Evidence map›Paper›PMID 32398652›Full record

ArticleNature communications2020

Child volunteers in a women's paramilitary organization in World War II have accelerated reproductive schedules.

Robert Lynch, Virpi Lummaa, Michael Briga, Simon N Chapman, John Loehr

Abstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. Social and Biological Transgenerational Underpinnings of Adolescent Pregnancy.International journal of environmental research and public health · 2021
    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

5 authors.

Robert LynchUniversity of Turku, Turku, Finland. robertflynch@gmail.com.ORCID http://orcid.org/0000-0002-2477-6204
Virpi LummaaUniversity of Turku, Turku, Finland.
Michael BrigaUniversity of Turku, Turku, Finland.ORCID http://orcid.org/0000-0003-3160-0407
Simon N ChapmanUniversity of Turku, Turku, Finland.ORCID http://orcid.org/0000-0003-2342-3383
John LoehrUniversity of Helsinki, Helsinki, Finland.ORCID http://orcid.org/0000-0002-6212-0273

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Understanding how conditions experienced during development affect reproductive timing is of considerable cross-disciplinary interest. Life-history theory predicts that organisms will accelerate reproduction when future survival is unsure. In humans, this can be triggered by early exposure to mortality. Previous studies, however, have been inconclusive due to several confounds that are also likely to affect reproduction. Here we take advantage of a natural experiment in which a population is temporarily divided by war to analyze how exposure to mortality affects reproduction. Using records of Finnish women in World War II, we find that young girls serving in a paramilitary organization wait less time to reproduce, have shorter inter-birth intervals, and have more children than their non-serving peers or sisters. These results support the hypothesis that exposure to elevated mortality rates during development can result in accelerated reproductive schedules and adds to our understanding of how participation in warfare affects women.

Indexed as

War ExposureAdolescentAdultAdult Survivors of Child Adverse EventsAge FactorsChildFemaleFinlandHumansMilitary PersonnelMortalityReproductive BehaviorSiblingsSocioeconomic FactorsStress, PsychologicalTime Factors

Identifiers

PMID32398652
PMCPMC7217904

What OpenQuestion holds

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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.