“…Eighty percent of baseline participants used methamphetamine at least weekly during the previous month and 60% were classified as methamphetamine-dependent according to the SDS. Overall, the socio-demographic characteristics of this cohort are comparable to those of other methamphetamine-and amphetamine-type stimulant-using samples recruited for both crosssectional and longitudinal research throughout Australia since the mid-1990s (e.g., Cogger, McKetin, Ross, & Najman, 2008;McKetin, Kelly, & McLaren, 2006;Vincent et al, 1999;Wallace, Galloway, McKetin, Kelly, & Leary, 2009). …”