Affiliation:
1. Universidade Federal de São Paulo, Brasil
Abstract
Epidemiological studies of drug misusers have until recently relied on two main forms of sampling: probability and convenience. The former has been used when the aim was simply to estimate the prevalence of the condition and the latter when in depth studies of the characteristics, profiles and behaviour of drug users were required, but each method has its limitations. Probability samples become impracticable when the prevalence of the condition is very low, less than 0.5% for example, or when the condition being studied is a clandestine activity such as illicit drug use. When stratified random samples are used, it may be difficult to obtain a truly representative sample, depending on the quality of the information used to develop the stratification strategy. The main limitation of studies using convenience samples is that the results cannot be generalised to the whole population of drug users due to selection bias and a lack of information concerning the sampling frame. New methods have been developed which aim to overcome some of these difficulties, for example, social network analysis, snowball sampling, capture-recapture techniques, privileged access interviewer method and contact tracing. All these methods have been applied to the study of drug misuse. The various methods are described and examples of their use given, drawn from both the Brazilian and international drug misuse literature.
Subject
Public Health, Environmental and Occupational Health
Reference52 articles.
1. Estudo multicêntrico de morbidade psiquiátrica em áreas urbanas brasileiras: Brasília, São Paulo, Porto Alegre;Almeida Filho N;Rev ABP APAL,1992
2. Abuso de drogas entre meninos e meninas de rua do Brasil;Armando R,1990
3. Research Report of the Cocaine Steering Group;Avico U,1988
4. Surto de malária induzida entre usuários de drogas injetáveis;Barata LCB;Rev Saúde Pública,1993
5. Perfil de usuários de drogas. I Estudo de características de pacientes do NEPAD/UERJ 1989/1987.;Bastos FIM;Rev ABP APAL,1988
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