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The study builds a cohort of 37,011 workers (2002–2021) from Korea National Health Insurance Service data and defines cancer outcomes using ICD-10. Incidence risk is evaluated via age- and sex-specific standardized incidence ratios (SIRs) and 95% confidence intervals. Overall incidence is similar to or lower than the general population, with elevated risks for specific cancers.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/cancer-risk-among-air-transportation-industry-workers-in-korea-a-national-health-registry-based-study/332439/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/cancer-risk-among-air-transportation-industry-workers-in-korea-a-national-health-registry-based-study/332439.png","ImageObject",300,407,{"name":92,"@type":93},"Theodore","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-21",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What was the study’s primary objective?","Question",{"text":112,"@type":113},"To assess cancer risk among air transportation industry workers in Korea by analyzing cancer incidence using national health registry-based cohort data.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How was the cohort constructed and what data were used?",{"text":117,"@type":113},"A cohort of 37,011 workers was constructed using Korea National Health Insurance Service database records from 2002 to 2021.",{"name":119,"@type":110,"acceptedAnswer":120},"Which cancer types showed higher incidence compared with the general population?",{"text":121,"@type":113},"Overall incidence was similar to or lower than the general population, but higher SIRs were observed for nasopharyngeal cancer and non-Hodgkin lymphoma in men, and for breast and genital cancer and thyroid cancer in women.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},332439,1790236482,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":52,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144,"preview_page_count":4},7971461740886,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Park etal. BMC Public Health (2024) 24:2435 BMC Public Health  \n[https://doi.org/10.1186/s12889-024-19904-w](https://doi.org/10.1186/s12889-024-19904-w)  \nRESEARCH Open Access  \nCancer risk among air transportation industry workers in Korea: a national health registrybased study  \nSoojin Park 1, Ga Bin Lee 1, Dalnim Lee 1, Eun-Shil Cha 1, Kyunghee Han2, Minsu Cho 1 and Songwon Seo 1*  \nAbstract  \nBackground Flight attendants face various risk factors in their working environments, particularly occupational exposure to cosmic radiation. This study aimed to assess cancer risk among air transportation industry workers, including flight attendants, in Korea by constructing a cohort using national health registry-based data and analyzing cancer incidence risk.  \nMethods We used the Korea National Health Insurance Service database from 2002 to 2021 to construct a cohort of 37,011 workers in the air transportation industry. Cancer incidence was defined using the tenth version of the International Classification of Diseases. We calculated the age-and sex-specific standardized incidence ratios (SIRs) and 95% confidence intervals (CIs) by applying the cancer incidence rate of the general population between 2002 and 2019.  \nResults Approximately 5% of the cohort developed cancer. Overall, the cancer incidence in the cohort was similar to or lower than that of the general population, with the SIRs for all cancers being lower. However, significantly higher SIRs were observed for nasopharyngeal cancer (SIR, 3 . 21; 95% CI, 1.71–5.48) and non-Hodgkin lymphoma (SIR, 1. 57; 95% CI, 1.02–2. 32) in male workers and breast and genital cancer (SIR, 1. 51; 95% CI, 1.34–1. 70) and thyroid cancer (SIR, 1. 25; 95% CI, 1.05–1.47) in female workers.  \nConclusions The lower overall cancer incidence among air transportation industry workers observed in this study could indicate the “healthy worker effect”; however, the incidences of certain cancers were higher than those in the general population. Given that these workers are exposed to multiple occupational and lifestyle-related risk factors, including cosmic radiation, further studies are necessary to determine radiation-induced cancer risk while considering potential confounding factors.  \nKeywords Aircrew, Pilot, Neoplasms, Occupational exposure, Cosmic radiation  \n*Correspondence: Songwon Seo [seo@kirams. re.kr](seo@kirams. re.kr)  \n1National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, 75 Nowon-ro, Nowon-gu, Seoul 01812, Republic of Korea  \n2Department of Health and Safety Convergence Science, Korea University College of Health Science, Seoul, South Korea  \n© The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit [http://](http://)[ ](http://)[creativecommons.org/l](creativecommons.org/l)icenses/by-nc-nd/4.0/.  \nPark et al. BMC Public Health (2024) 24:2435  \nBackground  \nFlight attendants encounter various physical, biological, chemical, and psychosocial stressors while performing their in-flight duties. Among these, cosmic radiation is","cbCaibH4jw12E15K","https://ap.wps.com/l/cbCaibH4jw12E15K","pdf",1347798,"English","# Abstract\n# Background\n# Methods\n# Results\n# Conclusions\n# Keywords","[{\"question\":\"What was the study’s primary objective?\",\"answer\":\"To assess cancer risk among air transportation industry workers in Korea by analyzing cancer incidence using national health registry-based cohort data.\"},{\"question\":\"How was the cohort constructed and what data were used?\",\"answer\":\"A cohort of 37,011 workers was constructed using Korea National Health Insurance Service database records from 2002 to 2021.\"},{\"question\":\"Which cancer types showed higher incidence compared with the general population?\",\"answer\":\"Overall incidence was similar to or lower than the general population, but higher SIRs were observed for nasopharyngeal cancer and non-Hodgkin lymphoma in men, and for breast and genital cancer and thyroid cancer in women.\"}]","Cancer risk among air transportation industry workers in Korea - a national health registry-based study | PDF",1789998197,25]