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This nationwide retrospective analysis compared screening counts across 2019–2021 during the outbreak. Total cancer screening fell from 307,547 in 2020 to 103,289 in 2021 (66% decrease), with marked reductions in colon, oral, cervical, and breast screening. Larger declines were observed when contrasting 2019 with 2021, and rates varied by region as confirmed COVID-19 cases increased.",{"@graph":69,"@context":123},[70,84,106],{"@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":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/impact-of-the-covid-19-pandemic-on-population-based-cancer-screening-a-nationwide-retrospective-study-in-taiwan/383958/",{"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/impact-of-the-covid-19-pandemic-on-population-based-cancer-screening-a-nationwide-retrospective-study-in-taiwan/383958.png","ImageObject",300,407,{"name":92,"@type":93},"นรินทร์","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-26","2026-09-24",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",11,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What was the main purpose of the nationwide retrospective study in Taiwan?","Question",{"text":113,"@type":114},"To analyze how cancer screening numbers changed during the 2019–2021 COVID-19 outbreak period in Taiwan.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"How much did total cancer screening change between 2020 and 2021?",{"text":118,"@type":114},"Total cancer screening decreased from 307,547 to 103,289, a 66% drop.",{"name":120,"@type":111,"acceptedAnswer":121},"Which cancer screening showed the greatest reduction and were regional differences observed?",{"text":122,"@type":114},"Oral cancer screening showed the greatest reduction rate (83% drop compared with 2019 and 79% compared with 2020). 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BMC Health Services Research (2023) 23:878  \n[https://doi.org/10.1186/s12913-023-09901-x](https://doi.org/10.1186/s12913-023-09901-x)  \nBMC Health Services Research  \n RESEARCH Open Access  \nImpact of the COVID-19 pandemic on population-based cancer screening, a nationwide retrospective study in Taiwan  \nChih‑Hsuan Su 1,2, Pi‑Shan Hsu3,4 and Chu‑Sheng Lin3,5,6*  \nAbstract  \nBackground The Coronavirus disease 2019 (COVID‑19) pandemic has placed a great burden on Taiwan’s healthcare system. It has also had a great impact on other public health issues, including cancer screening. Delayed cancer screening was also noticed in the U. S. during the pandemic, which may have led to both delayed diagnosis and poor prognosis. In Taiwan, population‑based cancer screening for breast cancer, oral cancer, colon cancer and cervical cancer has been executed and ongoing for years.  \nMethod In this study we have analyzed the change in screening numbers for cancer during the period of the 2019 to 2021 COVID‑19 outbreak in Taiwan.  \nResults Through our results we found that total cancer screening numbers decreased from 307,547 to 103,289 (a 66% decrease) from the years 2020 to 2021. Specifically, a 63%, 79%, 65% and 71% decrease in screening cases was seen for colon cancer, oral cancer, cervical cancer and breast cancer, respectively, during that period. A similar condition was noticed when comparing 2019 to 2021 when the disclosed total cancer screening numbers decreased by 70%(2019–2021); 65%, 83%, 70% and 76% in colon cancer, oral cancer, cervical cancer and breast cancer, respec‑ tively. Among these various cancer screenings, oral cancer screening showed the greatest reduction rate (a drop of 83% compared to 2019 and 79% compared to 2020) . We also compared the reduction rates taken from different regions in Taiwan. It was in Taipei, where most COVID‑19 cases were noted, that the greatest reduction rate of cancer screening numbers occurred (a drop of76% compared to 2019 and 74% compared to 2020) . A proportional decrease of screening cases was also noticed in all areas when confirmed COVID‑19 cases rose.  \nConclusions Screening for cancers dropped significantly due to the pandemic and its effect on long‑term health needs to be evaluated. Additionally, efforts should be taken to address these cancer screening number deficits which have taken place during the COVID‑19 pandemic.  \nKeywords Oral cancer screening, Breast cancer screening, Colon cancer screening, Cervical cancer screening, Taiwan  \n*Correspondence: Chu‑Sheng Lin [billlin@vghtc.gov.tw](billlin@vghtc.gov.tw)  \nFull list of author information is available at the end of the article  \n© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, 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 changes were made. 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://creativecommons.org/licenses/by/4.0/](http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver ()[. The Creative Commons Public Domain Dedication waiver (](http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver ()[http://creativeco](http://creativeco)[mmons.org/publicdomain/zero/1.0/](mmons.org/publicdomain/zero/1.0/)) applies to the data made available in this article, unless otherwise stated in","cbCaiuyBAyV2xGhm","https://ap.wps.com/l/cbCaiuyBAyV2xGhm","pdf",1866195,"English","# Abstract\n## Background\n## Method\n## Results\n## Conclusions\n# Keywords","[{\"question\":\"What was the main purpose of the nationwide retrospective study in Taiwan?\",\"answer\":\"To analyze how cancer screening numbers changed during the 2019–2021 COVID-19 outbreak period in Taiwan.\"},{\"question\":\"How much did total cancer screening change between 2020 and 2021?\",\"answer\":\"Total cancer screening decreased from 307,547 to 103,289, a 66% drop.\"},{\"question\":\"Which cancer screening showed the greatest reduction and were regional differences observed?\",\"answer\":\"Oral cancer screening showed the greatest reduction rate (83% drop compared with 2019 and 79% compared with 2020). The largest reduction among regions occurred in Taipei, where most COVID-19 cases were noted.\"}]","Impact of the COVID-19 pandemic on population-based cancer screening - a nationwide retrospective study in Taiwan | PDF",1790260437]