Sequential mixed method evaluation of the acceptability, feasibility, and appropriateness of cognitive behavioral therapy for psychosis stepped care

BACKGROUND: Cognitive Behavioral Therapy for psychosis (CBTp) is recommended by national treatment guidelines yet remains widely inaccessible in the U.S. A stepped care model, favored and feasible for other scarce interventions, may improve access to CBTp. METHODS: We employed an exploratory sequential mixed method design inclusive of two distinct phases to quantitatively evaluate the acceptability, feasibility, and appropriateness of CBTp Stepped Care (CBTp-SC) among practitioners who were trained in low-intensity CBTp (Step 1), Group-Administered CBTp (Step 2), and Formulation-based CBTp (Step 3). In Phase 1, we queried respondents using the Acceptability of Intervention Measure, Intervention Appropriateness Measure, and the Feasibility of Intervention Measure to ascertain perceptions of these leading indicators of implementation success. In Phase 2, we conducted focus groups with CBTp-SC-trained practitioners (n = 10) and administrators (n = 2) from 2 of the 4 Phase 1 study sites to evaluate the theoretical assumptions of stepped care and to better understand key barriers and facilitators. RESULTS: Forty-six practitioners trained in all three levels of CBTp-SC completed the online survey in Phase 1. All participants were employed by a community mental health agency currently sustaining CBTp-SC. Respondents endorsed high levels of acceptability, feasibility, and appropriateness for the CBTp-SC model. We found evidence to suggest that licensed practitioners and Step 3 practitioners perceived formulation-based CBTp as more appropriate for their clients. In Phase 2, six themes emerged which affirmed the utility of the model for stakeholders, supported stepped care theoretical assumptions, and revealed key areas for improvement. CONCLUSIONS: Early adopters of CBTp-SC in the U.S. perceive it to be acceptable, feasible, and appropriate in community mental health care settings. Practitioners and administrators identified training and implementation barriers, including the importance of organizational readiness, a CBTp coordinator role, and a desire to adapt the intervention. These early findings will facilitate iterative refinement of the stepped care model for U.S. public behavioral health agencies. Additional research is needed to explore perceptions and clinical outcomes among CBTp service users.