Evidence map›Paper›PMID 35419824›Full record

ArticleInternational journal of cancer2022

The impact of the COVID-19 pandemic on cancer diagnosis based on pathology notifications: A comparison across the Nordic countries during 2020.

Anna L V Johansson, Siri Larønningen, Charlotte Wessel Skovlund, Marnar Fríðheim Kristiansen, Lina Steinrud Mørch, Søren Friis, Tom Børge Johannesen, Tor Åge Myklebust, Anna Skog, David Pettersson and 8 more

Abstract read
In one paragraph

Article in International journal of cancer, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

  1. Epidemiology of Incidence and Mortality Due to Head and Neck Cancer in Poland in 2000 to 2022.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. COVID-19 and Lung Cancer Interactions: A Literature Review.Medical sciences (Basel, Switzerland) · 2025
    Review
  6. Observational
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
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  19. Article
  20. The impact of the COVID-19 pandemic on incidence gap in screen-detectable cancers: a cohort study in Greater Poland, Poland.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2024
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors.

Anna L V JohanssonCancer Registry of Norway, Oslo, Norway.ORCID 0000-0002-1191-7231
Siri LarønningenCancer Registry of Norway, Oslo, Norway.
Charlotte Wessel SkovlundDanish Cancer Society Research Center, Danish Cancer Society, Copenhagen, Denmark.
Marnar Fríðheim KristiansenCenter of Health Science, Faculty of Health Sciences, Tórshavn, Faroe Islands.
Lina Steinrud MørchDanish Cancer Society Research Center, Danish Cancer Society, Copenhagen, Denmark.
Søren FriisDanish Cancer Society Research Center, Danish Cancer Society, Copenhagen, Denmark.
Tom Børge JohannesenCancer Registry of Norway, Oslo, Norway.
Tor Åge MyklebustCancer Registry of Norway, Oslo, Norway.
Anna SkogCancer Registry of Norway, Oslo, Norway.
David PetterssonNational Board of Health and Welfare, Stockholm, Sweden.
Helgi BirgissonCancer Registry of Iceland, Icelandic Cancer Society, Reykjavik, Iceland.
Anni VirtanenFinnish Cancer Registry, Cancer Society of Finland, Helsinki, Finland.
Nea MalilaFinnish Cancer Registry, Cancer Society of Finland, Helsinki, Finland.
Janne PitkäniemiFinnish Cancer Registry, Cancer Society of Finland, Helsinki, Finland.
Tomas TanskanenFinnish Cancer Registry, Cancer Society of Finland, Helsinki, Finland.
Laufey TryggvadóttirCancer Registry of Iceland, Icelandic Cancer Society, Reykjavik, Iceland.
Giske UrsinCancer Registry of Norway, Oslo, Norway.
Mats LambeDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The severity of the COVID-19 pandemic and subsequent mitigation strategies have varied across the Nordic countries. In a joint Nordic population-based effort, we compared patterns of new cancer cases and notifications between the Nordic countries during 2020. We used pathology notifications to cancer registries in Denmark, the Faroe Islands, Finland, Iceland, Norway and Sweden to determine monthly numbers of pathology notifications of malignant and in situ tumours from January to December 2020 compared to 2019 (2017-2019 for Iceland and the Faroe Islands). We compared new cancer cases per month based on unique individuals with pathology notifications. In April and May 2020, the numbers of new malignant cases declined in all Nordic countries, except the Faroe Islands, compared to previous year(s). The largest reduction was observed in Sweden (May: -31.2%, 95% CI -33.9, -28.3), followed by significant declines in Finland, Denmark and Norway, and a nonsignificant decline in Iceland. In Denmark, Norway, Sweden and Finland the reporting rates during the second half of 2020 rose to almost the same level as in 2019. However, in Sweden and Finland, the increase did not compensate for the spring decline (annual reduction -6.2% and -3.6%, respectively). Overall, similar patterns were observed for in situ tumours. The COVID-19 pandemic led to a decline in rates of new cancer cases in Sweden, Finland, Denmark and Norway, with the most pronounced reduction in Sweden. Possible explanations include the severity of the pandemic, temporary halting of screening activities and changes in healthcare seeking behaviour.

Indexed as

COVID-19NeoplasmsDenmarkFinlandHumansIcelandNorwayPandemicsScandinavian and Nordic CountriesSwedencancerCOVID-19incidenceNordicSARS-CoV-2

Identifiers

PMID35419824
PMCPMC9087674

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.