Clinical trial · Observational
Epidemiological Study of Korean Radiation Workers
Health Effects Associated With Occupational Radiation Exposure Among Korean Radiation Workers (Korean Radiation Workers Study)
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Health risks of radiation exposure in the moderate-to-high dose range have been well established. However, the risk remains unclear at low-dose ranges with protracted low-dose rate exposure, which is typical of occupational exposure. The purpose of this study is to construct a cohort of Korean radiation workers and to assess health effects associated with occupational radiation exposure. The study population is expected to be about 190,000 Korean radiation workers who have been registered with the Nuclear Safety and Security Commission since 1984. The national dose registry, the national cancer registry, the national vital statistics registry, and the national health insurance data are collected based on the Nuclear Safety Act. Through the linkage of those collected data, we will evaluate radiation-induced health risks including cancer and non-cancer diseases.
Conditions
Conditions (4)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Leukemia, Radiation-Induced | Radiation-Related Leukemia | ALIAS | 0.90 |
| Neoplasms, Radiation-Induced | Radiation-Related Neoplasm | ALIAS | 0.90 |
| Occupational Exposure to Radiation | — | UNRESOLVED | — |
| Radiation Effects | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Occupational radiation exposure | Radiation | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- label
- Korean radiation workers
- description
- The study population is Korean radiation workers exposed to ionizing radiation in workplaces. Diagnostic medical radiation workers were not included in the study population.
- interventionNames
- Radiation: Occupational radiation exposure
Primary outcomes (2)
- measure
- Radiation-induced cancer risk
- timeFrame
- year 4
- description
- Cancer risk associated with occupational radiation exposure
- measure
- Radiation-induced cancer risk
- timeFrame
- year 9
- description
- Cancer risk associated with occupational radiation exposure
Secondary outcomes (2)
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 16 Years
Show eligibility criteria text
Inclusion Criteria: * Korean radiation workers in the national dose registry (except for diagnostic medical radiation workers) Exclusion Criteria: * Unidentified personal identification numbers * Foreigner
References
Publications (2)
- BACKGROUNDSeo S, Lim WY, Lee DN, Kim JU, Cha ES, Bang YJ, Lee WJ, Park S, Jin YW. Assessing the health effects associated with occupational radiation exposure in Korean radiation workers: protocol for a prospective cohort study. BMJ Open. 2018 Mar 30;8(3):e017359. doi: 10.1136/bmjopen-2017-017359. PMID 29602835
- RESULTLee D, Cha ES, Park S, Sung H, Noh E, Jeong H, Jang WI, Seo S. Cohort Profile: The Korean Radiation Workers Study (KRWS). Int J Epidemiol. 2024 Apr 11;53(3):dyae060. doi: 10.1093/ije/dyae060. No abstract available. PMID 38628072