{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T16:09:13Z","timestamp":1780330153643,"version":"3.54.1"},"reference-count":30,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T00:00:00Z","timestamp":1768953600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T00:00:00Z","timestamp":1768953600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100032253","name":"Nordic Cancer Union","doi-asserted-by":"publisher","award":["R276\u2010A15785"],"award-info":[{"award-number":["R276\u2010A15785"]}],"id":[{"id":"10.13039\/100032253","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl Journal of Cancer"],"published-print":{"date-parts":[[2026,6,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>During the first year of the COVID\u201019 pandemic, reported cancer cases declined in the Nordic countries, potentially reflecting delays in cancer diagnosis. We compared 1\u2010year relative survival (RS) and excess mortality of patients diagnosed with cancer in the Nordic countries in March\u2013December 2020 with that expected based on patients diagnosed in 2011\u20132019. We used flexible parametric RS models, defining excess mortality as the difference in total mortality between patients with cancer and the national population without cancer. We report the ratio between the observed and expected excess mortality (EMR) and the difference in 1\u2010year RS in percentage points (pp) by country, age, sex, and cancer site. Excess mortality of patients diagnosed during the pandemic was increased in all Nordic countries except Iceland. Swedish men had the highest EMR of 1.12 (95% CI 1.06, 1.17), corresponding to a 1.4 pp reduction in 1\u2010year RS (87.1%\u201385.8%). In women, the highest EMR was 1.10 (95% CI 1.03, 1.18) in Norway, corresponding to a 1\u2010year RS decrease of 1.2 pp (86.6%\u201385.5%). The largest site\u2010specific decreases in 1\u2010year RS were observed for liver cancer in Finnish and Swedish men, with decreases of 10.2 pp (45.3%\u201335.1%) and 7.2 pp (55.7%\u201348.5%), respectively. We found reduced 1\u2010year RS among Nordic patients diagnosed with cancer during the COVID\u201019 pandemic in 2020, especially in older patients and those with aggressive cancers. These reductions coincided with restrictions and potential delays in seeking healthcare.<\/jats:p>","DOI":"10.1002\/ijc.70336","type":"journal-article","created":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T15:06:16Z","timestamp":1769007976000},"page":"3121-3131","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Changes in 1\u2010year relative survival of patients with cancer during the\n                    <scp>COVID<\/scp>\n                    \u201019 pandemic in Denmark, Finland, Iceland, Norway, and Sweden: A population\u2010based cohort study"],"prefix":"10.1002","volume":"158","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-4612-1373","authenticated-orcid":false,"given":"Fernando Gonzalez","family":"Yli\u2010M\u00e4yry","sequence":"first","affiliation":[{"name":"Finnish Cancer Registry Cancer Society of Finland  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomas","family":"Tanskanen","sequence":"additional","affiliation":[{"name":"Finnish Cancer Registry Cancer Society of Finland  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karri","family":"Sepp\u00e4","sequence":"additional","affiliation":[{"name":"Finnish Cancer Registry Cancer Society of Finland  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1191-7231","authenticated-orcid":false,"given":"Anna L. V.","family":"Johansson","sequence":"additional","affiliation":[{"name":"Cancer Registry of Norway Norwegian Institute of Public Health  Oslo Norway"},{"name":"Department of Medical Epidemiology and Biostatistics Karolinska Institutet  Stockholm Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charlotte Wessel","family":"Skovlund","sequence":"additional","affiliation":[{"name":"Danish Cancer Institute Danish Cancer Society  Copenhagen Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lina Steinrud","family":"M\u00f8rch","sequence":"additional","affiliation":[{"name":"Danish Cancer Institute Danish Cancer Society  Copenhagen Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S\u00f8ren","family":"Friis","sequence":"additional","affiliation":[{"name":"Danish Cancer Institute Danish Cancer Society  Copenhagen Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon Mathis","family":"K\u00f8nig","sequence":"additional","affiliation":[{"name":"Danish Cancer Institute Danish Cancer Society  Copenhagen Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tom B\u00f8rge","family":"Johannesen","sequence":"additional","affiliation":[{"name":"Cancer Registry of Norway Norwegian Institute of Public Health  Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tor \u00c5ge","family":"Myklebust","sequence":"additional","affiliation":[{"name":"Cancer Registry of Norway Norwegian Institute of Public Health  Oslo Norway"},{"name":"Department of Research and Innovation M\u00f8re and Romsdal Hospital Trust  \u00c5lesund Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sasha","family":"Pejicic","sequence":"additional","affiliation":[{"name":"National Board of Health and Welfare  Stockholm Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Pettersson","sequence":"additional","affiliation":[{"name":"National Board of Health and Welfare  Stockholm Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eva Mar\u00eda","family":"Gu\u00f0mundsd\u00f3ttir","sequence":"additional","affiliation":[{"name":"Cancer Registry of Iceland Icelandic Cancer Society  Reykjavik Iceland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sirpa","family":"Hein\u00e4vaara","sequence":"additional","affiliation":[{"name":"Finnish Cancer Registry Cancer Society of Finland  Helsinki Finland"},{"name":"Department of Public Health, Faculty of Medicine University of Helsinki  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nea","family":"Malila","sequence":"additional","affiliation":[{"name":"Finnish Cancer Registry Cancer Society of Finland  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8624-6754","authenticated-orcid":false,"given":"Joonas","family":"Miettinen","sequence":"additional","affiliation":[{"name":"Finnish Cancer Registry Cancer Society of Finland  Helsinki Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johan","family":"Ahlgren","sequence":"additional","affiliation":[{"name":"Regional Cancer Center Central Sweden  Uppsala Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giske","family":"Ursin","sequence":"additional","affiliation":[{"name":"Cancer Registry of Norway Norwegian Institute of Public Health  Oslo Norway"},{"name":"Institute of Basic Medical Sciences University of Oslo  Oslo Norway"},{"name":"Department of Preventive Medicine University of Southern California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Janne","family":"Pitk\u00e4niemi","sequence":"additional","affiliation":[{"name":"Finnish Cancer Registry Cancer Society of Finland  Helsinki Finland"},{"name":"Department of Public Health, Faculty of Medicine University of Helsinki  Helsinki Finland"},{"name":"Health Sciences Unit, Faculty of Social Sciences Tampere University  Tampere Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,1,21]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1093\/heapro\/daab211"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/ijc.34029"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.15585\/mmwr.mm6936a4"},{"key":"e_1_2_10_5_1","unstructured":"Our World in Data.Data Page: Excess Mortality: Cumulative Deaths from all Causes Compared to Projection Based on Previous Years. Data Adapted from Human Mortality Database World Mortality Database Karlinsky & Kobak; 2024.https:\/\/ourworldindata.org\/grapher\/cumulative-excess-mortality-p-scores-projected-baseline. Accessed on October 10 2025"},{"key":"e_1_2_10_6_1","volume-title":"NORDCAN: Cancer Incidence, Mortality, Prevalence and Survival in the Nordic Countries, Version 9.4 (29.08.2024)","author":"Lar\u00f8nningen S","year":"2025"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1470\u20102045(20)30391\u20100"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.lanepe.2023.100680"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/ijc.35001"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1503\/cmaj.221512"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/ijc.34847"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.2147\/CLEP.S463160"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.3109\/02841861003782017"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1080\/0284186X.2017.1407039"},{"key":"e_1_2_10_15_1","unstructured":"PaceM LanzieriG GlickmanM et al.Revision of the European Standard Population. Eurostat Methodologies and Working Papers; 2013."},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.2340\/1651\u2010226X.2024.35232"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u20102796.2006.01677.x"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/sim.1203"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1093\/jncics\/pkae001"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1093\/ije\/dyw098"},{"key":"e_1_2_10_21_1","unstructured":"MiettinenJ RantanenM Sepp\u00e4K.popEpi: Functions for Epidemiological Analysis using Population Data; 2024.https:\/\/CRAN.R-project.org\/package=popEpi"},{"key":"e_1_2_10_22_1","unstructured":"CarstensenB PlummerM LaaraE et al.Epi: A Package for Statistical Analysis in Epidemiology; 2024.https:\/\/CRAN.R-project.org\/package=Epi"},{"key":"e_1_2_10_23_1","doi-asserted-by":"crossref","unstructured":"ClementsM LiuXR ChristoffersenB.rstpm2: Smooth Survival Models Including Generalized Survival Models; 2015.10.32614\/CRAN.package.rstpm2","DOI":"10.32614\/CRAN.package.rstpm2"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.1200\/OP.22.00522"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/ijc.33884"},{"key":"e_1_2_10_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1470\u20102045(20)30388\u20100"},{"key":"e_1_2_10_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.annonc.2021.02.024"},{"key":"e_1_2_10_28_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41416\u2010024\u201002931\u20100"},{"key":"e_1_2_10_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1470\u20102045(24)00107\u20104"},{"key":"e_1_2_10_30_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jgo.2015.12.002"},{"key":"e_1_2_10_31_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1470\u20102045(23)00293\u20100"}],"container-title":["International Journal of Cancer"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ijc.70336","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/ijc.70336","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ijc.70336","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T05:05:13Z","timestamp":1777439113000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/ijc.70336"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,1,21]]},"references-count":30,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2026,6,15]]}},"alternative-id":["10.1002\/ijc.70336"],"URL":"https:\/\/doi.org\/10.1002\/ijc.70336","archive":["Portico"],"relation":{},"ISSN":["0020-7136","1097-0215"],"issn-type":[{"value":"0020-7136","type":"print"},{"value":"1097-0215","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,1,21]]},"assertion":[{"value":"2024-12-12","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-01-05","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-01-21","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}