Evidence map›Paper›PMID 29855445›Full record

Observational studyJournal of musculoskeletal & neuronal interactions2018

Combined hormonal contraceptives use and bone mineral density changes in adolescent and young women in a prospective population-based Canada-wide observational study.

Tatjana S Brajic, Claudie Berger, Katharina Schlammerl, Heather Macdonald, Shirin Kalyan, David A Hanley, Jonathan D Adachi, Christopher S Kovacs, Jerilynn C Prior, CaMos Research Group

Open access · greenAbstract readObservational Study
In one paragraph

Observational study in Journal of musculoskeletal & neuronal interactions, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 7% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. "The pill" suppresses adolescent bone growth, no matter the estrogen dose.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2021
    Article
  9. Review
  10. Article
  11. Review
  12. Innovations in Women's Bone Health-Appreciating Important "Bone Variables" Besides Estrogen.International journal of environmental research and public health · 2018
    Article
  13. EFFECT OF ORAL CONTRACEPTIVES ON BONE MINERAL DENSITY.Acta endocrinologica (Bucharest, Romania : 2005)
    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

10 authors at 1 institution in 1 country.

Tatjana S BrajicCentre for Menstrual Cycle and Ovulation Research, Medicine/Endocrinology, University of British Columbia, Vancouver, B.C., Canada.
Claudie Berger
Katharina Schlammerl
Heather Macdonald
Shirin Kalyan
David A Hanley
Jonathan D Adachi
Christopher S Kovacs
Jerilynn C Prior
CaMos Research Group
University of British Columbia · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo assess combined hormonal contraceptives (CHC) use and adolescent women's peak areal bone mineral density (BMD) accrual.

methodsWe enrolled 527 randomly selected women across Canada (2004-6) divided by age into adolescents (16-19) and young adults (20-24) and by CHC use to ever (E-CHC)/never (N-CHC) users. At baseline and year 2 we measured height, weight, and BMD at lumbar spine (L1-4), femoral neck, and total hip sites. Interviewer-administered questionnaires addressed menarche age, cigarette and alcohol use, calcium/vitamin D intakes, physical activity and estrogen dose (≤30/>30 micrograms). Linear regression models examined associations of CHC use with 2-year BMD change adjusted for bone-related variables.

resultsOf 307 women with complete data, 229 (75%) used CHC. N-CHC adolescents gained significantly more unadjusted total hip BMD +0.012 g/cm

conclusionsAdolescent CHC users in a random population demonstrated less hip region peak BMD accrual than non-users. This requires randomized control trial confirmation.

Indexed as

Absorptiometry, PhotonAdolescentBone DensityCanadaContraceptives, Oral, CombinedFemaleFemur NeckHumansLumbar VertebraeProspective StudiesYoung AdultContraceptives, Oral, Combined

Identifiers

PMID29855445
PMCPMC6016495
OpenAlexW2979621561

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.