At the conclusion of therapy in Dr. Liddle's trial, CBT and MDFT seemed similarly effective. Youths in the CBT group reported that they had used cannabis 10 times, on average, in the month before they started treatment; those in the MDFT group reported 12 days of such usage. By the last month of treatment, both groups' use of cannabis had dropped, to 7.5 days and 6 days, respectively. A similar pattern held for use of any drugs or alcohol. At intake, 94 percent of the CBT group and 92 percent of the MDFT youths reported using drugs or alcohol more than once in the previous month; these percentages had dropped to 77 and 73 percent, respectively, at discharge.