[Experimentation and regular use of alcoholic beverages, cigarettes and other Psychoactive Substances (PAS) during adolescence].

Objective: To analyze the use of alcoholic beverages, cigarettes, other psychoactive substances - PAS , among adolescents of public schools of Feira de Santana, Bahia/Brazil.

Method: Cross sectional study with random samples, stratified in terms of conglomerate units (schools and students). The sample of the study totalled 1,409 adolescents between 14 and 19 years old from 10 public schools; 30% of the total of schools of the municipality with 500,000/inhabitants.