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Table 2 Demographic characteristics of respondents in three studies of Toronto marijuana users

From: Whither RDS? An investigation of Respondent Driven Sampling as a method of recruiting mainstream marijuana users

  MRDS respondents (N = 36) RDD respondents (N = 51) Self-selected respondents (N = 75)
mean age 31.3 yrs. (SD 7.4) 34.4 yrs. (SD 12.6) 32.4 yrs. (SD 8.9)
% male 58 80 63
% married or common law 44 31 16
% born in Canada 83 76 76
% white/European background 89 74 NA
% completed university or college 70 39 NA
% working full-time 56 76 41
% working part-time 11 10 27
% Currently in school 33 16 17
% >$50,000 household income 50* 54** NA***
  1. *average annual household income
  2. **2003 household income before taxes
  3. ***2000-01 personal monthly take-home income