Abstract
SUMMARY Monitoring behaviors and serostatus of drug addicts requires the recruitment and assessment of successive samples of the not-in-treatment population. Sampling of street addicts presents a number of difficult methodological problems. This paper describes the strategies used to implement random sampling strategies in the recruitment of out-of-treatment crack and injection drag users in the San Juan Metropolitan Area. A three-stage sampling procedure was designed. This procedure generates independent monthly samples of the population of interest. The advantages and constraints involved in the methodology are discussed.
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