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báo cáo khoa học: " Whither RDS? An investigation of Respondent Driven Sampling as a method of recruiting mainstream marijuana users"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Whither RDS? An investigation of Respondent Driven Sampling as a method of recruiting mainstream marijuana users | Hathaway et al. Harm Reduction Journal 2010 7 15 http www.harmreductionjournal.eom content 7 1 15 HARM REDUCTION JOURNAL RESEARCH Open Access Whither RDS An investigation of Respondent Driven Sampling as a method of recruiting mainstream marijuana users Andrew D Hathaway 1 Elaine Hyshka2 Patricia G Erickson3 Mark Asbridge4 Serge Brochu5 Marie-Marthe Cousineau5 Cameron Duff6 and David Marsh7 Abstract Background An important challenge in conducting social research of specific relevance to harm reduction programs is locating hidden populations of consumers of substances like cannabis who typically report few adverse or unwanted consequences of their use. Much of the deviant pathologized perception of drug users is historically derived from and empirically supported by a research emphasis on gaining ready access to users in drug treatment or in prison populations with higher incidence of problems of dependence and misuse. Because they are less visible responsible recreational users of illicit drugs have been more difficult to study. Methods This article investigates Respondent Driven Sampling RDS as a method of recruiting experienced marijuana users representative of users in the general population. Based on sampling conducted in a multi-city study Halifax Montreal Toronto and Vancouver and compared to samples gathered using other research methods we assess the strengths and weaknesses of RDS recruitment as a means of gaining access to illicit substance users who experience few harmful consequences of their use. Demographic characteristics of the sample in Toronto are compared with those of users in a recent household survey and a pilot study of Toronto where the latter utilized nonrandom self-selection of respondents. Results A modified approach to RDS was necessary to attain the target sample size in all four cities i.e. 40 users from each site . The final sample in Toronto was largely similar however to marijuana users in a random household survey that was carried .