Pilot Effectiveness and Acceptability of Partial Hospitalization Treatment Incorporating Transdiagnostic,...

Acute mental health treatment (e.g., partial hospitalization or PHP) is a critical component of the mental health services landscape for youth whose symptoms are too acute for a typical outpatient setting, but for whom inpatient psychiatric hospitalization is not recommended or desired. Very few interventions have been developed, adapted for, or evaluated in these fundamentally different delivery contexts. Transdiagnostic treatments may be ideal for addressing the comorbidity, complexity, and heterogeneity typical of acute mental health settings. Our aim was to examine initial acceptability and effectiveness of an adaptation of the Unified Protocols for Transdiagnostic Treatment of Emotional Disorders in Children and Adolescents (UP-C/A; Ehrenreich-May, Kennedy, et al., 2017), delivered as part of comprehensive therapeutic programming in a general psychiatric PHP. We recruited 152 youths (M age = 13.1 years, 62.5% female) and caregivers, who participated in an average of 11 days of intensive UP-C/A intervention. Participants rated symptoms and functioning at baseline, weekly, posttreatment, and 1-month follow-up. Latent growth curve modeling was used to examine patterns of change and evaluate the impact of potential demographic and treatment-related covariates. For all outcomes, a quadratic model best fit the data, with symptoms and emotional reactivity decreasing significantly during treatment and then leveling off during follow-up. There was a medium-sized change in functional impairment from baseline to the 1-month follow-up, and ≥90% of participants reported treatment as acceptable and helpful. Results provide initial support for use of a transdiagnostic, cognitive-behavioral intervention in acute mental health settings and suggest important future directions, including controlled trials and investigation of implementation supports.