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Int J Behav Med. 2017 Feb;24(1):144-152. doi: 10.1007/s12529-016-9595-2.

Marijuana Use and Dependence in Chilean Adolescents and Its Association with Family and Peer Marijuana Use.

Author information

1
University Medical Center Groningen, Health Psychology Section, University of Groningen, FA12, P.O. Box 196, 9700 AD, Groningen, The Netherlands. m.e.lobato.concha@umcg.nl.
2
University Medical Center Groningen, Health Psychology Section, University of Groningen, FA12, P.O. Box 196, 9700 AD, Groningen, The Netherlands.
3
Department of Health Psychology, Health & Technology, University of Twente, Enschede, The Netherlands.
4
Research Department, National Service for Prevention and Rehabilitation of Drug and Alcohol Use (SENDA), Agustinas 1235, 6th floor, Santiago, Chile.

Abstract

PURPOSE:

The purpose of the study is to examine (1) whether family and peer marijuana use are independently related to adolescent marijuana use in Chile, (2) whether family and peer marijuana use are associated with adolescent marijuana dependence in adolescents using marijuana, and (3) whether the adolescent's age moderates the association between family or peer use and adolescent marijuana use and/or dependence.

METHOD:

This study used data from the National Survey on Drug Use in the General Population in Chile (a cross-sectional observational study), which was conducted in 2008 and 2010 in 4413 adolescents aged 12-19. Adolescents answered questions about their past-year marijuana use and dependence (ICD-10 criteria) and the marijuana use of their family and peers. Logistic regressions were performed while controlling for confounders.

RESULTS:

Adolescents who had a family member who used marijuana were five times more likely to use the drug. Adolescents with a close friend who used marijuana were eight times more likely to use marijuana. When adolescents were using marijuana, they were three times more likely to be dependent if they had a family member who used the drug. However, no significant relationship was found between peer use and dependence. No statistically significant interactions were found between family or peer use and age.

CONCLUSION:

Family and peer marijuana use was independently associated with adolescent's past-year marijuana use; however, only family marijuana use was statistically associated with adolescent's marijuana dependence.

KEYWORDS:

Adolescents; Cross-sectional; Family; Marijuana; Peers; Substance-related disorders

PMID:
27699626
PMCID:
PMC5288413
DOI:
10.1007/s12529-016-9595-2
[Indexed for MEDLINE]
Free PMC Article

Conflict of interest statement

Compliance with Ethical Standards Funding This study was conducted in the context of the doctoral studies of the first author, who is supported by a scholarship from the Chilean government. However, the sponsor played no role in any part of this study. No other funding was involved in this research. Conflict of Interest The authors declare that they have no conflict of interest. Human Subject Statement All the authors declare that they conformed to the Declaration of Helsinki concerning human rights and informed consent and that they followed the correct procedures concerning the treatment of humans in research. We used data from the National Survey on Drug Use in the General Population, which was conducted by the Chilean government and is publicly available de-identified secondary data, following the national procedures to use these databases. Informed consent was verbally obtained from all individual participants included in the study.

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