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Respondent Driven Sampling (RDS)

Respondent Driven Sampling (RDS). Keith Chan BC CfE. RDS of drug users in Recife, Brazil. IDU. DU. www.respondentdrivensampling.org Douglas Heckathorn, Cornell. Obstacles. Hard to reach populations Lack of sampling frame Convenience sample Biased estimates Not generalizable. RDS hopes.

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Rds worldwide - PowerPoint PPT Presentation

Respondent Driven Sampling (RDS)