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. 2024:46:e2024071.
doi: 10.4178/epih.e2024071. Epub 2024 Aug 19.

Data profile: the Korean Workers' Compensation-National Health Insurance Service (KoWorC-NHIS) cohort

Jeehee Min  1 , Eun Mi Kim  2 , Jaiyong Kim  2 , Jungwon Jang  3 , Youngjin Choi  4 , Inah Kim  5
Affiliations

Data profile: the Korean Workers' Compensation-National Health Insurance Service (KoWorC-NHIS) cohort

Jeehee Min et al. Epidemiol Health. 2024.

Abstract

The Korean Workers' Compensation-National Health Insurance Service (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 socio-demographic 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 (80.0%), 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.

Keywords: Accident; Cohort studies; National Health Insurance Database; Occupational; Occupational injuries; Precarious employment.

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Conflict of interest statement

Conflict of interest

The authors have no conflicts of interest to declare for this study.

Figures

Figure 1.
Figure 1.
Korean Workers’ Compensation-National Health Insurance Service (KoWorC-NHIS) flow chart. NHIS, National Health Insurance Service.
See this image and copyright information in PMC

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