Dosage/Attendance
Participants attended on average 6.43 or 80.4% of peer group lessons and 82.9% completed the 9th parent-youth lesson. Dosage varied across cohorts with cohort 1 having the lowest peer group attendance (5.96 in cohort 1 vs. 6.94 in cohort 2 and 6.13 in cohort 3) and the highest percentage of youth completing the parent-youth lesson (96.3% in cohort 1 vs. 74.8% in cohort 2 and 78.9% in cohort 3). There were also significant differences in time between the last peer group lesson and the 9th parent-youth lesson with cohort 1 having an average time between these lessons almost 3 times that of cohorts 2 and 3 (see Table 