Evidence map›Paper›PMID 37588404›Full record

ArticleEvolutionary human sciences2019

Why so many Agta boys? Explaining 'extreme' sex ratios in Philippine foragers.

Abigail E Page, Sarah Myers, Mark Dyble, Andrea Bamberg Migliano

Abstract read
In one paragraph

Article in Evolutionary human sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Demography of grandmothering: a case study in Agta foragers.Proceedings. Biological sciences · 2025
    Article
  2. Article
  3. Sedentarization and maternal childcare networks: role of risk, gender and demography.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Article
  4. Wealth, health and inequality in Agta foragers.Evolution, medicine, and public health · 2023
    Article
  5. Article
  6. Children are important too: juvenile playgroups and maternal childcare in a foraging population, the Agta.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021
    Article
  7. 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

4 authors.

Abigail E PageDepartment of Anthropology, University College London, London, UK.ORCID https://orcid.org/0000-0002-0973-1569
Sarah MyersDepartment of Anthropology, University College London, London, UK.
Mark DybleJesus College, University of Cambridge, Cambridge, UK.
Andrea Bamberg MiglianoDepartment of Anthropology, University College London, London, UK.

Funding

Medical Research Council MR/P014216/1
6 · The paper itself

Abstract

Male-biased sex ratios have been observed in multiple small-scale societies. Although intentional and systematic female-biased mortality has been posited as an explanation, there is often a lack of ethnographic evidence of systematic female neglect and/or infanticide. The Agta, a foraging population from the Philippines, have a skewed sex ratio of 1.29 (129 males per 100 females) aged 15 years or under. We hypothesised that this skew was

Indexed as

AgtaBiased sex ratiosfemale-biased infanticide/neglecthunter–gatherersmale-biased mortality

Identifiers

PMID37588404
PMCPMC10427305

What OpenQuestion holds

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LicenceCC BY
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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.