Annals of Occupational and Environmental Medicine

Sang Yong Oh

4 Articles

Factors Related to Occupational Injuries and Health Problems for Some Female Workers in Non-standard Employment: Woo Jin Park, Hyoung June Im, Jong Uk Won, Sang Baek Koh, Young Su Ju, Jae Hoon Roh, Sang Yong Oh, Young Jun Kwon, Chang Kook Hwang, Jung Wook Lim; Korean Journal of Occupational and Environmental Medicine 2009;21(4):301-313. Published online December 31, 2009; DOI: https://doi.org/10.35371/kjoem.2009.21.4.301

OBJECTIVES
The purpose of this study was to examine certain factors associated with occupational injuries and health problems for some female workers in non-standard employment.
METHODS
We enrolled 754 female workers that were selected from 1,040 people who had agreed to be surveyed as part of a group or company in either the Seoul and the Kyonggi area. We performed univariate logistic regression on survey data and again performed multivariate logistic regression on those variables that were statistically significant.
RESULTS
In this study, the overall incidence of occupational injury for all workers was 12.5%. The incidence rates by position were as follows: 12.9%(insurance saleswoman), 7.4%(telemarketer), 9.2%(visiting teacher), 22%(golf caddy). The most frequent complaint was lower back pain(12.8%) in insurance saleswomen, voice symptoms(37%) in telemarketers, knee and ankle symptoms(33.8%) in golf caddies, and voice symptoms(14.4%) in visiting teachers. The factors related to occupational injuries included job type, and age. The factors related to health problems were job type, psychosocial stress, accident risk, and social support. The percentage of the cases that occurred without fringe benefits including social welfare was 30.4%, and the percentage of "paid out of the person's own pocket" of ways to arrange costs of accidents was 32.5%.
CONCLUSIONS
In this study, some female workers in non-standard employment had relatively high level of occupational injuries, accompanied by various health problems. In these occupational classes, the conditions for social insurance and social welfare were poor. It is necessary to expand the application of social insurances including industrial accident compensation insurance. Regardless of job category, psychosocial stress and social support were statistically significant for many symptoms. We believe that measurement of these factors is necessary. In the future, additional studies are required with the use of objective methods for additional job categories.

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The Effect of Job Demands, Job Resources, and Musculoskeletal Complaints on Presenteeism Among the Dependent Self-employment Workers in Korea
Jiyun Kim, Sookja Choi
Journal of Occupational & Environmental Medicine.2022; 64(9): 719. CrossRef
Golfsport als Beruf – eine arbeitsmedizinische Bestandsaufnahme
E. M. Wanke, A. C. Melander, D. A. Groneberg
Zentralblatt für Arbeitsmedizin, Arbeitsschutz und Ergonomie.2020; 70(3): 130. CrossRef
Irregular menstruation according to occupational status
Yeunhee Kwak, Yoonjung Kim
Women & Health.2018; 58(10): 1135. CrossRef
Health Status and Affecting Factors related to Job among Korean Women Employees
Eun-Young Hong, Sang-Dol Kim
Journal of the Korea Academia-Industrial cooperation Society.2012; 13(9): 4107. CrossRef

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Case Series for Occupational Skin Disorders in Carbon Fiber Exposed Packing Workers: Hye Eun Lee, Chang Bum Byun, Sinye Lim, Seung Ho Jeon, Sang Yong Oh, Hyoung Ryoul Kim, Soon Choi, Domyung Paek, Mijin Park; Korean Journal of Occupational and Environmental Medicine 2006;18(3):199-208. Published online September 30, 2006; DOI: https://doi.org/10.35371/kjoem.2006.18.3.199

Abstract PDF: OBJECTIVES
We report an outbreak of skin disorder in semiconductor packing workers. Through an evaluation of the degree of work-relatedness in this case, we aim to develop a method to overcome such health problems in the workplace.
METHODS
A questionnaire investigating the job characteristics and skin symptoms was administered to 51 packing workers working in a semiconductor production factory and 49 questionnaires returned. The 16 subjects in the exposure group and 12 in the non-exposure group underwent doctor's examination and patch test. Two of 28 subjects were excluded in patch test. We investigated the work environment and carbon fiber level which was the potential causative agent.
RESULTS
Forty-five (91.8%) of 49 packing workers complained of itching and stinging. Three of 14(21.4%) in the exposure group and 3 of 11 (27.3%) in the non-exposure group were positive at 48hr reading of patch test for carbon fiber and carbon fiber paper. None was positive at 96hr reading of patch test. Prominent carbon fibers were microscopically observed on the surface of the packing box and the fiber diameter, measured up to 6.0~7.5 micrometer, was likely to induce skin irritation to skin. To avoid worker's direct contact with to carbon fiber, carbon fiber paper box was substituted by a wax coated carbon fiber paper box was substituted for the original carbon fiber paper box, which caused and the workers' symptoms to of workers disappeared.
CONCLUSION
The probably cause of this outbreak of skin disorder was mild irritant contact dermatitis for carbon fiber. To prevent outbreaks of such occupational skin disorder like this, workers should avoid direct contact with carbon fiber.

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The Predictive Study for Hearing Loss using Distortion Product Otoacoustic Emission in Mild Noise-Induced Hearing Loss: Sang Yong Oh, Won Chul Lee; Korean Journal of Occupational and Environmental Medicine 2003;15(3):290-298. Published online September 30, 2003; DOI: https://doi.org/10.35371/kjoem.2003.15.3.290

Abstract PDF: OBJECTIVE: The aim of this study was to predetermine the discrimination standard point of distortion product otoacoustic emission(DPOAE) amplitudes, which discriminates the degree of the mild noise-induced hearing loss, and to estimate the accuracy and predictability of the discrimination standard point of DPOAE amplitudes. Therefore we were able to determine the usability of the DPOAE test in screening exam for mild noise-induced hearing loss.
METHODS
This study was analyzed 50 high frequency-impaired ears(from 25dB HL to 40dB HL at 4000Hz for which the response of DPOAE was not disappeared) and 81 normal ears through the correlation test between the amplitudes of DPOAE test and the threshold of the pure-tone audiometry test.
RESULT
The discrimination between >or=25dB and CONCLUSION
DPOAE test is considered as a more efficient early prevention method against noise-induced hearing loss if this test is conducted as part of the special medical checkup of industrial workers exposed to noise.

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Effects of Respirator Use Evaluated by Urinary Hippuric Acid Concentration in Toluene-Exposed Workers: Bum Seok Kim, Chung Yill Park, Hyeon Woo Yim, Hyoung Ah Kim, Sang Yong Oh; Korean Journal of Occupational and Environmental Medicine 2001;13(4):461-469. Published online December 31, 2001; DOI: https://doi.org/10.35371/kjoem.2001.13.4.461

Abstract PDF

OBJECTIVES
This study was carried out in order to raise workers'recognition of the effects of respirator use by providing concrete and practical data.
METHODS
Twenty-six workers who dealt with toluene based ink and diluents at a gravure printing office in Seoul were investigated. The toluene exposure level and urinary hippuric acid level were monitored under respirator non-wearing(RNW) and under respiratory wearing(RW) conditions.
RESULTS
The mean concentrations of toluene exposed to each worker through the air of gravure printing office were 147.52+/-57.34 and 134.55+/-52.44 ppm on respirator non-wearing day and respirator wearing day, respectively. There was no significant difference in toluene exposure concentration for the two days. The mean concentration of urinary hippuric acid in RNW and RW groups were 1.51 (0.53) g/L and 0.49 (0.14) g/L, respectively, as measured at the end of the workday. There was a significant difference seen in urinary hippuric acid concentration between the two days. The urinary hippuric acid concentration began to increase at 4 hours after the start of the workday(13:00) in RNW. However, there was no significant increase until the end of the workday in the case of RW. The urinary hippuric acid concentration in RW reduced 89.3% as compared with the concentration seen in RNW. There was a significant correlation between the toluene concentration and the urinary hippuric acid concentration in RNW. The regression equation was Y (urinary hippuric acid concentration, g/L) = 0.007 X x(toluene concentration in the air, ppm) + 0.665.
CONCLUSIONS
Our results indicate that the respirator intercepted most toluene that may have been absorbed into the respiratory organs, and suggested that properly wearing a respiratory such as wearing the respirator during the entire workday and performing a proper fit test played an important role in the protection from toluene exposure

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Effects of Factors Associated with Urine Hippuric Acid Correction Values in Urinary Creatinine by HPLC and Jaffe Method and Specific Gravity HPLC Jaffe Method
Key-Young Kim, Jong-Gyu Kim, Ki-Nam Yoon, Wha-Me Park, Hun-Hee Park
Journal of Korean Society of Occupational and Environmental Hygiene.2015; 25(4): 493. CrossRef

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