A capture-recapture technique to estimate the size of the injecting drug user population attending syringe exchange programs: AjUDE-Brasil II Project.
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.
Mingoti
Sueli Aparecida
SA
Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. sueli@est.ufmg.br
Caiaffa
Waleska Teixeira
WT
D001938:Brazil / Q000453:epidemiology; D003627:Data Interpretation, Statistical; D006801:Humans; D015233:Models, Statistical; D009313:National Health Programs / Q000706:statistics & numerical data*; D018671:Needle-Exchange Programs / Q000706:statistics & numerical data*; D011159:Population Surveillance; D015819:Substance Abuse, Intravenous / Q000453:epidemiology*