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vol.22 issue4The contribution of two Brazilian multi-center studies to the assessment of HIV and HCV infection and prevention strategies among injecting drug users: the AjUDE-Brasil I and II ProjectsCharacteristics of male and female injecting drug users of the AjUDE-Brasil II Project author indexsubject indexarticles search
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On-line version ISSN 1678-4464Print version ISSN 0102-311X


MINGOTI, Sueli Aparecida; CAIAFFA, Waleska Teixeira  and  PROJETO AJUDE-BRASIL II. A capture-recapture technique to estimate the size of the injecting drug user population attending syringe exchange programs: AjUDE-Brasil II Project. Cad. Saúde Pública [online]. 2006, vol.22, n.4, pp.783-789. ISSN 1678-4464.

This paper presents the results of a study with a two-occasion capture-recapture design. The data are part of the AjUDE-Brasil II Project, carried out in 2000-2001. Estimation of the size of the IDU population attending a syringe-exchange program (SEP) in São José do Rio Preto, Salvador, and Porto Alegre, Brazil, was performed using Chao's model. Capture probabilities were also estimated. For Porto Alegre a comparison of the results from the AjUDE-Brasil I and AjUDE-Brasil II Projects was performed. Results are also presented for error rates secondary to the choice of matching criteria.

Keywords : Harm Reduction; Intravenous Susbtance Abuse; Street Drugs; Syringe-Exchange Programs.

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