Annals of Occupational and Environmental Medicine

Won Chul Lee

17 Articles

Factors Associated with Quality on Sleep of Subway Workers by Shift-Work: Min Gi Kim, Won Chul Lee, Young Min Lee, Jae Hong Ryoo, Hawn Cheol Kim, Seung Won Yoo, Kyung Han Nam; Korean Journal of Occupational and Environmental Medicine 2008;20(4):326-334. Published online December 31, 2008; DOI: https://doi.org/10.35371/kjoem.2008.20.4.326

BACKGROUND
The sleep quality of subway drivers who work in the dark underground with an rotating shift system is generally poor, which can degrade the quality of a worker's life. This study examined the relationship between the sleep quality of subway worker and shift work by comparing three shift systems (rotating shift system, a three day shift system, and no-shift system).
METHOD
Questionnaires including The short form of the Korean Occupational Stress Scale (KOSS), Pittsburgh Sleep Questionnaire (PSQI), the worker's age, gender, job type, accident, near miss and shift system were given to a total of 1010 workers. The results of 759 qualified questionnaires (75.15 %) were analyzed using the SPSS (ver 12.0) program.
RESULT
The highest level of job stress was found among those working a rotating shift system followed by three shift system and no-shift system. The mean sleep quality score in the rotating shift workers was 5.1 (SD+/-3.2), which was greater than the sleep symptom score (5). 34.8% of rotating shift workers suffered from sleep symptoms. The sleep quality score by shift-work was significantly different. High job demand, strong external locus control, the experience of a near miss or an accident in the workplace during previous year has an adverse affect on the sleep quality. The sleep quality improved in case of a change into a no-shift system or a strong internal locus control.
CONCLUSION
A rotating shift system is more harmful to the quality of sleep in subway workers than a 3 shift system or no-shift system. In addition, job stress, personality, near miss and the experience of an accident affect the sleep quality of subway workers.

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Prevalence of Insomnia in Various Industries and Associated Demographic Factors in Night-Shift Workers Using Workers’ Specific Health Examination Data
Jihye Lee, Yeonpyo Hong, Weonyoung Lee
International Journal of Environmental Research and Public Health.2021; 18(13): 6902. CrossRef
Associations between Supervisor and Coworker Support and Parenting Stress among Employed Mothers with Nonstandard Work Schedules
Woosang Hwang, Kamala Ramadoss
Journal of Social Service Research.2020; 46(5): 693. CrossRef
Factors related with quality on sleep of daytime workers
Bu-il Kim, Seong-yong Yoon, Jin-seok Kim, Kuck-Hyeun Woo, Seong-yong Cho, Ho Lee, Jong-min An
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef
Trouble in transit: Organizational barriers to workers’ health
Nicole P. Bowles, Bruce S. McEwen, Carla Boutin‐Foster
American Journal of Industrial Medicine.2017; 60(4): 350. CrossRef
Relationship Between Psychosocial Factors and Smartphone Addiction Among Middle School Students in Rural Areas
Hu-Yeon Lee, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2015; 16(7): 4711. CrossRef
Influence of Health-Promoting Behaviors on Quality of Sleep in Rotating-Shift Nurses
Seung Wha Shin, Su Hyun Kim
Journal of Korean Academy of Fundamentals of Nursing.2014; 21(2): 123. CrossRef
Associations between Sleep Quality, Daytime Sleepiness, with Perceived Errors during Nursing Work among Hospital Nurses
Mi Sung Kim, Jang-Rak Kim, Ki-Soo Park, Young Sil Kang, Sung Pil Michael Choe
Journal of agricultural medicine and community health.2013; 38(4): 229. CrossRef
Comparison of Dietary Status and Health Behaviors according to the Obesity in Male Workers
Seung Gyo Rhie, In Yong Jang
The Korean Journal of Community Living Science.2013; 24(3): 411. CrossRef
Relationship Between Job Stress and Quality of Sleep among 119 Recue Workers
Seong-Woo Yun, Kyeong-Ae Oh, Hyun Yun, Jong Park
Journal of the Korea Academia-Industrial cooperation Society.2013; 14(6): 2926. CrossRef
Factors Influencing Sleep Quality in Clinical Nurses
Kuem-Sun Han, Eunyoung Park, Young Hee Park, Hee Su Lim, Eun Mi Lee, Leen Kim, Ducksun Ahn, Hyuncheol Kang
Journal of Korean Academy of Psychiatric and Mental Health Nursing.2011; 20(2): 121. CrossRef

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Influence of Self-Esteem and Social Support on the Depression Stati of Some Clinical Nurses: Hye Suk Kim, Hyeon Woo Yim, Ji Yeon Lee, Hyun Ju Cho, Sun Jin Jo, Won Chul Lee; Korean Journal of Occupational and Environmental Medicine 2007;19(2):125-134. Published online June 30, 2007; DOI: https://doi.org/10.35371/kjoem.2007.19.2.125

Abstract PDF

OBJECTIVES
The purpose of this study was to examine the influence of self-esteem and social support on the depression stati of some clinical nurses, and propose basic data for a depression care program.
METHODS
Between March 31 and April 5 at 2006, a self-reporting questionnaire survey was administered to 200 nurses at a general hospital located in Gyeonggi-do. The Beck's Depression Inventory (BDI) was used to assess the subjects'depression stati.
RESULTS
The average BDI score of the clinical nurses was 8.9+/-7.5, with 59% belonging to the normal category, 28% having mild depressive symptoms, and 13% with a moderate degree of depressive symptoms. The degree of depression was significantly increased in the clinical nurses with a lower self-esteem and less social support. The degree of depression was significantly increased in the clinical nurses with a lower self-esteem and less social support. According to a multivariate regression analysis, a significant association was found between self-esteem and social support in relation to the depression of clinical nurses. The effect of social support was found to not be significant in cases where the self-esteem was high: however, depression was significantly influenced by social support in cases where the self-esteem was low.
CONCLUSION
Self-esteem and social support were observed to influence the depression stati of clinical nurses. Therefore, it is suggested that an increase in depression management programs is required to create systematic management to maintain an atmosphere of high self-esteem and close relationships to manage the depression of clinical nurses.

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Factors Related to Post-traumatic Stress Disorder Symptoms Among Intensive Care Unit Nurses
SuHee Kim, YeoJin Im
Asian Nursing Research.2024; 18(2): 159. CrossRef
The Relationship between Job Stress and Depression in Opticians in Seoul, Korea
Semi Kim, Jihye Ahn, Moonsung Choi
Journal of Korean Ophthalmic Optics Society.2019; 24(3): 223. CrossRef
What causes the experience of discrimination in non-regular workers?
Seong-Hoon Kang, Jin-Ho Song, Tae Hwan Koh, Do Myung Paek, Jong-Tae Park, HoSun Chun
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef
The Influence of Terminal Care Performance, Death Anxiety and Self-Esteem on Terminal Care Stress of Geriatric Hospital Nurses
Won Soon Kim, Hun Ha Cho, Suhye Kwon
The Korean Journal of Hospice and Palliative Care.2016; 19(2): 154. CrossRef
Effects of Job Stress and Supervisory Support on Depression of Care Givers in Elderly Care Facilities
Ju Hee Hwang, Sungyeau Choi, Hyunju Park
Korean Journal of Occupational Health Nursing.2015; 24(4): 352. CrossRef
The Relationships between Emotional Labour and Depressive Symptoms Among Nurses in University Hospitals
Kyung-Ok Kim, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2013; 14(8): 3794. CrossRef
Relations of Burnout, Interpersonal Relations, Professional Self-concept and Depression in Clinical Nurses
Eun Yi Yeom, Hae Ok Jeon
Journal of the Korea Academia-Industrial cooperation Society.2013; 14(6): 2869. CrossRef
Influence of Ego-resilience and Social Support on the Depression of Hospital Nurses
An-Saeng Lee, Chi-Keun Yoon, Jeong-Mi Lee
Korean Journal of Occupational Health Nursing.2012; 21(1): 46. CrossRef
Job Satisfaction of Psychiatric and Community Mental Health Nurses in Community Mental Health Centers
Kwangza You, Kyunghee Lee
Korean Journal of Occupational Health Nursing.2012; 21(2): 108. CrossRef
Job Satisfaction, Self-Esteem, and Nursing Task Performance among Registered Nurses and Nurse Assistants in Long-Term Care Hospitals
Mi Ra Sim, Kye Ha Kim
Journal of Korean Academy of Nursing Administration.2010; 16(4): 446. CrossRef
Relationship between Job Stress Contents, Psychosocial Factors and Mental Health Status among University Hospital Nurses in Korea
Hyun-Suk Yoon, Young-Chae Cho
Journal of Preventive Medicine and Public Health.2007; 40(5): 351. CrossRef

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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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Factors Associated with Stress Symptoms In Korean Dental Laboratory Technicians: Ji Hwan Kim, Won Chul Lee, Kang Sook Lee, Chul Lee, Ki Nam Jin; Korean Journal of Occupational and Environmental Medicine 2000;12(4):501-514. Published online December 31, 2000; DOI: https://doi.org/10.35371/kjoem.2000.12.4.501

Abstract PDF

OBJECTIVES
To investigate the factors associated with symptoms from job stress among Korean dental laboratory technicians.
METHODS
We collected the data of 786 technicians for life-style, job stressor, social support, self-esteem, personality, and various dimension of stress symptoms included roomatization, obsessive-compulsive, interpersonal sensitivity, depression, anxiety, and hostility by self-administerd questionnaire. Global severity index of dental technician (GSID) was calculated by total sum of sub-dimension.
RESULTS
We used 80 percentile as a cut-off point, and got the 81.5 % of sensitivity, 86.1 % of specificity by receiver operating characteristic curve. The odds ratios of various factors in high group of GSID compared with low group were 1,49(95 % Cl 1.00-2.00) for smoker, 1,53 (1.06-2.21) for unhealthy group, 6,69 (4.74-9.44) for work overload, 8.34(5.82-11.97) for work demand, 9.89 (6.76-74.94) for work process, 8.27 (5.80-11,79) for work environment, 5.82 (4.04-8.39) for interpersonal relationship, 8.34 (5.82-11.97) for occupational conflict, 5.70 (4.04-8.04) for labor remuneration, 7.58 (5.37-10.71) for role conflict, but 0.39 (0.27-0.57) for social support, 0.41 (0.29-0.60) for self-esteem. By multiple logistic regression, factors were significantly associated with GSID were age, working area, role overload, work demand, work procedure, physical environment, occupational conflict, role conflict, social support, personality traits.
CONCLUSIONS
Factors associated with symptoms from stress were role overload, work demand, work procedure, occupational conflict, interpersonal relationship, labor remuneration and role conflict in Korean dental laboratory technicians. It is suggested that health promotion program to reduce job stress and to enforce social support and self-esteem should be developed.

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Retirement and old age preparation of dental technicians -Targeting the metropolitan area dental technicians-
Su-Min Cho, Hae-Chan Lee, Jong-Kwon Jung, Dong-Hyeon Yu, Jong-Sun Lee, Jung-Soo Lee, Eun-Jeong Bae, Ji-Hwan Kim
Journal of Korean Acedemy of Dental Technology.2016; 38(4): 315. CrossRef
Assessment of Job Stressors for Dental Technicians in Ulsan City
Young-Ho Hong, Hae-Kyoung Kim, Hae-Young Hwang, Sang-Jun Choi
Journal of Korean Acedemy of Dental Technology.2012; 34(4): 403. CrossRef

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Effects of Genetic Factor, Life Styles, and Diet on Urinary Hippuric Acid Excretion in Toluene Exposed Workers: Hyeon Woo Yim, Chung Yill Park, Young Man Roh, Kang Sook Lee, Jung Min Lee, Won Chul Lee, Se Hoon Lee, Chee Kyung Chung; Korean Journal of Occupational and Environmental Medicine 2000;12(3):405-420. Published online September 30, 2000; DOI: https://doi.org/10.35371/kjoem.2000.12.3.405

Abstract PDF

OBJECTIVES
The purpose was to investigate the distributions and the effects of genetic polymorphism of aldehyde dehydrogenase 2(ALDH2), cytochrome P450 1A1(CYP1A1), and cytochrome P450 2E1(CYP2E1) on the toluene metabolism.
METHODS
The subjects consisted of 160 workers who were exposed to toluene in different industries such as paint manufacturing, painting on steel and wood products, printing, bonding, and coating. The exposed toluene level was monitored by passive air sampler, and the questionnaire variables were age, sex, smoking, drinking, previous nights drinking, use of personal protective equipment, work duration, and taking benzoic acid containing food. The urinary hippurric acid collected in the end of shift was corrected by urinary creatinine concentration. The genotypes of ALDH2, CYP1A1, and CYP2E1 were investigated using polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) methods with DNA extracted from venous blood.
RESULTS
The geometric mean and the geometric standard deviation of urinary hippuric acid concentration were 0. 44 g/g creatinine and 2. 80. The urinary hippuric acid concentration was significantly related to personal exposed toluene level among personal exposed toluene level, use of personal protective equipment, and benzoic acid containing food diet. The slope differences of the regression for ALDH2, CYP1A1, and CYP2El genetic polymorphism, age, smoking, and work duration tended to be significant. In multiple regression analysis, the regression coefficient of toluene, ALDH2, CYP1A1, CYP2E1 genetic polymorphism were significant.
CONCLUSIONS
Prom the above results, urinary hippuric acid level after toluene exposure was significantly affected by the genetic polymorphism of ALDH2, CYP1A1, CYP2E1. It is needed further investigation of the urinary hippuric acid level considering the effect of genetic polymorphism.

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Applications of CYP-450 expression for biomonitoring in environmental health
Ho-Sun Lee, Mihi Yang
Environmental Health and Preventive Medicine.2008; 13(2): 84. CrossRef
Past and Future Applications of CYP450-Genetic Polymorphisms for Biomonitoring of Environmental Toxicants
Bitna Yi, Ji-Yeon Yang, Mihi Yang
Journal of Environmental Science and Health, Part C.2007; 25(4): 353. CrossRef

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Time Series Analysis between the Concentration of Air Pollutants and the Number of Respiratory Disease Outpatients in Seoul: Byeong Chul Choi, Jung Wan Koo, Sung Kyun Park, Hyun Woo Yim, Kang Sook Lee, Won Chul Lee, Chung Yill Park; Korean Journal of Occupational and Environmental Medicine 2000;12(1):70-80. Published online March 31, 2000; DOI: https://doi.org/10.35371/kjoem.2000.12.1.70

Abstract PDF

OBJECTIVES
This study was conducted to investigate whether air pollution levels in Seoul have short term effects on respiratory disease outpatients.
METHODS
We analyzed five air pollutants (CO, NOy, Oy, SOp, PMyp) and daily counts of outpatient for respiratory disease divided by age group ((15yrs, 15-64yrs, 65+yrs) during the period of July 1997-June 1998 using Generalized Additive Model(GAM).
RESULTS
After controlling for seasonal trends, day of the week, week of the month, temperature and humidity, CO (RR=1. 041 ~ l. 051, 0-day lag) and NOy (RR=1. 024~1. 050, 3-day lag) were significantly associated with daily counts for respiratory disease in all age groups. 0, and SO, were associated, with a 3-day lag in the age group under 15 years (O RR=1. 047, 95% CI=1. 045- 1. 049 i SOp RR=1. 018, 95% CI=1. 017- l. 020) and with a 0-day lag in the age group 15 to 64 years (0, RR=1. 035, 95% CI=1. 032-1. 037; SO, RR=1. 037, 95% CI=1. 035-1. 039), in the age group over 65 years (O RR=1. 042, 95% CI=1. 033-1. 051; SO RR=1.029, 95% CI=1.022-1.036). PM was weakly associated, with a 1-day lag in the age group under 15 years (RR=1.011, 95% CI=1.010-1.013) and with a 0-day lag in the age group 15 to 64 years (RR=1. 021, 95% CI=1. 019-1. 023), in the age group over 65 years (RR=1. 025, 95% CI=1. 018-1. 032). In the two pollutant model, the magnitudes of the relative risk for CO, NOy and Oq were maintained, but SOy was not associated with daily counts for respiratory disease in the age group under 15 years after controlling for NO,. PMyp was not associated in all age groups after controlling for CO, so the association with PMyp in the single pollutant model might be confounded by CO. In this study, the impact Of PMyp on the respiratory disease was not large as compared with other pollutants.
CONCLUSIONS
Air pollution in Seoul may increase the incidence of the respiratory disease, so more positive attention for the control of air pollution should be paid.

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Impact of environmental factors on pulmonary tuberculosis in multi-levels industrial upgrading area of China
Xiang Yi, Shixiao Liu
Environmental Research.2021; 195: 110768. CrossRef

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Need Assessment for Stage of Behavior Change in Workplace Health Promotion Strategy: Kang Sook Lee, Jung Wan Koo, Hyeon Woo Yim, Hyun Sook Hong, Joung Min Lee, Won Chul Lee, Chung Yill Park, O'Donnell, M , Kwang Ho Meung; Korean Journal of Occupational and Environmental Medicine 1999;11(4):492-504. Published online December 31, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.4.492

Abstract PDF

OBJECTIVES
In order to evaluate the stage of behavior change for health promotion strategy in workplace METHODS: Questionnaire survey was carried out for 309 workers who employed in H Electronics company in Kyongin area from September to October 1998.
RESULTS
According to need assessment of four step such as precontemplation stage, contemplation stage, action stage, maintenance stage which were to change of behavior for health promotion, the percent for quitting smoking were observed 48.8%, 43.1%, 8.1%. 0 %, and for the restriction of drinking were 29.8%, 10.6%, 9.3%, 5.3%; for fitness 11.1%, 31.0%, 37.3%, 20.6% in male 26.6%, 27.8%, 26.6%, 19.0% in female, for regular diet 26.1%, 19.8%, 38.7%, 15.3% in male, 27.8%, 22.2%, 40.0%, 10.0 % in female and for stress management 5.8%, 10.6%, 8.7%, 75.0% in male, 13.6%. 22.7%, 19.7%, 44.0% in female. In heavy smoker (p=0.017) and heavy drinker, (p=0.021) the percent of precontemplation stage was significantly higher than in lower drinker and light smoker.
CONCLUSIONS
This study suggested that company support for health promotion in workplace was weak and workers of high risk group for smoking and drinking were in precontemplation stage. So before conducting the health promotion program, health risk appraisal and need assessment for stage of behavior change should be taken for the efficient heath promotion strategy.

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Effects of a Tailored Health Promotion Program to Reduce Cardiovascular Disease Risk Factors Among Middle-Aged and Advanced-Age Bus Drivers
Gyu-Seok Hwang, Jae-Wook Choi, Seoung-Hyung Choi, Seoung-Gil Lee, Kyung-Hee Kim, Yong-Min Cho, Chungsik Yoon
Asia Pacific Journal of Public Health.2012; 24(1): 117. CrossRef

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Prevalence of Tinnitus and Hearing Thresholds of a Non-Noise-Exposed Population with and without Tinnitus: Jung Wan Koo, Won Chul Lee, Hyunwook Kim, Byeong Chul Choi, Min Hwa Oh, Chung Yill Park; Korean Journal of Occupational and Environmental Medicine 1999;11(3):323-331. Published online September 30, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.3.323

Abstract PDF

OBJECTIVES
In order to establish prevalence and characteristics of tinnitus and hearing thresholds according to tinnitus, this study was carried out.
METHODS
Nine hundred and thirty two subjects, undergone human dock or general health check-up and been in college, were surveyed to the questionnaire on the general characteristics, past medical histories, life styles, subjective symptoms about hearing, taking ototoxic drugs and were conducted on the hearing thresholds by pure tone audiometry.
RESULTS
Of the total population, 98 reported tinnitus, giving an overall prevalence of 10.5%, prevalence of tinnitus in the subjects with the factors infuencing hearing thresholds were 17.4 %, prevalence without the factors influencing hearing thresholds were 7.5 %. Frequency of tinnitus of the total population was the highest in 'once per several months'(39.6 %) and followed by' once per several days'(29.7 %), 'all day long'(16.5 %) and' several times per day'(14.3 %). Complaint site of tinnitus was 41.8 % in left ear or right ear 39.6 % in both ear and 18.7 % in head. The 13.6% of the total subjects complained sleep disturbance. Hearing thresholds in the subjects without the factors influencing hearing thresholds tended to increase or decrease in 20 and 30 years old according to tinnitus, but those with, tinnitus tended to increase more than chose without tinnitus in 40 and 50 years old.
CONCLUSIONS
Results also provide evidence that reports of tinnitus at the time of annual audiometric testing may be useful in identifying workers at greater risk for developing significant shifts in hearing thresholds. Awareness of the possible occurrence of tinnitus may encourage worker to cooperate more actively in a company hearing conservation programme.

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Autonomic Conditions in Tinnitus and Implications for Korean Medicine
Eun Ji Choi, Younghee Yun, Seungyeon Yoo, Kyu Seok Kim, Jeong-Su Park, Inhwa Choi
Evidence-Based Complementary and Alternative Medicine.2013; 2013: 1. CrossRef
Roles of Cognitive Characteristics in Tinnitus Patients
So-Young Lee, Ji-Hae Kim, Sung-Hwa Hong, Dong-Soo Lee
Journal of Korean Medical Science.2004; 19(6): 864. CrossRef

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Comparison of Epidemiologic Characteristics of Pneumoconiosis in Manufacturing and Mining Industries in Korea: Jung Hee Jang, Hyeon Woo Yim, Won Chul Lee, Kwang Ho Meng; Korean Journal of Occupational and Environmental Medicine 1999;11(3):373-384. Published online September 30, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.3.373

Abstract PDF: OBJECTIVES
This study was planned to compare the epidemiological features such as radiological and clinical features between coal worker's pneumoconiosis and manufacturing pneumoconiosis in connection with their age and dust exposure duration.
METHODS
For the study, detailed examination records of those workers who had been confirmed to have pneumoconiosis in coal mining and manufacturing industries by the Ministry of Labour during two year period of 1991 and 1992. Total number of study subjects was 895 pneumoconiosis cases; 504 from coal mining and 391 from manufacturing industries. Information variables for the data analysis were sex, age, dust exposure duration, work position as the independent variables and radiological pneumoconiosis category, pulmonary function test results and pulmonary tuberculosis complication status as the dependent study variables.
RESULTS
There was a significant difference in distribution of radiological categories of both pneumoconiosis groups. The proportion of suspicious and category 1 pneumoconiosis was higher in manufacturing pneumoconiosis group than in coal mine pneumoconiosis group whereas category 2 and large opacity pneumoconiosis was higher in coal mine pneumoconiosis group than in manufacturing pneumoconiosis group. Major ventilatory indices such as FVC and FEV1 were significantly lower in coal mine pneumoconiosis group than in manufacturing pneumoconiosis group even after other variables such as age and smoking history were statistically adjusted for. CONCLUSIONS: It is suggested that some selected outcome variables such as radiological category of pneumoconiosis, ventilatory impairment, and pulmonary tuberculosis complication rate were significantly different between coal mine pneumoconiosis and manufacturing pneumoconiosis.

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Effect of Hearing Impairment on the Anxiety and Depression: Sang Wook Song, Jung Wan Koo, Won Chul Lee; Korean Journal of Occupational and Environmental Medicine 1996;8(3):466-476. Published online December 31, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.3.466

Abstract PDF: Hearing loss is a very common health problem throughout the world, although the number of hearing impaired individuals varies greatly in the countries. It is generally accepted that hearing impairment inevitably leads to a breakdown in communication and physical and mental health problems consequently. Nevertheless, few community based studies have been undertaken to examine both the mental and more general physical state of the hearing impaired patients. This study was conducted to evaluate the anxiety and depression in hearing impaired patients. Self-administered questionnaires including sociodemographic data were given to 336 subjects over the age of 18 years who visited the Health Management Center, Uijongbu St. Mary's Hospital for the routine health check up from January 1996 to April 1996 and three hundred seventeen samples (male: 197, female: 120) were selected. For the assessment of anxiety and depression we used Self-rating Anxiety Scale (SAS) and Self-rating Depression Scale (SDS) devised by Zung. And hearing impairment was evaluated using a Beltone Model 110 Audiometer. The results were statistically analyzed by ANOVA test and x(2) test. The results obtained were as follow: 1. The mean anxiety scores counted by SAS of 0-15dB HL (hearing loss) group (classified by the average loss in the better ear at 500, 1,000, 2,000Hz frequencies), 16-29dB HL group, 30-44dB HL group, more than 45dB HL group were 33.1+/-6.6 32.2+/-5.9, 41. +/-8.4, 42.8+/-6.0 respectively. And the mean depression Scores counted by SDS of 0-15dB HL group, 16-29dB HL group, 30-44dB HL group, more than 45dB HL group were 37.4+/-7.7, 37.2+/-7.2, 46.2+/-8.4, 48.6+/-8.6, respectively. The more than 30dB HL group showed significant high scores in SAS and SDS than the less than 30dB HL group (p<0.001). 2. The frequency of clinically significant anxiety disorder (SAS > or = 50) was 3.4% in less than 30dB HL group and 11. 1% in more than 30dB HL group. The difference between two groups was statistically significant (p<0.05). 3. The frequency of clinically significant depression disorder (SDS > or = 50) was 5.1% in less than 30dB HL group and 39.5% in more than 30dB HL group. The difference between two groups was statistically significant (p<0.05). 4. When several important interaction variables related to anxiety: and depression (such as age, sex, marital status, education level, economic status, occupation, religion) were stratified and we compared the groups between the more than 30dB HL and less than 30dB HL, most factors about anxiety and depression showed the significant differences in two groups. 5. Multiple logistic regression analysis revealed that hearing loss(p<0.05) predicted anxiety disorder (SAS> or = 50) and hearing loss(p<0.01), age(p<0.05) predicted depression disorder (SDS> or = 50). In conclusion, there was significant difference in anxiety and depression scores, between more than 30dB HL(in the better hearing ear) group and less than 30dB HL group. This study suggested that anxiety and depression should be considered as adverse effects of hearing impairment.

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Comparative Validity Study of Body Fat Assessment Methods Available in the Work Places: Kyong Soo Kim, Sun Myeong Ock, Chan Hee Song, Whan Suk Choi, Won Chul Lee, Chung Yill Park, Seung Hee Lee, Jae Goo Lee, Hong In Kim; Korean Journal of Occupational and Environmental Medicine 1996;8(3):535-545. Published online December 31, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.3.535

Abstract PDF

No abstract available.

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Changes in Blood Pressure, Blood Glucose, and Lipid Profile Caused by Changes of Weight, Percent Body Fat, and Waist Circumference in Adult Men with Normal Weight and Waist Circumference
Ho Chun Choi, Hyun Jin Kim, Seong Jun Min, Kiheon Lee, Kyung Woo Kim, Seung Min Oh, Tae Woo Yoo
Korean Journal of Family Medicine.2010; 31(6): 430. CrossRef

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Knowledge and Attitude towards the Noise-Induced Hearing Loss of the Workers with Hearing Impairment in the Noisy Workplace: Hyun Rim Choi, Won Chul Lee; Korean Journal of Occupational and Environmental Medicine 1996;8(1):105-118. Published online February 29, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.1.105

Abstract PDF

This study was designed to survey the knowledge and attitude towards the noise-induced hearing loss (NIHL) of the workers with hearing impairment who are working at the noisy workplaces. The subjects were 423 workers selected from noisy workplaces, where the noise level was 85dB and over, and whose hearing impairment was 30 dB and over at 1,000 Hz or 40 dB and over at 4,000 Hz in the primary screening auditory test. For this study, a questionnaire was applied to the study subjects studying their knowledge and attitude towards the noise-induced hearing loss including their personal characteristics. Only 379 workers completed the questionnaires sincerely except 18 workers who did not show hearing impairment, and they were divided into three groups according to their status of hearing impairment: noise-induced hearing loss (Di), suspected hearing loss (0, hearing loss with medical reasons (D2), for their comparison of their knowledge and attitude towards the noise-indueed hearing loss. The workers who took auditory test at employment were 47.8% and who took auditory test last year after employment were 76.8%. The workers who put on protection device after the; test in 77.1%. The workers did not know the fact that they would work at the noisy workplace in 31.9%. The disturbance of daily communication is significantly different symtom among 3 groups (P<0.01). The workers answered that noise did not affect the body adversely in 4.7% and NIHL was not problem if it did not disturb daily life in 31.9%.In case they were diagnosed as NIHL, 68.6%-of the subjects answeredi-that they would put on protection devices thoroughly and 20.8% answered that they would ask for, medical care. And 39. 3% of them answered that they would want to stay at their present work-places even though they were ordered to change their workplaces to the another less noisy workplaces. The proportion of right answer in the article related NIHL was 61.2% in average. For the protection of NIHL, an effective hearing, conservation. program should be developed and provided to the labor working in the noisy workplace.

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The Research of Safety Effects by using a Hearing Protection(Ear Plug) in the Military
Sung Ho Hwang, Myo Kyoung Joo, Jae Bum Park
Journal of the Korean Society of Safety.2013; 28(4): 103. CrossRef
Predictors of Hearing Protection Behavior Among Power Plant Workers
Youngmi Kim, Ihnsook Jeong, Oi-Saeng Hong
Asian Nursing Research.2010; 4(1): 10. CrossRef

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Performances of the WHO Neurobehavioral Core Test Battery among Mal Workers Occupationally Non-exposed to Neurotoxic Agents: Se Hoon Lee, Hyoung Ah Kim, Won Chul Lee, Seong Sil Chang, Kyung Jae Lee, Chung Yill Park, Chee Kyung Chung; Korean Journal of Occupational and Environmental Medicine 1995;7(1):139-151. Published online February 28, 1995; DOI: https://doi.org/10.35371/kjoem.1995.7.1.139

Abstract PDF: Five items among neurobehavioral core test battery of World Health Organization, including Santa Ana dexterity, pursuit aiming, digit symbol, simple reaction time, and Benton visual retention, were administered to the workers occupationally non-exposed to neurotoxic agents by operational guide for the WHO neurobehavioral core test battery. Subjects were volunteers from the industrial workers (117) and clerks (40). Detailed occupational history such as exposed agents including noise or vibration, educational level, residence, smoking and drinking habit were recorded. Most of the neurobehavioral tests were correlated with age and educational level. Smoking was correlated with pursuit aiming and digit symbol. Vibration affected pursuit aiming. Job type (industrial workers vs. clerks) and noise exposure did not affected among tested items. Multiple regression analysis was done for establishing predict equation to estimate normal ranges of the tests for male workers. Age was shown to be main independent variable affected for all tests except wrong dot of pursuit aiming. Educational level was also shown to affected most of the tests except Santa ana dexterity and wrong dot of pursuit aiming. Alcohol consumption affected Santa Ana dexterity, non-preferred hand, and smoking affected only wrong dot of pursuit aiming after multiple regression analysis.

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Health Classification of Workers in Special Medical Examinations: Seung Han Lee, Won Chul Lee, Hyoung Ah Kim, Seung Sil Chang; Korean Journal of Occupational and Environmental Medicine 1994;6(2):289-301. Published online September 30, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.2.289

Abstract PDF: The findings of special medical examinations are not infrequently summarized in the form of health classification. This procedure seems valuable for the protection of workers'health from personal health as well as public health point of view, because health classification of workers provides occupations health workers with birds eye view informations in terms of medical, placement and educational procedures, which are to be followed after medical examinations. In this study, the authors have reviewed the existing systems of special medical examinations and Health classifications in different countries and those recommended by international organizations for the purpose of improving the current system in Korea. The important issues covered in this review in relation to health classification of workers included the categories of diseases, the examination and laboratory tests, the criteria for health level classification and the health instructions to be given at each health levels. It was found that the current health classification system in Korea could be featurea as follows : 1. Special medical examinations are always carried out in combination with general medical examinations, contributing to the detection of risk factors of occupational diseases. 2. The selection of examinees is always made on the basis of work environment monitoring, often resulting in the underdetection of exposed workers. 3. Even if the test items are properly selected according to the principles of occupational medicine, further review is required in the light of recent advances in the pathogenesis as well as early changes of occupational diseases and epidemiologic principles. 4. The criteria for the classfication of health levels are to be reviewed on the basis of clinical epidemiology. 5. The health instructions covered only medical and placement aspects, failing to introduce the concept of health promotion.

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The Factors associated with Knowledge, Attitude and Practice Regarding Occupational Health Among Small and Medium Scale Industry Workers: Chung Yill Park, Kang Sook Lee, Won Chul Lee, Se Hoon Lee; Korean Journal of Occupational and Environmental Medicine 1994;6(1):42-55. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.42

Abstract PDF

This study was carried out to determine the knowledge(K), attitude(A) and practice(P) on major occupational health problems among small and medium scale industry workers in Kimpo area. We used self-administered questionnairs regarding the emergency treatment on accident, the management of hazardous materials, the work place hygiene, the health risk of young workers and female works, the use of protective device, prevention of occupational disease, the periodic physical examination and the occupational health administration. The results obtained were as follow; 1. There were significant differences among age groups on the KAP. The teenage group had the lowest scores. As the age increased, total mean scores of KAP were increased concurrently, and this trend was statistically significant. 2. There was significant differences between male and female subjects on total mean scores of knowledge. But on that of the attitude and practice, there was no significant difference between male and female subjects. 3. As the size of enterprise increased, the mean scores of knowledge, attitude and practice were increased, but this trend was not statistically significant. 4. As the work duration increased, the mean scores of the attitude and the practice were increased. But the mean scores of the knowledge did not show this trend. 5. The white collar workers had significant higher scores than blue collar workers on knowledge, but there were not significant differeneces on attitude and practice. 6. The significantly associated variables on knowledge were work status and sex. On attitude and practice, age and work duration were significantly associated variables, but the degree of association was low. 7. When stepwise multiple regression analysis was done, work status, sex, age were significantly attributed to knowledge, age and sex wwere attributed to attitude, and age was attributed to knowledge, but the coefficient of determination were very low. In conclusion in small and medium scale industry workers, there were weak or no effects of age, sex of enterprise, work duration and work status on knowledge, attitude and practice regarding occupational health. So, it is suggested that all the members of the workers should be included in health education program for the workers.

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Effects of a Problem-Based Learning Education Program for Occupational Health Nursing Using Smart Learning on Occupational Health Knowledge and Nursing Professionalism
Kyung Jin Hong
Healthcare.2024; 12(7): 737. CrossRef
Participation inequality in the National General Health Examination based on enterprise size
Young Joong Kang, Jong Heun Park, Huisu Eom, Bohwa Choi, Seyoung Lee, Ji-Won Lee, Jun-Pyo Myong
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef
A Predictive Model of Workers' Quality of Life
Bok-Im Lee, Hye-Sun Jung
Korean Journal of Occupational Health Nursing.2011; 20(1): 35. CrossRef

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Epidemiological survey on the environment and health status in asbestos factories: Im Goung Yun, Chung Yill Park, Won Chul Lee, Young Lim, Kyung Ah Kim; Korean Journal of Occupational and Environmental Medicine 1993;5(1):137-151. Published online February 28, 1993; DOI: https://doi.org/10.35371/kjoem.1993.5.1.137

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No abstract available.

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Ovarian cancer in a former asbestos textile factory worker: a case report
Sunwook Park, Jaechan Park, Eunsoo Lee, Huisu Eom, Mu Young Shin, Jungwon Kim, Dongmug Kang, Sanggil Lee
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef
A Study on Characteristics of Airborne Asbestos Concentrations Using PCM and TEM in Life Environment Surroundings of Seoul
Jinhyo Lee, Suhyun Lee, Jihui Kim, Seokryul Oh, Jinho Shin, Seokwon Eom, Youngzoo Chae, Jinsook Lee, Jayong Koo
Journal of Korean Society of Environmental Engineers.2013; 35(9): 613. CrossRef
Asbestos-related Diseases among Asbestos Textile Factory Workers and Residents Around the Factory
Dong-Mug Kang, Dong-Chul Gu, Kun-Hyung Kim
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Compensation and Diagnosis of Asbestos Related Disease
Soo-Geun Kim
Korean Journal of Family Medicine.2009; 30(5): 335. CrossRef

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Relations Between Alcohol Intake and Certain Liver Function Teats in Healthy Adult Male White Color Workers: Chung Yill Park, Won Chul Lee, Chee Kyung, Im Goung Yun, Seung Han Lee; Korean Journal of Occupational and Environmental Medicine 1989;1(1):127-139. Published online February 28, 1989; DOI: https://doi.org/10.35371/kjoem.1989.1.1.127

Abstract PDF: We analysed the multivariate relationship between alcohol intake and serum gamma glutamyl-transpeptidase(S-GGTP), aspartate aminotransferase(S-ASAT), alinine aminotransferase(S-ALAT) and age. A group of 1,351 healthy male white color workers aged 18 to 59 years were systematically examined. Weekly alcohol intake and duration was obtained by an interview. The results are as follows: 1. Weekly alcohol intake of 18-29 age groups was significantly less than that of other age group each. And no differences between other age groups can be seen. 2. Statistical analysis of variance showed that the differences found between the various drinking groups was significant for the mean S-GGTP, S-ASAT(P<0.01). 3. From the weekly alcohol intake 180-269 g group, significantly higher values of S-GGTP was found, whereas S-ASAT and S-ALAT were not. 4. Statistical chi-square trends test showed that the difference found between the various drinking groups was significant for the percentage of abnormal S-GGTP, S-ASAT and S-ALAT (P<0.01). 5. Fifty-five percent of the raised values of S-GGTP found between had no identifiable clinical or biochemical abnormality apart from a raised S-GGTP. Fifty-six percent of these otherwise normal subjects came from 31.7% who were moderate or heavy drinkers. It is suggested that the determination of S-GGTP might have value as a screening test for alcoholism. 6. Significant correlations have been found between weekly alcohol intake and corresponding S-GGTP, S-ASAT and S-ALAT values, 0.33, 0.20 and 0.26. respectively. 7. Multiple regression analyses confirmed the superiority of S-GGTP over S-ALAT and S-ALAT as a laboratory marker of alcohol intake and showed the advantage of using S-GGTP and S-ALAT together.

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