Similar limitations occurred in a Swiss study of an 8-module internet-based program encompassing CBT and MI called Snow Control for individuals reporting cocaine use at least 3 times in the past 30 days (Schaub, Sullivan, Haug, & Stark, 2012). Participants were randomly assigned to the Snow Control program or an 8-session online psychoeducation control. Treatment engagement was very low, with only 18/96 (19%) allocated to the Snow Control program accessing a module and only 8 of the 100 allocated to control. Outcome data did not indicate significant differences in cocaine use outcomes by group.
