Sterling S, et al. - This study was performed to investigate initiation and engagement with addiction and/or psychiatry treatment among adolescents referred to treatment from a trial comparing 2 different modalities of delivering Screening, Brief Intervention and Referral to Treatment (SBIRT) to Usual Care in pediatric primary care. The findings from the present study suggested that embedded behavioral health clinicians (BHCs) can have a significant positive effect on facilitating treatment initiation for pediatric primary care adolescents referred to addiction and/or psychiatry services.