Evidence map›Paper›PMID 25345919›Full record

ArticleBritish journal of clinical pharmacology2015

Hormonal contraceptive use and risk of glioma among younger women: a nationwide case-control study.

Lene Andersen, Søren Friis, Jesper Hallas, Pernille Ravn, Bjarne W Kristensen, David Gaist

Open access · greenAbstract read
In one paragraph

Article in British journal of clinical pharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 3 pooled it
0.8field-weighted citation impact, top 27% 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

14 citing papers in PubMed, 3 syntheses or guidelines pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Environmental Hazards and Glial Brain Tumors: Association or Causation?International journal of molecular sciences · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Astrocytoma: A Hormone-Sensitive Tumor?International journal of molecular sciences · 2020
    Review
  10. Article
  11. Review
  12. Use of MendelianFrontiers in genetics · 2018
    Review
  13. Article
  14. 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

6 authors at 2 institutions in 1 country.

Lene AndersenDepartment of Neurology, Odense University Hospital, Sdr. Boulevard 29, 5000, Odense, Denmark; Institute of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Sdr. Boulevard 29, 5000, Odense, Denmark.
Søren Friis
Jesper Hallas
Pernille Ravn
Bjarne W Kristensen
David Gaist
University of Southern Denmark · DKUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimOral contraceptive use influences the risk for certain cancers. However, few studies have examined any link with risk of central nervous system tumours. We investigated the association between hormonal contraceptive use and glioma risk among premenopausal women in a population-based setting.

methodsUsing national administrative and health registries in Denmark to conduct a nationwide case-control study, we identified all women ages 15 to 49 years with a first time diagnosis of histologically verified glioma between 2000 and 2009. Each case was age-matched to eight population controls using risk set sampling. Based on prescription data, exposure until 2 years prior to the index date was categorized according to hormonal contraceptive type, i.e. combined oestrogen-progestagen or progestagen only, and duration of use (<1, 1 to <5, ≥5 years). We used conditional logistic regression to compute odds ratios (ORs) with 95% confidence intervals (CIs) for glioma associated with hormonal contraceptive use, adjusting for potential confounders.

resultsWe identified 317 cases and 2126 controls. Ever use of hormonal contraceptive was associated with an OR of 1.5 (95% CI 1.2, 2.0) and the OR increased with duration of use (long term, ≥5 years: OR 1.9; 95% CI 1.2, 2.9). The association between long term hormonal contraceptive use and glioma risk was most pronounced for progestagen only therapy (OR 2.4; 95% CI 1.1, 5.1), especially when this regimen constituted the sole hormonal contraceptive therapy (OR 4.1; 95% CI 0.8, 20.8).

conclusionLong term hormonal contraceptive use may increase the risk of glioma.

Indexed as

AdolescentAdultBrain NeoplasmsCase-Control StudiesContraceptives, Oral, HormonalDenmarkFemaleGliomaHumansMiddle AgedOdds RatioRiskYoung AdultContraceptives, Oral, Hormonalbrain tumour epidemiologycase-control studygliomahormonal contraceptiverisk

Identifiers

PMID25345919
PMCPMC4386952
OpenAlexW1916255048

What OpenQuestion holds

Textmetadata
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.