Evidence map›Paper›PMID 41042462›Full record

ArticleJournal of youth and adolescence2026

Peer-friendship Networks and Self-harm among Adolescents from Inner-city Schools: A Social Network Study.

Holly Crudgington, Rachel Blakey, Molly Copeland, Charlotte Gayer-Anderson, Samantha Davis, Katie Lowis, Esther Putzgruber, Thai-Sha Richards, Jonas Kitisu, Adna Hashi and 10 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of youth and adolescence, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

20 authors.

Holly CrudgingtonESRC Centre for Society and Mental Health, King's College London, London, UK.ORCID http://orcid.org/0000-0003-1048-4953
Rachel BlakeyHealth Service and Population Research Department, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
Molly CopelandDepartment of Sociology, University of Notre Dame, Notre Dame, IN, USA.
Charlotte Gayer-AndersonESRC Centre for Society and Mental Health, King's College London, London, UK.
Samantha DavisESRC Centre for Society and Mental Health, King's College London, London, UK.
Katie LowisESRC Centre for Society and Mental Health, King's College London, London, UK.
Esther PutzgruberESRC Centre for Society and Mental Health, King's College London, London, UK.
Thai-Sha RichardsESRC Centre for Society and Mental Health, King's College London, London, UK.
Jonas KitisuESRC Centre for Society and Mental Health, King's College London, London, UK.
Adna HashiESRC Centre for Society and Mental Health, King's College London, London, UK.
Karima Shyan Clement-GbedeESRC Centre for Society and Mental Health, King's College London, London, UK.
Niiokani TetteyESRC Centre for Society and Mental Health, King's College London, London, UK.
Daniel StanyonHealth Service and Population Research Department, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
Alice TurnerHealth Service and Population Research Department, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
Lynsey DornHealth Service and Population Research Department, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
Seeromanie HardingDepartment of Population Health Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences & Medicine, King's College London, London, UK.
Kamaldeep BhuiDepartment of Psychiatry, University of Oxford, Oxford, UK.
Vanessa PinfoldMcPin Foundation, London, UK.
Gemma KnowlesESRC Centre for Society and Mental Health, King's College London, London, UK.
Craig MorganESRC Centre for Society and Mental Health, King's College London, London, UK. craig.morgan@kcl.ac.uk.

Funding

Economic and Social Research Council ES/S012567/1H2020 European Research Council REACH 648837
6 · The paper itself

Abstract

Peer-relationships are critically important for adolescent behavior, but how peer-friendship network composition and structure influence adolescent self-harm is less clear. The aim of this cross-sectional study was to explore the association between in-school peer-friendship networks, gender, and self-harm among inner-city adolescents. Participants were 2203 adolescents (mean age = 12.5 years, SD = 1.0; 53% girls) attending inner-city south London schools. Each adolescent nominated friends within their school year to construct sociometric peer-friendship networks and reported on lifetime self-harm. Mixed-effects logistic regression was used to estimate the effects of a comprehensive array of peer-network metrics on self-harm in the sample overall and by gender. Having friends who report self-harm, network over-integration (bridging, popularity), and social isolation (network under-integration) increased odds of self-harm, while sociality and high friendship group density reduced odds. Odds ratios did not vary by gender. The findings indicate that peer-network composition, particularly if friends self-harm, and over- and under-integration in wider peer-networks, may influence early adolescent self-harm, among both boys and girls.

Indexed as

Adolescent BehaviorFriendsPeer GroupSelf-Injurious BehaviorAdolescentChildCross-Sectional StudiesFemaleHumansInterpersonal RelationsLondonMaleSchoolsSocial GroupSocial SupportUrban PopulationAdolescencePeersSelf-harmSocial networks

Identifiers

PMID41042462
PMCPMC12815966

What OpenQuestion holds

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LicenceCC BY
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.