title: [Suicide attempts and self inflicted harm: a one year follow up of risk behaviors among out of treatment cocaine users].
abstract: BACKGROUND
  Cocaine users tend to have a higher frequency of risk behaviors.
  
  
  OBJECTIVE
  To compare risk behaviors of out -of -treatment Cocaine Base Paste (CBP) and Cocaine Hydrochloride (CH) users, by means of Privileged Access Interviewing in a one- year prospective study.
  
  
  METHODS
  Twenty -eight interviewers were trained to recruit and administer a questionnaire on substance use patterns and related risk behaviors. Intentioned sampling was carried out in four municipalities of Santiago, Chile. Subjects who used CBP (group 1) or CH (group 2) at least once in the last month, with primary current use of CBP (group 1) or CH (group 2), and without treatment for substance abuse in the last six months were interviewed. Generalized Estimating Equations (GEE) were employed to compare risk behaviors during follow -up.
  
  
  RESULTS
  Four hundred and two of 467 subjects (86.1%) were followed up for one year. CBP users (n = 204) reported greater frequency of self -inflicted injuries (Odds Ratio (OR): 1.97 [95% confidence intervals (CI): 1.07-3.66]) and suicide attempts (OR: 2.68 [95% CI: 1.19-6.01]) than CH users.
  
  
  CONCLUSIONS
  CBP users had a greater frequency of self -inflicted injuries and suicide attempts, both life threatening risk behaviors, than CH users. This profile shows the high vulnerability of CBP users and should encourage further research and design of outreach interventions, particularly focused on this group.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Santis
authors.forename: Carmen Gloria
authors.initials: CG
authors.lastname: Hidalgo
authors.forename: Viviana
authors.initials: V
authors.lastname: Hayden
authors.forename: Enzo
authors.initials: E
authors.lastname: Anselmo
authors.forename: Andrea
authors.initials: A
authors.lastname: Jaramillo
authors.forename: Oslando
authors.initials: O
authors.lastname: Padilla
authors.forename: Rafael
authors.initials: R
authors.lastname: Torres
mesh_terms: D000328:Adult; D000367:Age Factors; D016739:Behavior, Addictive / Q000150:complications / Q000453:epidemiology; D002677:Chile / Q000453:epidemiology; D019970:Cocaine-Related Disorders / Q000150:complications / Q000628:therapy*; D003617:Dangerous Behavior; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D012307:Risk Factors; D012309:Risk-Taking; D016728:Self-Injurious Behavior / Q000453:epidemiology*; D012737:Sex Factors; D012959:Socioeconomic Factors; D013406:Suicide, Attempted / Q000706:statistics & numerical data*; D016896:Treatment Outcome; D055815:Young Adult