Early tobacco and alcohol consumption as modifying risk factors on marijuana use Consumo precoz de tabaco y alcohol como factores modificadores del riesgo de uso de marihuana

Iglesias Alamos V.; Cavada, G; Silva C.; Caceres D.

Keywords: behavior, age, chile, epidemiology, smoking, onset, alcohol, abuse, humans, human, male, female, drinking, article, child, adolescent, addiction, marijuana, cannabis, studies, of, Epidemiologic

Abstract

Objective: To assess the relationship between early tobacco and alcohol use and the risk of marijuana consumption among schoolchildren. Methods: A cross-sectional study comprising data from the Fourth National Study on Drug Use in the Chilean School Population (2001). There were studied 54,001 schoolchildren aged between eight and 20 years. Predictors were self-reported tobacco and alcohol use (ever users), age at initiation of tobacco and/or alcohol use, and intensity of tobacco use. The study outcome was self-reported marijuana use (ever users versus never users) and age at initiation of marijuana use. Poisson regression and Weibull regression were used for data analysis. Results: Lifetime prevalence of tobacco use was high: 77%, alcohol 79%, and marijuana 23%. Tobacco consumption increased the likelihood of marijuana use (PR=10.4; 95% CI: 8.9;12.2). Later initiation of tobacco (HR=0.85; 95% CI: 0.84;0.86) and alcohol (HR-0.90; 95% CI: 0.89;0.91) decreased the risk of marijuana use. Marijuana use was higher in heavy smokers compared to light smokers (PR=3.11; 95% CI: 2.96;3.26 versus PR=1.70; 95% CI: 1.58;1.83). Conclusions: Tobacco use is strongly associated with marijuana use, which is significantly associated with the age at initiation of tobacco use, intensity of tobacco use and concurrent use of alcohol. Prevention strategies should target prevention of adolescent early tobacco use.

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Título según SCOPUS: Early tobacco and alcohol consumption as modifying risk factors on marijuana use Consumo precoz de tabaco y alcohol como factores modificadores del riesgo de uso de marihuana
Título de la Revista: REVISTA DE SAUDE PUBLICA
Volumen: 41
Número: 4
Editorial: REVISTA DE SAUDE PUBLICA
Fecha de publicación: 2007
Página de inicio: 517
Página final: 522
Idioma: eng
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-34548155208&partnerID=q2rCbXpz
Notas: SCOPUS