Social network influences on adolescent substance use: Exposure, perceptions, and ethnicity

Thomas W. Valente, Kristina Miljkovic, Jessica Barrington-Trimis and Sarah E. Piombo

Social Science & Medicine, 2025, vol. 381, issue C

Abstract: Adolescent social networks have been shown to be associated with use of tobacco, marijuana, and alcohol. This study seeks to replicate these associations with new data and compare perceived friend use with friend self-report as well as explore racial differences. Data were collected from up to 14 demographically diverse schools in Southern California and consisted of 23,012 surveys collected bi-annually from 9th to 12th grade with analyses conducted cross-sectionally. Regression models included fixed effects for school, and random effects for students.

Date: 2025
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DOI: 10.1016/j.socscimed.2025.118290

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