Descriptive analysis of prevalence and medical expenses of cancer, cardio-cerebrovascular disease, psychiatric disease, and musculoskeletal disease in Korean firefighters

A case of acute organic solvent poisoning during epoxy coating

BACKGROUND: In the construction industry, maintaining health and safety of workers often challenging. Among the workers at construction sites, painters are at particular risk of respiratory diseases and neurotoxicity. However, in Korea there is weak enforcement of workers' health and safety practices in the construction industry in Korea. Poisonings frequently occur at (semi)closed construction sites. In this study, we report a case of acute organic solvent poisoning during construction site painting. CASE PRESENTATION: A 71-year-old man was found unconscious at a construction site and immediately transferred to the emergency room. The consciousness level was 'stupor state' and the body temperature was hypothermic, at 32 degrees (Celsius). There were no acute brain or cardiac lesions that would have accounted for the faintness. In addition, blood and urine tests did not indicate a cause of loss of consciousness. He had been painting epoxy to waterproof the basement floor before fainting. According to exposure simulation, the patient was overexposed to various organic solvents, such as approximately 316–624 ppm toluene during the work before fainting. Considering the ventilation status of the workplace and the status of no protection, it is considered that exposure through the respiratory tract was considerable. CONCLUSIONS: The patient in this case lost consciousness during the epoxy coating in a semi-enclosed space. It can be judged as a result of acute poisoning caused by organic solvent exposure and considered to be highly related to work environment.

The Fourth Industrial Revolution and Its Impact on Occupational Health and Safety, Worker's Compensation and Labor Conditions

The “fourth industrial revolution” (FIR) is an age of advanced technology based on information and communication. FIR has a more powerful impact on the economy than in the past. However, the prospects for the labor environment are uncertain. The purpose of this study is to anticipate and prepare for occupational health and safety (OHS) issues.In FIR, nonstandard employment will be common. As a result, it is difficult to receive OHS services and compensation. Excessive trust in new technologies can lead to large-scale or new forms of accidents. Global business networks will cause destruction of workers' biorhythms, some cancers, overwork, and task complexity. The social disconnection because of an independent work will be a risk for worker's mental health. The union bonds will weaken, and it will be difficult to apply standardized OHS regulations to multinational enterprises.To cope with the new OHS issues, we need to establish new concepts of "decent work” and standardize regulations, which apply to enterprises in each country, develop public health as an OHS service, monitor emerging OHS events and networks among independent workers, and nurture experts who are responsible for new OHS issues.

Descriptive analysis of prevalence and medical expenses of cancer, cardio-cerebrovascular disease, psychiatric disease, and musculoskeletal disease in Korean firefighters

BACKGROUND@#Firefighters are exposed to many dangerous working conditions. Many studies have identified the risk of disease for firefighters, but only a few studies have addressed the medical expenses of firefighters, which represents a concrete scale of disease. Our purpose in this study was to determine the medical expenditures of firefighters to assess the overall scale of disease in Korea. We focused on cancer, mental disorders, cardio-cerebrovascular disease, and musculoskeletal disease, the prevalence of which was expected to be high in firefighters.@*METHODS@#This study utilized National Health Insurance Service data. We targeted firefighters, police officers, and government officials. We classified disease based on the 10th revision of the International Statistical Classification of Diseases and Related Health Problems codes. We compared prevalence by the age-standardized prevalence rate, considering standard distribution of the population. Medical expenditure of disease was defined as outpatient fees, hospitalization fees, and drug costs. Total medical expenditures were calculated by the sum of those 3 categories.@*RESULTS@#The age-standardized prevalence of cancer, mental disorders, and cardiovascular disease in firefighters was slightly higher than or similar to that of government officials and police officers (no significant difference). However, medical expenditures for stomach cancer, mental disorders, and most cardio-cerebrovascular diseases were higher in firefighters than in others. In particular, firefighters spent 12 times more money for ischemic heart disease than did government officials. Of musculoskeletal diseases, lumbar disc disorder had the highest expenditures among firefighters.@*CONCLUSIONS@#The age-standardized prevalence of most of diseases of firefighters was not as high as in the other groups, but the medical expenses of firefighters were much higher than those of government officials and police officers.

Descriptive analysis of prevalence and medical expenses of cancer, cardio-cerebrovascular disease, psychiatric disease, and musculoskeletal disease in Korean firefighters

BACKGROUND@#Firefighters are exposed to many dangerous working conditions. Many studies have identified the risk of disease for firefighters, but only a few studies have addressed the medical expenses of firefighters, which represents a concrete scale of disease. Our purpose in this study was to determine the medical expenditures of firefighters to assess the overall scale of disease in Korea. We focused on cancer, mental disorders, cardio-cerebrovascular disease, and musculoskeletal disease, the prevalence of which was expected to be high in firefighters.@*METHODS@#This study utilized National Health Insurance Service data. We targeted firefighters, police officers, and government officials. We classified disease based on the 10th revision of the International Statistical Classification of Diseases and Related Health Problems codes. We compared prevalence by the age-standardized prevalence rate, considering standard distribution of the population. Medical expenditure of disease was defined as outpatient fees, hospitalization fees, and drug costs. Total medical expenditures were calculated by the sum of those 3 categories.@*RESULTS@#The age-standardized prevalence of cancer, mental disorders, and cardiovascular disease in firefighters was slightly higher than or similar to that of government officials and police officers (no significant difference). However, medical expenditures for stomach cancer, mental disorders, and most cardio-cerebrovascular diseases were higher in firefighters than in others. In particular, firefighters spent 12 times more money for ischemic heart disease than did government officials. Of musculoskeletal diseases, lumbar disc disorder had the highest expenditures among firefighters.@*CONCLUSIONS@#The age-standardized prevalence of most of diseases of firefighters was not as high as in the other groups, but the medical expenses of firefighters were much higher than those of government officials and police officers.

Does formaldehyde have a causal association with nasopharyngeal cancer and leukaemia?

BACKGROUND: The South Korean criteria for occupational diseases were amended in July 2013. These criteria included formaldehyde as a newly defined occupational carcinogen, based on cases of “leukemia or nasopharyngeal cancer caused by formaldehyde exposure”. This inclusion was based on the Internal Agency for Research on Cancer classification, which classified formaldehyde as definite human carcinogen for nasopharyngeal cancer in 2004 and leukemia in 2012. METHODS: We reviewed reports regarding the causal relationship between occupational exposure to formaldehyde in Korea and the development of these cancers, in order to determine whether these cases were work-related. RESULTS: Previous reports regarding excess mortality from nasopharyngeal cancer caused by formaldehyde exposure seemed to be influenced by excess mortality from a single plant. The recent meta-risk for nasopharyngeal cancer was significantly increased in case-control studies, but was null for cohort studies (excluding unexplained clusters of nasopharyngeal cancers). A recent analysis of the largest industrial cohort revealed elevated risks of both leukemia and Hodgkin lymphoma at the peak formaldehyde exposure, and both cancers exhibited significant dose-response relationships. A nested case-control study of embalmers revealed that mortality from myeloid leukemia increased significantly with increasing numbers of embalms and with increasing formaldehyde exposure. The recent meta-risks for all leukemia and myeloid leukemia increased significantly. In South Korea, a few cases were considered occupational cancers as a result of mixed exposures to various chemicals (e.g., benzene), although no cases were compensated for formaldehyde exposure. The peak formaldehyde exposure levels in Korea were 2.70–14.8 ppm in a small number of specialized studies, which considered anatomy students, endoscopy employees who handled biopsy specimens, and manufacturing workers who were exposed to high temperatures. CONCLUSION: Additional evidence is needed to confirm the relationship between formaldehyde exposure and nasopharyngeal cancer. All lymphohematopoietic malignancies, including leukemia, should be considered in cases with occupational formaldehyde exposure.

The relationship between night work and breast cancer

BACKGROUND: Since the International Agency for Research on Cancer classified shift work that involves circadian disruption as “probably carcinogenic to humans,” there has been growing concern on the relationship between night work and breast cancer. In Korea, about 10–15% of workers are engaged in night-shift work, and breast cancer is one of the most common cancers in women. The purpose of this study was to review epidemiologic evidence on the relationship between night work and breast cancer. METHODS: We reviewed 21 original articles and 5 meta analyses on relationship between nightwork and breast cancer, and investigated the compensation criteria of Denmark. RESULTS: The association between breast cancer and night work has been reported by numerous epidemiologic studies, including cohort studies, case-control studies, and meta-analysis. However, a dose-response relationship has not clearly emerged among workers exposed to less than 20 years of night work. CONCLUSION: Although there are some limitations to the epidemiological studies so far, further consideration of breast cancer cases in patients with high exposure to night work is needed to assess breast cancer as a work-related disease.

Guidelines for recognition of occupational cancers in Korea: the results of scientific review by Korean Society of Occupational and Environmental Medicine (2013–2016)

This thematic collection includes the articles to review eleven occupational cancer related risks or working conditions and to propose the guidelines of S. Korea.

Correction to: Guidelines for recognition of occupational cancers in Korea: the results of scientific review by Korean Society of Occupational and Environmental Medicine (2013–2016)

The authors flagged that the spelling of author YangHo Kim was incorrect. It is published on the original manuscript as Yang Ho Kim, but should be spelt YangHo Kim.

A case of laryngeal cancer induced by exposure to asbestos in a construction site supervisor

BACKGROUND: Construction site supervisors are exposed to many chemicals, dusts, and metals including asbestos. Asbestos is a hazardous chemical that is carcinogenic. Laryngeal cancer is not a rare disease in Korea. The most common causes of this disease are tobacco and alcohol, and representative occupational cause is asbestos. However, up to now, no case of laryngeal cancer induced by asbestos has been reported in Korea. In this study, we report such a case in a construction site supervisor. CASE PRESENTATION: A 60-year-old man who had been experiencing hoarseness for 2 months was diagnosed with laryngeal cancer. The pathologic diagnosis was squamous cell carcinoma in situ, based on examination of a biopsy specimen obtained by resection of the lesion. The patient had been exposed to asbestos for 38 years at construction sites where he worked until diagnosed with laryngeal cancer. He had been exposed to asbestos when demolishing buildings and inspecting materials. CONCLUSION: The patient in this case worked with construction materials including asbestos and supervised construction for 38 years, and was thus exposed to asbestos at construction sites. Much of the asbestos was highly concentrated especially during demolition processes. We therefore consider the laryngeal cancer of this patient to be a work-related disease.

Work-Related Asthma in Korea - Findings from the Korea Work-Related Asthma Surveillance (KOWAS) program, 2004-2009

PURPOSE: To determine the incidence and epidemiological characteristics of work-related asthma in Korea. METHODS: During 2004-2009, the Korea Work-Related Asthma Surveillance (KOWAS) program collected data on new cases of work-related asthma from occupational physicians, allergy and chest physicians, regional surveillance systems, and workers' compensation schemes. The incidence was calculated on the basis of industry, occupation, sex, age, and region. In addition, the distribution of causal agents was determined. RESULTS: During the study period, 236 cases of work-related asthma were reported, with 77 cases from more than 1 source. A total of 22.0% (n=52) were reported by occupational physicians, 52.5% (n=124) by allergy and chest physicians, 24.2% (n=57) by regional surveillance systems, and 43.2% (n=102) by workers' compensation schemes. The overall average annual incidence was 3.31 cases/million workers, with a rate of 3.78/million among men and 2.58/million among women. The highest incidence was observed in the 50-59-year age group (7.74/million), in the Gyeonggi/Incheon suburb of Seoul (8.50/million), in the furniture and other instrument manufacturing industries (67.62/million), and among craft and related trades workers (17.75/million). The most common causal agents were isocyanates (46.6%), flour/grain (8.5%), metal (5.9%), reactive dyes (5.1%), and solvents (4.2%). CONCLUSIONS: The incidence of work-related asthma in Korea was relatively low, and varied according to industry, occupation, gender, age, and region. Data provided by workers' compensation schemes and physician reports have been useful for determining the incidence and causes of work-related asthma.

PREFACE

No abstract available.

Work-Related Musculoskeletal Diseases and the Workers' Compensation

The Industrial Accident Compensation Insurance Act (IACIA) regulates the workers' compensation insurance system and the standards for the recognition of occupational diseases (ODs). Since its establishment in 1994, the IACIA has been amended several times. Before 2008, the approval of compensation for work-related musculoskeletal diseases (WMSDs) was decided based on the recommendation of consultants of the Korea Workers' Compensation and Welfare Service (COMWEL). The IACIA was amended in 2008, and since then, the approval of compensation for occupational injuries has been decided based on the recommendation of COMWEL consultants, whereas the approval of compensation for ODs was decided based on the judgment of Committee on Occupational Diseases Judgment (CODJ) which was established in 2008. According to the 2013 amendment to the IACIA, degenerative musculoskeletal diseases among workers engaged in musculoskeletal-burdening work should be considered compensable ODs. Despite some commendable changes to the workers' compensation insurance system, other significant issues persist. To resolve these issues, related organizations including the associations of orthopedic surgery, neurosurgery, and occupational and environmental medicine; Ministry of Employment and Labor; and COMWEL need to work cooperatively.

The Scope and Specific Criteria of Compensation for Occupational Diseases in Korea

The range of diseases covered by workers' compensation is constantly expanding. However, new regulations are required for the recognition of occupational diseases (ODs) because OD types evolve with changes in industrial structures and working conditions. OD criteria are usually based on medical relevance, but they vary depending on the social security system and laws of each country. In addition, the proposed range and extent of work-relatedness vary depending on the socio-economic conditions of each country. The Labor Standards Act (LSA) and the Industrial Accident Compensation Insurance Act (IACIA) of Korea employ lists based on their requirements without listing causes and diseases separately. Despite a considerable reshuffle in 2003, the basic framework has been maintained for 50 yr, and many cases do not fit into the international disease classification system. Since July 1, 2013, Korea has expanded the range of occupational accidents to include occupational cancers and has implemented revised LSA and IACIA enforcement decrees. There have been improvements to OD recognition standards with the inclusion of additional or modified criteria, a revised and improved classification scheme for risk factors and ODs, and so on.

Workers' Compensation for Occupational Respiratory Diseases

The respiratory system is one of the most important body systems particularly from the viewpoint of occupational medicine because it is the major route of occupational exposure. In 2013, there were significant changes in the specific criteria for the recognition of occupational diseases, which were established by the Enforcement Decree of the Industrial Accident Compensation Insurance Act (IACIA). In this article, the authors deal with the former criteria, implications of the revision, and changes in the specific criteria in Korea by focusing on the 2013 amendment to the IACIA. Before the 2013 amendment to the IACIA, occupational respiratory disease was not a category because the previous criteria were based on specific hazardous agents and their health effects. Workers as well as clinicians were not familiar with the agent-based criteria. To improve these criteria, a system-based structure was added. Through these changes, in the current criteria, 33 types of agents and 11 types of respiratory diseases are listed under diseases of the respiratory system. In the current criteria, there are no concrete guidelines for evaluating work-relatedness, such as estimating the exposure level, latent period, and detailed examination methods. The results of further studies can support the formulation of detailed criteria.

The Relationship between Temperament, Character and Job Stress of Researchers in Science and Engineering Colleges / 대한산업의학회지

OBJECTIVES: The purpose of this study was to investigate the job stress level of post-graduate students in schools of natural sciences and engineering in order to evaluate the relationship between temperament, character and job stress. METHODS: All the 254 subjects were interviewed by means of a structured questionnaire, KOSS-SF and TCI-RS. Among them, only 220 were eligible for analysis. Statistical methods used included chi-square test, independent t-test, Mann Whitney test, ANOVA test, correlation analysis and multiple linear regression analysis with PASW ver.18. RESULTS: Age, degree course, working hours per week, work tenure, smoking habits, exercise, and disease history were associated with job stress and hours worked per week, smoking being associated with TCI-RS subscales. For job demand, interpersonal conflict scores were higher than Korean standard. In multiple linear regression analyses, R2 scores of temperament subscales on job stress were 0.099~0.312 and those of character subscales on job stress were 0.056~0.249. CONCLUSIONS: Job stress was associated with the unique traits of individuals, temperament and character. In order to manage job stress, the personality, as well as work environment, was found to be important considerations.

Indoor Air Quality for Allergy Prevention / 소아알레르기및호흡기학회지

We are all becoming increasingly aware of allergies and the problems that they represent in the daily lives of many people. The heightened pubic interest and awareness is in the context of a significant increase over the last decade in number of individuals who suffer from allergic problems such as anaphylactic reaction, asthma, hay fever, and eczema. The underlying basis for the rise in the number of allergy suffers has been the focus of considerable research. Much of this attention has concentrated on the quality of the outdoor air we breath, especially as the roads have become more and more congested with traffic generating exhausted pollutants. But researches have identified that sources of air pollution outside the home cannot account for the increasing prevalence of allergy, and so other reasons have to be invested. Many researches have discovered that increasing tendency of allergic problems is linked to the allergens commonly found within the indoor environment, such as those related to house dust, chemicals, mites, cockroaches, domestic and pets and also affected by the physical environments like temperature humidity, and ventilation level. Therefore, researcher's interest is now much more focused on the indoor environment and those factors that influence the level of indoor allergens, as well as the presence of pollutants in buildings. The authors reviewed some measures to control the indoor air quality to prevent allergic diseases.

Association between Emotional Labor and Symptoms of Depression among Bankers / 대한산업의학회지

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.

The Comparison of Job Stress Factors, Psychosocial Stress and Their Association between Research and Manufacturing Workers in an Automobile Research and Developing Company / 대한산업의학회지

OBJECTIVES: This study was conducted to investigate the job stress factors, psychosocial stress and their associations in workers engaged in the research and development of vehicles, and according to job role. METHODS: We recruited 4,066 subjects from workers at a research and development center of an automobile company. A total of 2,764 workers answered the questionnaire about socio-demographic factors, health behaviors, work-related factors, subjective labor intensity, KOSS, and SF-PWI. The final analysis included 2,282 male manufacturing and research workers. Univariate analyses and multiple logistic analyses were conducted on the complete questionnaire data to compare the job stress factors, psychosocial stress and their associations between research and manufacturing workers. RESULTS: The adjusted Odds ratios comparing the high risk group to the low risk group regarding PWI group were 2.23(95%CI=1.63-3.04) in "Lack of rewards", 1.64(95%CI=1.20-2.24) in "Interpersonal conflict", 1.59(95%CI=1.15- 2.20) in "Organizational injustice", 1.58(95%CI=1.17-2.14) in "Occupational climate" and 1.43(95%CI=1.05-1.94) in "Job insecurity" among research workers, and 2.46(95%CI=1.59 -3.80) in "Lack of rewards" and 1.94(95%CI=1.17-3.22) in "Organizational injustice" among manufacturing workers. CONCLUSIONS: There are differences in job stress factors between research and manufacturing workers. Further studies and discussions based on quantitative methodology for seeking more fundamental causes of these differences are required to establish job stress intervention plans and policies.

Posttraumatic Stress Symptoms and Related Factors in Firefighters of a Firestation / 대한산업의학회지

OBJECTIVES: To investigate the factors related with posttraumatic symptoms and to estimate the prevalence of posttraumatic disorder of urban male firefighters. METHODS: From a study sample comprising 260 male firefighters from one fire station, the responses from 146 who had experienced one or more traumatic events, responded to the 'Impact of Event Scale-Revised Korean version' (IES-R-K) and didn't show any evidence of depression were analyzed. We surveyed the firefighters using a self-administered questionnaire including general characteristics, job-related characteristics, IES-R-K, and a 'Firefighters and paramedics' incident stressor'. RESULTS: The mean value of IES-R-K in this study was 11.3 and it was higher in the married firefighters than in the unmarried firefighters (p=0.005) and in the 24-hr shift workers than in the ordinary day shift workers (p=0.032). The frequency of posttraumatic stress disorder (PTSD) of the firefighters in this study using IES-R-K was 13.7%, with a cutoff point of 24/25. The overall number of experiences of 25 traumatic events was larger in emergency medical personnel and rescue workers than in other work functions (p=0.000). CONCLUSIONS: The prevalence of PTSD symptoms in firefighters was estimated to 13.7% using IES-RK and was higher than the prevalence of PTSD in the general population. A program to manage the mental health and provide early detection for mental illness for firefighters is needed.