Evidence map›Paper›PMID 29875471›Full record

ArticleBritish journal of cancer2018

Variation in treatment and survival of older patients with non-metastatic breast cancer in five European countries: a population-based cohort study from the EURECCA Breast Cancer Group.

Marloes G M Derks, Esther Bastiaannet, Mandy Kiderlen, Denise E Hilling, Petra G Boelens, Paul M Walsh, Elizabeth van Eycken, Sabine Siesling, John Broggio, Lynda Wyld and 11 more

Abstract read
In one paragraph

Article in British journal of cancer, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
–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

28 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

21 authors.

Marloes G M DerksDepartment of Surgery, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands.ORCID http://orcid.org/0000-0003-4327-8523
Esther BastiaannetDepartment of Surgery, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands.
Mandy KiderlenDepartment of Surgery, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands.
Denise E HillingDepartment of Surgery, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands.
Petra G BoelensDepartment of Surgery, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands.
Paul M WalshNational Cancer Registry of Ireland, Building 6800, Cork Airport Business Park, Kinsale Road, Cork, T12 CDF7, Ireland.
Elizabeth van EyckenBelgian Cancer Registry, Koningsstraat 215, Brussels, 1210, Belgium.
Sabine SieslingDepartment of Research, Netherlands Comprehensive Cancer Organisation (IKNL), Godebaldkwartier 419, Utrecht, 3511 DT, The Netherlands.
John BroggioPublic Health England, 5 St Philip's Place, Birmingham, B3 2PW, UK.
Lynda WyldDepartment of Oncology and Metabolism, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.
Maciej TrojanowskiGreater Poland Cancer Registry, Greater Poland Cancer Center, Garbary 15, Poznań, 60-101, Poland.
Agnieszka KolacinskaDepartment of Head and Neck Cancer Surgery, Department of Surgical Oncology, Medical University of Lodz, Kościuszki 4, Łódź, 90-419, Poland.
Justyna Chalubinska-FendlerDepartment of Radiotherapy, Medical University of Lodz, Kościuszki 4, Łódź, 90-419, Poland.
Ana Filipa GonçalvesPortuguese Oncology Institute of Porto, R. Dr. António Bernardino de Almeida 62, Porto, 4200-162, Portugal.
Tomasz NowikiewiczDepartment of Surgical Oncology, Ludwik Rydygier's Collegium Medicum, Jagiellońska 13-15, Bydgoszcz, 85-067, Poland.
Wojciech ZegarskiDepartment of Surgical Oncology, Ludwik Rydygier's Collegium Medicum, Jagiellońska 13-15, Bydgoszcz, 85-067, Poland.
Riccardo A AudisioDepartment of Surgery, St Helens Teaching Hospital, University of Liverpool, Marshalls Cross Rd, Saint Helens, St Helens, WA9 3DA, UK.
Gerrit-Jan LiefersDepartment of Surgery, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands.
Johanneke E A PortieljeDepartment of Medical Oncology, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands.
Cornelis J H van de VeldeDepartment of Surgery, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333 ZA, The Netherlands. c.j.h.van_de_velde@lumc.nl.
EURECCA Breast Cancer Group

Funding

Department of Health RP-PG-1209-10071
6 · The paper itself

Abstract

backgroundOlder patients are poorly represented in breast cancer research and guidelines do not provide evidence based recommendations for this specific group. We compared treatment strategies and survival outcomes between European countries and assessed whether variance in treatment patterns may be associated with variation in survival.

methodsPopulation-based study including patients aged ≥ 70 with non-metastatic BC from cancer registries from the Netherlands, Belgium, Ireland, England and Greater Poland. Proportions of local and systemic treatments, five-year relative survival and relative excess risks (RER) between countries were calculated.

resultsIn total, 236,015 patients were included. The proportion of stage I BC receiving endocrine therapy ranged from 19.6% (Netherlands) to 84.6% (Belgium). The proportion of stage III BC receiving no breast surgery varied between 22.0% (Belgium) and 50.8% (Ireland). For stage I BC, relative survival was lower in England compared with Belgium (RER 2.96, 95%CI 1.30-6.72, P < .001). For stage III BC, England, Ireland and Greater Poland showed significantly worse relative survival compared with Belgium.

conclusionsThere is substantial variation in treatment strategies and survival outcomes in elderly with BC in Europe. For early-stage BC, we observed large variation in endocrine therapy but no variation in relative survival, suggesting potential overtreatment. For advanced BC, we observed higher survival in countries with lower proportions of omission of surgery, suggesting potential undertreatment.

Indexed as

Disease ManagementAgedAged, 80 and overAge FactorsBelgiumBreast NeoplasmsDisease-Free SurvivalEnglandEuropeFemaleHumansIrelandMastectomyMiddle AgedNeoplasm Recurrence, LocalNeoplasm Staging

Identifiers

PMID29875471
PMCPMC6035184

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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.