A Randomized Clinical Trial of Clinician-Supported PTSD Coach in VA Primary Care Patients

Brief modular anxiety intervention for primary care: Hybrid I pilot randomized controlled trial of feasibility, acceptability, effectiveness, and implementation potential

BACKGROUND

Anxiety is highly prevalent, but undertreated, in primary care. Brief, non-pharmacological interventions are needed. Modular Anxiety Skills Training (MAST), a cognitive-behavioral anxiety intervention, was developed for primary care and tailored for a Veteran sample (MAST-V). The purpose of this mixed methods pilot study was to evaluate MAST-V's feasibility, acceptability, and implementation potential, and preliminarily examine its effectiveness compared to Primary Care Behavioral Health (PCBH) usual care.

METHODS

This hybrid I randomized controlled trial (conducted 2019-2021) assigned 35 primary care patients (Mage = 47, 17 % female, 27 % racial/ethnic minority) with clinically significant anxiety symptoms to receive MAST-V or PCBH usual care. Participants completed validated measures of anxiety symptoms and functional impairment at 0, 4, 8, 12, and 16 weeks.

RESULTS

Participants attended more sessions in MAST-V than usual care. After necessary adjustments to reduce session duration, MAST-V will likely fit within PCBH practice parameters. Participants in both conditions valued treatment, but treatment satisfaction, credibility, and therapeutic alliance were higher for MAST-V. Study therapists achieved high treatment fidelity and rated MAST-V as highly feasible, acceptable, and appropriate for PCBH. They identified ways to address potential barriers to implementation. MAST-V was more effective than usual care in reducing anxiety symptoms and impairment.

LIMITATIONS

This was a small pilot study at a single site using study therapists. Results should be considered preliminary until replicated in a full-scale clinical trial.

CONCLUSIONS

This brief modular anxiety intervention, which was designed with implementation in mind, may help to address the anxiety treatment gap in primary care.

A counsellor-supported 'PTSD Coach' intervention versus enhanced Treatment-as-Usual in a resource-constrained setting: A randomised controlled trial

To widen treatment access for posttraumatic stress disorder (PTSD) in resource-constrained South Africa, we evaluated the feasibility and effectiveness of a counsellor-supported PTSD Coach mobile application (app) (PTSD Coach-CS) intervention on PTSD and associated sequelae in a community sample. Participants (female = 89%; black = 77%; aged 19-61) with PTSD were randomised to PTSD Coach-CS (n = 32) or enhanced Treatment-as-Usual (n = 30), and assessed with the Clinician-Administered PTSD Scale (CAPS-5), PTSD Checklist (PCL-5) and Depression, Anxiety and Stress Scale-21 items, at pre- to post-treatment and follow-up (1 and 3 months). We also collected data on user experiences of the PTSD Coach app with self-administered surveys. We conducted an intent-to-treat analysis and linear mixed models. A significant (group × time) effect for the CAPS-5 (F3.136 = 3.33, p = 0.02) indicated a greater reduction in PTSD symptom severity over time for the intervention group with a significant between-group effect size detected at 3-month follow-up. Significant between-group effect sizes were detected in self-reported stress symptom reduction in the intervention group at post-treatment and 3-month follow-up. Participants perceived the app as helpful and were satisfied with the app. Findings suggest PTSD Coach-CS as a suitable low-cost intervention and potential treatment alternative for adults with PTSD in a resource-constrained country. Replication in larger samples is needed to fully support effectiveness. Pan African Trial Registry: PACTR202108755066871.

Testing adaptive interventions to improve PTSD treatment outcomes in Federally Qualified Health Centers: Protocol for a randomized clinical trial

BACKGROUND

Posttraumatic stress disorder (PTSD) disproportionately affects low-income individuals and is untreated in 70% of those affected. One third of low-income Americans are treated in Federally Qualified Health Centers (FQHCs), which do not have the capacity to provide all patients with first-line treatments such as Prolonged Exposure (PE). To address this problem, FQHCs could use low-intensity interventions (e.g., Clinician-Supported PTSD Coach: CS PTSD Coach) and medium-intensity interventions (e.g., PE for Primary Care: PE-PC) to treat PTSD with fewer resources. However, some patients will still require high-intensity treatments (e.g., full-length PE) for sustained clinical benefit. Thus, there is a critical need to develop stepped-care models for PTSD in FQHCs.

METHOD

We are conducting a Sequential, Multiple Assignment, Randomized Trial (SMART) with 430 adults with PTSD in FQHCs. Participants are initially randomized to CS PTSD Coach or PE-PC. After four sessions, early responders step down to lower frequency interaction within their assigned initial treatment strategy. Slow responders are re-randomized to either continue their initial treatment strategy or step up to Full PE for an additional eight weeks. The specific aims are to test the effectiveness of initiating treatment with PE-PC versus CS PTSD Coach in reducing PTSD symptoms and to test the effectiveness of second-stage strategies (continue versus step-up to Full PE) for slow responders.

CONCLUSIONS

This project will provide critical evidence to inform the development of an effective stepped-care model for PTSD. Testing scalable, sustainable sequences of PTSD treatments delivered in low-resource community health centers will improve clinical practice for PTSD.