Annals of Occupational and Environmental Medicine

Special Article

Approval status and characteristics of work-related musculoskeletal disorders among Korean workers in 2020: Eun-woo Cha, Sae-mi Jung, Il-ho Lee, Dae Hwan Kim, Eui Hyek Choi, In-ah Kim, Yong-kyu Kim, Kyung-joon Lee, Yang Won Kang, Ho-gil Kim, Young-ki Kim; Ann Occup Environ Med 2022;34:e31. Published online October 26, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e31

Abstract Abstract in Korean PDF PubReader ePub

Background

This study aimed to investigate the characteristics of work-related musculoskeletal disorders (WRMSDs) in occupational disease claims and identify patterns of WRMSDs for each body part by industry and occupation.

Methods

This study analyzed the raw data of occupational disease claims for musculoskeletal disorders deliberated by the Occupational Disease Decision Committee of the Korea Workers’ Compensation & Welfare Service in 2020. The data was classified into 6 body parts with the highest numbers of occupational disease cases by using the complete enumeration data on principal diagnoses and 4 types of subdiagnoses in the raw data. The characteristics and approval rates of WRMSDs by body part, industry and occupation were examined and summarized.

Results

A total of 13,015 occupational disease cases for WRMSDs were classified, and lumbar spinal (back) diseases accounted for the largest proportion of claimed diseases, followed by shoulder, elbow, wrist, knee, and neck diseases in a descending order. The occupations with the highest and second highest numbers of occupational disease cases by body part were found to be automobile assemblers and production-related elementary workers for the neck, school meal service workers and cooks for the back, construction frame mold carpenters and school meal service workers for the shoulder, elementary workers in mining and food service workers for the elbow, food service workers and automobile parts assemblers for the wrist, and ship welders and school meal service workers for the knee.

Conclusions

This study examined the characteristics and approval status of WRMSDs by body part and occupation. Based on the study results, management strategies for the prevention of WRMSDs should be established regarding occupations with a high risk of WRMSDs for each body part.

업무상 근골격계질환의 2020년 산업재해 승인 현황과 특성
목적
본 연구는 업무 관련 근골격계 질환(WMSD)의 특성과 신체 부위에 따른 업종 및 직종별 WMSD 승인율을 분석하기 위해 실시됐다.
방법
2020년 근로복지공단 업무상질병판정위원회에서 심의된 근골격계질환 신청건의 원자료를 활용하여 분석하였다. 원자료의 주상병과 네가지 부상병 정보 전수를 활용하여, 상병신청건수가 많은 6개의 신체부위로 구분하였다. 각 부위별로 업종 및 직종에 대하여 특성과 승인율을 정리 하였다.
결과
WMSD 신청건수는는 총 13015건이 분류되었고, 이중 요추질환이 가장많았고, 어깨, 팔, 손목, 무릎, 경추 순으로 이어졌다. 부위별로 신청건수가 많았던 직종으로 경추는 자동차조립, 제조관련단순종사원, 요추는 급식조리사, 조리사, 어깨는 건설형틀목공, 급식조리사, 팔은 광업단순종사원, 급식조리사, 손목은 급식조리사, 자동차부품조립, 무릎은 조선용접공, 급식조리사로 조사됐다.
결론
신체 부위별 직종에 따른 WMSD의 특성 및 승인율 등을 살펴보았다. 이러한 결과를 바탕으로 신체 부위별 고위험 직종에 대하여 WMSD 예방을 위한 관리 전략이 수립되어야 한다.

Citations

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Self-Esteem Trajectories After Occupational Injuries and Diseases and Their Relation to Changes in Subjective Health: Result From the Panel Study of Workers’ Compensation Insurance (PSWCI)
Seong-Uk Baek, Won-Tae Lee, Min-Seok Kim, Myeong-Hun Lim, Jin-Ha Yoon, Jong-Uk Won
Journal of Korean Medical Science.2023;[Epub] CrossRef
Prevalence of work-related musculoskeletal disorders among workers in the automobile manufacturing industry in China: a systematic review and meta-analysis
Xiongda He, Bin Xiao, Junle Wu, Chunshuo Chen, Wankang Li, Maosheng Yan
BMC Public Health.2023;[Epub] CrossRef

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Research Article

Distribution of age, gender, and occupation among individuals with carpal tunnel syndrome based on the National Health Insurance data and National Employment Insurance data: Il-Ho Lee, Young-Ki Kim, Dong-Mug Kang, Se-Yeong Kim, In-Ah Kim, Eun-Mi Kim; Ann Occup Environ Med 2019;31:e31. Published online November 7, 2019; DOI: https://doi.org/10.35371/aoem.2019.31.e31

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Background

The present study aimed to investigate the basic characteristics of carpal tunnel syndrome (CTS) and its differences between occupations using Korea's National Health Insurance (NHI) and National Employment Insurance (NEI).

Methods

The study participants were obtained from the NEI and NHI data from 2008 to 2015, with a diagnosis code of G560 (CTS) as the main or sub-diagnosis. Data about gender, age, diabetes mellitus, smoking, drinking, and length of employment, information about type of occupation, and number of employees according to age and occupation were obtained from NHI and NEI data. In total, 240 occupations were classified into blue-collar (BC) and white-collar (WC) work. In addition, each occupation was classified as high-risk and low-risk groups depending on the degree of wrist usage.

Results

The number of patients with CTS per 100,000 individuals increased with advancing age, and it was higher in women (4,572.2) than in men (1,798.5). Furthermore, the number was higher in BC workers (3,247.5) than in WC workers (1,824.1) as well as in the high-risk group than in the low-risk group in both BC workers (3,527.8 vs. 1,908.2) and WC workers (1,829.9 vs. 1,754.4). The number of patients with CTS was higher in the high-risk group than in the low-risk group among male and female BC workers and female WC workers. However, the number was higher in the low-risk group among male WC workers. In the BC category, the number of patients with CTS was highest among food processing-related workers (19,984.5). In the WC category, the number of patients with CTS was highest among social workers and counselors (7,444.1).

Conclusions

The results of this study are expected to help identify occupational differences in patterns of CTS. High number of patients with CTS was seen in new jobs, as well as in previous studies.

Citations

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Development and validation of a clinical model for predicting the severity of carpal tunnel syndrome
Behnaz Aalaie, Javad Sadeghi, Tanya Mohammadi, Babak Mohammadi
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Occupational Risk Factor for Carpel Tunnel Syndrome Related to Computer Usage: A Descriptive Cross-Sectional Study
Tallat Anwar Faridi, Neha Justin, Mishal John, Aman Badar, Naveen Faheem
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Worldwide prevalence of carpal tunnel syndrome among dental health care personnel - A systematic review and meta-analysis
Deepika Chenna, Medhini Madi, Mathangi Kumar, Vijay Kumar, Sitaram Chopperla, Abhinav Tadikonda, Kalyana Pentapati
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Meta-analysis of the prevalence of Carpal Tunnel Syndrome (CTS) among dental health care personnel
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The effectiveness of biophysical agents in the treatment of carpal tunnel syndrome- an umbrella review
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Prevalence and risk factors for self-reported symptoms of carpal tunnel syndrome among hospital office workers: a cross-sectional study
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Research Article

The roles of doctors, nurses, and industrial hygienists in the healthcare management services in Korea: a comparison of the opinions of specialized health management institutions and entrusted enterprises: Bo-Young Jang, Dong-Mug Kang, Young-Ki Kim, Se-Young Kim, Kyung-Sun Ko; Ann Occup Environ Med 2018;30:50. Published online August 7, 2018; DOI: https://doi.org/10.1186/s40557-018-0261-9

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Background

This study aimed to identify the difference of perception about the role of appointing health officers by comparing and analyzing the response of entrustment workplace (EW) and specialized health management institution (SI). This is considered an important aspect of an institutional assessment to improve the quality of health management services.

Methods

A survey questionnaire was mailed to 122 SIs and 319 EWs nationwide. The questionnaire survey was about the general characteristics of SIs and EWs and main occupations for each evaluation item. In total, 81 SIs (66.4%) and 30 EWs responded to the questionnaire. A logistic regression analysis was performed to compare the opinions of SI and EW.

Results

Based on the analysis, the items showing statistically significant differences were as follows. Doctors’ main tasks survey: “Guidance on their wearing personal protective equipment (PPE)” (OR: 4.58), “Guidance of improvement of work environment (WE)” (OR: 3.33), etc.; Nurses’ main tasks survey: “Guidance on their wearing PPE” (OR: 3.86), “Guidance for programs on health process in confined space (CS)” (OR: 0.36), “Guidance on the hearing conservation program (HCP)” (OR: 0.28), etc.; Industrial hygienist (IH)‘s main tasks survey: “Guidance of work through inspection (WTI)” (OR: 0.15), “Guidance on the improvement of WE” (OR: 0.32), “Management confirmation of substances used by process and Material Safety Data Sheet (MSDS)” (OR: 0.08), “Guidance on posting or keeping of MSDS and warning signs” (OR: 0.03), “Prevention of dust-induced medical problems” (OR: 0.28), “Guidance for programs of health process in CS” (OR: 0.39), etc.

Conclusions

It is necessary to educate the EWs to recognize the need for physicians to perform tasks, such as wearing a PPE, and instruction to improve WE. As for nurses’ tasks, such as education about the CS and the noise work, educating the nurses of the SI is regarded necessary as the demand of the EWs is considered. With respect to the unique tasks of IH, such as WE management and instructions for wearing PPE, among several other tasks of IH, training should be provided for improved IH recognition.

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Underestimation of smoking hazards and smoking cessation intervention efficiency among healthcare professionals: A cross-sectional study among Korean occupational health nurses
Jihye Lee, Saerom Lee, Woncheol Lee, Seung Hyeun Lee, Won Gun Kwack, Young Joong Kang
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The Current Status of the Administrative Dispositions of Nurses: A Nationwide Survey in South Korea
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Occupational health nurses’ personal attitudes toward smoking: A cross-sectional study
Jihye Lee, Saerom Lee, Minkyu Lee, Young Joong Kang
Journal of Occupational Health.2021;[Epub] CrossRef

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Research Article

Characteristics of occupational musculoskeletal disorders of five sectors in service industry between 2004 and 2013: Hyun-Woo Choi, Young-Ki Kim, Dong-Mug Kang, Jong-Eun Kim, Bo-Young Jang; Ann Occup Environ Med 2017;29:41. Published online September 19, 2017; DOI: https://doi.org/10.1186/s40557-017-0198-4

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Background

‘Work related musculoskeletal disorders (WRMSDs)’ have been mostly reported in the manufacturing industry but recently the occurrence of industrial injuries has been constantly increasing in the service industry. This research is going to analyze the data about workers’ compensation for WRMSDs in five different service sectors and identify characteristics of occupations with the highest approved occupations.

Methods

According to the data released from the Korea Worker’s Compensation & Welfare Service, the overview of 12,730 cases of workers’ compensation for WRMSDs in five service sectors from 2004 to 2013 is going to be analyzed and the source data is going to be classified by the Korean Standard Classification of Occupations to select the top five occupations that have the highest number of approval.

Results

After selecting each five occupations from the service sector that have work related musculoskeletal disorders, the result showed that the occupation with the highest number of approval in the health and social care sector were the early childhood educators, cooks in the school canteens in education services sector, garbage collectors in the sanitation and similar services sector, deliverymen in wholesale and retail, consumer goods repair and building cleaners in general management businesses such as those in building maintenance. The major event observed in the top five occupations was the overexertion and reaction as a cause of WRMSDs. The day when the WRMSDs mostly occurred was on Monday and the most likely time was 10 am. The median days away from work and lost working days are 29–90 days and 0–50 days respectively. The difference in each occupation was observed in year of service, age, and gender.

Conclusions

83.21% of the approved cases of workers’ compensation for WRMSDs occurred in the top 25 occupations in all of the five service sectors, which meant that the approval of workers’ compensation is concentrated in specific occupations. This research is going to suggest preventive measures for work related musculoskeletal disorders in the service industry and to help prioritize the preventive measures.

Trial registration

Not applicable.

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Case Report

Risk assessment of gastric cancer associated with asbestosis: a case report: Soo-Hong Park, Dong-Mug Kang, Bon-Hak Koo, Young-Ki Kim, Jong-Eun Kim; Ann Occup Environ Med 2015;27:9. Published online March 13, 2015; DOI: https://doi.org/10.1186/s40557-015-0061-4

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Background

The International Agency for Research on Cancer classifies asbestos as belonging to Carcinogen Group 2A for gastric cancer. We herein report a case of gastric cancer associated with asbestosis and describe the work-related and risk assessments of asbestos exposure for gastric cancer.

Case presentation

The 66-year-old male patient in our case worked in asbestos spinning factories. His level of cumulated asbestos fiber exposure was estimated to be 38.0–71.0 f-yr/cc. Thus, the Excess Life Cancer Risk for lung cancer associated with asbestos exposure was 9,648×10⁻⁵, almost 9,600 times the value recommended by the United States of America Environmental Protection Agency (1 × 10⁻⁵). The relative risk of developing lung cancer for this patient was more than 25 f-yr/cc, a well-known criterion for doubling the risk of lung cancer.

Conclusion

The patient’s exposure to high-dose asbestos was sufficient to increase his risk of gastric cancer because as the risk of lung cancer increased, the risk of gastric cancer was due to increase as well. Therefore, occupational asbestos fiber exposure might be associated with gastric cancer in this case.

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Research Article

Work-relatedness of lung cancer by smoking and histologic type in Korea: Young-Il Lee, Sang-Gil Lee, Dong-Mug Kang, Jong-Eun Kim, Young-Ki Kim, Jong-Han Leem, Hwan-Cheol Kim; Ann Occup Environ Med 2014;26:43. Published online December 1, 2014; DOI: https://doi.org/10.1186/s40557-014-0043-y

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Objectives

This study investigated the distribution of causative agents related to occupational lung cancer, their relationships with work, and associations between work-relatedness and the histologic type of lung cancer.

Methods

We used data from the occupational surveillance system in Korea in 2013. In addition, data from 1,404 participants diagnosed with lung cancer were collected through interviews. We included the patients’ longest-held job in the analysis. Work-relatedness was categorized as “definite,” “probable,” “possible,” “suspicious,” “none,” or “undetermined.”

Results

Among the subjects, 69.3% were men and 30.7% were women. Regarding smoking status, current smokers were the most prevalent (35.5%), followed by non-smokers (32.3%), ex-smokers (32.2%). Regarding the causative agents of lung cancer, asbestos (1.0%) and crystalline silica (0.9%) were the most common in definite work-related cases, while non-arsenical insecticide (2.8%) was the most common in probable cases followed by diesel engine exhaust (1.9%) and asbestos (1.0%). Regarding histologic type, adenocarcinoma was the most common (41.7%), followed by squamous cell carcinoma (21.2%). Among current smokers, squamous cell carcinoma was the most common among definite and probable cases (13.4%), while non-small cell lung cancer was the least common (7.1%). Among non-smokers, squamous cell carcinoma was the most common (21.4%), while the least common was adenocarcinoma (1.6%).

Conclusions

Approximately, 9.5% of all lung cancer cases in Korea are occupational-related lung cancer. Well-known substances associated with lung cancer, such as crystalline silica, asbestos, and diesel engine exhaust, are of particular concern. However, the histologic types of lung cancer related to smoking were inconsistent with previous studies when work-relatedness was taken into account. Future studies are required to clarify the incidence of occupational lung cancer in agricultural workers exposed to non-arsenical insecticides and the associations between work-relatedness and the histologic type of lung cancer.

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Editorial

Prevention of Work-Related Musculoskeletal Disorders: Dongmug Kang, Young-Ki Kim, Eun-A Kim, Dae Hwan Kim, Inah Kim, Hyoung-Ryoul Kim, Kyoung-Bok Min, Kyunghee Jung-Choi, Sung-Soo Oh, Sang-Baek Koh; Ann Occup Environ Med 2014;26:14-14. Published online June 24, 2014; DOI: https://doi.org/10.1186/2052-4374-26-14

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Approval status and characteristics of work-related musculoskeletal disorders among Korean workers in 2020
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Research Article

Long Working Hours and Emotional Well-Being in Korean Manufacturing Industry Employees: Kyoung-Hye Lee, Jong-Eun Kim, Young-Ki Kim, Dong-Mug Kang, Myeong-Ja Yun, Shin-Goo Park, Jae-Seok Song, Sang-Gil Lee; Ann Occup Environ Med 2013;25:38-38. Published online December 5, 2013; DOI: https://doi.org/10.1186/2052-4374-25-38

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Objectives

Korea is well known for its long work hours amongst employees. Because workers of the manufacturing industry are constantly exposed to extended work hours, this study was based on how long work hours affect their emotional well-being.

Methods

The analysis was done using the secondary Korean Working Condition Survey (KWCS). Long work hours were defined to be more than 48 hours, and they were subcategorized into units of 52 hours and 60 hours. Based on the WHO (five) well-being index, emotional state was subdivided into three groups - reference group, low-mood group, and possible depression group- where 28 points and 50 points were division points, and two groups were compared at a time. Association between long work hours and emotional state was analyzed using binary and multinomial logistic regression analysis.

Results

Working for extended working hours in the manufacturing industry showed a statistically significant increase (t test p < 0.001) in trend among the possible depression group when compared to the reference group and the low-mood group. When demographical characteristics, health behaviors, socioeconomic state, and work-related characteristics were fixed as controlled variables, as work hours increased the odds ratio of the possible depression group increased compared to the reference group, and especially the odds ratio was 2.73 times increased for work hours between 48–52 and 4.09 times increased for 60 hours or more and both were statistically significant. In comparing the low-mood group and possible depression group, as work hours increased the odds ratio increased to 1.73, 2.39, and 4.16 times, and all work hours from working 48–52 hours, 53–60 hours, and 60 hours or more were statistically significant. Multinomial logistic regression analysis also showed that among the reference group and possible group, the possible depression group was statistically significant as odds ratio increased to 2.94 times in working 53–60 hours, and 4.35 times in 60 hours or more.

Conclusions

Long work hours have an adverse effect on emotional well-being. A more diversified research towards variables that affect long work hours and emotional well-being and how they interact with each other and their relationship to overall health is imperative.

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Case Report

Multiple chemical sensitivity caused by exposure to ignition coal fumes: a case report: Myeong-Ja Yun, Dong-Mug Kang, Kyoung-Hye Lee, Young-Ki Kim, Jong-Eun Kim; Ann Occup Environ Med 2013;25:32-32. Published online November 1, 2013; DOI: https://doi.org/10.1186/2052-4374-25-32

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Background

Although multiple chemical sensitivity (MCS) is a well-known disorder caused by environmental exposures, MCS caused by occupational exposure has been reported in Korea. Therefore, we report a MCS case caused by environmental exposure to ignition coal after a differential diagnosis to exclude other diseases.

Case report

Since 2011, a 55-year-old woman had experienced edema, myalgia, and other symptoms when she smelled ignition coal near her workplace. She had been diagnosed with fibromyalgia syndrome(FMS) and was treated, with no improvement of symptoms. Since then, she showed the same symptoms after exposure to city gas, the smell of burning, and exhaust gas. To avoid triggering substances, she moved to a new house and used an air purifier. She quit her job in November 2012. After visiting our hospital, she underwent a differential diagnosis for FMS, chronic fatigue syndrome, and somatization disorder. She was diagnosed with MCS by the Korean version of the Quick Environment Exposure Sensitivity Inventory (QEESI). She was educated about the disease and to avoid triggering substances. She received ongoing treatment for her symptoms.

Conclusion

This case showed that symptoms began after smelling ignition coal. After that, her triggers was increased such as the smell of city gas, burning, and exhaust gas. This case is the first reported in Korea of MCS due to environmental exposure after ruling out other diseases.

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Review

Systematic Review of the Effects of Asbestos Exposure on the Risk of Cancer between Children and Adults: Dongmug Kang, Min-Seung Myung, Young-Ki Kim, Jong-Eun Kim; Ann Occup Environ Med 2013;25:10-10. Published online July 8, 2013; DOI: https://doi.org/10.1186/2052-4374-25-10

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Children are considerably more susceptible to enviro006Emental hazards than adults. This study was conducted to investigate whether the first asbestos exposure in childhood increases the risk of asbestos-related cancer including mesothelioma and lung cancer. MEDLINE (PubMed), Embase, and Google Scholar were searched to find relevant studies published up to July 2012. Six studies reported the relationship between age, including age during childhood, at the first asbestos exposure and mesothelioma. Among them, 4 indicated that people exposed to asbestos in childhood have a higher risk of mesothelioma than those exposed in adulthood. Meanwhile, the other 2 studies showed that asbestos exposure later in life increases the risk of mesothelioma. The results of the 2 studies including non-occupational early childhood exposure report conflicting results. There were 3 studies regarding the relationship between age at first asbestos exposure and lung cancer. However, none of them reported an association between age at first asbestos exposure and the risk of lung cancer. All studies have limitations including small numbers of subjects, the validity of the standardized mortality ratio, and different age categories at first asbestos exposure. There are only a few studies on the harmful effects of asbestos in children in the literature. Therefore, the effect of asbestos exposure during childhood remains unclear and requires further study.

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