Adolescent suicide is the 2nd leading cause of death in this age group. There are no validated treatments to decrease the risk of adolescent suicidal behavior, and there are especially no interventions to target the highest risk period for adolescent suicide and suicidal behavior, namely during the time of transition from inpatient to outpatient care. This purpose of this project was to develop a novel, brief intervention that can be delivered on an inpatient unit prior to the transition to outpatient care, and augment known factors to protect adolescents from suicidal behavior, and extend the impact of treatment by liaison with the outpatient therapist and the development of a personalized safety plan phone application. This treatment, ASAP, focuses on augmenting adherence to the components of ASAP and outpatient aftercare, development of a personalized Safety Plan, and Affect Protection, through helping the teen and family promote a positive mood, tolerate distress, engage in healthy emotion regulation and access social support.

This 2-site R34 project developed a brief, flexible, manualized intervention with supporting phone app with the purpose of reducing the risk of suicidal behavior in adolescents with high suicidal ideation or a recent suicide attempt, during the transition from inpatient to outpatient care. This transition period is the highest risk period for attempted and completed suicide. Suicide is the 2nd leading cause of adolescent mortality, and there are currently no established interventions for suicidal teens. By developing a treatment that can be delivered on an inpatient unit prior to the transition to outpatient treatment, we anticipated being able to lower suicidal risk and increase the likelihood that participants will attend subsequent outpatient treatment. In keeping with the priorities of NIMH, this intervention aimed at reducing the risk of suicide and suicidal behavior was trans-diagnostic. We term the intervention ASAP, with anticipated components: (1) Adherence-promoting engagement and adherence to treatment through motivational interviewing; (2) Safety planning; and (3) Affect Protection- selecting from a menu of techniques for maintaining positive affect (e.g. savoring and switching strategies, mobilizing social support, engaging in emotion regulation and distress tolerance skills). Each of these components was delivered within a Motivational Interviewing framework for enhancing intrinsic motivation for change. Treatment was brief (3-5 hours), and flexibly delivered on inpatient units prior to initiation of outpatient treatment.

ASAP included the family in the treatment, and a safety plan phone app to extend the impact of treatment was also developed. Innovative features included: (1) delivery of an intervention at a time and place when suicidal risk is highest; (2) augmentation of protective factors against recurrent suicidal behavior, specifically by promoting development of positive affect, emotion regulation, distress tolerance, and social support; (3) a Safety plan phone app to extend the impact of treatment; and (4) liaison with the outpatient therapist to ensure continuity of care.

This project conducted an RCT of ASAP followed by Aftercare (AC) vs. AC alone to determine ASAP's feasibility, acceptability, impact on proximal targets (e.g., adherence to outpatient care, sleep, positive affect, substance use), suicidal ideation and behavior. In total 68 suicidal adolescents were enrolled, 2 of whom were withdrawn following baseline assessment and were excluded from analyses, resulting in the final study sample size of 66. ASAP, developed with and intended for community clinicians, has the potential to be a sustainable intervention to reduce the burden of adolescent suicidality. Data analyses have been completed and results are being finalized.

Inclusion Criteria:

• Child participants will be adolescents (aged 12-17.11 years) admitted to an inpatient unit for a recent suicide attempt or significant suicidal ideation with a plan or intent. We define a suicide attempt, as per the Columbia Clinical Algorithm for Suicide Assessment (C-CASA), as "self-destructive behavior with inferred or stated intent to die."
• Participants must be English-speaking.
• Participants can have unipolar or bipolar disorder, conduct or oppositional disorder, eating disorder, or alcohol or substance use or abuse or dependence.

Exclusion Criteria:

• Child participants to be excluded will be those with current psychosis, mania, <90% of ideal body weight, or IQ<70 (based on the age-appropriate Wechsler Intelligence Scale if concerns about intellectual capabilities are evident at assessment), as these conditions may require more intensive interventions or limit comprehension of the intervention components.