Evidence map›Paper›PMID 33077767›Full record

ArticleScientific reports2020

In situ breast cancer incidence patterns in Iceland and differences in ductal carcinoma in situ treatment compared to Sweden.

Arnar S Agustsson, Helgi Birgisson, Bjarni A Agnarsson, Thorvaldur Jonsson, Hrefna Stefansdottir, Fredrik Wärnberg, Mats Lambe, Laufey Tryggvadottir, Asgerdur Sverrisdottir

Abstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
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

9 authors.

Arnar S AgustssonFaculty of Medicine, University of Iceland, Reykjavík, Iceland. arnarsn93@gmail.com.
Helgi BirgissonIcelandic Cancer Registry, Icelandic Cancer Society, Reykjavík, Iceland.
Bjarni A AgnarssonFaculty of Medicine, University of Iceland, Reykjavík, Iceland.
Thorvaldur JonssonLandspitali, The National University Hospital of Iceland, Reykjavík, Iceland.
Hrefna StefansdottirIcelandic Cancer Registry, Icelandic Cancer Society, Reykjavík, Iceland.
Fredrik WärnbergSahlgrenska Academy, Gothenburg University, Göteborg, Sweden.
Mats LambeRegional Cancer Centre Uppsala-Örebro, Uppsala, Sweden.
Laufey TryggvadottirFaculty of Medicine, University of Iceland, Reykjavík, Iceland.
Asgerdur SverrisdottirLandspitali, The National University Hospital of Iceland, Reykjavík, Iceland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The purpose was to review the incidence of in situ carcinoma in Iceland after initiating population-based mammography screening in 1987 and to compare management of ductal carcinoma in situ (DCIS) between Iceland and the Uppsala-Örebro region (UÖR) in Central Sweden. The Icelandic Cancer Registry provided data on in situ breast carcinomas for women between 1957 and 2017. Clinical data for women with DCIS between 2008 and 2014 was extracted from hospital records and compared to women diagnosed in UÖR. In Iceland, in situ carcinoma incidence increased from 7 to 30 per 100 000 women per year, following the introduction of organised mammography screening. The proportion of in situ carcinoma of all breast carcinomas increased from 4 to 12%. More than one third (35%) of women diagnosed with DCIS in Iceland were older than 70 years versus 18% in UÖR. In Iceland, 49% of all DCIS women underwent mastectomy compared to 40% in UÖR. The incidence of in situ carcinoma in Iceland increased four-fold after the uptake of population-based mammography screening causing considerable risk of overtreatment. Differences in treatment of DCIS were seen between Iceland and UÖR, revealing the importance of quality registration for monitoring patterns of management.

Indexed as

MastectomyAdultAgedBreast NeoplasmsCarcinoma, Intraductal, NoninfiltratingEarly Detection of CancerFemaleHumansIcelandIncidenceMass ScreeningMiddle AgedSweden

Identifiers

PMID33077767
PMCPMC7572374

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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.