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Data resource profile: the Korean Workers’ Compensation-National Health Insurance Service (KoWorC-NHIS) cohort
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Jeehee Min, Eun Mi Kim, Jaiyong Kim, Jungwon Jang, Youngjin Choi, Inah Kim
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Epidemiol Health. 2024;e2024071. Published online August 19, 2024
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DOI: https://doi.org/10.4178/epih.e2024071
[Accepted]
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Abstract
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Abstract
The KoWorC-NHIS cohort was established to investigate the longitudinal health outcomes of Korean workers who have been compensated for occupational injuries or diseases. This cohort study, which utilized data spanning from 2004 to 2015, merged workers' compensation insurance claim data with the National Health Insurance Database (NHID), encompassing 858,793 participants. The data included sociodemographic factors such as age, sex, income, address, insurance type, and disability grade. It also covered the types of occupational accidents, International Classification of Diseases, 10th revision codes for diseases or accidents, work tenure, industry, occupation code, and company size. Additional details such as the occupational hire date, date of claim, date of recognition, and affected body parts were recorded. The cohort predominantly consisted of male workers (80%), with the majority experiencing their first occupational accident in their 40s (27.6%) or 50s (25.3%). Notably, 93.1% of the cases were classified as occupational injuries. By integrating this data with that from the NHID, updates on health utilization, employment status, and income changes were made annually. The follow-up period for this study is set to conclude in 2045.
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Association between the safety climate and occupational injury in the Korean working population: a cross-sectional study
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Jeehee Min, Tae-Won Jang, Hye-Eun Lee, Mo-Yeol Kang, Seong-Sik Cho
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Epidemiol Health. 2024;e2024082. Published online October 1, 2024
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DOI: https://doi.org/10.4178/epih.e2024082
[Accepted]
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Abstract
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Abstract
OBJECTIVES Preventing occupational injuries remains a significant challenge in Korea. A positive safety climate can contribute to reducing workplace injuries. However, the impact of safety climate on preventing occupational injuries among the Korean workforce has not been adequately explored. Therefore, this study aimed to investigate the relationship between the perceived safety climate and occupational injuries within the Korean working population.
METHODS This study used baseline data from the Korean Work, Sleep, and Health Study (KWSH). The safety climate was measured using the brief version of the Nordic Safety Climate Questionnaire. Occupational injury was determined by whether injuries or accidents had occurred at workplaces in the past year. Logistic regression analysis was performed to examine the association between the safety climate and occupational injury.
RESULTS Participants who reported an unfavorable workplace safety climate were more likely to experience occupational injuries. Multiple logistic regression analysis revealed that the adjusted odds ratio (OR) for occupational injuries in an unfavorable safety climate was 2.20 (95% confidence interval [CI], 1.38–3.51) compared to a favorable safety climate. Specifically, factors such as “not encouraging employees to follow safety rules when on a tight schedule” (OR, 2.02; 95% CI, 1.25–3.24) and “not helping each other work safely” (OR, 1.98; 95% CI, 1.17–3.25) were significantly associated with occupational injuries.
CONCLUSIONS An unfavorable safety climate was associated with increased occupational injuries among Korean workers. Improving the safety climate in the workplace may reduce occupational injuries in Korea.
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