Evidence map›Paper›PMID 31173648›Full record

ArticleInternational journal of cancer2020

Associations of pregnancy-related factors and birth characteristics with risk of endometrial cancer: A Nordic population-based case-control study.

Britton Trabert, Rebecca Troisi, Tom Grotmol, Anders Ekbom, Anders Engeland, Mika Gissler, Ingrid Glimelius, Laura Madanat-Harjuoja, Henrik Toft Sørensen, Steinar Tretli and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in International journal of cancer, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 2 pooled it
1.0field-weighted citation impact, top 21% of its field
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

15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 22 citations in OpenAlex.

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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

12 authors at 7 institutions in 5 countries.

Britton TrabertDivision of Cancer Epidemiology and Genetics, Department of Health and Human Services, National Cancer Institute, National Institutes of Health, Bethesda, MD.ORCID 0000-0002-1539-6090
Rebecca TroisiDivision of Cancer Epidemiology and Genetics, Department of Health and Human Services, National Cancer Institute, National Institutes of Health, Bethesda, MD.ORCID 0000-0003-3520-2916
Tom GrotmolCancer Registry of Norway, Oslo, Norway.
Anders EkbomDepartment of Medicine, Division of Clinical Epidemiology, Karolinska Institutet, Stockholm, Sweden.
Anders EngelandDivision of Mental and Physical Health, Norwegian Institute of Public Health, Bergen, Norway.
Mika GisslerInformation Services Department, National Institute for Health and Welfare (THL), Helsinki, Finland.
Ingrid GlimeliusDepartment of Medicine, Division of Clinical Epidemiology, Karolinska Institutet, Stockholm, Sweden.
Laura Madanat-HarjuojaCancer Society of Finland, Finnish Cancer Registry, Helsinki, Finland.
Henrik Toft SørensenDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
Steinar TretliCancer Registry of Norway, Oslo, Norway.
Anne Gulbech OrdingDepartment of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.ORCID 0000-0002-8073-7664
Tone BjørgeCancer Registry of Norway, Oslo, Norway.ORCID 0000-0002-9096-5257
Cancer Registry of Norway · NOAarhus University Hospital · DKKarolinska Institutet · SENational Institutes of Health · USNorwegian Institute of Public Health · NOUniversity of Helsinki · FIUppsala University · SE

Funding

Hormone-Related CancersZIACP010126 · NCI · DIVISION OF CANCER EPIDEMIOLOGY AND GENETICS · PI GIERACH, GRETCHEN · 2009 to 2025
$103.5M
Therapeutic and Diagnostic Factors as Related to Cancer RiskZIACP010128 · NCI · DIVISION OF CANCER EPIDEMIOLOGY AND GENETICS · PI GIERACH, GRETCHEN · 2009 to 2025
$8.1M
Intramural NIH HHS ZIA CP010126
6 · The paper itself

Abstract

Many pregnancy-related factors are associated with reduced endometrial cancer risk. However, it remains unclear whether pregnancy-related complications (e.g., hypertensive conditions) are associated with risk and whether these associations vary by endometrial cancer subtype. Thus, we evaluated the risk of endometrial cancer, overall and by subtype, in relation to pregnancy-related factors, pregnancy complications and birth characteristics. Utilizing population-based register data from four Nordic countries, we conducted a nested case-control analysis of endometrial cancer risk. We included 10,924 endometrial cancer cases and up to 10 matched controls per case. Odds ratios (ORs) with 95% confidence intervals (CIs) were derived from unconditional logistic regression models. We further evaluated associations by individual histology (i.e., endometrioid, serous, etc.) or, for rare exposures (e.g., pregnancy complications), by dualistic type (Type I [n = 10,343] and Type II [n = 581]). Preexisting and pregnancy-related hypertensive conditions were associated with increased endometrial cancer risk (OR [95% CI]: preexisting hypertension 1.88 [1.39-2.55]; gestational hypertension 1.47 [1.33-1.63]; preeclampsia 1.43 [1.30-1.58]), with consistent associations across dualistic type. Increasing number of pregnancies (≥4 vs. 1 birth: 0.64 [0.59-0.69]) and shorter time since last birth (<10 vs. ≥30 years: 0.34 [0.29-0.40]) were associated with reduced endometrial cancer risk, with consistent associations across most subtypes. Our findings support the role for both hormonal exposures and cell clearance as well as immunologic/inflammatory etiologies for endometrial cancer. This research supports studying endometrial hyperplasia, a precursor condition of endometrial cancer, in the context of pregnancy-related exposures, as this may provide insight into the mechanisms by which pregnancy affects subsequent cancer risk.

Indexed as

AdultCase-Control StudiesDiabetes, GestationalEndometrial NeoplasmsFemaleHumansHypertension, Pregnancy-InducedParityPregnancyPregnancy ComplicationsRegistriesRiskScandinavian and Nordic CountriesYoung Adultendometrial cancerhypertensionNordic countriespreeclampsiapregnancy timing

Identifiers

PMID31173648
PMCPMC6898733
OpenAlexW2961750772

What OpenQuestion holds

Textmetadata
LicenceTDM
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.