Examining the Efficacy of a Digital Therapeutic to Prevent Suicidal Behaviors

Plain-language summary

The primary aim of the project is to test the efficacy of BCBT delivered via a digital platform (i.e., smartphone) to Servicemembers with recent suicidal ideation and/or suicide attempts presenting to primary care clinics. Given existing challenges of scaling empirically-supported treatments/interventions for suicidality with fidelity, this project could lead to markedly expanded access to BCBT, along with improving our understanding about what intervention strategies are most effective and how they can be delivered with meaningful fidelity. Aviva, the digital version of BCBT, was developed for use with patients across the full spectrum of healthcare settings, including primary care. Aviva is not an emergency alert system, rather a digital platform for delivery of the full scope of BCBT treatment components. An open-label single group Phase I clinical trial has demonstrated the safety, tolerability, feasibility, fidelity, and potential efficacy of Aviva, with participants completing modules over 8 weeks, and follow-up assessments at weeks 1, 4, and 8. Subsequent refinements included the addition of technical features that would allow patients to revisit and/or repeat previously completed modules, along with integration of more characters for delivering video vignettes and greater opportunities for skills practice and treatment engagement. These modifications have further enhanced Aviva safety, tolerability, and fidelity, consistent with the original BCBT protocol. Not only is it hypothesized that Aviva will result in significantly larger reductions in severity of suicidal ideation than participants randomized to the control condition, but also that greater app engagement will be negatively correlated with severity of suicidal thinking. Moderators and mediators (i.e. suicidal beliefs, wish to live, impulsive decision-making) of intervention effects will also be examined. The study will be conducted at the primary care clinics at Fort Carson, with a goal of enrolling 720 patients across a two-year timeframe. Participants will be identified using each clinic's existing suicide risk assessment methods, including the PHQ-9 suicide risk item and a score of 1 or higher on the CSSRS Screener (Recent). Participants will be randomly assigned to one of two treatment conditions, Aviva or control (i.e., development of a safety plan consistent with local procedures and policies, along with referral for standard mental health care and suicide risk management in accordance with local policies and procedures). In an effort to address potential performance bias specific to smartphone use, participants in the control condition will download the Suicide Safety Plan app to their smartphones. Those in the Aviva condition will also complete weekly check-ins with Project 2 research clinicians to review treatment adherence, identify and respond to any logistical/operational problems, and respond to any unexpected emergencies and/or participant safety concerns. Participants will have up to five data points: baseline, 3, 6, 9, and 12 months. All data available from all participants and all time points will be included in the analyses, consistent with the intent-to-treat principle. Across our two previous clinical trials and our in-progress RCT, attrition during the first 12 months postbaseline was \<30% and we anticipate similar rates in this trial.

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