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<p>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.</p>

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

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月3日

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  • Holly Crudgington,
  • Rachel Blakey,
  • Molly Copeland,
  • Charlotte Gayer-Anderson,
  • Samantha Davis,
  • Katie Lowis,
  • Esther Putzgruber,
  • Thai-sha Richards,
  • Jonas Kitisu,
  • Adna Hashi,
  • Karima Shyan Clement-Gbede,
  • Niiokani Tettey,
  • Daniel Stanyon,
  • Alice Turner,
  • Lynsey Dorn,
  • Seeromanie Harding,
  • Kamaldeep Bhui,
  • Vanessa Pinfold,
  • Gemma Knowles,
  • Craig Morgan

摘要

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.