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Association between shift work and serum homocysteine level in female electronic manufacturing services workers
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Jae Won Lim, Chan Woo Kim, Hyoung Ouk Park, Eui Yup Chung, Changho Chae, JunSeok Son, Young Hoo Shin, Seung Hyun Park, Sang Moon Choi
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Ann Occup Environ Med 2023;35:e4. Published online March 10, 2023
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DOI: https://doi.org/10.35371/aoem.2023.35.e4
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 Abstract
Abstract in Korean
 PDF Supplementary Material PubReader ePub
- Background
Shift work has been shown to increase the risk of cardiovascular disease (CVD) based on several evidences. The classic risk factors of CVD include age, hypertension, smoking, obesity and diabetes. Recently, the serum homocysteine level has been reported to be a valuable indicator of CVD risk. This study aimed to determine the variation in serum homocysteine level as a cardiovascular risk indicator among female workers according to shift work. MethodsThe data of regular health examination of workers at an electronic manufacturing services company in Yeongnam region, South Korea in 2019 were examined in this study. The investigation was based on a cross-sectional study conducted on 697 female workers (199 day workers and 498 shift workers). The sociodemographic and biochemical characteristics were compared between day workers and shift workers. Through a logistic regression analysis, the odds ratio (OR) of the increased serum homocysteine level in relation to shift work was determined. ResultsCompared to female day workers, female shift workers showed significantly higher level of serum homocysteine (8.85 ± 2.16 vs. 9.42 ± 2.04 μmol/mL; p = 0.001). The OR of day workers against shift workers was 1.81 (95% confidence interval [CI]: 1.25–2.63). With the adjustment of variables that may influence the level of serum homocysteine, the adjusted OR was 1.68 (95% CI: 1.09–2.60). ConclusionsThe serum homocysteine level was significantly higher in shift workers than in day workers. It is thus likely to be a useful predictor of CVD in shift workers.
- 전자제조서비스업 회사의 여성 근로자에서 교대근무와 혈청 호모시스테인 수준과의 연관성
목적
교대근무가 심혈관계질환의 발병위험도를 증가시킨다는 여러 증거들이 있다. 심혈관계질환의 고전적 위험인자로는 나이, 고혈압, 흡연, 비만, 이상지질, 당뇨병 등이 있으며, 최근 혈청 호모시스테인 수치는 심혈관계 질환의 위험도 지표로 유용한 것으로 알려지고 있다. 본 연구에서는 여성 근로자에서 교대근무 여부에 따라 심혈관계 질환의 위험도 지표인 혈청 호모시스테인의 수준 차이가 있는지를 알아보고자 하였다.
방법
본 연구는 2019년 영남지방의 한 전자제조서비스업회사 근로자의 정기건강검진 자료를 이용하여 수행하였다. 총 697명의 여성근로자(주간근무자 199명, 교대근무자 498명)의 데이터로 단면연구를 수행하였다. 주간 근무자와 교대근무자의 인구사회학적, 생화학적 특성을 비교하였다. 로지스틱 회귀분석을 사용하여 교대근무와 상승된 혈청 호모시스테인 수치의 교차비를 조사하였다.
결과
여성 주간 근로자와 비교하여 여성 교대근무자의 혈청 호모시스테인 수치가 통계적으로 유의하게 더 높았다. (8.85 ± 2.16 vs 9.42 ± 2.04 μmol/ml ; p=0.001). 교대근무자에 비해 주간 근무자의 교차비는 1.81(95% CI : 1.25-2.63) 였으며, 혈청 호모시스테인 수치에 영향을 미칠 수 있는 변수를 보정한 후, 수정된 OR은 1.68(95% CI : 1.09-2.60) 이었다.
결론
혈청 호모시스테인 수치는 주간 근무자에 비해 교대근무자에서 통계적으로 유의하게 높았다. 교대근로자의 심혈관계 질환 발병의 예측에 있어 혈청 호모시스테인 수치가 유용하겠다.
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Citations
Citations to this article as recorded by  - Dietary habits of night shift workers: A reason or an excuse for poor nutrition
Svetlana Anđelković, Maja Babić
Srpski medicinski casopis Lekarske komore.2024; 5(1): 75. CrossRef
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Association between unpredictable work schedule and work-family conflict in Korea
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Sang Moon Choi, Chan Woo Kim, Hyoung Ouk Park, Yong Tae Park
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Ann Occup Environ Med 2023;35:e46. Published online November 10, 2023
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DOI: https://doi.org/10.35371/aoem.2023.35.e46
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Abstract
Abstract in Korean
PDFPubReaderePub
- Background
As unpredictable work schedule (UWS) has increased worldwide, various studies have been conducted on the resulting health effects on workers. However, research on the effect of UWS on workers' well-being in Korea is still insufficient. This study aimed to investigate the relationship between UWS and work-family conflict (WFC) using 6th Korean Working Conditions Survey (KWCS). MethodsBoth UWS and WFC were measured using self-reported questionnaires, using data from the 6th KWCS conducted between 2020 and 2021, including 31,859 participants. UWS was measured by questions regarding the frequency of changes in work schedules and limited advanced notice. WFC was measured by questions regarding work to family and family to work conflicts. Logistic regression analysis was conducted to investigate the association between UWS and WFC. ResultsThe prevalence of UWS was higher among men, those under 40 years old, service and sales workers and blue-collar workers, and those with higher salaries. Workplace size also influenced UWS prevalence, with smaller workplaces (less than 50 employees) showing a higher prevalence. The odds ratio (OR) for WFC was significantly higher in workers with UWS compared to workers without UWS after adjusting for gender, age, marital status, occupation, salary, education, weekly working hours, shift work, company size, and having a child under the age of 18 years, employment status (OR: 3.71; 95% confidence interval: 3.23–4.25). ConclusionsThe analysis of nationwide data revealed that UWS interferes with workers’ performance of family roles, which can lead to WFC. Our findings suggest that it is crucial to implement policies to address unfair work schedule management, promoting a healthier work-life balance and fostering a conducive environment for family responsibilities.
- 예측 불가능한 근무 일정과 일-가정 갈등의 연관성
목적
전 세계적으로 예측 불가능한 근무 일정(unpredictable work schedule, UWS)이 증가함에 따라, 근로자에게 미치는 건강 영향에 대한 다양한 연구가 진행되었다. 그러나, UWS가 근로자의 삶에 미치는 영향에 대한 국내 연구는 아직 미흡하다. 본 연구는 제6차 한국근로환경조사(Korean Working Conditions Survey, KWCS)를 이용하여 UWS와 일-가정 갈등(Work-Family Conflict, WFC)의 관계를 알아보고자 하였다.
방법
2020년과 2021년 사이에 수행된 제6차 KWCS의 데이터를 사용하여 총 31859명이 연구 대상으로 포함되었고 UWS와 WFC는 모두 자기기입식 설문을 통해 측정되었다. UWS는 업무 일정의 변경 빈도 및 제한된 사전통지에 관한 질문으로 측정되었으며, WFC는 업무로부터 발생하는 가족 갈등과 및 가족으로 발생하는 업무 갈등에 관한 질문으로 측정되었다. UWS와 WFC의 연관성을 조사하기 위해 로지스틱 회귀 분석을 수행하였다.
결과
UWS는 남성, 40세미만, 서비스 및 판매 종사자, 블루칼라 종사자, 그리고 더 높은 급여를 받는 사람들 사이에서 더 많았다. 작업장 규모도 UWS에 영향을 미쳤으며, 소규모 작업장(직원 수 50명 미만)에서 더 많았습니다. WFC의 오즈비는 성별, 연령, 결혼 여부, 직업, 급여, 교육, 주간 근로시간, 교대근무, 회사 규모, 18세 미만 자녀 여부, 정규직 여부를 보정한 후 나타난 결과에서 UWS가 없는 근로자에 비해 UWS가 있는 근로자에서 유의하게 높았다(OR: 3.78, 95% CI: 3.28-4.34).
결론
전국적인 자료를 분석한 결과, UWS가 근로자의 가족 역할 수행을 방해하여 WFC를 유발할 수 있는 것으로 나타났다. 본 연구는 근로자에게 건강한 일과 삶의 균형을 제공하고 가족 역할을 수행하기 좋은 환경을 조성하기 위해 불공정한 근무 일정 관리를 해소시키는 정책의 필요성을 시사한다.
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Association between coronavirus disease 2019-related workplace interventions and prevalence of depression and anxiety
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Hyun Woo Park, Seung Hyun Park, Young Wook Kim, JunSeok Son, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Young Hoo Shin, Chang Ho Chae, Eui Yup Chung, Hun Jeong
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Ann Occup Environ Med 2022;34:e11. Published online June 3, 2022
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DOI: https://doi.org/10.35371/aoem.2022.34.e11
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Abstract
Abstract in Korean
PDFSupplementary MaterialPubReaderePub
- Background
Although coronavirus disease 2019 is causing a variety of psychological problems for workers, there are few longitudinal studies on changes in workers’ mental health by workplace intervention. This study aimed to evaluate the change in the prevalence of depression and anxiety according to the active involvement of the workplace. MethodsThis study was conducted on 1,978 workers at a workplace who underwent a health screening from January 2019 to August 2020, and classified depression and anxiety disorders using a self-report questionnaire. After the first pandemic, the company stopped health screening, took paid leave and telecommuting, and conducted interventions such as operating its own screening clinic. To see if this workplace intervention affects workers’ mental health, we conducted generalized estimating equations to compare odds ratio (OR). ResultsIn the pre-intervention group, 384 people (16.86%) had depression, and 507 people (22.26%) had anxiety disorder. Based on the OR before intervention, the OR of depression decreased to 0.76 (0.66–0.87) and the OR of anxiety disorder decreased to 0.73 (0.65–0.82). ConclusionsAs a result of this study, it was confirmed that workplace intervention was related to a decrease in depression and anxiety. This study provides basic data to improve workers’ mental health according to workplace intervention, and further research is needed according to workplace intervention in the future.
- 코로나바이러스감염증-19 관련 사업장 개입과 우울증 및 불안장애 유병률 간의 관련성
목적
COVID-19가 근로자에게 다양한 심리적 문제를 야기하고 있지만, 사업장 개입이 근로자의 정신 건강의 변화에 대한 종단적 연구는 거의 없다. 이 연구는 사업장의 적극적인 개입 여부에 따른 우울, 불안의 유병률 변화를 평가하는 것을 목표로 하였다.
방법
본 연구는 2019년 1월부터 2020년 8월까지 건강검진을 받은 한 사업장의 근로자 1,978명을 대상으로 하였으며, 자기기입식 설문지를 이용하여 우울증, 불안장애를 분류하였다. 이 회사는 1차 대유행 이후 건강검진을 중단하고, 유급휴직 및 재택근무, 자체선별진료소 운영 등의 개입을 실시하였다. 이런 사업장 개입이 근로자의 정신건강에 영향을 미치는지 알아보기 위해 Generalized estimating equation(GEE)을 시행하여 Odds ratio(OR)을 비교하였다.
결과
Pre-intervention group에서 우울증은 총 384명(16.86%)이었으며, 불안장애는 총 507명(22.26%)이었다. Pre-intervention group의 OR를 기준으로 하였을 때, post-intervention group의 우울증 OR는 0.76(0.66-0.87), 불안장애의 OR는 0.73(0.65-0.82)로 감소하였다.
결론
본 연구 결과, 사업장의 개입이 우울, 불안의 감소와 관련이 있다는 것을 확인할 수 있었다. 본 연구는 사업장 개입 여부에 따른 근로자 정신건강을 개선시키기 위한 기초자료를 제공하며, 향후 사업장 개입에 따른 추가 연구가 필요할 것으로 본다.
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Citations
Citations to this article as recorded by - Telecommuting-related health outcomes during the COVID-19 pandemic in South Korea: a national population-based cross-sectional study
Seung-Woo Ryoo, Jin-Young Min, Dong-Wook Lee, Baek-Yong Choi, Juho Choi, Ho-Yeon Kim, Kyoung-Bok Min
BMC Public Health.2023;[Epub] CrossRef - Multidimensional typologies of precarious employment and their relationships with mental well-being in Korean wageworkers: A latent class analysis based on the Korean Working Conditions Survey (2020–2021)
Seong-Uk Baek, Jong-Uk Won, Jin-Ha Yoon
Preventive Medicine.2023; 177: 107787. CrossRef
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Distribution of Lung-RADS categories according to job type in a single shipyard workers
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Eui Yup Chung, Young Hoo Shin, Young Wook Kim, Jun Seok Son, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Seung Hyun Park, Sung Joon Woo, Chang Ho Chae
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Ann Occup Environ Med 2021;33:e22. Published online June 23, 2021
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DOI: https://doi.org/10.35371/aoem.2021.33.e22
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Abstract
Abstract in Korean
PDFPubReaderePub
- Background
Recently, lung cancer screenings based on age and smoking history using low-dose computed tomography (LDCT) have begun in Korea. This study aimed to evaluate the distribution of lung imaging reporting and data system (Lung-RADS) categories in shipyard workers exposed to lung carcinogens such as nickel, chromium, and welding fumes according to job type, to provide basic data regarding indications for LDCT in shipyard workers. MethodsThis study included 6,326 workers from a single shipyard, who underwent health examinations with LDCT between January 2010 and December 2018. Data on age, smoking status and history, medical history, and job type were investigated. The participants were categorized into high-exposure, low-exposure, and non-exposure job groups based on the estimated exposure level of nickel, chromium, and welding fumes according to job type. Cox proportional hazard regression analysis was used to determine the difference between exposure groups in Lung-RADS category ≥ 3 (3, 4A, and 4B). ResultsOut of all participants, 97 (1.5%) participants were classified into Lung-RADS category ≥ 3 and 7 (0.1%) participants were confirmed as lung cancer. The positive predictive value (ratio of diagnosed lung cancer cases to Lung-RADS category ≥ 3) was 7.2%. The hazard ratio (HR) of Lung-RADS category ≥ 3 was 1.451 (95% confidence interval [CI]: 0.911–2.309) in low-exposure and 1.692 (95% CI: 1.007–2.843) in high-exposure job group. Adjusting for age and pack-years, the HR was statistically significant only in the high-exposure job group (HR: 1.689; 95% CI: 1.004–2.841). ConclusionsBased on LDCT and Lung-RADS, among male shipyard workers, Lung-RADS category ≥ 3 were significantly higher in the high-exposure job group. Their HR tended to be > 1.0 and was statistically significant in the high-exposure job group. Additional studies should be conducted to establish more elaborate LDCT indications for occupational health examination.
- 일개 조선소 근로자의 직종간 Lung-RADS 비교
목적
최근 폐암의 조기 발견을 위해 저선량 흉부CT (LDCT)를 이용하기 시작했으며, 국내에서도 연령과 흡연력을 기준으로 한 국가폐암검진이 시작되었다. 니켈, 크롬, 용접흄은 조선소 근로자에서 흔히 노출될 수 있는 폐암 발암물질로 알려져 있으나, 이러한 위험 요인은 아직 폐암 검진의 기준이 되지 못하였다. 이 연구는 LDCT를 이용하여 니켈, 크롬, 용접흄에 노출되는 일개 조선소 근로자들에서 직종과 폐 CT 선별 판독 시스템 (Lung-RADS) 양상을 비교하여, 조선소 근로자의 LDCT 적응증에 대한 기초 자료를 생성하고자 하였다.
방법
2010년 1월부터 2018년 12월까지 건강검진에 참여한 경남지역 조선소 근로자 6,326명이 연구에 참여했다. 문진과 자기기입식 설문지를 이용하여 연령, 흡연력, 과거력, 직종 등을 확인하여, 직군에 따른 크롬, 니켈, 용접흄의 노출 추정 정도에 따라 고노출 직군, 저노출 직군, 비노출군으로 분류하였다. 그룹 간 Lung-RADS 3 이상인 군에 차이가 있는지 cox 비례위험 회귀분석을 시행하였다. 또한 연령과 갑년을 보정하여 그룹간 hazard ratio (HR)를 비교하였다.
결과
전체 대상자 6,326명 중 Lung-RADS 3 이상인 군은 97명, 폐암으로 확진된 대상자는 7명으로, 양성예측도 (PPV)는 7.2%이였다. Lung-RADS 3 이상에 대하여 직군에 따른 HR은 저노출 직군 1.451 (95% confidence interval [CI]: 0.911-2.309), 고노출 직군 1.692 (95% CI: 1.007-2.843)으로 나타났다. 연령과 갑년을 보정했을 시 HR은 고노출 직군에서만 유의하게 1.689 (95% CI: 1.004-2.841)로 나타났다.
결론
현행의 폐암검진 방법인 LDCT와 진단기준인 Lung-RADS를 이용하였을 때, 일개 조선소 남성 근로자 중 니켈, 크롬, 용접흄 노출 직군에서 Lung-RADS 3 이상군이 유의하게 많으며, HR이 1.0보다 높은 경향을 보이고, 고노출 직군에서는 유의한 결과를 보였다. 향후 추가적인 연구를 통해 보다 정밀한 근로자 건강검진 상 LDCT 적응증을 만들어야 한다.
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Citations
Citations to this article as recorded by - Artificial intelligence-based graded training of pulmonary nodules for junior radiology residents and medical imaging students
Xiaohong Lyu, Liang Dong, Zhongkai Fan, Yu Sun, Xianglin Zhang, Ning Liu, Dongdong Wang
BMC Medical Education.2024;[Epub] CrossRef - The effect of occupational exposure to welding fumes on trachea, bronchus and lung cancer: A systematic review and meta-analysis from the WHO/ILO Joint Estimates of the Work-related Burden of Disease and Injury
Dana Loomis, Angel M. Dzhambov, Natalie C. Momen, Nicholas Chartres, Alexis Descatha, Neela Guha, Seong-Kyu Kang, Alberto Modenese, Rebecca L. Morgan, Seoyeon Ahn, Martha S. Martínez-Silveira, Siyu Zhang, Frank Pega
Environment International.2022; 170: 107565. CrossRef
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The effect of shift work on high sensitivity C-reactive protein level among female workers
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Ho Sung Kwak, Hyoung Ouk Park, Young Ouk Kim, Jun Seok Son, Chan Woo Kim, Jun Ho Lee, Young Hoo Shin, Seung Hyun Park, Eui Yup Chung, Chang Ho Chae
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Ann Occup Environ Med 2019;31:e5. Published online May 28, 2019
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DOI: https://doi.org/10.35371/aoem.2019.31.e5
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Abstract
PDFPubReaderePub
- Background
This study assessed the association between shift work and high-sensitivity C-reactive protein (hs-CRP) level, a risk factor for cardiovascular disease (CVD), in female workers in electronics manufacturing services (EMS). MethodsFemale EMS workers who received special medical examinations for workers in Gyeongnam, Korea between January 2017 and December 2017 were enrolled in this study. Their age, marital status, education level, alcohol consumption, smoking habit, regular exercise, quality of sleep, work stress, and depression were investigated, and blood tests were conducted. The t- and χ2 tests were conducted to compare the general and biochemical characteristics between daytime and shift worker groups. Age-adjusted partial correlation analysis was performed to examine the linear relationship between hs-CRP level and other risk factors for CVDs. In addition, the difference in hs-CRP levels according to work schedule was analyzed by ANCOVA after adjusting for variables that could affect the hs-CRP level. ResultsAlthough the average hs-CRP levels did not differ significantly between daytime and shift workers (0.92 ± 1.87 and 1.07 ± 2.20 mg/dL, respectively), shift workers tended to show a higher hs-CRP level (p = 0.067). After adjusting for variables that can affect the hs-CRP level, the estimated average hs-CRP level was significantly higher in shift workers (1.325 ± 0.156 mg/dL) than that in daytime workers (0.652 ± 0.350 mg/dL) (p = 0.003). ConclusionsThe results of this study identified a relationship between shift work and hs-CRP level increase in women. Because multiple studies have reported associations between increased hs-CRP and CVD, follow-up of hs-CRP may help early detection of CVD in shift workers.
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Citations
Citations to this article as recorded by - Associations between circadian disruption and cardiometabolic disease risk: A review
Velarie Ansu Baidoo, Kristen L. Knutson
Obesity.2023; 31(3): 615. CrossRef - Sleep Irregularity and Subclinical Markers of Cardiovascular Disease: The Multi‐Ethnic Study of Atherosclerosis
Kelsie M. Full, Tianyi Huang, Neomi A. Shah, Matthew A. Allison, Erin D. Michos, Daniel A. Duprez, Susan Redline, Pamela L. Lutsey
Journal of the American Heart Association.2023;[Epub] CrossRef - Consequences of Shift Work and Night Work: A Literature Review
Isabel Silva, Daniela Costa
Healthcare.2023; 11(10): 1410. CrossRef - Exposure to Radiation During Work Shifts and Working at Night Act as Occupational Stressors Alter Redox and Inflammatory Markers
Sanaa A. El-Benhawy, Rasha A. El-Tahan, Sameh F. Nakhla
Archives of Medical Research.2021; 52(1): 76. CrossRef - Analysis of the relationship between the level of high-sensitive C-reactive protein and the risk factors of cardiovascular diseases in young and middle-aged persons
O. A. Polyakova, A. A. Kirichenko, A. I. Kochetkov
Medical alphabet.2021; (23): 58. CrossRef - Association of working conditions including digital technology use and systemic inflammation among employees: study protocol for a systematic review
Helena C. Kaltenegger, Linda Becker, Nicolas Rohleder, Dennis Nowak, Matthias Weigl
Systematic Reviews.2020;[Epub] CrossRef
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Comparison of risk-assessment tools for cardio-cerebrovascular diseases (CVD) in male shipyard workers: a cross-sectional study
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Jea Chul Ha, Jun Seok Son, Young Ouk Kim, Chang Ho Chae, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Young Hoo Shin, Hyun Woo Park
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Ann Occup Environ Med 2019;31:e4. Published online May 23, 2019
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DOI: https://doi.org/10.35371/aoem.2019.31.e4
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Abstract
PDFPubReaderePub
- Background
Periodic revision of assessment tools is essential to ensure risk assessment reliability and validity. Despite the recent revision of the Korea Occupational Safety and Health Agency (KOSHA) 2018, there is no evidence showing that the revision is superior to other cardio-cerebrovascular diseases (CVDs) risk-assessment tools for workplace health management. We conducted a comparative analysis using the Framingham risk score (FRS) as a gold standard to identify the most relevant CVDs risk-assessment tool for workplace health management. MethodsWe included 4,460 shipyard workers who had undergone a workers' health examination during January–December 2016. Risk levels for CVDs were calculated based on the FRS, KOSHA 2013, KOSHA 2017, KOSHA 2018 (2 methods), National Health Screening Program health risk appraisal (NHS HRA) 2017, and NHS HRA 2018. Study participants were categorized into low-risk, moderate-risk, or high-risk groups. Sensitivity, specificity, correlation, and agreement of each risk-assessment tool were calculated compared with the FRS as a gold standard. For statistical analyses, Spearman's rank correlation coefficient and the linearly weighted kappa coefficient were calculated. ResultsSensitivity of the risk assessments was highest in the KOSHA 2018 (health risk appraisal [HRA]). The FRS showed correlation coefficients of 0.354 with the KOSHA 2013, 0.396 with the KOSHA 2017, 0.386 with the KOSHA 2018, 0.505 with the KOSHA 2018 (HRA), 0.288 with the NHS HRA 2017, and 0.622 with the NHS HRA 2018. Kappa values, calculated to examine the agreement in relation to the KOSHA 2013, KOSHA 2017, KOSHA 2018, KOSHA 2018 (HRA), NHS HRA 2017, and NHS HRA 2018 with the FRS, were 0.268, 0.322, 0.352, 0.136, 0.221, and 0.559, respectively. ConclusionsThe NHS HRA 2018 risk calculation method is a useful risk-assessment tool for CVDs, but only when appropriate classification criteria are applied. In order to enhance the risk-group identification capability of the KOSHA guideline, we propose to apply the classification criteria set in this study based on the risk group definition of the 2018 Korean Society of Hypertension guidelines for the management of hypertension instead of the current classification criteria of the KOSHA 2018.
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Citations
Citations to this article as recorded by - Comparing Korea Occupational Safety & Health Agency and National Health Insurance Service’s cardio-cerebrovascular diseases risk-assessment tools using data from one hospital’s health checkups
Yunrae Cho, Dong Geon Kim, Byung-Chan Park, Seonhee Yang, Sang Kyu Kim
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef - Usefulness of Relative Handgrip Strength as a Simple Indicator of Cardiovascular Risk in Middle-Aged Koreans
Won Bin Kim, Jun-Bean Park, Yong-Jin Kim
The American Journal of the Medical Sciences.2021; 362(5): 486. CrossRef
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Changes of depression and job stress in workers after merger without downsizing
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Jun Ick Jung, Jun Seok Son, Young Ouk Kim, Chang Ho Chae, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Young Hoo Shin, Jea Chul Ha
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Ann Occup Environ Med 2018;30:54. Published online August 29, 2018
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DOI: https://doi.org/10.1186/s40557-018-0266-4
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Abstract
PDFPubReaderePub
- Background
Since the 1980s, restructuring, which includes downsizing, closures, mergers, and privatization, has expanded worldwide, and various studies have investigated its effect on health. However, previous studies have mainly focused on restructuring accompanied by massive lay-offs, and the effect of a merger on workers’ health is still controversial. This study aims to investigate changes in worker depression and job stress after a merger without downsizing, which is unusual in Korea. MethodsRepeated surveys were done in April 2014, April 2015, and April 2016 involving the participation of 209 subjects. Participants were divided into two groups, which were comprised of blue-collar workers (104) and white-collar workers (105). Sociodemographic characteristics, including age, education level, job tenure, gender, marital status, smoking status, and alcohol consumption, were measured via a survey. To determine the level of depression, the Korean version of the Center for Epidemiologic Studies Depression Scale (CES-D) was employed, and to investigate job stress, the Korean Occupational Stress Scale-Short Form (KOSS-SF) was used. For statistical analyses, Pearson’s chi-square test, the Student’s t-test, and repeated measure analysis of variance (ANOVA) were performed. ResultsThe results showed that depression (CES-D, F[2, 400] = 0.466, p = 0.628) was changed but without significance and job stress (KOSS-SF, F[1.899, 379.831] = 3.192, p = 0.045) were significantly different. The between-group difference in the CES-D score between the blue- and white-collar workers by survey administration time was not statistically significant (F = 0.316, p = 0.574). The interaction between the survey time and occupational group was also not statistically significant (F = 0.967, p = 0.381). The between-group difference in the KOSS-SF total score was not statistically significant (F = 1.132, p = 0.289), and the interaction between the survey administration time and occupational group was also not significant (F = 0.817, p = 0.437). In the job stress subgroup analyses Job insecurity and Lack of reward showed a significant difference by survey administration time. ConclusionThis study showed that a merger without massive downsizing can cause negative health effects such as an changes in depression and increase in job stress. To improve the health of workers, both the immediate negative effects on health, and the long-term effects or their resolution over time should be considered prior to the merger.
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Citations
Citations to this article as recorded by - A Review of Psychological Stress among Students and Its Assessment Using Salivary Biomarkers
Bruno Špiljak, Maja Vilibić, Ana Glavina, Marija Crnković, Ana Šešerko, Liborija Lugović-Mihić
Behavioral Sciences.2022; 12(10): 400. CrossRef
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The relationship between serum vitamin D levels and sleep quality in fixed day indoor field workers in the electronics manufacturing industry in Korea
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Young Saeng Jung, Chang Ho Chae, Young Ouk Kim, Jun Seok Son, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Young Hoo Shin, Ho Sung Kwak
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Ann Occup Environ Med 2017;29:25. Published online June 24, 2017
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DOI: https://doi.org/10.1186/s40557-017-0187-7
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Abstract
PDFPubReaderePub
- Background
Although recent studies have investigated the influence of vitamin D on sleep patterns, there is a lack of research on the relationship between vitamin D and sleep patterns in Korean workers. This study focused on the relationship between serum vitamin D levels and sleep in fixed day indoor field workers in the electronics manufacturing industry in Korea. MethodsThe 1472 subjects who were included in this study were selected from fixed day workers in the electronics manufacturing industry who had received a worker’s special health examination at a hospital in Changwon, South Gyeongsang Province between January 2015 and December 2015. Nighttime workers and those who showed symptoms of depression were excluded from this study. The sociodemographic and lifestyle variables of the participants were investigated, including age, sex, marital status, level of education, body mass index, smoking habits, alcohol consumption habits, and regular exercise. Work-related factors were evaluated, such as employee tenure and occupational stress. Serum 25-hydroxyvitamin D was measured as an indicator of vitamin D levels, and quality of sleep was evaluated using the Pittsburgh Sleep Quality Index (PSQI) translated into Korean. ResultsThe subjects had a mean serum vitamin D level of 13.70 ± 5.93 ng/mL. Vitamin D deficiency, defined as a serum vitamin D level of <10 ng/mL, was found in 24.8% of males and significantly more frequently in females (47.6%). Poor sleep quality was reported by 19.8% of participants with serum vitamin D levels ≥10 ng/mL and by 21.7% of those with serum vitamin D levels <10 ng/mL, which was a significant difference (P = .007). Multiple logistic regression analysis adjusting for significant variables found that poor sleep quality was more likely in those with vitamin D deficiency than those with higher serum vitamin D levels (odds ratio = 1.36; 95% CI, 1.01–1.82). A comparison of serum vitamin D levels and PSQI components showed that the mean scores for subjective sleep quality, sleep latency, and sleep duration were significantly higher in the vitamin D-deficient participants, indicating that the vitamin D-deficient participants had poorer sleep quality. ConclusionsThis study investigated serum vitamin D levels in fixed day indoor field workers in the manufacturing industry in Korea and analyzed the relationship of vitamin D deficiency with sleep quality. A significant correlation was found between serum vitamin D deficiency and poor sleep quality. Based on the results of this study, sleep disorder management for workers can be improved by providing regular examinations checking their serum vitamin D levels and supplying vitamin D to workers with serum vitamin D deficiency to enhance their quality of sleep.
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Citations
Citations to this article as recorded by - The role of interaction between vitamin D and VDR FokI gene polymorphism (rs2228570) in sleep quality of adults
Luiz Antônio Alves de Menezes-Júnior, Thais da Silva Sabião, Samara Silva de Moura, Aline Priscila Batista, Mariana Carvalho de Menezes, Júlia Cristina Cardoso Carraro, George Luiz Lins Machado-Coelho, Adriana Lúcia Meireles
Scientific Reports.2024;[Epub] CrossRef - Serum vitamin D concentrations and sleep disorders: insights from NHANES 2011–2016 and Mendelian Randomization analysis
Junjie Jiang, Hanyu Tan, Zhongfang Xia, Jun Li, Shuang Zhou, Tao Huang
Sleep and Breathing.2024; 28(4): 1679. CrossRef - Vitamin D deficiency: A forgotten aspect in sleep disorders? A critical update
Sophia Schiza, Izolde Bouloukaki, Athanasios Kaditis, Carolina Lombardi, Maria R. Bonsignore
Sleep Medicine.2024; 121: 77. CrossRef - Influence of sunlight on the association between 25-hydroxyvitamin D levels and sleep quality in Brazilian adults: A population-based study
Luiz Antônio Alves de Menezes-Júnior, Thais da Silva Sabião, Samara Silva de Moura, Aline Priscila Batista, Mariana Carvalho de Menezes, Júlia Cristina Cardoso Carraro, Amanda Cristina de Souza Andrade, George Luiz Lins Machado-Coelho, Adriana Lúcia Meire
Nutrition.2023; 110: 112008. CrossRef - Vitamin D Physiology, Deficiency, Genetic Influence, and the Effects of Daily vs. Bolus Doses of Vitamin D on Overall Health: A Clinical Approach
Vincenzo Sorrenti, Alessandro Buriani, Sergio Davinelli, Giovanni Scapagnini, Stefano Fortinguerra
Nutraceuticals.2023; 3(3): 403. CrossRef - Examination of correlations between vitamin D and melatonin levels with sleep among women aged 18-49 years
Zehra İncedal Sonkaya, Burak Yazgan, Aslı Kurtgöz, Aslıhan Dilara Demir, Serap İncedal Irgat
Central European Journal of Public Health.2023; 31(1): 19. CrossRef - Association between Serum Vitamin D Level and Sleep Quality in Shift-Workers
Seunghyun Kim, Jaeho Choi, Jiwon Min, Hyerhan Park, Ki Hyun Park, Booyoon Cheung, Soohyoung Lee
Korean Journal of Family Practice.2022; 12(1): 41. CrossRef - D-hypovitaminosis in working age patients with diseases of the respiratory organs: the risks and prevention
L. K. Ibrayeva, D. Kh. Rybalkina, O. A. Evmenova, F. M. Turdaly, Zh. T. Ibragim
PULMONOLOGIYA.2022; 32(6): 891. CrossRef - Sleep Quality: A Narrative Review on Nutrition, Stimulants, and Physical Activity as Important Factors
Monika Sejbuk, Iwona Mirończuk-Chodakowska, Anna Maria Witkowska
Nutrients.2022; 14(9): 1912. CrossRef - Association of serum levels of vitamin D and vitamin D binding protein with mental health of overweight/obese women: A cross sectional study
Niloofarsadat Maddahi, Leila Setayesh, Sanaz Mehranfar, Shahab Alizadeh, Mir Saeed Yekaninejad, Khadijeh Mirzaei
Clinical Nutrition ESPEN.2022; 47: 260. CrossRef - The association between vitamin D status and sleep duration in school-aged children; the CASPIAN-V study
Kumars Pourrostami, Ramin Heshmat, Hoda Derakhshanian, Hanieh-Sadat Ejtahed, Gita Shafiee, Omid Safari, Amin Reza Abkhoo, Nami Mohammadian-Khonsari, Armita Mahdavi-Gorabi, Mehdi Ebrahimi, Mostafa Qorbani, Roya Kelishadi
Journal of Diabetes & Metabolic Disorders.2022; 22(1): 341. CrossRef - The effect of vitamin D on sleep quality: A systematic review and meta-analysis
Zahra Mirzaei-Azandaryani, Somyieh Abdolalipour, Mojgan Mirghafourvand
Nutrition and Health.2022; 28(4): 515. CrossRef - Associations of serum 25-hydroxyvitamin D and subjective sleep measures in an arctic population: Insights from the population-based Tromsø Study
A.U. Larsen, L.A. Hopstock, R. Jorde, G. Grimnes
Sleep Medicine: X.2022; 4: 100056. CrossRef - No improvement of sleep from vitamin D supplementation: insights from a randomized controlled trial
A.U. Larsen, L.A. Hopstock, R. Jorde, G. Grimnes
Sleep Medicine: X.2021; 3: 100040. CrossRef - The Association Between Dietary Zinc Intake and Health Status, Including Mental Health and Sleep Quality, Among Iranian Female Students
Hossein Hajianfar, Negar Mollaghasemi, Rahele Tavakoly, Marilyn S. Campbell, Mohadese Mohtashamrad, Arman Arab
Biological Trace Element Research.2021; 199(5): 1754. CrossRef - Effects of vitamin D on mood and sleep in the healthy population: Interpretations from the serotonergic pathway
Laura M. Huiberts, Karin C.H.J. Smolders
Sleep Medicine Reviews.2021; 55: 101379. CrossRef - Nutraceuticals as Potential Targets for the Development of a Functional Beverage for Improving Sleep Quality
Amanda Bulman, Nathan M. D’Cunha, Wolfgang Marx, Andrew J. McKune, Rati Jani, Nenad Naumovski
Beverages.2021; 7(2): 33. CrossRef - Vitamin D and sleep duration: Is there a bidirectional relationship?
Maryam Mosavat, Aisling Smyth, Diana Arabiat, Lisa Whitehead
Hormone Molecular Biology and Clinical Investigation.2020;[Epub] CrossRef - Towards a comprehensive etiopathogenetic and pathophysiological theory of multiple sclerosis
Tobore Onojighofia Tobore
International Journal of Neuroscience.2020; 130(3): 279. CrossRef - The effect of vitamin D on restless legs syndrome: prospective self-controlled case study
Mesude Tutuncu, Melih Tutuncu
Sleep and Breathing.2020; 24(3): 1101. CrossRef - Vitamin D and Sleep Regulation: Is there a Role for Vitamin D?
Fiammetta Romano, Giovanna Muscogiuri, Elea Di Benedetto, Volha V. Zhukouskaya, Luigi Barrea, Silvia Savastano, Annamaria Colao, Carolina Di Somma
Current Pharmaceutical Design.2020; 26(21): 2492. CrossRef - Vitamin D and sleep in children
Baha Al-Shawwa, Zarmina Ehsan, David G. Ingram
Journal of Clinical Sleep Medicine.2020; 16(7): 1119. CrossRef - Associations among physical activity and smartphone use with perceived stress and sleep quality of Chinese college students
Xiangyu Zhai, Mei Ye, Can Wang, Qian Gu, Tao Huang, Kun Wang, Zuosong Chen, Xiang Fan
Mental Health and Physical Activity.2020; 18: 100323. CrossRef - Association of serum 25-hydroxyvitamin D concentrations with sleep phenotypes in a German community sample
Ezgi Dogan-Sander, Anja Willenberg, İnci Batmaz, Cornelia Enzenbach, Kerstin Wirkner, Elisabeth Kohls, Roland Mergl, Joachim Thiery, Jürgen Kratzsch, Ulrich Hegerl, Christian Sander, Raffaele Ferri
PLOS ONE.2019; 14(7): e0219318. CrossRef - Serum 25-hydroxyvitamin D3 levels and poor sleep quality in a Japanese population: the DOSANCO Health Study
Koshi Nakamura, Shu-Ping Hui, Shigekazu Ukawa, Emiko Okada, Takafumi Nakagawa, Hiroaki Okabe, Zhen Chen, Yusuke Miura, Hitoshi Chiba, Akiko Tamakoshi
Sleep Medicine.2019; 57: 135. CrossRef - Pharmacotherapeutic management of sleep disorders in children with neurodevelopmental disorders
Oliviero Bruni, Marco Angriman, Maria Grazia Melegari, Raffaele Ferri
Expert Opinion on Pharmacotherapy.2019; 20(18): 2257. CrossRef - The lullaby of the sun: the role of vitamin D in sleep disturbance
Giovanna Muscogiuri, Luigi Barrea, Marianna Scannapieco, Carolina Di Somma, Massimo Scacchi, Gianluca Aimaretti, Silvia Savastano, Annamaria Colao, Paolo Marzullo
Sleep Medicine.2019; 54: 262. CrossRef - The Association between Vitamin D Deficiency and Sleep Disorders: A Systematic Review and Meta-Analysis
Qi Gao, Tingyan Kou, Bin Zhuang, Yangyang Ren, Xue Dong, Qiuzhen Wang
Nutrients.2018; 10(10): 1395. CrossRef
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Erratum to: The relationship between quality of sleep and night shift rotation interval
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Jae Youn Kim, Chang Ho Chae, Young Ouk Kim, Jun Seok Son, Ja Hyun Kim, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Soon Kwon
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Ann Occup Environ Med 2016;28:6. Published online January 25, 2016
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DOI: https://doi.org/10.1186/s40557-016-0090-7
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PDFPubReaderePub
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Association between serum vitamin D and depressive symptoms among female workers in the manufacturing industry
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Soon Il Kwon, Jun Seok Son, Young Ouk Kim, Chang Ho Chae, Ja Hyun Kim, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Jun Ick Jung
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Ann Occup Environ Med 2015;27:28. Published online December 12, 2015
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DOI: https://doi.org/10.1186/s40557-015-0083-y
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Abstract
PDFPubReaderePub
- Background
Vitamin D has been known to maintain the body’s balance of calcium and phosphorus as well as skeletal health. There has been increasing emphasis on the importance of vitamin D as recent studies have been reporting the specific functions of vitamin D in the cerebral nervous system and the association between the level of serum vitamin D and depressive symptoms. However, there is currently a paucity of research investigating the association between serum vitamin D and depressive symptoms in Korean subjects. Consequently, this study has aimed to determine the level of serum vitamin D and explore the association between serum vitamin D and depressive symptoms in Korean female workers. MethodA medical examination, questionnaire, anthropometric measurements, and a blood test were conducted between February 3 and March 7, 2014 in 1054 subjects among female workers in the manufacturing industry who underwent physical examinations in a university hospital. From this data, we identified the level of serum vitamin D and investigated the association between serum vitamin D deficiency and depressive symptoms. ResultsThe average serum vitamin D level of the 1054 subjects was 9.07 ± 3.25 ng/mL, and the number of subjects in the serum vitamin D deficiency group with less than 10 ng/mL was 721 (68.4 %). The odds ratio of the depressive symptom group with a CES-D score of 16 or above being in the deficiency group with a serum vitamin D level less than 10 ng/mL was found to be 1.55 (95 % CI = 1.15–2.07). Conclusion68.4 % of female workers in the manufacturing industry were in the deficiency group with serum vitamin D levels less than 10 ng/mL. Additionally, we identified an association between serum vitamin D deficiency and depressive symptoms. In the future, if serum vitamin D deficiency is checked regularly in workers, we expect to achieve better outcomes in managing their depressive symptoms.
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Citations
Citations to this article as recorded by - Vitamin D and Metabolic Syndrome in Working Age Subjects from an Obesity Clinic
Luisella Vigna, Michela Carola Speciani, Amedea Silvia Tirelli, Francesca Bravi, Carlo La Vecchia, Caterina Conte, Francesca Gori
Nutrients.2023; 15(20): 4354. CrossRef - Vitamin D status and COVID-19 prevention in a worker subgroup in Italy
Francesca Ubaldi, Enrico Montanari, Lory Marika Margarucci, Claudio Caprara, Gianluca Gianfranceschi, Elena Scaramucci, Antonio Piccolella, Federica Valeriani, Vincenzo Romano Spica
Work.2023; 75(2): 391. CrossRef - Shift Work and Serum Vitamin D Levels: A Systematic Review and Meta-Analysis
Margherita Martelli, Gianmaria Salvio, Lory Santarelli, Massimo Bracci
International Journal of Environmental Research and Public Health.2022; 19(15): 8919. CrossRef - Prevalence of depression disorder in industrial workers: a meta-analysis
Sohrab Amiri
International Journal of Occupational Safety and Ergonomics.2022; 28(3): 1624. CrossRef - Prevalence of current and former smoking in industrial workers worldwide: a systematic review and meta-analysis
Sohrab Amiri, Seyed Morteza Hosseini
Journal of Addictive Diseases.2021; 39(3): 288. CrossRef - Effects of vitamin D on mood and sleep in the healthy population: Interpretations from the serotonergic pathway
Laura M. Huiberts, Karin C.H.J. Smolders
Sleep Medicine Reviews.2021; 55: 101379. CrossRef - Vitamin D levels and deficiency with different occupations: a systematic review
Daniel Sowah, Xiangning Fan, Liz Dennett, Reidar Hagtvedt, Sebastian Straube
BMC Public Health.2017;[Epub] CrossRef - Long working hours, job satisfaction, and depressive symptoms: a community-based cross-sectional study among Japanese employees in small- and medium-scale businesses
Akinori Nakata
Oncotarget.2017; 8(32): 53041. CrossRef - Depressive Symptom and Related Factors: A Cross-Sectional Study of Korean Female Workers Working at Traditional Markets
Won Ju Hwang, Jin Ah Kim, Sally H. Rankin
International Journal of Environmental Research and Public Health.2017; 14(12): 1465. CrossRef
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The relationship between quality of sleep and night shift rotation interval
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Jae Youn Kim, Chang Ho Chae, Young Ouk Kim, Jun Seok Son, Ja Hyun Kim, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Sun Il Kwon
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Ann Occup Environ Med 2015;27:31. Published online December 17, 2015
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DOI: https://doi.org/10.1186/s40557-015-0084-x
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Abstract
PDFPubReaderePub
- Background
Shift work is closely related with workers' health. In particular, sleep is thought to be affected by shift work. In addition, shift work has been reported to be associated with the type or direction of shift rotation, number of consecutive night shifts, and number of off-duty days. We aimed to analyze the association between the night shift rotation interval and the quality of sleep reported by Korean female shift workers. MethodsIn total, 2,818 female shift workers from the manufacturing industry who received an employee physical examination at a single university hospital from January to August in 2014 were included. Subjects were classified into three groups (A, B, and C) by their night shift rotation interval. The quality of sleep was measured using the Korean version of the Pittsburgh Sleep Quality Index (PSQI). Descriptive analysis, univariate logistic regression, and multivariate logistic regression were performed. ResultsWith group A as the reference, the odds ratio (OR) for having a seriously low quality of sleep was 1.456 (95% CI 1.171–1.811) and 2.348 (95% CI 1.852–2.977) for groups B and C, respectively. Thus, group C with the shortest night shift rotation interval was most likely to have a low quality of sleep. After adjustment for age, obesity, smoking status, alcohol consumption, exercise, being allowed to sleep during night shifts, work experience, and shift work experience, groups B and C had ORs of 1.419 (95% CI 1.134–1.777) and 2.238 (95% CI 1.737–2.882), respectively, compared to group A. ConclusionOur data suggest that a shorter night shift rotation interval does not provide enough recovery time to adjust the circadian rhythm, resulting in a low quality of sleep. Because shift work is influenced by many different factors, future studies should aim to determine the most optimal shift work model and collect accurate, prospective data.
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Citations
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Nasrin Asadi, Salman Torabi Gudarzi, Seyedeh Sahar Hosseini, Zahra Hashemi, Rozita Foladi Dehaghi
Shiraz E-Medical Journal.2024;[Epub] CrossRef - Night Shift Work and Sleep Disturbances in Women
Suleima P. Vasconcelos, Lucia C. Lemos, Claudia R.C. Moreno
Sleep Medicine Clinics.2023; 18(4): 533. CrossRef - Circadian secretion rhythm of GLP-1 and its influencing factors
Chuanfeng Liu, Yuzhao Liu, Yu Xin, Yangang Wang
Frontiers in Endocrinology.2022;[Epub] CrossRef - Which Shiftwork Pattern Is the Strongest Predictor for Poor Sleep Quality in Nurses?
Kampanat Wangsan, Naesinee Chaiear, Kittisak Sawanyawisuth, Piyanee Klainin-Yobas, Kanjana Simajareuk, Watchara Boonsawat
International Journal of Environmental Research and Public Health.2022; 19(21): 13986. CrossRef - Poor Sleep Quality in Nurses Working or Having Worked Night Shifts: A Cross-Sectional Study
Qiao Huang, Chong Tian, Xian-Tao Zeng
Frontiers in Neuroscience.2021;[Epub] CrossRef - Sleep and Association With Cardiovascular Risk Among Midwestern US Firefighters
Juan Luis Romero Cabrera, Mercedes Sotos-Prieto, Antonio García Ríos, Steven Moffatt, Costas A. Christophi, Pablo Pérez-Martínez, Stefanos N. Kales
Frontiers in Endocrinology.2021;[Epub] CrossRef - Association of Work Stress Level with Sleep Quality in Nurses and Medical Social Workers at a Tertiary Care Hospital of Wardha District
Vikram Singh, Pramita Muntode, Sonal Singh, Rutuj Waghmare, Sumit Kishore, Shobha Joshi, Rahul Thakur
Journal of Evolution of Medical and Dental Sciences.2021; 10(28): 2061. CrossRef - The analysis of sleep quality of social studies vocational associate degree students and the factors that affect sleep quality
Osman KURT, Refika DURNA, Ali Sırrı YILMAZ
Adıyaman Üniversitesi Sağlık Bilimleri Dergisi.2021; 7(3): 223. CrossRef - Investigation of Sleep Quality of Nurses and Its Relationship with Musculoskeletal Disorder Prevalence and Job Stress
Behnam Moradi, Samira Barakat
Journal of Occupational Hygiene Engineering.2021; 8(1): 26. CrossRef - Morning and evening salivary melatonin, sleepiness and chronotype: A comparative study of nurses on fixed day and rotating night shifts
Wegdan Bani Issa, Hanif Abdul Rahman, Najila Albluwi, A. B. Rani Samsudin, Suma Abraham, Roba Saqan, Lin Naing
Journal of Advanced Nursing.2020; 76(12): 3372. CrossRef - Nurses and Night Shifts: Poor Sleep Quality Exacerbates Psychomotor Performance
Marco Di Muzio, Giulia Diella, Emanuele Di Simone, Luana Novelli, Valentina Alfonsi, Serena Scarpelli, Ludovica Annarumma, Federico Salfi, Mariella Pazzaglia, Anna Maria Giannini, Luigi De Gennaro
Frontiers in Neuroscience.2020;[Epub] CrossRef - An Approach to Addressing Trainee Burnout: Revising Fellow Shift Scheduling in the Intensive Care Unit
Namita Jayaprakash, Craig E. Daniels, Courtney E. Bennett, Kianoush Kashani
Journal of Translational Critical Care Medicine.2019; 1(3): 103. CrossRef - The association between shift work-related sleep complaints and shift work intolerance
Hyuk Joo Lee, Kyung-Lak Son, Young Rong Bang, Hong Joon Jeon, Kiheon Lee, In-Young Yoon
Sleep and Biological Rhythms.2019; 17(1): 3. CrossRef - Work, sleep, and cholesterol levels of U.S. long-haul truck drivers
Michael K. LEMKE, Yorghos APOSTOLOPOULOS, Adam HEGE, Laurie WIDEMAN, Sevil SÖNMEZ
INDUSTRIAL HEALTH.2017; 55(2): 149. CrossRef - Work organization, sleep and metabolic syndrome among long-haul truck drivers
M. K. Lemke, Y. Apostolopoulos, A. Hege, L. Wideman, S. Sönmez
Occupational Medicine.2017; 67(4): 274. CrossRef - Erratum to: The relationship between quality of sleep and night shift rotation interval
Jae Youn Kim, Chang Ho Chae, Young Ouk Kim, Jun Seok Son, Ja Hyun Kim, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Soon Il Kwon
Annals of Occupational and Environmental Medicine.2016;[Epub] CrossRef - Influence of night duty on endoscopic therapy for bile duct stones
Mitsuru Sugimoto, Tadayuki Takagi, Rei Suzuki, Naoki Konno, Hiroyuki Asama, Ko Watanabe, Jun Nakamura, Hitomi Kikuchi, Yuichi Waragai, Mika Takasumi, Takuto Hikichi, Hiromasa Ohira
World Journal of Gastroenterology.2016; 22(42): 9387. CrossRef
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The Characteristics of Tinnitus and Hearing Threshold: In Workers with Noise Induced Hearing Loss from a Hospital Setting
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Nam Jeong Kim, Hyoung Ouk Park, Chang Sun Sim, Choong Ryeol Lee, Young Joo Kwon, Ji Ho Lee
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Korean Journal of Occupational and Environmental Medicine 2012;24(4):431-440. Published online December 31, 2012
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DOI: https://doi.org/10.35371/kjoem.2012.24.4.431
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Abstract
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- OBJECTIVES
This study was carried out to define the relationship between the characteristics of tinnitus and hearing threshold (puretone and speech) in workers with noise induced hearing loss (NIHL).
METHODS
A total of 189 cases(378 ears) from workers with compensation claims for NIHL during 2004-2009 were investigated. Various factors, including age, work carriers, body mass index (BMI), blood pressure, noise exposure level of worksite hearing threshold, speech discrimination score, pitch match, and loudness of tinnitus were analyzed.
RESULTS
The average hearing threshold of all subject was 44.2 dBHL, puretone audiometry thresholds in subjects with tinnitus were lower than the non-tinnitus group (except at 8000 Hz). Using speech audiometry, the tinnitus group showed a lower speech recognition threshold and speech discrimination score. The tinnitus group also had an average tinnitus frequency of 4195.2 Hz, loudness of 73.6 dB, and tinnitus sensation average of 6.0 dBSL. These frequencies of tinnitus were in the lowest puretone audiometry frequencies. Tinnitus loudness had a strong relationship with puretone and speech audiometry thresholds.
CONCLUSIONS
In cases beyond moderate hearing loss, the tinnitus group had a better puretone (except 8000 Hz) and speech hearing status, and most comfortable loudness (MCL) level. In addition, puretone and speech audiometry thresholds increase with tinnitus loudness.
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Citations
Citations to this article as recorded by - The Relationship Between Tinnitus Frequency and Speech Discrimination in Patients With Hearing Loss
Joo Hyung Oh, Taehun Lim, Joon Bum Joo, Ju Eun Cho, Pona Park, Jong Yang Kim
Korean Journal of Otorhinolaryngology-Head and Neck Surgery.2023; 66(3): 156. CrossRef - Efficiency Improvement of the Hearing Test Procedure Using Linear Regression
Heonzoo Lee, Sejin Kim, Rayoung Park, Sungsu Lee, Hyong-Ho Cho, Yonggwan Won
Journal of Digital Contents Society.2022; 23(12): 2489. CrossRef
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Effects of Workplace Noise and Hearing Protective Devices on Worker's Speech Intelligibility
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Hyoung Ouk Park, Chang Sun Sim, Joong Keun Kwon, Kyoo Sang Kim, Young Joo Kwon, Nam Jeong Kim, Min Suk Seo, Ji Ho Lee
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Korean Journal of Occupational and Environmental Medicine 2010;22(2):154-165. Published online June 30, 2010
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DOI: https://doi.org/10.35371/kjoem.2010.22.2.154
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Abstract
PDF
- OBJECTIVE: The objective of this study was to evaluate the degree of intelligible speech in workers wearing hearing protective devices and the differences in background noise type.
METHODS
A total 82 shipyard company employees and normal hearing volunteers were recruited as subjects from a company in Ulsan: subjects were classified to the hearing-impaired group or to the control group according to hearing status. They were tested pure tone and speech audiometry in varying test environments including signal-to-noise ratio and background noise type in a headphone and in a free field environment.
RESULTS
For both groups, the attenuation of hearing protective devices was greater at high frequencies. For the hearing-impaired group, speech discrimination scores differences between the unprotected and the protected ear were not significant between background noise type, when speech was presented at 65 dBA. However speech intelligibility in white noise background was lower than in the other background noise types when speech was presented at 75 dBA.
CONCLUSIONS
Workers' speech intelligibility increased with an increasing signal-to-noise ratio. Speech intelligibility was also dependent on background noise type. Workers and their colleagues were trained to pronounce words more loudly and more clearly when they wearing hearing protective devices or other communication methods that do not use sound signal should be considered.
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Citations
Citations to this article as recorded by - Effects of Hearing Protection Methods and Noise Directions on Bone-Conduction Sensitivity
Woojae Han
THE JOURNAL OF THE ACOUSTICAL SOCIETY OF KOREA.2013; 32(5): 423. CrossRef - An experimental study on the improving noise characteristic of hydraulic power unit
Gi Chun Lee, Yong Bum Lee
Journal of the Korean Society of Marine Engineering.2013; 37(6): 638. CrossRef
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Early Objectified Detection Method of Sensorineural Component in Hand Arm Vibration Syndrome
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Jae Kuk Yoon, Hun Lee, Nari Choy, Suk Hwan Kim, Hyoung Ouk Park, Ji Ho Lee, Cheol In Yoo
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Korean Journal of Occupational and Environmental Medicine 2009;21(2):143-153. Published online June 30, 2009
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DOI: https://doi.org/10.35371/kjoem.2009.21.2.143
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Abstract
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- OBJECTIVES
In order to determine find out the best methods for a more objective detection of neurologic abnormality in early hand arm vibration syndrome(HAVS), early with analyzing the validity of each of the detection methods was analyzed. We evaluated the relationships between the sensorineural stage of Stockholm-revised vibration syndrome classification and the results of several tests.
METHODS
497 workers were investigated for symptom, exposure duration, the types of tools used, and medical history from January 2000 to December 2007. Pain sense threshold, vibrotactile threshold, hand grasp force, finger grasp force, and a finger tapping frequency test were performed by the workers.
RESULTS
The grinder(67.3%) was the most commonly used tool and the mean exposure duration was 14.8 years. Although the pain sense and vibrotactile threshold level tended to increase according to sensorineural stage of the Stockholm classification, there was statistically significant difference in the vibrotactile threshold of 125, 250 Hz (p=0.006~0.038) but not in the pain sense threshold. Hand and finger grasp force tended to decrease according to the sensorineural stage of Stockholm classification and there was statistically significant difference(p=0.041,<0.001, 0.034) only on the right hand side. The tapping frequency also generally decreased according to the sensorineural stage of the Stockholm classification and there was statistically significant difference (p=0.002~0.019) only on the left hand side.
CONCLUSIONS
Although there is no single standardized method that can objectively diagnose the sensorineural component of early HAVS early, the combination of subjective symptoms, the sensorineural stage of Stockholm classification, the pain and vibrotactile threshold test, the hand and finger grasp force, and the finger agility (tapping) test can objectively detect sensorineural component of HAVS early.
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Citations
Citations to this article as recorded by - Application of cold intolerance symptom severity questionnaire among vibration-exposed workers as a screening tool for the early detection of hand-arm vibration syndrome: a cross-sectional study
A Ram Kim, Dae Yun Kim, Ji Soo Kim, Heun Lee, Joo Hyun Sung, Cheolin Yoo
Annals of Occupational and Environmental Medicine.2019;[Epub] CrossRef - Trend of Human Vibration Research in Korea
Hee-Sok Park
Journal of the Ergonomics Society of Korea.2013; 32(4): 293. CrossRef
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