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March 22, 2026PLoS ONEOpen Access

Effects of a peer-led educational intervention based on the theory of planned behavior on alcohol use intention and behavior among secondary school students in Northeast Ethiopia

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Authors

YWYitbarek WasihunMNMorankar Sudhakar NarayanEGEshetu Girma

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Overview

Quasi-experimental study showed lower behavioral intention and alcohol use in secondary students, suggesting TPB is effective.

Key Points

  • To evaluate the effectiveness of a peer-led educational intervention based on the Theory of Planned Behavior on alcohol use among adolescents.
  • Quasi-experimental pretest-post test control study conducted in four public secondary schools in Northeast Ethiopia.
  • Total of 1,496 students aged 15-24 participated, allocated to intervention and control groups.
  • The intervention included four 60-minute peer-led sessions targeting TPB constructs and alcohol knowledge.
  • Outcomes assessed at baseline and three months post-intervention using self-administered questionnaires.
  • Intervention group showed significant increase in alcohol-related knowledge (β = 4.76).
  • Behavioral intention to drink was lower in intervention group (β = −1.03).
  • Reduced self-reported alcohol use in intervention students (adjusted OR = 0.58, p < 0.001).
  • Improvements observed in attitudes, subjective norms, and perceived behavioral control.

Cite This Study

Wasihun et al. (2026) studied this question.

synapsesocial.com/papers/69bf3924c7b3c90b18b435dehttps://doi.org/10.1371/journal.pone.0345099
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