Blinding
BLIND
We aimed to keep assessors blind to the intervention allocation of adolescents throughout the trial, while investigators, implementation staff, and participants were not blind. All staff were trained and supervised in the importance of maintaining blinding. Prior to conducting each T1 and T2 assessment, participants were instructed not to reveal their allocation to the assessor. In the case that the allocation was revealed, assessors were instructed to inform the research coordinator immediately and another assessor would be assigned to complete the assessment. At the end of each T1 and T2 assessment, assessors provided a guess as to which treatment the participant received, including any potential reasons for this guess.