Abstract
BACKGROUND: Train-the-trainer (TT) implementation strategies (in which designated clinicians are trained to then train others in an intervention) are promising approaches to support mental health clinician use of evidence-based interventions in school contexts. However, there is little evidence to date examining clinicians' perceptions of the acceptability and feasibility of TT strategies, or comparing clinicians' perceptions of different types of TT strategies. METHODS: The current study was conducted as part of a larger hybrid effectiveness-implementation trial, in which school-based therapists and supervisors received one of two different types of implementation support to implement cognitive behavioral therapy (CBT) groups for anxiety: TT (i.e., initial training for therapists and supervisors) or enhanced TT (TT+; i.e., initial training for therapists and supervisors, and ongoing external consultation for supervisors). We used applied thematic analysis to compare qualitative interview transcripts from 28 therapist interviews and 33 supervisor interviews from therapists and supervisors who received TT or TT+ support and report themes that were similar and different across the two groups. RESULTS: Most themes were similar across the TT and TT+ conditions: therapists and supervisors in both conditions perceived the group anxiety intervention as acceptable and viewed supervision as acceptable, helpful, and feasible. Therapists and supervisors in both conditions had mixed impressions of the contextual appropriateness of the group anxiety intervention, and some reported logistical challenges with weekly supervision. Some unique themes were identified among the TT+ condition, including supervisors experiencing professional growth, and therapists and supervisors perceiving supervision as critically important and enjoyable. CONCLUSIONS: These results suggest that TT implementation support, using a model in which an internal supervisor receives initial training and then provides ongoing supervision, is acceptable and feasible to support a group CBT intervention in schools. The results also highlight additional benefits that therapists and supervisors perceived when supervisors received ongoing consultation. CLINICAL TRIAL REGISTRATION INFORMATION: The clinical trial from which these data were derived was registered at ClinicalTrials.gov (https://clinicaltrials.gov/) prior to the time of first patient enrollment. The registration number is: NCT02651402.