Trajectories of Treatment Response and Nonresponse in Youth at High Risk for Suicide.

objectiveTo examine trajectories of treatment response in suicidal youth who participated in a randomized controlled trial comparing dialectical behavior therapy (DBT) and individual and group supportive therapy.

methodUsing latent class analysis across both treatment conditions, secondary analyses were conducted of data from a multisite randomized controlled trial comprising 173 youths ages 12-18 with repetitive self-harm (SH) (including ≥1 lifetime suicide attempts) and elevated suicidal ideation (SI). The sample was 95% female, 56.4% White, and 27.49% Latina. Participants received 6 months of DBT or individual and group supportive therapy and 6 months of follow-up. Primary outcomes were SH and SI.

resultsOf the sample, 63% and 74% were members of latent classes that showed improvement in SI and SH, respectively; 13% were total nonresponders, with no improvement in SI or SH. SH nonresponse emerged at the midpoint of treatment (3 months), with nonresponders showing a sharp increase in SH over the remainder of treatment and follow-up. Youth receiving DBT were significantly more likely to be an SH responder vs nonresponder than youths in individual and group supportive therapy (ꭓ

conclusionThis is the first study to identify trajectories of both SI and SH response to treatment in a sample of adolescents at risk of suicide. Results may inform personalized treatment approaches. CLINICAL TRIAL REGISTRATION INFORMATION: Collaborative Adolescent Research on Emotions and Suicide (CARES); https://www. CLINICALTRIALS: gov/; NCT01528020.