"Unplugged": A school-based randomized control trial to prevent and reduce adolescent substance use in the Czech Republic

Roman Gabrhelik, Alexandra Duncan, Michal Miovsky, C. Debra M Furr-Holden, Lenka Stastna, Lucie Jurystova

Research output: Contribution to journalArticle

Abstract

Background: The Czech Unplugged Study, inspired by the European Drug Addiction Prevention Trial, is a prospective, school-based, randomized controlled prevention trial designed to reduce the risk of alcohol, tobacco, inhalant, and illegal drug use in 6th graders in the Czech Republic. The intervention uses the comprehensive social influence model to affect alcohol and drug using norms among primary school students. Methods: Descriptive statistics and chi-square analyses were used to assess differences between the experimental and control groups on demographic characteristics and study outcomes. Multilevel techniques were used to take the hierarchical structure of the data into account. Prevalence odds ratios using the Bonferroni correction were calculated to assess the differences between the experimental (n=914) and control (n=839) groups on each outcome 1, 3, 12, 15, and 24 months after the end of the intervention. Results: Multilevel analysis using the Bonferroni correction showed statistically significant intervention effects at the final follow-up for any smoking (OR = 0.75, 99.2% CI 0.65-0.87), daily smoking (OR = 0.62, 99.2% CI 0.48-0.79), heavy smoking (OR = 0.48, 99.2% CI 0.28-0.81), any cannabis use (OR = 0.57 99.2% CI 0.42-0.77), frequent cannabis use (OR = 0.57, 99.2% CI 0.36-0.89), and any drug use (OR = 0.78, 99.2% CI 0.65-0.94). Conclusions: This study adds new evidence on the effectiveness of the Unplugged school-based prevention program for primary school students in the Czech Republic.

Original languageEnglish (US)
Pages (from-to)79-87
Number of pages9
JournalDrug and Alcohol Dependence
Volume124
Issue number1-2
DOIs
StatePublished - Jul 1 2012

Keywords

  • Adolescent risk behaviors
  • Drug use
  • Prevention
  • Randomized controlled trial

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Toxicology
  • Pharmacology
  • Pharmacology (medical)

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