Annals of Occupational and Environmental Medicine

Volume 22 (4); December 2010

Original Article

Relationship between Job Stress and Depressive Symptoms among Field Firefighters: Tae Woo Kim, Kyoo Sang Kim, Yeon Soon Ahn; Korean Journal of Occupational and Environmental Medicine 2010;22(4):378-387. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.378

OBJECTIVES
To investigate the relationship between job stress and depressive symptoms among field firefighters.
METHODS
We carried out a survey of 17,457 field firefighters using the KOSS-24 (Korean Occupational Stress Scales-24) and CES-D (Center for Epidemiological Studies-Depression Scale).
RESULTS
The mean CES-D score was 12.2+/-9.6 and 19.2% of subjects had depressive symptoms. Job insecurity (OR=2.70, 95% CI=2.45~2.98) and lack of reward (OR=2.41, 95% CI=2.18~2.65), occupational climate (OR=2.38, 95% CI=2.15~2.63) were strongly associated with depressive symptoms. Job demand (OR=1.89, 95% CI=1.69~2.10), insufficient job control (OR=1.14, 95% CI=1.03~1.25), interpersonal conflict (OR=2.05, 95% CI=1.87~2.26) and organizational system (OR=1.83, 95% CI=1.66~2.02) were also significantly associated with depressive symptoms. Alcohol dependence had a stronger association than with normal subjects (OR=2.39, 95% CI=2.07~2.77).
CONCLUSIONS
In field firefighters, job stress factors and alcohol dependence were associated with depressive symptoms. An intervention to reduce job stress and alcohol among field firefighters is needed to reduce depression in this population.

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A Systematic Literature Review of Job Stress in Firefighters
Hee-Chul Choi
Fire Science and Engineering.2025; 39(1): 69. CrossRef
Effectiveness of psychological workplace counseling for South Korean employees: A longitudinal study
Hye Ryun Yang, Kyung Eun Lim, Jinmi Seol, Sung Joon Cho, Kang-Seob Oh
Precision and Future Medicine.2024; 8(3): 105. CrossRef
Comparison of the risks of occupational diseases, avoidable hospitalization, and all-cause deaths between firefighters and non-firefighters: A cohort study using national health insurance claims data
Woo-Ri Lee, Haejong Lee, Eun Woo Nam, Jin-Won Noh, Jin-Ha Yoon, Ki-Bong Yoo
Frontiers in Public Health.2023;[Epub] CrossRef
The effect of a mental health promotion program on Korean firefighters
Geun Hui Won, Jin Hyeok Lee, Tae Young Choi, Seoyoung Yoon, So Yeun Kim, Ju Hyun Park
International Journal of Social Psychiatry.2020; 66(7): 675. CrossRef
Stress Relief and Related Factors in Camp Program for Firefighters
Jungha Shin, Minyoung Sim, Junghyun H. Lee, Da Young Lee, Kyungsun Jeon, Seunga Oh, Jiae Kim, Okju Kim, Jungil Yang, Heebong Lee
Stress.2018; 26(2): 88. CrossRef
Factors associated with suicide ideation among subway drivers in Korea
Junsu Byun, Hyoung-Ryoul Kim, Hye-Eun Lee, Se-Eun Kim, Jongin Lee
Annals of Occupational and Environmental Medicine.2016;[Epub] CrossRef
The effect of organisational system on self-rated depression in a panel of male municipal firefighters
Se-Jin An, Yun Kyung Chung, Bong Hyun Kim, Kyeong Min Kwak, Jun-Seok Son, Jung-wan Koo, Young-Su Ju, Young-Jun Kwon
Annals of Occupational and Environmental Medicine.2015;[Epub] CrossRef
Correlation between Fatigue and Quality of Life Caused by Stress of Researchers' Work
Hye Joo Park, Yun Young Kim, Ki Hyun Park, Si Woo Lee, Jong-Hyang Yoo
Korean Journal of Occupational Health Nursing.2014; 23(3): 171. CrossRef
Impact of symptoms of Work-related Musculoskeletal Disorders on health related Quality of Life in firefighter under the IT environment
Gyung-Jae Oh, Jeong-Mi Lee, Chung-Yong Yang, Hyung-Ju Park, Yun-Hee Park, Chan-Uk Yoo, Eun-Yeong Kang, Bok-Hee Chong
The Journal of the Korea institute of electronic communication sciences.2014; 9(3): 311. CrossRef
Relationships of Job Stress, Fatigue & Depression among one Ship-building Supply Workers
Sang-Dol Kim
Journal of the Korea Academia-Industrial cooperation Society.2014; 15(5): 2789. CrossRef
The Associated Domains of Job Stress for the Depression among Local Public Officials
Hyun-Hee Park, So-Yeon Ryu, Bo-Eun Kim, In-Ae Chun, Myung-Guon Kim
The Journal of the Korea institute of electronic communication sciences.2013; 8(9): 1373. CrossRef
Relationship between Occupational Stress and Depression of Construction Workers
Mi-Ra Lee
Korean Journal of Occupational Health Nursing.2011; 20(3): 279. CrossRef
Effects of Perception of Job Stress and Stress Coping Style on Mental Health of Firefighters
Ho Jin Lee, Hee Sook Kim, Sang Yeon Park
Journal of Korean Academy of Psychiatric and Mental Health Nursing.2011; 20(3): 315. CrossRef

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Original Article

The Brain Pathology on Recovery of Brain MRI after Manganese Administration in Rats: Ji Hyeon Jung, Jung Il Kim, Se Young Kim, Min Ho Jung, Soon Sub Choi, Soo Jin Kim, Young Jin Park, Kap Yeol Jung; Korean Journal of Occupational and Environmental Medicine 2010;22(4):371-377. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.371

Abstract PDF: OBJECTIVES
This study was carried out to investigate the effect on manganese on the brain of Sprague-Dawley rats, with particular focus on changes to anatomical pathology when brain MRI was recovered after manganese administration.
METHODS
There were 15 rats divided into 3 groups of 5 based on dose of manganese: control group, low dose group (10 mg/kg), and high dose group (40 mg/kg). Each dosing group received an injection of normal saline and manganese via the tail vein once a week for 4 weeks. And then, the rats were observed for 12 weeks after stopping manganese administration. Next, each rat underwent a brain MRI and then each was sacrificed. After the rats were killed, the concentrations of blood manganese were measured, and pathologic examinations of the brain were performed.
RESULTS
The signal intensity of basal ganglia on T1-weighted imaging of brain MRI did not differ between dosing groups. However, the ratio of neuron/glial cell in the basal ganglia was decreased in the low- and high-dose groups compared to the control group.
CONCLUSIONS
This study showed that the damage of neuron in basal ganglia might be permanent after signal intensity of basal ganglia on T1-weighted imaging of brain MRI was recovered.

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Original Article

Current Status of Sickness Absences and Early Leaves from Work among Workers with Work-related Musculoskeletal Symptoms in Each Body Part, and Relevant Factors: Dong Hoon Lee, Shin Goo Park, Jong Han Leem, Hwan Cheol Kim, Dong Hyun Kim, Jeong Hoon Kim, Seung Jun Lee, Gee Woong Kim; Korean Journal of Occupational and Environmental Medicine 2010;22(4):364-370. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.364

Abstract PDF

OBJECTIVES
The purpose of this study was to identify current status of sickness absence and early leaves from work as a result of work-related musculoskeletal symptoms.
METHOD
From January to December in 2007, 4,975 workers were recruited into this study and surveyed over this time period; workers came from 116 small and medium sized companies in Incheon. Among the study populations, only those who met the NIOSH criteria for work-related musculoskeletal symptoms on each symptom locations were included in the final analysis. The survey used a structured self-administered questionnaire, which asked questions about musculoskeletal symptoms regarding locations, sickness absences and early leaves from work. Other information gathered from participants included sociodemographical characteristics, and work-related characteristics.
RESULTS
The rates of sickness absences and early leaves in each symptom locations were highest (14.9%) among workers with waist symptoms. Men had higher rates of sickness absences and early leaves form work than women; manufacturing workers had higher rates of sickness absences and early leaves form work than office workers. After confounding variables that had significant difference in univariate analysis on each symptom locations were adjusted, the odds ratios for sickness absence and early leaves divided by pain intensity were 4.361(neck), 4.140(shoulder), 3.151(arm/wrist), 3.085(leg/foot), and 2.731(waist), respectively; these differences were statistically significant.
CONCLUSIONS
The rates of sickness absence and early leaves in each work-related musculoskeletal symptom locations were highest among workers with waist symptoms, and the intensity of pain was identified to have a considerable effect on the rates of sickness absences and early leaves. Based on these results, we think that there are needs to be early interventions on workers with waist symptoms.

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A study on Related Factor and Knowledge of Back Pain in Workers Employed at Cement factory
Gi-Yeol Kim, Jung-Lim Oh, Kyoung-Ok Hwang
Journal of the Korea Academia-Industrial cooperation Society.2015; 16(1): 536. CrossRef
Study of the relationship between fire fighter's musculoskeletal disorder related observable symptoms and their absence from disease and accident
Seo-Yeon Choi, Il-Gyu Park, Dong-Ho Rie
Journal of the Korea Safety Management and Science.2013; 15(4): 89. CrossRef

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Original Article

Seroprevalence of Hepatitis A in a Manufacture Workplace: Hyun Soo Kim, Chang Sun Sim, Jae Kook Yoon, Hun Lee, Cheol In Yoo; Korean Journal of Occupational and Environmental Medicine 2010;22(4):356-363. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.356

Abstract PDF

OBJECTIVES
The prevalence of hepatitis A decreases with improved hygiene and changing lifestyle. However, hepatitis A remains a global problem causing sporadic food-borne infections. Over the past 5 years, hepatitis A incidence has increased, and 15 deaths were reported in 2009 in Korea. Concerns about hepatitis A infection have increased. We checked hepatitis A virus antibody (HAV anti-IgG) in a large manufacturing company, so that the results could be a guideline for workplace preventive plan and health policy for hepatitis A.
METHODS
We investigated the seroprevalence of HAV anti-IgG and the demographic characteristics of employee volunteer, in a company in Ulsan. In addition, we estimated those factors that affected seroprevalence of HAV anti-IgG.
RESULTS
A total of 2,719 employee volunteers were enrolled into the study. The seropositive rate of HAV anti-IgG was 69.8% (n=1,899) and, the seronegative rate was 30.2% (n=820). There were no enrolled employees under age 24 years who tested positive for HAV anti-IgG; in this group, the seropositive rate was 0.0% (n=0); in 25~29 years the rate was 3.9% (n=12) and 26.5% (n=118) in 30~34 years olds. In the 35-39 ears, 61.1% (n=203) tested HAV anti-IgG positive and 86.8% (n=256) of 40~44 years tested positive. Other group tested as follows: 96.5% (n=335) in 45~49 year olds, 98.7% (n=593) in 50~54 year olds, and 100% (n=382) in over 55 years. There was a significantly increasing tendency to test HAV anti-IgG positive according to age group. In the 34-35 year olds, the seropositive rate exceeded the seronegative rate.
CONCLUSIONS
HAV anti-IgG seropositive rate increased according to age. The result can used for guideline recommendationsand establishing hepatitis A policies.

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Seroprevalence of measles, mumps, rubella, and varicella-zoster antibodies in new female nurses in the Republic of Korea
Yeongjae Yoo, Won-Ju Park, Seunghyeon Cho, Dae-Young Lim, Suwhan Kim, Wonyang Kang, Hyeonjun Kim, Jai-Dong Moon
Annals of Occupational and Environmental Medicine.2021;[Epub] CrossRef

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Original Article

Association between Work Departments and Carotid Intima-media Thickness in a Metal Manufacturing Plant: Sook Jung Choi, Sei Kyun Noh, Dong Hoon Shin, In Sung Chung, Hyun Sook Bae, Mi Young Lee; Korean Journal of Occupational and Environmental Medicine 2010;22(4):345-355. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.345

Abstract PDF

OBJECTIVE: To evaluate the relationship of work departments, carotid IMT, and plaque formation as predictors of cardiovascular disease in white-collar and blue-collar workers.
METHOD
A total of 201 workers from a metal agricultural equipment manufacturing plant near Daegu were administered questionnaires to obtain information on their general characteristics, their work-related factors. In addition, the workers were given a clinical examination, which included a carotid artery ultrasonography. In total, 193 (96.0%) of questionnaires were completed and analyzed for this study. Multiple regression analysis and multiple logistic regression analysis were performed on the data for analysis.
RESULT
Blue-collar workers had thicker carotid artery IMT when compared to white-collar workers. After adjustment, the carotid IMT was affected by age, working department, hypertension, and diabetes; plaque formation was affected by age, hypertension, total cholesterol, and excessive drinking.
CONCLUSION
This study suggests that carotid IMT is associated with working department. Therefore, we need to examine the effect that occupational health services has on cardiovascular disease, focusing on the characteristics of each department.

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Cardiovascular Disease According to Job Type and Life Style
Wan-Young Yoon
Journal of Digital Convergence.2016; 14(2): 501. CrossRef

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Original Article

Respiratory Symptoms, Pulmonary Function Tests, and Asbestos Related Chest Radiograph Abnormalities of Former Asbestos Textile Factory Workers: Hyunsook Bae, Dongmug Kang, Youngki Kim, Jongeun Kim, Yunseong Kim, Kun Il Kim, Kunhyung Kim; Korean Journal of Occupational and Environmental Medicine 2010;22(4):331-344. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.331

Abstract PDF

OBJECTIVES
The objective of this study was to examine the prevalence of respiratory symptoms, asbestos-related chest radiograph abnormalities and abnormal pulmonary function tests among former asbestos textile factory workers and to reveal the related factors of these abnormal findings.
METHODS
There were 119 persons former asbestos textile industry workers registered in the health management pocketbook. Of 97 retired asbestos workers living in Busan, Yangsan and Gimhae, 63(64.9%) retired asbestos workers were enrolled into this study. The researchers administered questionnaires, and performed chest radiographys, and pulmonary function tests (PFT) on participants. The survey was conducted during July, 2009.
RESULTS
Among former workers the number of lung fibrosis, pleural plaque, pleural calcification, and pleural thickening was 13(20.6%), 6(9.5%), 3(4.8%), and 1(1.6%) in chest radiography, respectively. Asbestos-related disorders and abnormal pulmonary function test groups had higher prevalence of respiratory symptoms. Participants with crocidolite exposure or long latency period had higher asbestos-related x-ray findings or abnormal PFT findings.
CONCLUSIONS
Former asbestos textile workers had a high rate of asbestos-related disorders. Workers with crocidolite exposure or having had a longer latency period had more asbestos-related disorders. Because gradual increase of asbestos related disorders among high asbestos exposure group is expected, sustained, and intensive management is needed for these former workers.

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Asbestos exposure and autoantibody titers
Eunsoo Lee, Youngki Kim, Se Yeong Kim, Dongmug Kang
Annals of Occupational and Environmental Medicine.2020;[Epub] CrossRef
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
Environmental health centers for asbestos and their health impact surveys and activities
Dong-Mug Kang, Jong-Eun Kim, Yong-Jin Lee, Hyun-Hee Lee, Chang-yeol Lee, Seong-Jae Moon, Min-Sung Kang
Annals of Occupational and Environmental Medicine.2016;[Epub] CrossRef

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Original Article

Association of Blood Mercury Level and Neurobehavioral Performance in Korean Elementary School Students: Joon Sakong, Man Joong Jeon, Sung Ho Yun, Yun Chul Hong, Chul Gab Lee, Young Ki Kim, Mina Ha, Ho Jang Kwon; Korean Journal of Occupational and Environmental Medicine 2010;22(4):324-330. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.324

Abstract PDF

OBJECTIVES
This study was conducted to examine the effect of blood mercury on neurobehavioral performance in Korean elementary school students.
METHODS
We measured the blood mercury concentration in 1,077 elementary school students from Seoul, Busan, Daegu and Gwangju, then the students underwent computerized neurobehavioral test.
RESULTS
The mean concentration of blood mercury of study subjects was 2.10 microg/L. An increased blood mercury was associated with an increased reaction time in digit addition and symbol digit.
CONCLUSIONS
The blood mercury concentration of study subjects was very high compared to findings in a foreign country. We found several associations between blood mercury level and neurobehavioral performance.

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Young Seok Byun, Sung Kyu Park, Joon Sakong, Man Joong Jeon
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Evaluation of reliability of computerized neurobehavioral tests in Korean children
Kyeong-Soo Lee, Man-Joong Jeon, Tae-Yoon Hwang, Chang-Yoon Kim, Joon Sakong
NeuroToxicology.2012; 33(5): 1362. CrossRef

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Original Article

Association between Emotional Labor and Symptoms of Depression among Bankers: Sanghyo Chu, Hyunchul Ryou, Kyujeong Bae, Jaechul Song, Soojin Lee, Inah Kim; Korean Journal of Occupational and Environmental Medicine 2010;22(4):316-323. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.316

Abstract PDF

OBJECTIVES
We focused on the relationship between symptoms of depression and emotional labor to investigate the mental health status of workers.
METHODS
In this cross-sectional study, a total of 2,346 workers among bankers were our study subjects. A self-administered questionnaire was used to assess the socio-demographics, job characteristics, emotional labor and, the Center for Epidemiologic Studies-Depression scale (CES-D). We used multiple logistic regression analysis to estimate the relationship between emotional labor and the symptoms of depression.
RESULTS
The prevalence of symptoms of depression among the survey subjects was 20.6%. After adjusting for confounding factors, emotional effort (OR: 1.7, 95% CI=1.28~2.31) and, emotional disharmony (OR: 4.5, 95% CI=3.13~6.44) in men and emotional effort (OR: 1.9, 95% CI=1.33~2.75), emotional disharmony (OR: 6.1, 95% CI=4.12~9.09) in women showed a statistically significant association with symptoms of depression.
CONCLUSIONS
These results suggest that emotional disharmony and emotional effort are related to symptoms of depression. Managing emotional disharmony is important in managing symptoms of depression.

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Emotional Labor and Mental Health
Jae-Hon Lee
Journal of Korean Neuropsychiatric Association.2020; 59(2): 98. CrossRef
Emotional labor and job types of male firefighters in Daegu Metropolitan City
Sung Kyu Park, Han Cheol Heo, Joon Sakong, Man Joong Jeon
Annals of Occupational and Environmental Medicine.2019;[Epub] CrossRef
Relationship between concealment of emotions at work and musculoskeletal symptoms: results from the third Korean working conditions survey
Kyungyong JUNG, Dae Hwan KIM, Ji Young RYU
Industrial Health.2018; 56(5): 367. CrossRef
Emotional labor, workplace violence, and depressive symptoms in female Bank employees: a questionnaire survey using the K-ELS and K-WVS
Guang Hwi Kim, Hee Sung Lee, Sung Won Jung, Jae Gwang Lee, June Hee Lee, Kyung Jae Lee, Joo Ja Kim
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef
Emotional Labor Factors Affecting Depressive Mood in Occupational Therapists
Seo-Yeon Oh, Jung-Wan Koo
Journal of Korean Society of Occupational Therapy.2018; 26(4): 1. CrossRef
The relationship between emotional labor status and workplace violence among toll collectors
Yosub Joo, Jeongbae Rhie
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef
Association of Emotional Labor and Occupational Stressors with Depressive Symptoms among Women Sales Workers at a Clothing Shopping Mall in the Republic of Korea: A Cross-Sectional Study
Yuh-Jin Chung, Woo-Chul Jung, Hyunjoo Kim, Seong-Sik Cho
International Journal of Environmental Research and Public Health.2017; 14(12): 1440. CrossRef
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Ok-Hee Lee
Fashion business.2016; 20(1): 69. CrossRef
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Jin Hee Noh, Yeon Kyung Na
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The association between shift work and depression in hotel workers
Hyun Jey Moon, Sang Hyun Lee, Hee Sung Lee, Kyung-Jae Lee, Joo Ja Kim
Annals of Occupational and Environmental Medicine.2015;[Epub] CrossRef
The Relationship between Emotional Working Hour and Muscle Pain
Bokim Lee
Korean Journal of Occupational Health Nursing.2014; 23(4): 269. CrossRef
Emotional labor and dysmenorrhea in women working in sales and call centers
In-Jung Cho, Hyunjoo Kim, Sinye Lim, Sung-Soo Oh, Sungjin Park, Hee-Tae Kang
Annals of Occupational and Environmental Medicine.2014;[Epub] CrossRef
Fatigue and related factors among hotel workers: the effects of emotional labor and non-standard working hours
Ju Jong Lee, Hyun Jey Moon, Kyung-Jae Lee, Joo Ja Kim
Annals of Occupational and Environmental Medicine.2014;[Epub] CrossRef
Impact of emotional labor and stress coping behaviors on job strain in cosmetology industry workers
Hee Sook Cho, Lily Kang
Journal of the Korea Academia-Industrial cooperation Society.2014; 15(3): 1311. CrossRef
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Hyun-Hee Park, So-Yeon Ryu, Bo-Eun Kim, In-Ae Chun, Myung-Guon Kim
The Journal of the Korea institute of electronic communication sciences.2013; 8(9): 1373. CrossRef
The Relationships between Emotional Labour and Depressive Symptoms Among Nurses in University Hospitals
Kyung-Ok Kim, Young-Chae Cho
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Emotional Labor, Social Support, and Depressive Symptoms of Clinical Nurses in a Province, Korea
Ha-Ja Kim, Jeong-Hee Kim
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Relationship of Professional Identity, Emotional Labor and Depression in Beauty Business Workers
Li-Ly Kang, Hee-Sook Cho
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Original Article

The Effect of a Stretching Exercise on Myofascial Pain Syndrome Patients in Small and Medium Sized Industries: Jung Wook Lim, Young Jun Kwon, Tae Won Jang, Jong Heon Lee, In Seok Kim, Sang Cheol Ryu, Jae Hoon Roh, Jong Uk Won, Bong Suk Cha, Chul Ho Lee; Korean Journal of Occupational and Environmental Medicine 2010;22(4):307-315. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.307

Abstract PDF

OBJECTIVES
This study was conducted to identify the effect of a stretching exercise on myofascial pain syndrome patients that work in small and medium-sized industry.
METHODS
Questionnaires surveys including general characteristics, work-related characteristics, and musculoskeletal symptoms on neck and shoulder area was administered to 393 subjects who worked in small and medium sized industries. Symptomatic workers were examined to identify whether they had myofascial pain syndrome (MPS). Of the 393 subjects, 108 MPS patients performed 6 weeks stretching exercise program. Intensity of pain was estimated with visual analogue scales (VAS). All patients were interviewed to estimate their compliance to stretching exercise program.
RESULTS
Of the 393 workers, 119 workers were diagnosed with MPS of the neck and shoulder. Post-exercise VAS was significantly reduced compared to pre-exercise VAS (p<0.05). High compliance patients to stretching exercise were more effective to exercise therapy (OR 2.89, 95% CI 1.19~7.04), and overtime workers were less effective to exercise therapy (OR 0.41, 95% CI 0.17~0.95).
CONCLUSION
The Stretching exercise program was identified to be effective in MPS patients in small and medium-sized industries. It is recommended that workers with MPS in small and medium-sized industries practice a well-designed stretching exercise program, and avoid overtime work.

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Related Factors to Musculoskeletal Discomfort Symptoms on Some Middle·High school Teachers
Jae-Yoon Lee, Byeong-Yeon Moon, Youn-Hong Jeong, Hyun-Kyung Woo
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The Effects of Stabilization Exercise and Stretching Exercise on Muscle Strength and Pain of Patients with Lower Back Pain
Kwang-Il Kwag, Jae-Heon Lim
Journal of the Korean Academy of Clinical Electrophysiology.2011; 9(2): 39. CrossRef

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Original Article

Effects of Aircraft Noise on Children's Mental Health: Data from the Health Survey of Inhabitants in the Vicinity of Gunsan Airport: Kyeong Yeol Yu, Jae Beom Park, Kyoung Bok Min, Chan Lee, Hyun Gwon Kil, Yu Rim Jung, Kyung Jong Lee; Korean Journal of Occupational and Environmental Medicine 2010;22(4):298-306. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.298

Abstract PDF

OBJECTIVES
This study was conducted to investigate the effects of aircraft noise exposure on children's mental health problems such as depression and personality.
METHODS
We obtained data from the health examinations of school children in the vicinity of Gunsan airport. This survey was conducted in the rural area, Gunsan during 2009. The study population included 195 children attending 4th to 6th grade from 6 elementary schools near the airport. Based on 60 Weighted Equivalent Continuous Perceived Noise Level (WECPNL) measures of aircraft noise, participants were divided into 2 groups; the exposure group consisted of 106 children from 4 schools, and the reference group included 89 children from the 2 schools in Gunsan. All children completed questions on general characteristics, the Korean Children's Depression Inventory (KCDI) for depression, and the Korea Human Nature Inspection (KHNI) for personality.
RESULTS
Children in the exposure group were at higher risk of depression (5.62, 95% CI 1.12~28.25), and personality changes (2.08, 95% CI 1.07~4.05) than those of the reference group. In particular, children's diligence, cooperation, and concentration, subgroups of personality measure, were affected significantly and negatively, by aircraft noise level.
CONCLUSIONS
Our results suggest that exposure to aircraft noise at school is associated with mental health problems in children. Requirements should be implemented to manage aircraft noise of its affect on children's health.

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Myoungjin Oh, Kwangsoo Shin, Kyungah Kim, Jungwoo Shin
Science of The Total Environment.2019; 651: 1867. CrossRef
Effects of APU Noise on Employees on the Ramp
Sung-Jae Park
Journal of the Korea Academia-Industrial cooperation Society.2016; 17(7): 720. CrossRef

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Clinical Trial

A Pilot Study on the Validity and Reliability of the Korean Version of the Oswestry Disability Index in a Farming Community: No Yul Yang, Hae Yean Park, Jin Su Kim, Joo Hyun Lee, Soo Hyun Park, Min Ye Jung, Sang Baek Koh; Korean Journal of Occupational and Environmental Medicine 2010;22(4):290-297. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.290

Abstract PDF

OBJECTIVES
The Korean version of the Oswestry Disability Index (ODI) is the most widely used tool validated instrument for measuring and the level of disability associated with low back disorders. We wanted to validate use of the Korean version of the ODI in Korean farmers with low back pain.
METHODS
The object of this study was to examine the reliability and validity of the Korean version of the ODI. The Korean version was tested on 53 farmers (62.3+/-10.3 years of age) with low back-related disorders. We investigated the Test-retest reliability, internal consistency, and construct validity of the ODI. The Test-retest reliability was assessed in 30 farmers within a time interval of approximately 14 to 18 days. Differences between the Korean version of the ODI and the Short Form 12 (SF-12), which includes 8 domains (general health, physical functioning, role-physical limitation, bodily pain, role-emotional limitation, mental health, vitality, social functioning) were analyzed for construct validity. The correlation of the Korean version of the ODI with the SF-12 was analyzed, as well.
RESULTS
The intra-class correlation coefficient of test-retest reliability was 0.854. Reliability estimated by the internal consistency reached a Cronbach's alpha of 0.879. The correlation between 7 domains of the SF-12 except for the mental health domain and the Korean version of the ODI was statistically significant (p<0.05). Four domains (general health, physical functioning, role-physical limitation, bodily pain) that measured physical status all showed high correlations (p<0.01), as did a domain that measured mental status (role-emotional limitation) (p<0.01).
CONCLUSIONS
The results showed that the Korean version of the ODI is a reliable and valid instrument to measure the level of disability in Korean farmers with low back-related disorders. The use of this instrument is recommended for future clinical trials in Korea.

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Original Article

Radiological Flattening of Lumbar Lordosis and Related Factors in Some Korean Farmers: Han Soo Song, Sang Kon Yoo, Chang Ki Choi, Chul Gab Lee, Kyung Suk Lee; Korean Journal of Occupational and Environmental Medicine 2010;22(4):279-289. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.279

Abstract PDF

OBJECTIVES
To determine if agricultural work is related to radiological flattening of lumbar lordosis, and to identify the relationship between of back pain and flat back in selected Korean farmers.
METHODS
Between June 2006 and July 2008, 414 farmers, 155 (37.4%) males and 259 (62.6%) females participated in this study. We collected data on hazardous agricultural work postures and other factors from interviews, surveys, and x-ray views of lateral lumbar. The operational definition of a flat back was below -1 SD of lordotic angle, with a normal distribution between L1 and S1 level. Logistic regression analysis was conducted to evaluate the relationship between flat back and hazardous working posture ratio, sex, the severity of back pain.
RESULTS
Mean lordotic angle was 42.9+/-15.7degrees. Flat back had a higher prevalence in the females (24.7%) than the males (5.8%). The odds ratio of flat back risk is 3.30 (95% CI: 1.46~7.46) in the females compared to the males, 1.31 (95% CI: 0.61~2.79), 4.11 (95% CI: 1.77~9.55) in the group of hazardous working posture ratio compared to the low risk group, 2.78 (95% CI: 1.27~6.07), 5.74 (95% CI: 2.27~14.49) in the group of L4-L5 disc space narrowing compared to normal group, 3.06 (95% CI: 1.27~7.31), 5.45 (95% CI: 1.70~17.46) in the group of lumbar spine compression fracture compared to no fracture. Odds ratio of severe back pain is 2.29 (95% CI: 1.12~4.72) in the group of flat back compared to normal group.
CONCLUSIONS
Hazardous agricultural working postures, such as 'low- lifting, pulling, pushing work and high- squatting posture work' are associated with flat back. Low back pain is significantly associated with flat back group in female farmers.

Citations

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