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Objective. To evaluate the use of the illicit drugs and its interaction with smoking in young students in a state of Central Mexico, 2005-2007. Material and Methods. A population cohort study with 4 625 students was carried out in differ ent public schools in Morelos State. Baseline measurement analysis was carried out describing tobacco, alcohol and illegal drugs consumption. Drug abuse according to tobacco onsumption was assessed through logistic regression mod els, stratified by smoking habit. Results. Mean age was 13.8 (SD 2.03); 51.9% were female students and 11.9% of total population informed having smoked (13.5% men and 10.4% women). Illicit drug use was 3.3%; 3.7% in men and 2.8% in women and its distribution according tobacco smoking was 2.0% for non smokers and 12.4% for those who had smoked. In non smokers group, parent’s drug use was 4.5 times (CI95% 1.9-11.0) higher compared to those students whose parents do not do drug use. The effect was not significant in smokers group. Alcohol intake was associated to drug abuse in smokers group (OR=2.5; CI95% 1.2-5.9). Conclusions. The control and prevention of tobacco consumption and other addictive sub stances should be carried out since in a comprehensive way, because contextual antecedent these behaviors are related.

Prevalencia del uso de drogas ilegales en función del consumo de tabaco en una muestra de estudiantes en México