Annals of Occupational and Environmental Medicine

Myung Hag Lee

3 Articles

Cumulative Trauma Disorders Among Shipyard Workers and Application of Baseline Checklist for Risk Assessment: Sang Hwan Han, Nam Jong Paik, Donghyun Park, Ki Eon Jang, Myung Hag Lee, Jong Tae Park, Dae Sung Kim, Yeon Sook Lee, Kyung Ja Paik, Young Soo Shin, Dong Bin Song; Korean Journal of Occupational and Environmental Medicine 1997;9(4):579-588. Published online December 31, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.4.579

Cumulative trauma disorders were surveyed in a cross-sectional study of 100 male ship yard workers and 43 male office workers. And baseline checklist for risk assessment of cumulative trauma disorders was applicated in a ship making process. Cases of cumulative trauma disorders were defined using physical examinations and electronic diagnostic methods. Data on demographics, individual factors (medical condition), work organization and psychosocial aspects of work were obtained by questionnaire. Association between the above factors and cumulative trauma disorders were assessed by multiple logistic regression models. 29(29 %) participants of male shipyard workers and 4(9.2 %) study subjects of male office workers met our case definitions for cumulative trauma disorders. The myofascial pain syndrome of neck muscles(12 % of participants) and carpal tunnel syndrome(5 % of participants) were the major two medical conditions in shipyard workers. The odds of male shipyard workers for cumulative trauma disorders to male office workers was 3.15 after adjustment of age(95 % C.I. :2.25-5.44). And the variables such as duration of present job, HIVD condition, and surges in workload were associated at least one of the cumulative trauma disorders in the final models (p<0.05) . This study indicates that work related upper extremity musculoskeletal disorders are relatively common among shipyard workers, and shows that the psychosocial factors is not likely to be related to the occur rences of these disorders in heavy workers. Also we developed baseline checklist for risk assessment of cumulative trauma disorders. The checklist was unique in that its expected users were industrial hygienists and occupational healthing nurses who did not have much ergonomic background and in that it was targeted to Korean workers in various types. As the first application of the checklist, shipyard workers were evaluated.

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Medical Managements of Musculoskeletal Diseases in Shipbuilding Industry
Jong-Eun Kim, Young-Ki Kim, Dong-Mug Kang
Journal of the Ergonomics Society of Korea.2012; 31(1): 157. CrossRef
Symptom Prevalence of Musculoskeletal Disorders and the Effects of Prior Acute Injury among Aging Male Steelworkers
Won‐Jun Choi, Young‐Joong Kang, Ji‐Young Kim, Sang‐Hwan Han
Journal of Occupational Health.2009; 51(3): 273. CrossRef

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Discriminating Function of Preemployment Medical Examination and Necessity of Changing over to Preplacement Medical Examination in Korea: Sang Hwan Han, Sung Chul Chung, Myung Hag Lee, Dong Bin Song; Korean Journal of Occupational and Environmental Medicine 1997;9(1):170-177. Published online February 28, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.1.170

Abstract PDF

In Korea, every worker should undergo a preemployment medical examination according to Law for Occupational Safety and Health. But evaluation of it has not been previously carried out. Thus a telephone survey of 213 establishments of Inchon area for evaluation of preemployment medical examination in Korea was conducted. One hundred and fourteen companies(46.5% of all the subjects) were examined medically on preemployment, 47 establishments(41.2% of this study subjects) reevaluated workers by each establishment's medical criteria, and only less than half of diseased workers(DM 38.6% ; hypertension 42.1%, HBV carrier 28.0 % ; active pulmonary tuberculosis 7.9 %; back pain 12.3 %, and noise induced hearing loss 18.4 %) were employed. Employee's fees for preemployment medical examination were covered by 53.5 % of all the subjects. From our survey, it is clear that preemployment medical examination plays discriminating role on the employment of workers based on health status. We thus proposed to change over from preemployment medical examination to preplacement examination based on the evaluation of essential job functions and reasonable accommodation.

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Participation inequality in the National General Health Examination based on enterprise size
Young Joong Kang, Jong Heun Park, Huisu Eom, Bohwa Choi, Seyoung Lee, Ji-Won Lee, Jun-Pyo Myong
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef
Employment Discrimination Against Schizophrenia
Mary V. Seeman
Psychiatric Quarterly.2009; 80(1): 9. CrossRef

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Noise-Induced Temporary Threshold Shift and its Recovery in Industry: Soo Hun Cho, Mi Na Ha, Sang Hwan Han, Young Soo Joo, Ju Hon Sung, Jong Won Kang, Dork Ro Yun, Bong Bin Song, Myung Hag Lee, Seon Tae Kim; Korean Journal of Occupational and Environmental Medicine 1996;8(2):320-329. Published online September 30, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.2.320

Abstract PDF: To determine the recovery time from noise-induced temporary threshold shift (TTS), a prospective field study was conducted at three worksites where workers are known to be exposed high level of noise. Subjects were selected according to answers on a questionnaire which inquired about otological history and previous noise exposure, including avocational, military and occupational exposures. After excluding employees with past otologic problems, recent exposure to high level noise, and under medications, total 92 employees participated in the study. Among 92 participants, complete consecutive audiometric examinations were carried out at 0~2 hours, 5~7 hours, 14~16 hours after worktime noise exposure on 26 participants wearing hearing protectors and 22 participants wearing no protective devices. The difference between the hearing level 0~2 hours after noise exposure and 5~7 hours is statistically significant by paired t-test(p<0.01). The median recovery times calculated from the data of 22 participants wearing no protective hearing devices are 15.6 hours at 4000 Hz, and 7.7 hours, 10.3 hours, 8.4 hours at 1000 Hz, 2000 Hz and 8000 Hz respectively. These data suggest that when measuring the pure tone audiometry for noise exposed workers, at least 16 hours noise-free interval is required.

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