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AimsTo examine the efficacy of a brief intervention delivered by a therapist (TBI) or a computer (CBI) in preventing cannabis use among adolescents in urban primary care clinics.
DesignA randomized controlled trial comparing: CBI and TBI versus control.
SettingUrban primary care clinics in the United States.
ParticipantsResearch staff recruited 714 adolescents (aged 12–18 years) who reported no...
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