The impact of the COVID-19 pandemic on radiotherapy delivery in Japan: An observational study based on the national database

Tamari, Keisuke; Kishigami, Maiko; Nagata, Yasushi; Mizowaki, Takashi; Kodaira, Takeshi; Onishi, Hiroshi; Ogawa, Kazuhiko; Shioyama, Yoshiyuki; Shigematsu, Naoyuki; Uno, Takashi

doi:https://doi.org/10.1002/cam4.6661

The impact of the COVID-19 pandemic on radiotherapy delivery in Japan: An observational study based on the national database

Tamari, Keisuke; Kishigami, Maiko; Nagata, Yasushi et al.

Cancer Medicine, 2023, 12(22), 21032-21040

アクセス数:1,054件（2025-07-18 09:24 集計）

固定URL: https://hdl.handle.net/11094/93320

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タイトル	The impact of the COVID-19 pandemic on radiotherapy delivery in Japan: An observational study based on the national database
著者	NRID 1000030718995 1000030718995 ORCID 0000-0002-2290-1905 0000-0002-2290-1905 researchmap permalink keisuketamari keisuketamari Scopus Author ID 56080486600 56080486600 著者名 Tamari, Keisuke
	著者名 Kishigami, Maiko
	NRID 1000010228033 1000010228033 著者名 Nagata, Yasushi
	NRID 1000090314210 1000090314210 著者名 Mizowaki, Takashi
	NRID 1000080303626 1000080303626 著者名 Kodaira, Takeshi
	NRID 1000030213804 1000030213804 著者名 Onishi, Hiroshi
	NRID 1000040253984 1000040253984 researchmap permalink read0097694 read0097694 Scopus Author ID 7404212602 7404212602 著者名 Ogawa, Kazuhiko
	NRID 1000010323304 1000010323304 著者名 Shioyama, Yoshiyuki
	NRID 1000030178868 1000030178868 著者名 Shigematsu, Naoyuki
	NRID 1000030302540 1000030302540 著者名 Uno, Takashi
キーワード等	COVID-19
	hypofractionation
	Japan
	observational study
	radiotherapy
内容	Tamari K., Kishigami M., Nagata Y., et al. The impact of the COVID-19 pandemic on radiotherapy delivery in Japan: An observational study based on the national database. Cancer Medicine 12, 21032 (2023); https://doi.org/10.1002/cam4.6661.
抄録	Background: This study analyzed the impact of the coronavirus disease 2019 (COVID-19) pandemic on radiotherapy delivery in Japan using a high-quality Japanese national database based on universal health coverage. Methods: We performed a retrospective observational study using National Database of Health Insurance Claims and Specific Health Checkups of Japan open data focused on radiotherapy between fiscal year (FY) 2019 and FY2020 and the number of COVID-19 cases from the Ministry of Health, Labour, and Welfare. We statistically analyzed the relationship between the number of COVID-19 cases and the number of radiotherapy deliveries in Japan as a whole and by prefecture. Results: The total number of external beam radiotherapy (EBRT) fractions was 4,472,140 in FY2019 and 4,227,673 in FY2020 (−5.8%). EBRT courses were 250,395 in FY2019 and 240,329 in FY2020 (−4.0%), stereotactic radiotherapy courses were 27,619 in FY2019 and 31,786 in FY2020 (+15.1%), and single-fraction palliative radiotherapy courses were 4124 in FY2019 and 5255 in FY2020 (+21.5%). The total number of breast and prostate hypofractionated radiotherapy (HFRT) fractions was 155,773 and 48,188 in FY2019, and 200,256 and 84,230 in FY2020 (+28.6% and +74.8%), respectively. In the Pearson correlation analysis, EBRT fractions were lower, and breast HFRT fractions were higher in prefectures with more COVID-19 cases. Conclusions: Overall, radiotherapy delivery in Japan was relatively stable after the pandemic, with an increase in HFRT. Also, EBRT fractions decreased, and breast HFRT were more likely to be used in prefectures with more COVID-19 cases.
出版者	John Wiley and Sons Inc
収録物名	Cancer Medicine
巻(号)	12(22)
ページ	21032-21040
刊行年月	2023-11-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/93320
eISSN	20457634
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1002/cam4.6661
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Cancer Medicine. 2023, 12(22), p. 21032-21040
DC.title	The impact of the COVID-19 pandemic on radiotherapy delivery in Japan: An observational study based on the national database
DC.creator	Tamari, Keisuke
	Kishigami, Maiko
	Nagata, Yasushi
	Mizowaki, Takashi
	Kodaira, Takeshi
	Onishi, Hiroshi
	Ogawa, Kazuhiko
	Shioyama, Yoshiyuki
	Shigematsu, Naoyuki
	Uno, Takashi
DC.publisher	John Wiley and Sons Inc
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2023-11-01
DC.identifier	https://doi.org/10.1002/cam4.6661
DC.subject	COVID-19
	hypofractionation
	Japan
	observational study
	radiotherapy
DC.description	Tamari K., Kishigami M., Nagata Y., et al. The impact of the COVID-19 pandemic on radiotherapy delivery in Japan: An observational study based on the national database. Cancer Medicine 12, 21032 (2023); https://doi.org/10.1002/cam4.6661.
DCTERMS.abstract	Background: This study analyzed the impact of the coronavirus disease 2019 (COVID-19) pandemic on radiotherapy delivery in Japan using a high-quality Japanese national database based on universal health coverage. Methods: We performed a retrospective observational study using National Database of Health Insurance Claims and Specific Health Checkups of Japan open data focused on radiotherapy between fiscal year (FY) 2019 and FY2020 and the number of COVID-19 cases from the Ministry of Health, Labour, and Welfare. We statistically analyzed the relationship between the number of COVID-19 cases and the number of radiotherapy deliveries in Japan as a whole and by prefecture. Results: The total number of external beam radiotherapy (EBRT) fractions was 4,472,140 in FY2019 and 4,227,673 in FY2020 (−5.8%). EBRT courses were 250,395 in FY2019 and 240,329 in FY2020 (−4.0%), stereotactic radiotherapy courses were 27,619 in FY2019 and 31,786 in FY2020 (+15.1%), and single-fraction palliative radiotherapy courses were 4124 in FY2019 and 5255 in FY2020 (+21.5%). The total number of breast and prostate hypofractionated radiotherapy (HFRT) fractions was 155,773 and 48,188 in FY2019, and 200,256 and 84,230 in FY2020 (+28.6% and +74.8%), respectively. In the Pearson correlation analysis, EBRT fractions were lower, and breast HFRT fractions were higher in prefectures with more COVID-19 cases. Conclusions: Overall, radiotherapy delivery in Japan was relatively stable after the pandemic, with an increase in HFRT. Also, EBRT fractions decreased, and breast HFRT were more likely to be used in prefectures with more COVID-19 cases.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	93320
citation_title	The impact of the COVID-19 pandemic on radiotherapy delivery in Japan: An observational study based on the national database
citation_author	Tamari, Keisuke
	Kishigami, Maiko
	Nagata, Yasushi
	Mizowaki, Takashi
	Kodaira, Takeshi
	Onishi, Hiroshi
	Ogawa, Kazuhiko
	Shioyama, Yoshiyuki
	Shigematsu, Naoyuki
	Uno, Takashi
citation_publisher	John Wiley and Sons Inc
citation_language	英語
citation_date	2023-11-01
citation_journal_title	Cancer Medicine
citation_volume	12
citation_issue	22
citation_firstpage	21032
citation_lastpage	21040
citation_doi	https://doi.org/10.1002/cam4.6661
citation_public_url	https://hdl.handle.net/11094/93320

The impact of the COVID-19 pandemic on radiotherapy delivery in Japan: An observational study based on the national database

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