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  • Johansson, Anna L., VKarolinska Institutet,Canc Registry Norway, POB 5313 Majorstuen, N-0304 Oslo, Norway.;Karolinska Inst, Dept Med Epidemiol & Biostat, POB 281, SE-17177 Stockholm, Sweden. (author)

Were cancer patients worse off than the general population during the COVID-19 pandemic? : A population-based study from Norway, Denmark and Iceland during the pre-vaccination era

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • Elsevier,2023
  • electronicrdacarrier

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  • LIBRIS-ID:oai:DiVA.org:uu-520215
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-520215URI
  • https://doi.org/10.1016/j.lanepe.2023.100680DOI
  • http://kipublications.ki.se/Default.aspx?queryparsed=id:154350797URI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Background In a population-based setting, we investigated the risks of testing positive for SARS-CoV-2 and developing severe COVID-19 outcomes among cancer patients compared with the general population.Methods In nationwide cohorts, we identified all individuals in Norway, Denmark and Iceland who tested positive for SARS-CoV-2 or had a severe COVID-19 outcome (hospitalisation, intensive care, and death) from March until December 2020, using data from national health registries. We estimated standardised incidence ratios (SIRs) with 95% confidence intervals (CIs) comparing cancer patients with the general population.Findings During the first wave of the pandemic, cancer patients in Norway and Denmark had higher risks of testing SARS-CoV-2 positive compared to the general population. Throughout 2020, recently treated cancer patients were more likely to test SARS-CoV-2 positive. In Iceland, cancer patients experienced no increased risk of testing positive. The risk of COVID-19-related hospitalisation was higher among cancer patients diagnosed within one year of hospitalisation (Norway: SIR = 2.43, 95% CI 1.89-3.09; Denmark: 2.23, 1.96-2.54) and within five years (Norway: 1.58, 1.35-1.83; Denmark: 1.54, 1.42-1.66). Risks were higher in recently treated cancer patients and in those diagnosed with haematologic malignancies, colorectal or lung cancer. Risks of COVID-19-related intensive care and death were higher among cancer patients. Interpretation Cancer patients were at increased risk of testing positive for SARS-CoV-2 during the first pandemic wave when testing availability was limited, while relative risks of severe COVID-19 outcomes remained increased in cancer patients throughout 2020. Recent cancer treatment and haematologic malignancy were the strongest risk factors.

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  • Skog, AnnaCanc Registry Norway, POB 5313 Majorstuen, N-0304 Oslo, Norway. (author)
  • Johannesen, Tom BorgeCanc Registry Norway, POB 5313 Majorstuen, N-0304 Oslo, Norway. (author)
  • Myklebust, Tor ageCanc Registry Norway, POB 5313 Majorstuen, N-0304 Oslo, Norway.;More & Romsdal Hosp Trust, Dept Res & Innovat, Alesund, Norway. (author)
  • Skovlund, Charlotte WesselDanish Canc Soc Res Ctr, Danish Canc Soc, Canc Surveillance & Pharmacoepidemiol, Strandboulevarden 49, DK-2100 Copenhagen, Denmark. (author)
  • Morch, Lina SteinrudDanish Canc Soc Res Ctr, Danish Canc Soc, Canc Surveillance & Pharmacoepidemiol, Strandboulevarden 49, DK-2100 Copenhagen, Denmark. (author)
  • Friis, SorenDanish Canc Soc Res Ctr, Danish Canc Soc, Canc Surveillance & Pharmacoepidemiol, Strandboulevarden 49, DK-2100 Copenhagen, Denmark. (author)
  • Gamborg, MadsDanish Canc Soc Res Ctr, Danish Canc Soc, Canc Surveillance & Pharmacoepidemiol, Strandboulevarden 49, DK-2100 Copenhagen, Denmark. (author)
  • Kristiansen, Marnar FrioheimFac Hlth Sci, Ctr Hlth Sci, Torshavn, Faroe Islands.;Natl Hosp Faroe Isl, Torshavn, Faroe Islands. (author)
  • Pettersson, DavidNatl Board Hlth & Welf, SE-10630 Stockholm, Sweden. (author)
  • Olafsdottir, Elinborg J.Iceland Canc Soc, ICS Res & Registrat Ctr, POB 5420, IS-105 Reykjavik, Iceland. (author)
  • Birgisson, HelgiIceland Canc Soc, ICS Res & Registrat Ctr, POB 5420, IS-105 Reykjavik, Iceland. (author)
  • Palsson, RunolfurLandspitali The Natl Univ Hosp Iceland, Saemundargata 2, IS-102 Reykjavik, Iceland.;Univ Iceland, Reykjavik, Iceland. (author)
  • Eythorsson, EliasLandspitali The Natl Univ Hosp Iceland, Saemundargata 2, IS-102 Reykjavik, Iceland. (author)
  • Irenaeus, SandraUppsala universitet,Cancerimmunterapi,Akadem Sjukhuset, Reg Canc Ctr Cent Sweden, SE-75185 Uppsala, Sweden.(Swepub:uu)sanir765 (author)
  • Lambe, MatsKarolinska Inst, Dept Med Epidemiol & Biostat, POB 281, SE-17177 Stockholm, Sweden.;Akadem Sjukhuset, Reg Canc Ctr Cent Sweden, SE-75185 Uppsala, Sweden. (author)
  • Ursin, GiskeCanc Registry Norway, POB 5313 Majorstuen, N-0304 Oslo, Norway.;Univ Oslo, Inst Basic Med Sci, Oslo, Norway.;Univ Southern Calif, Dept Prevent Med, Los Angeles, CA USA. (author)
  • Karolinska InstitutetCanc Registry Norway, POB 5313 Majorstuen, N-0304 Oslo, Norway.;Karolinska Inst, Dept Med Epidemiol & Biostat, POB 281, SE-17177 Stockholm, Sweden. (creator_code:org_t)

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  • In:The Lancet Regional Health: Elsevier312666-7762

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