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Table 3 Weighted prevalence estimates drinking, cannabis use and smoking by sample type

From: Surveying alcohol and other drug use through telephone sampling: a comparison of landline and mobile phone samples

  Mobile sample Landline sample Dual-frame sample
  Prevalence 95% CI Prevalence 95% CI Prevalence 95% CI
Risky drinking 55% (52% - 59%) 51% (47% - 55%) 52% (49% - 54%)
Very risky drinking 28% (25% - 32%) 24% (20% - 28%) 26% (24% - 28%)
Lifetime cannabis use 40% (37% - 44%) 35% (31% - 40%) 37% (35% - 40%)
Recent cannabis use 10% (8% - 12%) 8% (4% - 11%) 9% (7% - 10%)
Current smoking 24% (21% - 28%)* 16% (13% - 19%) 21% (19% - 23%)*
  1. * Significantly different from landline sample prevalence estimate.