Integrative Medicine Research.2013; 2(1): 7.     CrossRef
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Job Stress, Heart Rate Variability and Metabolic Syndrome
Sei Jin Chang, Sang Baek Koh, Hong Ryul Choi, Jong Min Woo, Bong Suk Cha, Jong Ku Park, Yong Hee Chen, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 2004;16(1):70-81.   Published online March 31, 2004
DOI: https://doi.org/10.35371/kjoem.2004.16.1.70
AbstractAbstract PDF
OBJECTIVE: A growing body of literature has documented that job stress is associated with the development of cardiovascular disease. Nevertheless, the pathophysiological mechanism of this association remains unclear. Therefore, we tried to elucidate the relationship between job stress, heart rate variability and metabolic syndrome.
METHOD
The study design was cross-sectional, and 169 industrial workers were recruited. A structured-questionnaire was used to assess the general characteristics and job characteristics (work demand, decision latitude). Heart rate variability (HRV) was recorded using SA-2000 (medi-core). HRV was assessed by time-domain and by frequency-domain analyses. Time domain analysis was performed for SDNN (Standard Deviation of NN interval), and spectral analysis for low-frequency (LF), high-frequency (HF) and total frequency power. Metabolic syndrome was defined on the basis of clustering of risk factors, when three or more of the following cardiovascular risk factors were included in the fifth quintile: glucose, systolic blood pressure, HDL-cholesterol (bottom quintile), triglyceride and waist-hip ratio.
RESULTS
The results showed that job characteristics were not associated with cardiovascular risk factors. The high strain group had a less favorable cardiovascular risk profile with higher levels of blood pressure, glucose, homocysteine, and clotting factor than the lower strain group (low strain+passive+active group), but the difference was not statistically significant. The SDNN of HRV was significantly lower in the high strain group than in the low strain group. The prevalence of metabolic syndrome in the low strain, passive, active and high strain groups was 9.7%, 13.9%, 14.9% and 23.8%, respectively. In the high strain group, the metabolic syndrome was significantly related to a decreased SDNN. However, we could not find a significant association in LF/HF ratio.
CONCLUSION
This result suggests that decreased HRV does not play a role in the development of disease; however, it can induce cardiovascular abnormalities or dysfunctions related to the onset of heart disease among high risk groups.

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  • Effect of Gardening Activity Level on Stress Changes in Police Officers
    Hye Sook Jang, Yun-Im Kang, Jung Nam Suh, Kyung Hye Seo, Myung Suk Ahn, Doo Young Ryu
    Flower Research Journal.2024; 32(1): 40.     CrossRef
  • Analysis of Preference in Plant Fragrances and Psychological Evaluation of Firefighter
    Hye Sook Jang, Eunha Yoo, Jeong Hee Kim, Sun-Jin Jeong, Jae Soon Kim, Doo Young Ryu
    Journal of People, Plants, and Environment.2021; 24(2): 137.     CrossRef
  • Dynamics of heart activities during moral dilemmas solving by children 4—11 years old
    I.M. Sozinova, A.V. Bakhchina, Y.I. Alexandrov
    Experimental Psychology (Russia).2017; 10(3): 97.     CrossRef
  • Temperament and Character Traits, Heart Rate Variability and Occupational Stress in New Nursing Employees
    Min Soo Ko, Yong Lee Jang, Jin Sook Choi, Hyun Bo Shim, Hee Jung Nam, Mee Suk Wang, In Deok Lee, Hae Woo Lee
    Journal of Korean Neuropsychiatric Association.2016; 55(3): 271.     CrossRef
  • Relation of Health Promotion Behaviors and Metabolic Syndrome in Daytime Workers
    Dae-Sik Ko, Bu-Yeon Park, Gyeong-Hyu Seok
    The Journal of the Korea institute of electronic communication sciences.2013; 8(12): 1941.     CrossRef
  • Occupational Diseases among Office Workers
    Jung-Wan Koo
    Hanyang Medical Reviews.2010; 30(4): 274.     CrossRef
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Characteristics and Affecting Factors of Tinnitus in Noise Exposed Workers
Kyoo Sang Kim, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 2002;14(4):436-447.   Published online December 31, 2002
DOI: https://doi.org/10.35371/kjoem.2002.14.4.436
AbstractAbstract PDF
OBJECTIVES
Tinnitus is a relatively common complaint of workers who are exposed to noise. The aim of the study was to investigate the prevalence and characteristics of tinnitus as well as the factors related to the prevalence of tinnitus.
METHODS
A cross-sectional audiologic survey was combined with a questionnaire on tinnitus in a stratified random sample of 246 shipyard workers who had long-term exposure to noise.
RESULTS
Forty seven had tinnitus, giving a prevalence of 19.1 percent. The tinnitus was the here and now in 44.7 percent of cases, bilateral in 51.1 percent, and caused sleep disturbances in 12.8 percent. The prevalence of tinnitus was highest in shipfitters and those with longer exposure duration.The workers with tunnitus had consistently higher hearing thresholds at both high and low frequencies than those with no tinnitus.The workers with tinnitus had a significantly higher prevalence of hearing disorders such as conductive hearing loss, a C5-dip, and NIHL.Multivariative logistic regression indicated that past history of ear disease, working and military service exposure to noise were independently associated with tinnitus. The adjusted odds ratio estimates for tinnitus were 3.0 times greater (95%CI 1.4-6.4) for the group with a past history of ear diseases,2.3 times greater (95%CI 1.0-5.0) for the military noise exposed group,and 4.5 times greater (95%CI 1.8-11.1) for the working noise exposed group.
CONCLUSIONS
The results provide evidence that reports of tinnitus at the time of the annual audiometric testing may be useful in identifying workers at greater risk of developing significant shifts in their hearing thresholds. An awareness of the possible occurrence of tinnitus may encourage workers to cooperate more actively in a company's hearing conservation program.

Citations

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  • A systematic review of the reporting of tinnitus prevalence and severity
    Abby McCormack, Mark Edmondson-Jones, Sarah Somerset, Deborah Hall
    Hearing Research.2016; 337: 70.     CrossRef
  • The Characterisitics of Tinnitus and Its Relationship to Depression from Tinnitus Acquired from Military Service
    Kyoo Sang Kim, Ji Hae Kim, Yong Hun Yoon
    Korean Journal of Otorhinolaryngology-Head and Neck Surgery.2012; 55(12): 757.     CrossRef
  • Occupational Hearing Loss in Korea
    Kyoo Sang Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S62.     CrossRef
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Analysis of Work-Related Musculoskeletal Disease by Approved Korea Labor Welfare Corporation in 1999
Yeon Soon Ahn, Yong Hyu Choi, Seong Kyu Kang, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 2002;14(2):154-168.   Published online June 30, 2002
DOI: https://doi.org/10.35371/kjoem.2002.14.2.154
AbstractAbstract PDF
OBJECTIVES
The purpose of this study was to analyze the characteristics of workrelated musculoskeletal diseases, as listed by the Korea Labor Welfare Corporation (KLWC).
METHODS
Using the database of the KLWC, we collected information from 410 approved occupational musculoskeletal disease cases, which occurred between 1 January and 31 December 1999 and were approved by 30 June in 2000. We investigated the characteristics of the disease using a mail survey and telephone interviews. The characteristics we investigated included : sex, age, disease-related working duration, process of disease occurrence, type of enterprises, etc.
RESULTS
Men accounted for 75.6 % (310 workers) of the approved cases. The most common age group was 30-39 years (n=143, 34.9 %). The mean disease-related working duration was 5.7 years, and the most commonly had a work-duration of 1-5 years (n=108, 36.0 %). The major industrial types of enterprise were manufacturing (235 workers, 57.3 %), transportation (46 workers, 11.2 %), and construction (25 workers, 6.1 %). Within the manufacturing industry, the most common was motor vehicles and trailers manufacturing. Within the group, the most common jobs were plant or machine operators and assemblers (129 workers, 36.5 %), elementary occupations (90 workers, 25.5 %), and craft and related trades workers (63 workers, 17.8 %). The majority of the diseases involved lumbar problems (232 cases, 54.7 %), neck and upper extremity diseases (183 cases, 43.2 %) and lower extremity diseases (9 cases, 2.1 %). In the cases of lumbar disease, the mean age and working duration was 36.5 years and 4.7 years, respectively. Fifty-four cases of lumbar diseases were due to repetitive work and 89 due to non-repetitive work. Bad posture at work was the most common cause for those doing repetitive work(23 cases), and lifting the most common cause of problems in the non-repetitive work cases (27).
CONCLUSIONS
We were able to elucidate the characteristics of workers with approved occupational musculoskeletal disease through this study. Many approved cases occurred in women, and workers performing repetitive work, of these herniated nucleus pulposus occurred in many workers performing simple repetitive works without serious external forces. This suggests that a prevention policy for occupational musculoskeletal disease must be established, to focusing on the above-mentioned high-risk groups.

Citations

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  • Effects of Physical Burden and Musculoskeletal Symptoms on Job Stress in Hospital Workers
    Dong-Hyun Kim, Yoo-Mi Chae, Hee-Kwang Kim
    Journal of the Korea Academia-Industrial cooperation Society.2014; 15(11): 6782.     CrossRef
  • Characteristics and Influencing Factors on Recuperators with Work-related Musculoskeletal Disorders
    Kyoo-Sang Kim, Hee-Gyeong Jeon, Day-Sung Kim
    Journal of the Ergonomics Society of Korea.2012; 31(5): 671.     CrossRef
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Occupational Cancer in Korea in the 1990s
Seong Kyu Kang, Yeon Soon Ahn, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 2001;13(4):351-359.   Published online December 31, 2001
DOI: https://doi.org/10.35371/kjoem.2001.13.4.351
AbstractAbstract PDF
The proportion of cancer as a cause of death in Korean has been continuously increasing. In 2000, 24 %(59,020 of 247,346) of deaths were caused by cancer. Occupational exposure would have contributed to the development of some cancers. It would have accounted for more than 2,000 cancers in a year if 4% of all cancer or 10% of lung cancer was regarded as arising from the work environment. However, occupational cancer has not been reported as much as expected. The first case of occupational cancer reported officially was mesothelioma caused by asbestos exposure at an asbestos textile industry in 1992. Following the report, many cases of occupational cancers have been reported such as lung cancer due to exposure to asbestos, chromium, exhaust gases, coke oven emissions, and silica, as well as leukemia due to exposure to benzene or other solvent and bladder cancer arising from exposure to benzidine salts. The Health Examination for retirees has been conducted since 1992 in order to detect occupational cancer early in workers who have been exposed to 11 carcinogenic substances. However, to date no occupational cancer has been detected through the Retirees' Health Examination. The Korea Labor Welfare Corporation(KLWC) has referred 108 claims for occupational cancer to the Korea Occupational Safety and Health Agency(KOSHA) between 1992 and 2000. Thirty-three cases were accepted, including 14 cases of lung cancer, eight cases of hematopoietic cancer and six cases of mesothelioma. KLWC has accepted the claim for primary lung cancer developed with pneumoconiosis as an occupational cancer, of which there were 31 cases in 1999 and 61 cases in 2000. In conclusion, special attention is required to detect occupational cancer due to their long latency period and the fact they are usually found after retirement.

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  • Cooking oil fume exposure and Lung-RADS distribution among school cafeteria workers of South Korea
    Minjun Kim, Yangho Kim, A Ram Kim, Woon Jung Kwon, Soyeoun Lim, Woojin Kim, Cheolin Yoo
    Annals of Occupational and Environmental Medicine.2024;[Epub]     CrossRef
  • Gastric and rectal cancers in workers exposed to asbestos: a case series
    Byeong Ju Choi, Saerom Lee, Iu Jin Lee, Soon Woo Park, Sanggil Lee
    Annals of Occupational and Environmental Medicine.2020;[Epub]     CrossRef
  • Compensation for Occupational Cancer
    Inah Kim, Eun-A Kim, Jae Young Kim
    Journal of Korean Medical Science.2014; 29(Suppl): S40.     CrossRef
  • A study of the status of exposure to polycyclic aromatic hydrocarbons (PAHs) in relation to its metabolites among workers in a Korean chemical factory
    Kwan Lee, Hyun-Sul Lim, Heon Kim
    Ciência & Saúde Coletiva.2014; 19(12): 4809.     CrossRef
  • Selection of Candidate Materials and their Prioritization for Chronic Inhalation and Carcinogenicity Test
    Kyung-Taek Rim, Cheol-Hong Lim, Byung-Joon Ahn
    Journal of Korean Society of Occupational and Environmental Hygiene.2014; 24(4): 587.     CrossRef
  • Compensation for Work-Related Hematologic, Liver, and Infectious Diseases
    Jung-Won Kim, Dong-Mug Kang
    Journal of Korean Medical Science.2014; 29(Suppl): S66.     CrossRef
  • Epidemiologic Characteristics of Compensated Occupational Lung Cancers among Korean Workers
    Yeon-Soon Ahn, Kyoung Sook Jeong
    Journal of Korean Medical Science.2014; 29(11): 1473.     CrossRef
  • Historical review of the List of Occupational Diseases recommended by the International Labour organization (ILO)
    Eun-A Kim, Seong-Kyu Kang
    Annals of Occupational and Environmental Medicine.2013;[Epub]     CrossRef
  • Occupational Cancers with Chemical Exposure and their Prevention in Korea: A Literature Review
    Kyung-Taek Rim
    Asian Pacific Journal of Cancer Prevention.2013; 14(6): 3379.     CrossRef
  • Occupational Diseases in Korea
    Seong-Kyu Kang, Eun A Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S4.     CrossRef
  • Occupational Burden of Cancer in Korea
    Eun-A Kim, Hye-Eun Lee, Seong-Kyu Kang
    Safety and Health at Work.2010; 1(1): 61.     CrossRef
  • Occupational Lymphohematopoietic Cancer in Korea
    Eun-A Kim, Won Jin Lee, Mia Son, Seong-Kyu Kang
    Journal of Korean Medical Science.2010; 25(Suppl): S99.     CrossRef
  • Occupational Respiratory Cancer in Korea
    Hye-Eun Lee, Hyoung Ryoul Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S94.     CrossRef
  • Asbestos-related Occupational Cancers Compensated under the Industrial Accident Compensation Insurance in Korea
    Yeon-Soon AHN, Seong-Kyu KANG
    Industrial Health.2009; 47(2): 113.     CrossRef
  • Occupational exposure to benzene in South Korea
    Seong-Kyu Kang, Mi-Young Lee, Tae-Kyun Kim, Jeong-Oh Lee, Yeon Soon Ahn
    Chemico-Biological Interactions.2005; 153-154: 65.     CrossRef
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Analysis of Occupational Disease by Approved Korea Labor Welfare Corporation in 1999
Yeon Soon Ahn, Seong Kyu Kang, Hyun Gil Kwon, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 2001;13(4):449-460.   Published online December 31, 2001
DOI: https://doi.org/10.35371/kjoem.2001.13.4.449
AbstractAbstract PDF
OBJECTIVES
The purpose of this study is to analyze the characteristics of occupational diseases listed by Korea Labor Welfare Corporation(KLWC).
METHODS
Using the database of the KLWC, we collected 575 approved occupational disease cases occurring between 1 January and 31 December 1999 and approved by the thirtieth June in 2000. We investigated the characteristics(sex, age, occupational history, kinds of occupational disease, exposure material, type of enterprises, etc.) of occupational disease using a mail survey and telephone interviews.
RESULTS
Men accounted for 88.9 %(511 workers) of the approved cases. 56 cases(9.7%) died of occupational disease. The most common age group was 50~59 years of age(n=217, 37.7 %). The proportion of workers with grater than ten years disease related working condition exposure were 195(49.0 %). The majority of diseases were respiratory problems(211 workers, 22.4 %), occupational hearing loss(149 workers, 25.9 %), infectious disease(69 workers, 12.0 %), intoxication(60 workers, 10.4 %), skin disease(29 workers, 5.0 %) and cancer(17 workers, 3.0 %). The causal hazardous agents were dusts(209 cases, 36.3 %), physical agents(157 cases, 27.3 %), chemical agents(89 cases, 16.3 %), biological agents(82 cases, 14.3 %) and workrelated agents(34 cases, 5.9 %). The major types of enterprise were manufacturing(262 workers, 45.6 %), mining and quarrying(174 workers, 30.3 %), public administration(42 workers, 7.3 %) and the health care industry(28 workers, 4.9 %). The kinds of job included craft and related trades workers(285 workers, 49.6 %), plant or machine operators and assemblers(139 workers, 24.2 %), elementary occupations(72 workers, 12.5 %) and professionals(28 workers, 4.9 %).
CONCLUSIONS
We were able to elucidate the kinds of occupational disease and the characteristics of workers through this study. Many approved cases occurred among nonmanufacturing and non-mining workers and the kinds of disease were varied. This suggests that management policy must be established to prevent occupational disease occurring among workers in the above type of industries.

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  • Work-related burn injuries and claims for post-traumatic stress disorder in Korea
    Kang Soo Lee, So Young Joo, Cheong Hoon Seo, Joo-Eon Park, Boung Chul Lee
    Burns.2019; 45(2): 461.     CrossRef
  • (A)Study on the relationship between back pain experiences of Japanese employees with spinal disorder and body Musculoskeletal disorder
    Han-Suk Jung, Hajime Tanabe, Toshifumi Kuwaoka, Minae Amano, Yasushi Onodera, Takashi Inouchi, Yuichi Imoto, Keiichi Tanabe
    Journal of the Korea Safety Management and Science.2015; 17(2): 107.     CrossRef
  • Work-related infectious diseases among Korean workers compensated under the Industrial Accident Compensation Insurance Law, 2006–2011
    Jun-Pyo Myong, Yeon-Soon Ahn, Hyoung-Ryoul Kim, Youn Jeong Kim, Chung Yill Park, Jung-Wan Koo
    International Journal of Occupational and Environmental Health.2013; 19(4): 344.     CrossRef
  • Characteristics and Influencing Factors on Recuperators with Work-related Musculoskeletal Disorders
    Kyoo-Sang Kim, Hee-Gyeong Jeon, Day-Sung Kim
    Journal of the Ergonomics Society of Korea.2012; 31(5): 671.     CrossRef
  • Occupational Hepatic Disorders in Korea
    Hyoung Ryoul Kim, Tae Woo Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S36.     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 Psychiatric Disorders in Korea
    Kyeong-Sook Choi, Seong-Kyu Kang
    Journal of Korean Medical Science.2010; 25(Suppl): S87.     CrossRef
  • Occupational Lymphohematopoietic Cancer in Korea
    Eun-A Kim, Won Jin Lee, Mia Son, Seong-Kyu Kang
    Journal of Korean Medical Science.2010; 25(Suppl): S99.     CrossRef
  • Occupational Respiratory Cancer in Korea
    Hye-Eun Lee, Hyoung Ryoul Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S94.     CrossRef
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Influence of Shiftwork Duration on Blood Pressure and Heart Rate Variability in Short Rotating 8-hour Shiftworkers
Mi Na Ha, Jai Young Kim, Jung Sun Park, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 2001;13(2):180-189.   Published online June 30, 2001
DOI: https://doi.org/10.35371/kjoem.2001.13.2.180
AbstractAbstract PDF
OBJECTIVES
This study was performed to investigate the chronic health effect of shiftwork on cardiovascular system.
METHODS
We checked blood pressure(BP) and heart rate variability(HRV) at every shift on 134 male workers whose shift type was 8-hour and short rotating of 3 days shift interval. As confoundings, job stress was measured by Karasek's JCQ 49 items questionnaire and circardian type was assessed by morningness-eveningness questionnaire. Smoking and alcohol drinking habit, marital status and past medical history were also acquired. We used the method of repeated measured data analysis with mixed model to show the association between shiftwork duration and BP or HRV.
RESULTS
Average age of workers was 29 years olds(range 25~44). Among them, 77.9 % were current smokers, 50 % were the passive type of job strain in Karasek's model. Mean shiftwork duration was 5.21 years(range 5.4 months~10 years). In circadian type, no one was definitely morning type or definitely evening type. In multivariate analyses adjusted by age, job strain, shift, circadian rhythm and smoking, blood pressure were showed significantly increasing trends according to shiftwork duration in both systolic and diastolic(p<0.05). Heart rate variability were also showed significantly decreasing trends according to shiftwork duration in both parasympathetic and sympathetic functions(p<0.05).
CONCLUSIONS
The results of this studs suggests the chronic negative health effect of shiftwork on cardiovascular system.

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  • Association between serum ferritin and hypertension according to the working type in Korean men: the fifth Korean National Health and nutrition examination survey 2010–2012
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    Annals of Occupational and Environmental Medicine.2018;[Epub]     CrossRef
  • Effect of shift work on hypertension: cross sectional study
    Jeong Han Yeom, Chang Sun Sim, Jiho Lee, Seok Hyeon Yun, Sang Jin Park, Cheol-In Yoo, Joo Hyun Sung
    Annals of Occupational and Environmental Medicine.2017;[Epub]     CrossRef
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    Han-Ki Shin, Jong-Ho Kang
    Journal of the Korean Society of Physical Medicine.2016; 11(1): 107.     CrossRef
  • Effect of working patterns on eating habits in manufacturing workers of Gwangju area
    Ji-Suk Yim, Young-Ran Heo, Eun Jeong, Jae-Joon Lee
    Journal of Nutrition and Health.2016; 49(6): 495.     CrossRef
  • The Effect of the Physical Therapy Treatment Room Environment Using Microwave Diathermy on the Autonomic Nervous System of Human Body
    Han-Ki Shin, Tae-Kyu Lee, Je-Yoon Jun, Ju-Seung Kim, Jong-Ho Kang
    Journal of the Korean Society of Physical Medicine.2015; 10(1): 37.     CrossRef
  • Occupational Stress of Women Workers in Service Industries depending on Their Working Conditions
    Su-Jin Kwak, Hye-Sun Jung
    Korean Journal of Occupational Health Nursing.2014; 23(2): 89.     CrossRef
  • The Relationship between Anxiety, Depression and 24-hour Ambulatory Blood Pressure in Hotel Employees
    Jun-Ho Bae, Jeong-Kyu SaKong, Sang-Kyu Kim
    Journal of agricultural medicine and community health.2011; 36(3): 157.     CrossRef
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The Prediction Model of the Number of Industrial Injured Persons Using Data Mining
Kwan Hyung Yi, Ho Keun Chung, Jung Sun Park
Korean Journal of Occupational and Environmental Medicine 2000;12(4):515-523.   Published online December 31, 2000
DOI: https://doi.org/10.35371/kjoem.2000.12.4.515
AbstractAbstract PDF
OBJECTIVES
This study is to see the transition and pattern of the industrial iureal worker, and to develop the prediction model.
METHODS
The data of the study are based on the samples from data-warehouse of Occupational Safety & Health Research Institute and are summed monthly from Jan 1986 to Dec 1999. This study data used data mart and Meta data from DW in KOSHA. The prediction model of the injured worker in Industry is designed by using a winters time series method after data preparing (i. e. sample, explore, modify) from DW.
RESULTS
Thls predicted model obtained Winters-method multiplicative in exponential smoothing among applied all models, after the tlme series (total 163 months). It showed that the prediction power was 95.5 %.
CONCLUSIONS
In the process of exploring the data, totally the rate of industrial injureal workers reduced, and in the yearly circulation, in February and September the number is the lowest but in June, July, October and November the higher. The number of monthly average injureal workers is 8709 (95 % confidence interval 8277, 9140). From the developed prediction model, since Aug 1999 the industrial injureal worker reduced rapidly in Dec 1999 and first period of 2000. But In second period of 2000 the number of the injured workers is increasing. To conclude, as the total economic situation is becoming better in 2000 than In 1999, its is supposed that the injured workers will increase more than the predictive injured workers because of the increase of production rate and labor force.

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  • Occupational accident prediction modeling and analysis using SHAP
    Hyung-Rok Oh, Ae-Lin Son, ZoonKy Lee
    Journal of Digital Contents Society.2021; 22(7): 1115.     CrossRef
  • Prediction of Daily Patient Numbers for a Regional Emergency Medical Center using Time Series Analysis
    Hye Jin Kam, Jin Ok Sung, Rae Woong Park
    Healthcare Informatics Research.2010; 16(3): 158.     CrossRef
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Analysis of Claimed Cases as an Occupational Disease at Korea Occupational Safety and Health Agency from 1992 to 1999
Seong Kyu Kang, Kyoo Sang Kim, Yangho Kim, Jung Keun Choi, Yeon Soon Ahn, Yeong Woo Jin, Byong Soon Choi, Jeong Sun Yang, Euna Kim, Chang Ho Chae, Yong Hue Choi, Dae Seong Kim, Jung Sun Park, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 2000;12(2):292-301.   Published online June 30, 2000
DOI: https://doi.org/10.35371/kjoem.2000.12.2.292
AbstractAbstract PDF
OBJECTIVES
Pneumoconisis and noise-induced hearing loss(NIHL) have been reported as main occupational diseases by the Special Health Examination. The Industrial Accident Compensation Insurance has reported various work-related diseases, however, these two diseases occupied almost a half of compensated cases. Therefore, it was not well known about the status of occupational diseases other than pneumoconiosis, NIHL, and cardiocerebrovascular accident(CVA). This study was conducted to analyze claimed cases as an occupational disease, that was requested to the Korea Industrial Safety and Health Agency (KOSHA).
METHODS
The local office of the Korea Labor Welfare Corporation(KLWC) has asked the KOSHA for confirmation of claimed cases as an occupational disease. We analyzed 379 cases requested from KLWC, the Ministry of Labor, employers, unions and occupational health agencies from 1992 to 1999.
RESULTS
Male was 80. 7 % of the requested cases. Their mean age was 42 years old and 75. 5 % of them were more than 35 years old. The requested cases were increased rapidly from 25 cases in 1992 to 108 cases in 1999 and the accept rate was 50. 7 %. The majority of requested cases were respiratory diseases(22.4 %), cancers(18.5 %), Neuropsychiatric problems (14. 5 %), and musculoskeletal problems (13. 5 %). The accept rate was high in reproductive, respiratory, musculoskeletal and digestive disorders and low in neuropsychiatric, renal and otologic problems and occupational cancers. 73. 6 % of them were caused by chemical agents, especially 28. 5 % were by organic solvents. 67 % of them were clinically confirmed at university hospitals. A half of the cases were from KyongIn area, even the request came from the whole country.
CONCLUSIONS
A claim was common in workers whose age was over 35 years old and exposure history was over 10 years. The respiratory diseases and neuropsychiatric disorders were still main problems in occupational health and occupational cancers was increasing even though its accept rate was not high yet.

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    Byeong Ju Choi, Saerom Lee, Iu Jin Lee, Soon Woo Park, Sanggil Lee
    Annals of Occupational and Environmental Medicine.2020;[Epub]     CrossRef
  • Systemic sclerosis due to crystalline silica exposure among jewelry workers in Korea: two case reports
    Jae Yoon Kim, Sang Yoon Do, Young Hoon Moon, Chul Gab Lee, Yun Sung Kim, Byung Soon Choi, Eun-A Kim, Han Soo Song
    Annals of Occupational and Environmental Medicine.2017;[Epub]     CrossRef
  • Characteristics and Influencing Factors on Recuperators with Work-related Musculoskeletal Disorders
    Kyoo-Sang Kim, Hee-Gyeong Jeon, Day-Sung Kim
    Journal of the Ergonomics Society of Korea.2012; 31(5): 671.     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
  • Occupational Diseases in Korea
    Seong-Kyu Kang, Eun A Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S4.     CrossRef
  • Occupational Lymphohematopoietic Cancer in Korea
    Eun-A Kim, Won Jin Lee, Mia Son, Seong-Kyu Kang
    Journal of Korean Medical Science.2010; 25(Suppl): S99.     CrossRef
  • Occupational exposure to benzene in South Korea
    Seong-Kyu Kang, Mi-Young Lee, Tae-Kyun Kim, Jeong-Oh Lee, Yeon Soon Ahn
    Chemico-Biological Interactions.2005; 153-154: 65.     CrossRef
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An Analysis of Industrial Accidents in an Automobile Factory
Kyung Jong Lee, Jae Beom Park, Ho Keun Chung, Jong Goo Kim
Korean Journal of Occupational and Environmental Medicine 2000;12(1):119-127.   Published online March 31, 2000
DOI: https://doi.org/10.35371/kjoem.2000.12.1.119
AbstractAbstract PDF
OBJECTIVES
To know the present conditions of industrial accidents in automobile factories in Korea and make the basic materials essential to prevention of industrial accidents METHODS: We reviewed and analyzed the records of industrial accidents occurred in an automobile factory in 1997 by time of occurrence, job categories(fixed production, skilled trades, mechanical material handling, and clerical 8r technical), type of injury, kind of accident, and location of injury.
RESULTS
1. By age groups, the accident rate was the highest in age 45-49(1.6 %o) followed by age 35-39(1.3 %), 40-44(0.9 %), 30-34(0.9 %), 25-29(0.6 %), and 20-24(0.4 %) and by working duration, it was highest in group of experience over 25 years, and so we could see that the more age or working duration increases the more accident rate increases. 2. By work time, the accident rate was the highest in 10-11 a.m. (21.4 %) followed by 2-3 p.m. (17.9%). By the day of the week, it was as follows, Friday(20.5%) Wednesday (17. 9%), Monday (16. 2 %), Thesday (15. 4 %), Saturday (12. 0 %), Thursday(11.1 %), Sunday(6.8 %) in order. By the month, it was high in May(17.9 %), March(11.1 %), and April(11.1 %) followed by August(10.3 %) and January(9.4 %), so we could see it was high in spring. 3. The most frequent injury was in the back by 41.0 % followed by 17 cases in fingers(14.5 %), legs(9.4 %), hands(7.7 %), head(6.0 %) in order. And by the type of injuries, the sprain was most frequent by 38. 5% followed by fracture(22. 2 %, lumbar HNP(11.1 %), and contusion(9.4 %) in order. The causes of accident were handling heavy materials(34.2 %), upset(17.1 %), stenosis(16.2 %), and falling(6.8 %) in order.
CONCLUSIONS
By the above results, to prevent the industrial accidents in automobile factories in Korea, preventive activities for handling heavy materials and back injury, and continuous industrial education are necessary.

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Analysis of Korean Analytical Quality Assurance Program for the Special Health Examination from 1995 to 1999
Seong Kyu Kang, Jeong Sun Yang, Mi Young Lee, In Jeong Park, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 2000;12(1):139-147.   Published online March 31, 2000
DOI: https://doi.org/10.35371/kjoem.2000.12.1.139
AbstractAbstract PDF
OBJECTIVE: The accuracy of analytical results of blood and urine heavy metals came out to the main issue on occupational health from late eighties. The discrepancy of the results for same samples from different laboratories made the diagnosis for occupational diseases be unreliable. Therefore, a quality control program for analysis of samples taken from workplace had been introduced in Korea since 1992. This study aims to show the quality control program f'or analysis of blood and urine samples and its proficient rates from 1992 to 1999 and to know how they have been being used in occupational health.
METHODS
The quality control program runs twice a year with mandatory items of blood lead and urine hippuvic acid and voluntary items of blood cadmium and manganese and urine mandellic acid and methyl hippuric acid. Participant laboratories are receiving three levels for each items and two out of three samples have to be qualified for being a proficient laboratory for the item. The acceptable range of blood lead and urine hippuric acid is +/-15% and that of the others is within 3 SD(standard deviation) from the reference values.
RESULTS
The proficient rates of blood lead and urine hippuric acid was 89%, 90%, repectively, however those of the other voluntary items have been from 51% to 62%. The proficient rates of urine mercury and urine N-methylformamide(NMF), which are introduced since 1999, were very poor. Urine hippuric acid and blood lead were analyzed frequently for the purpose of biological monitoring conducting by special health examination organizations. Urine and blood manganese and urine metabolites of trichloroethylene, urine phenol, methylhippuric acid and cadmium were followed.
CONCLUSIONS
In conclusion, the quality control program for biological monitoring has dramatically improve the ability of analysing blood and urine samples and eventually contributes to diagnose occupational diseases and to prevent occupational poisoning. However, some biological monitoring data, such as urine manganese, mercury and NMF, have been still reported from laboratories that were not accepted as a proficient laboratory.

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  • External Quality Assessment Scheme for Biological Monitoring of Occupational Exposure to Toxic Chemicals
    Mi-Young Lee, Jeong Sun Yang, Seong-Kyu Kang
    Safety and Health at Work.2011; 2(3): 229.     CrossRef
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Health Effects of Aircraft Noise on Residents Living Near an Airport
Kyung Jong Lee, Jae Beom Park, Jae Yeon Jang, Sun Mi Cho, Se Wi Lee, Jong Goo Kim, Soon Young Lee, Jong Ja Kwak, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1999;11(4):534-545.   Published online December 31, 1999
DOI: https://doi.org/10.35371/kjoem.1999.11.4.534
AbstractAbstract PDF
Objectives
; This study was conducted to reveal the health effects of aircraft noise on the residents live near the military airport.
METHODS
We sampled systematically 87 residents as the high exposed group, 58 residents as the low exposed group according to the geographical distance from the airport. We also sampled 67 residents as the control group lived far from the airport. Noise levels were measured for conform the exposures. Self-administered questionnaires for symptoms, air conduction hearing threshold level, blood pressure blood cholesterol with health examinations, and SCL-90-R were introduced to get the data from the residents.
RESULTS
The Ld/n at the area near the airport was 72.4 dB, however that of control area was 67. 7 dB. The value of pure tone average, high pure tone average, and threshold of 4,000 Hz were decreased with exposure level significantly. Linear regression analysis showed that the noise exposure level of the airport was related to the hearing threshold at pure tone average, threshold of 4,000 Hz, and high pure tone average. The systemic and diastolic blood pressure showed dose-response relationship with noise exposure. The prevalence of hypertension was higher in exposed group, but not statistically significant. In linear regression, noise level was related to systolic and diastolic blood pressure with other variables such as age, sex, BMI (Body Mass Index), and family history of hypertension. SCL-90-R showed that exposed group had higher score significantly in neurotic and psychologic variable and felt the various somatic symptoms.
CONCLUSIONS
These results suggest that aircraft noise would influence hearing loss at low frequencies as well as 4,000 Hz and higher frequencies, systolic and diastolic blood pressure, and psychological response.

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  • Influence of noise exposure on cardiocerebrovascular disease in Korea
    Myoungjin Oh, Kwangsoo Shin, Kyungah Kim, Jungwoo Shin
    Science of The Total Environment.2019; 651: 1867.     CrossRef
  • Study on the Health Status of the Residents near Military Airbases in Pyeongtaek City
    Hyunjoo Kim, Sangchul Roh, Ho-Jang Kwon, Ki Chung Paik, Moo-Yong Rhee, Jae-Yun Jeong, Myung Ho Lim, Mi-Jin Koo, Chang-Hoon Kim, Hae Young Kim, Jeong-Hun Lim, Dong-Hyun Kim
    Journal of Preventive Medicine and Public Health.2008; 41(5): 307.     CrossRef
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Pneumoconiosis with Workers of Manufacturing Industry in Incheon
Yeon Soon Ahn, Kyoo Sang Kim, Ho Keun Chung, Il Soon Whang, Jaehoon Roh
Korean Journal of Occupational and Environmental Medicine 1997;9(4):589-603.   Published online December 31, 1997
DOI: https://doi.org/10.35371/kjoem.1997.9.4.589
AbstractAbstract PDF
Most of pneumoconiosis found in Korea can be categorized in coal worker's pneumoconiosis. However, in recent years, pneumoconiosis has been frequently found in the workers of manufacturing factories. Accordingly, this study was carried out to investigate relationship of dust exposure history and development and progress of pneumoconiosis. Chest radiographs, history of dust exposure, and other data of 144 workers, who were diagnosed as suspecter pneumoconiosis (0/l) or pneumoconiosis in special health examination center in Incheon from 1986 to 1996, were reviewed. The results were as follows ; 1. According to the type of main exposure, most common type of exposure was foundry dust(93workers, 64.6%), followed by welding fume(16workers, 11.1%), talc dust, lime dust and etc. 2. Among 144 workers, the history of dust exposure was investigated in 86 workers. Mean ages of 86 workers at the present study, initial exposure to the dusts, and at the time of initial diagnosis as having pneumoconiosis were 52.1, 29.1 and 46.5 years, respectively. The mean duration of exposure was 17.3 years. 3. Comparing the type of main exposure with dust exposure history, initially exposed age of welders, foundry workers, workers exposed to coal dust and other dusts were 24.6, 30.7, 28.0 and 28.5 years, respectively. Ages at the time of diagnosis as having pneumoconiosis of welders, foundry workers, coal dust and other dusts were 41.3, 49.3, 46.4 and 44.1 years, respectively. The duration of exposure to main dust of welders, foundry workers, workers exposed to coal dust and other dusts were 16.8, 18.2, 13.3 and 11.6 years, respectively. Therefore initially exposed age was significant difference between the welders and the foundry workers (p<.05). Age which was diagnosed pneumoconiosis was significant difference between the welders, workers exposed to other dusts and the foundry workers (p<.01). And exposure duration of main dust was significant difference between the workers exposed to other dusts and foundry workers (p<.01) 4. Initially diagnosed X-ray category of the workers were category 0/l (76workers, 52.8%), 1/0 (35workers, 24.3%) Therefore, workers' pneumoconiosis of manufacturing factories was mild, relatively. And there was no significant difference between initially diagnosed X-ray category of the workers and dust exposure history. 5. Among 97 workers, who could follow up more than 1 year, 60 workers(61.9%) were not changed, 24 workers (24.7%) were progressed, 13 workers (13.4%) were improved in their initially diagnosed X-ray category. Among 11 welders, initially diagnosed X-ray category of 5 welders(45.5%) were improved and of only 1 welder was progressed. But, among 19 workers exposed to other dusts, 10 (52.6%) workers were progressed and none of them were improved. 6. Among 53 workers, who were Initially diagnosed X-ray category was 0/l, 12 workers (22.6%) were progressed and 5 workers (9.4%) were improved in their initially diagnosed X-ray category. And among 40 workers, who were initially diagnosed X-ray category was 1, 12 workers(30.0%) were progressed and 7 workers(17.5%) were improved. Above results suggest that not a few workers of manufacturing factories have pneumoconiosis and their pneumoconiosis is progressed. Therefore, we have to prepare management plan and to study epidemiologic findings of pneumoconiosis with workers of manufacturing factories.

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  • Cause-Specific Mortality Due to Malignant and Non-Malignant Disease in Korean Foundry Workers
    Jin-Ha Yoon, Yeon-Soon Ahn, Suminori Akiba
    PLoS ONE.2014; 9(2): e88264.     CrossRef
  • Occupational Diseases in Korea
    Seong-Kyu Kang, Eun A Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S4.     CrossRef
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Reading Agreement of Pneumoconiosis on Simple Chest Films
Byung Soon Choi, Jung Gi Im, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1997;9(3):411-429.   Published online October 31, 1997
DOI: https://doi.org/10.35371/kjoem.1997.9.3.411
AbstractAbstract PDF
No abstract available.

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Development of Physiologically Based Pharmacokinetic Model for Several Volatile Organic Compounds
Jae Yeon Jang, Kyung Jong Lee, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1997;9(2):357-377.   Published online June 30, 1997
DOI: https://doi.org/10.35371/kjoem.1997.9.2.357
AbstractAbstract PDF
Recently physiologically based pharmacokinetic (PB-PK) model has important role in industrial and environmental health. One of problem in application of PB-PK models is that they have uncertainties that is due to different input parameters according to authors. In order to develope a PB-PK model that hag good validity, the effect of several input parameters on simulation results was studies. Chemicals studied were perchloroethylene, toluene and styrene. Simulation of alveolar concentration, blood concentration and urinary metabolites was performed for three solvents, respectively. Input parameters discusses were physiological parameters, metabolic parameters and partition coefficient of chemicals. By comparing simulation results according to several pairs of parameters with experimental data, input parameters that showed best fit were decided.

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Reactive Airways Dysfunction Syndrome (RADS) Due to Chlorine Gas Exposure
Kyung Jong Lee, Yi Hyeong Lee, Jae Bum Park, Kwang Ho Kim, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1997;9(1):12-16.   Published online February 28, 1997
DOI: https://doi.org/10.35371/kjoem.1997.9.1.12
AbstractAbstract PDF
Reactive airways dysfunction syndrome (RADS) is a syndrome as a persistent bronchial hyperreactivity with asthmatic dyspnea which occurs after one or more inhalation exposures to a high concentration of irritant gasses, smokes or vapors in subjects who had preciously had no respiratory disease. We report a case of a 34 years old female worker suffering from reactive airways dysfunction syndrome who had been taking charge of guest room cleaning at a condominium. 7 months before, she inhaled high concentration of chlorine gas in confined and poor ventilated working space of bathroom at the condominium. As she was washing a bathroom with a bleaching agent (6 % sodium hypochlorite) without dilution, dyspnea, dizziness, headache, nausea, and coughing developed after work. She still suffer from dyspnea and coughing. All functional tests were normal except for methacholine challenge test which reveals bronchial hyperreactivity. She has some symptoms of dyspnea and coughing when exposed to perfume, cold air, and heavy work.

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Effect of Fibronectin on the Production of Nitric Oxide from Murine Peritoneal Macrophages
Bong Seok Kim, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1996;8(3):423-433.   Published online December 31, 1996
DOI: https://doi.org/10.35371/kjoem.1996.8.3.423
AbstractAbstract PDF
No abstract available.

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Assessment of Occupational Exposure to Cadmium in Korea
Seong Kyu Kang, Jeong Pyo Hong, Ki Woong Kim, Jae Yeon Jang, Ho Keun Chung, Kyou Chull Chung
Korean Journal of Occupational and Environmental Medicine 1994;6(2):252-258.   Published online September 30, 1994
DOI: https://doi.org/10.35371/kjoem.1994.6.2.252
AbstractAbstract PDF
Twenty-four factories registered at the Ministry of Labor as factories using or producing cadmium in 1991 were investigated to know the present state of occupational exposure to cadmium in 1992. Nine factories among 24 stopped using or changed to other substances and 1 factory didn't produce any more, but delivered it to other factories through imports. Therefore, only 14 factories were producing or using cadmium. But, alloying materials were uspplied to about 20 and more factories, however, they couldn't be investigated because of limited information. Three factories had less than 50 workers were 3, 6 had 50-300 and 5 had more than 300. About 167 workers were exposed to cadmium. According to the classification by process, there were 4 alloy processes, 2 refinary, 2 elctroplating, 2 dry cell making, 1 industrial battery and 1 copper refinary. 8 factories used metal cadmium, 3 cadmium oxide, 2 cadmium sulfide, and 1 cadmium hyroxide. One factory was importing cadmium stearates only and supplying them to the PVC making factories. The amount of metal cadmium producing in 2 refinary factories was about 50-65 ton per month. The other cadmium compounds were imported. According to exposure level of cadmium in air of the 10 factories examined, each factory could be divided into high, moderate and low exposure groups. 1 battery recycling factory and 3 alloy factories were in the high exposure group and their mean air concentrations were 0.06679, 0.05481, 0.02492, and 0.003mg/m3, respectively. Refinary and industrial battery making factories were in the middle exposure group and their mean air concentrations were 0.00773 and 0.00613 mg/m3, respectively. Finally, low exposure group were copper smelting, dry cell case making, duplicator drum making and electroplating factory and their mean air concentrations were 0.00096, 0.00071, 0.00057 and 0.00054 mg/m3 respectively.

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  • Chronic Cadmium Intoxication and Renal Injury Among Workers of a Small-scale Silver Soldering Company
    Won-Jun Choi, Seong-Kyu Kang, Seunghon Ham, Wookyung Chung, Ae Jin Kim, Myunghee Kang
    Safety and Health at Work.2020; 11(2): 235.     CrossRef
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    Hyun Chan An, Joo Hyun Sung, Jiho Lee, Chang Sun Sim, Sang Hoon Kim, Yangho Kim
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Styrene in Air and Blood and Mandelic acid in Urine in the Workers exposed to Styrene
Ho Keun Chung, Seong Kyu Kang, Jeong Sun Yang, Ki Woong Kim, Jong Seong Lee, Young Sook Cho, In Jeong Park
Korean Journal of Occupational and Environmental Medicine 1994;6(1):113-121.   Published online February 28, 1994
DOI: https://doi.org/10.35371/kjoem.1994.6.1.113
AbstractAbstract PDF
The concentration of styrene in air and in blood and mandelic acid in urine were checked for the 60 workers with normal liver function, exposed to styrene. Styrene in air were sampled with personal air sampler at least 4 hours and analyzed by gas chromatography. Blood and spot urine were collected at the end of shift with a vacuum tube and a plyethylene bottle and analyzed by has chromatography and high performance liquid chromatography. Means of air and blood styrene and urine mandelic acid were 8.16 ppm (geometric mean), 0.199 mg/L, and 0.519 g/g creatinine, respectively. The concentration of styrene in air and mandelic acid in urine were high in the FRP factories and low in polymerization factory. Styrene in blood showed large difference by the working process. Styrene in air showed a good correlation with mandelic acid in urine(r=0.6369) and styrene in blood(r=0.6371). The mandelic acid in urine and styrene in blood corresponded to exposure of 50 ppm styrene were 0.890 g/g creatinine and 0.434 mg/L. However, hippuric acid in urine did not show any correlation with styrene in air. Urine mandelic acid excretion expected ratio showed a tendency to decrease according to obesity index and to increase with alcohol consumption.

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  • Evaluation of the Suitability of Establishing Biological Exposure Indices of Styrene
    Ah-rum Choi, Sung-guk Im, Mi-young Lee, Se-Hoon Lee
    Safety and Health at Work.2019; 10(1): 103.     CrossRef
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Workers' health status related working environments in small and medium sized industries
Kyoo Sang Kim, Jae Hoon Roh, Kyung Jong Lee, Ho Keun Chung, Young Hahn Moon
Korean Journal of Occupational and Environmental Medicine 1993;5(1):3-14.   Published online February 28, 1993
DOI: https://doi.org/10.35371/kjoem.1993.5.1.3
AbstractAbstract PDF
No abstract available.

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    Yunhee Kim
    Journal of Korean Society of Occupational and Environmental Hygiene.2016; 26(2): 198.     CrossRef
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    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
  • The Work Environment and Wearing Conditions of Industrial Protective Clothing in Shipbuilding Workshops
    Hyun-Sook Bae, Min-Young Kim
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  • Cancer Admission and Mortality in Workers Exposed to Ionizing Radiation in Korea
    Yeon-Soon Ahn, Robert M. Park, Dong-Hee Koh
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Evaluation of biological metabolites among the workers exposed todimethylformanide
Ho Keun Chung, Seong Kyu Kang, Kyung Yong Rhee, Jae Yeon Jang
Korean Journal of Occupational and Environmental Medicine 1992;4(2):144-150.   Published online October 31, 1992
DOI: https://doi.org/10.35371/kjoem.1992.4.2.144
AbstractAbstract PDF
No abstract available.

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  • Assessment of correlation between markers of ambient monitoring and biological monitoring of dimethylformamide for workers in synthetic leather manufacturing factories in Korea
    Yang In Hwang, Mi-Young Lee, Yun Kyung Chung, Eun A Kim
    Analytical Science and Technology.2013; 26(5): 315.     CrossRef
  • Clinical Outcomes of Occupational Exposure to N,N-Dimethylformamide: Perspectives from Experimental Toxicology
    Tae Hyun Kim, Sang Geon Kim
    Safety and Health at Work.2011; 2(2): 97.     CrossRef
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A case of demyelinating lesion in central nervous system due toorganic solvents
Seong Kyu Kang, Kyung Yong Rhee, Ho Keun Chung, Young Jin Lee
Korean Journal of Occupational and Environmental Medicine 1992;4(1):110-117.   Published online February 29, 1992
DOI: https://doi.org/10.35371/kjoem.1992.4.1.110
AbstractAbstract PDF
No abstract available.

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  • Occupational Diseases in Korea
    Seong-Kyu Kang, Eun A Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S4.     CrossRef
  • Occupational Neurological Disorders in Korea
    Eun-A Kim, Seong-Kyu Kang
    Journal of Korean Medical Science.2010; 25(Suppl): S26.     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
  • Neurobehavioral performance in workers exposed to toluene
    Seong-Kyu Kang, Diane S. Rohlman, Mi-Young Lee, Hye-Sil Lee, Soo-Young Chung, W. Kent Anger
    Environmental Toxicology and Pharmacology.2005; 19(3): 645.     CrossRef
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A study on the mortality of coal workers' pneumoconiosis by respiratory impairment
Kyung Yong Rhee, Seong Kyu Kang, Gwan Hyeong Yi, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1991;3(2):185-199.   Published online November 30, 1991
DOI: https://doi.org/10.35371/kjoem.1991.3.2.185
AbstractAbstract PDF
No abstract available.

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A study on the liver dysfunction due to dimethylformamide
Seong Kyu Kang, Jae Yeon Jang, Kyung Yong Rhee, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1991;3(1):58-64.   Published online February 28, 1991
DOI: https://doi.org/10.35371/kjoem.1991.3.1.58
AbstractAbstract PDF
No abstract available.

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    Kyung Ehi Zoh, Mijin Park, Domyung Paek
    Archives of Environmental & Occupational Health.2020; 75(3): 127.     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
  • Compensation for Work-Related Hematologic, Liver, and Infectious Diseases
    Jung-Won Kim, Dong-Mug Kang
    Journal of Korean Medical Science.2014; 29(Suppl): S66.     CrossRef
  • Assessment of correlation between markers of ambient monitoring and biological monitoring of dimethylformamide for workers in synthetic leather manufacturing factories in Korea
    Yang In Hwang, Mi-Young Lee, Yun Kyung Chung, Eun A Kim
    Analytical Science and Technology.2013; 26(5): 315.     CrossRef
  • Clinical Outcomes of Occupational Exposure to N,N-Dimethylformamide: Perspectives from Experimental Toxicology
    Tae Hyun Kim, Sang Geon Kim
    Safety and Health at Work.2011; 2(2): 97.     CrossRef
  • Occupational Diseases in Korea
    Seong-Kyu Kang, Eun A Kim
    Journal of Korean Medical Science.2010; 25(Suppl): S4.     CrossRef
  • Grand Rounds: An Outbreak of Toxic Hepatitis among Industrial Waste Disposal Workers
    Hae-Kwan Cheong, Eun A Kim, Jung-Keun Choi, Sung-Bong Choi, Jeong-Ill Suh, Dae Seob Choi, Jung Ran Kim
    Environmental Health Perspectives.2007; 115(1): 107.     CrossRef
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A Study on the Psychological Symptoms of Hospitalized Pneumoconiosis Patients: Comparison with pneumoconiosis Examinees, Coal Miners, and Other Manual Workers
Kyung Young Rhee, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1990;2(2):166-178.   Published online August 31, 1990
DOI: https://doi.org/10.35371/kjoem.1990.2.2.166
AbstractAbstract PDF
The purpose of this study was to investigate the effect of hospitalization and diagnosis of disease on the mental health of coal workers' pneumoconiosis patient. The study subjects were composed of four groups for comparison; hospitalized coal workers' pneumoconiosis, healthy coal miners, and railroad workers employed by government. About a hundred of respondents in each group were sampled by random. Mental health data were collected by symptom distress checklist 90 (SCL-90), and other characteristics were collected by interview with questionnaire administered trained interviewers in each respondents. Mental health dimension was classified into 9 dimensions; somatization, obsessive-compulsiveness, interpersonal sensitivity, depression, anxiety, hostality, phobic anxiety, paranoid, psychosis. And as total index, global severity index, positive symptoms total, positive symptom distress index were also computed. As a result there is difference of mean score of 9 symptom dimensions among four groups. The mean score of the examinees of depth diagnosis of the impressed coal workers' pneumoconiosis is the highest score in all 9 symptom dimensions. However in the hospitalized coal workers' pneumoconiosis scores of somatization, depression, anxiety, and phobic anxiety were still higher than that of healthy coal miners. And other symptom dimensions were not different from that of healthy coal miners.

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The Serum Alpha-antitrypsin Concentration of Coal Workers' Pneumoconiosis Patients
Bong Suk Cha, Ho Keun Chung, Jeong Pyo Hong
Korean Journal of Occupational and Environmental Medicine 1990;2(1):34-43.   Published online February 28, 1990
DOI: https://doi.org/10.35371/kjoem.1990.2.1.34
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This study was performed to investigate associations between serum alpha(1)-antitrypsin(AAT) concentration and radiological categories of coal workers' pneumoconlosis(CWP), between AAT concentration and pulmonary complications such as tuberculosis and emphysema, and to study associations between AAT concentration and FEV(1.0)% in CWP patients, We classified 254 CWP patients in D Hospital into categories of small opacity profusion. And we selected 86 subjects by with or without emphysematous finding in each categories by proportional stratified sampling method. Semm AAT concentrations were quantkated by single radial immunodiffusion method, and the findings of chest radiographs were evaluated by radilogist. The results were as follows: 1. Serum AAT concentrations were not significantly different among groups of radiological categories of small opacities. 2. Complication of emphysema was associated with smoking habits sigmficantlyl(chi square=12.16, p<0,01). And AAT concentraLion was higher in smokers and ex-smokers than in non-smokers. Serum AAT concentration was significantly higher in the cases with emphysema than in the cdses without emphybema{p<0.01). 3. Serum AAT concentration of the group with active pulmonary tuberculosis was significantly higher than with inactive or without: pulmonary tuberculosis group(p<0.1). 4. Serum AAT concentration of the group with low FEV(1.0)% was significantly higher than with high or normal group(p<0.05).

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Smoking Habit of Coal Workers' Pneumoconiosis Patients: Their Relationship to the Findings of Chest Radiographs
Jeong Pyo Hong, Ho Keun Chung
Korean Journal of Occupational and Environmental Medicine 1990;2(1):23-33.   Published online February 28, 1990
DOI: https://doi.org/10.35371/kjoem.1990.2.1.23
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No abstract available.

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A Study on Antinuclear Antibody and Rheumatoid Factor in Coal Worker's Pneumoconiosis
Ho Keun Chung, Pyo Hong Jeong
Korean Journal of Occupational and Environmental Medicine 1989;1(1):24-31.   Published online February 28, 1989
DOI: https://doi.org/10.35371/kjoem.1989.1.1.24
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Antinuclear antibody(ANA) and rheumatoid factor(RF) in the sera of 191 coal workers pneumoconiosis(CWP) patients, 65 healthy coal workers, and 52 non-mining controls were examined by the categories of CWP, age, duration of exposure, smoking and drinking habit. Indirect fluorescent antibody technique for ANA and latex agglutination method for RF were applied for detection. ANA was positive in 24.3% of CWP patients, 10.8% of healthy coal workers and 11.5% of non-mining controls. RF was positive in 36.5 % of CWP patients, 13.8 % of healthy coal workers and 9.6 % of non-mining controls.

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© Korean Society of Occupational & Environmental Medicine.
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