title: Prevalence of cannabis use in Brazil: data from the I Brazilian National Alcohol Survey (BNAS).
abstract: OBJECTIVE
  To estimate the prevalence of cannabis use in the last 12 months in the Brazilian population and to examine its association with individual and geographic characteristics.
  
  
  METHODS
  Cross-sectional survey with a national probabilistic sample.
  
  
  METHODS
  3006 individuals aged 14 to 65 years.
  
  
  METHODS
  Questionnaire based on well established instruments, adapted to the Brazilian population.
  
  
  RESULTS
  The 12-month prevalence of cannabis use was 2.1% (95%CI 1.3-2.9). Male gender, better educational level, unemployment and living in the regions South and Southeast were independently associated with higher 12-month prevalence of cannabis use.
  
  
  CONCLUSIONS
  While the prevalence of cannabis use in Brazil is lower than in many countries, the profile of those who are more likely to have used it is similar. Educational and prevention policies should be focused on specific population groups.
authors.affiliation: Department of Preventive Medicine, Faculty of Medicine- University of São Paulo, Brazil. fla.de@uol.com.br
authors.forename: Flávia S
authors.initials: FS
authors.lastname: Jungerman
authors.forename: Paulo Rossi
authors.initials: PR
authors.lastname: Menezes
authors.forename: Ilana
authors.initials: I
authors.lastname: Pinsky
authors.forename: Marcos
authors.initials: M
authors.lastname: Zaleski
authors.forename: Raul
authors.initials: R
authors.lastname: Caetano
authors.forename: Ronaldo
authors.initials: R
authors.lastname: Laranjeira
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D002189:Marijuana Abuse / Q000453:epidemiology*; D008875:Middle Aged; D015995:Prevalence; D012111:Residence Characteristics; D012959:Socioeconomic Factors; D055815:Young Adult