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P1-385 Risk factors associated with last-month illegal drug polyconsumption in a population of drug users
  1. F Alonso1,
  2. M L Garmendia1,
  3. M E Alvarado2,
  4. G Acuña3
  1. 1Universidad de Chile, Faculty of Medicina, School of Public Health, Santiago, Chile
  2. 2Goverment of Chile, Conace, Santiago, Chile
  3. 3Centro Nevería, Santiago, Chile


Introduction Drug polyconsumption is a negative predictor for treatment success and is related to increased risk-behaviour. However, little is known about risk factors associated to polyconsumption.

Objective To identify risk factors associated to last month illegal drugs polyconsumption (two or more drugs) in a Chilean population of adult drug users.

Methods In 2008 we administered a previously validated 6th version of the Addiction Severity Index to 436 adult drug users, recently admitted to rehabilitation programs, without serious psychiatric disorders and who signed an informed consent (age 32.5+9.3 years. 71.8% male). This semi-structured questionnaire includes information about: medical history, social support, employment, legal problems, drug use and psychiatry disorders. Last 30 days consumption was considered to calculate the number of drugs consumed by individuals entering a rehabilitation program. Multivariate logistic regression was used to identify risk factors.

Results Mean age at drug use initiation was 16+5.4 y. Total number of drugs consumed ranged from 0 to 4 (theorical maximum 9). 30 days prevalence of polyconsumption was 30.5%. Cocaine, marihuana and sedatives were the most common illegal drugs used (53.7, 52.2 and 19.1% each). Age was negatively associated with polyconsumption, adjusted OR=0.94 (0.90–0.98) and history of physically abused and friend with drug problems were identified as risk factors, 2.12 (1.15–3.9) and 2.38 (1.29–4.42), respectively. Neither education, marital and employment status, sexual abuse history, legal or medical problems, drug user partner or relative, nor depression were associated.

Conclusion Polyconsumption risk factors must be addressed to potentially improve the outcome of rehabilitation programs.

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  • Funding CONACE, Chilean Goverment.

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