Randomisation
SECONDARY, BLIND
After the first phase of baseline data collection, schools were stratified into individual assignments of intervention or control groups. From nine secondary schools (clusters) in the Gedeo Zone, six schools (clusters) were randomly selected for the study, which resulted in three intervention and three control groups.The study arm associated with each randomly assigned number was written down prior to randomisation and placed in an envelope until all enrolled participants completed all baseline assessments and assigned interventions. Simple randomisation with a 1:1 allocation ratio was performed. The person responsible for randomisation notified the study arm for the intervention or control arm for the research team. Allocation concealment was not performed for study participants because the intervention was a training program, and it was impossible to blind schools or trainers to their study arm. The personnel responsible for subsequent data collection were blinded to group assignments. There was no change to the method after the trial began. Therefore, the study considered the consolidated standards of reporting trials (CONSORT) as a guide for study randomisation (Consort flow diagram: Effectiveness of peer led education interventions in generating contraceptive utilization and demand among adolescents in Gedeo Zone, South Ethiopia.