Multisite Advancement of Research on Chronic Posttraumatic Headache

Overview

Posttraumatic headache (PTH) is a common and highly disabling consequence of traumatic brain injury (TBI) in U.S. military service members and veterans. Cognitive Behavioral Therapy for PTH has been shown to significantly improve disability outcomes in veterans with persistent PTH when delivered in-person. Telemedicine platforms can dramatically increase access to evidence-based care. However, whether CBT for PTH retains its effectiveness when delivered through a telemedicine platform has yet to be established. The purpose of this 3-arm randomized clinical trial is to compare Clinic-based Cognitive-Behavioral Therapy (CCBT) to Telemedicine-based Cognitive Behavioral Therapy (TCBT) and to treatment as usual (TAU) in 525 service members and veterans with chronic posttraumatic headaches (PTH) at 4 VA medical centers\* and 3 military treatment facilities across the U.S. Participants will be assessed for headache-related disability, headache experience, and psychiatric comorbidities across multiple time points. \*VA Palo Alto Health Care System is temporarily randomizing into TAU and TCBT only.

Posttraumatic headache (PTH) is noticeably more common among military service members and veterans than among civilians, with an estimated 80-90% of veterans with TBI reporting new or exacerbated headaches. Unlike civilian PTH, military and veteran PTH is likely to become chronic and recalcitrant to most front-line interventions for primary headache (e.g., migraine, tension-type). Service members and veterans with PTH report significantly decreased productivity in work and home activities and high rates of military discharge and work absenteeism. Pharmacological treatments for chronic PTH have proven problematic (i.e., unwanted side effects; worsening of symptoms long term). However, prior to 2019, guidance for non-pharmacological treatment approaches for PTH was unclear. In 2019, the investigators completed a single-site randomized clinical trial comparing Clinic-based CBT for PTH to Treatment at Usual in 193 veterans with PTH. The study found that Clinic-based CBT for PTH led to a significant improvement in headache-related disability (as measured by the 6-Item Headache Impact Test; HIT-6) at follow-up. In contrast, headache disability scores for participants in the Treatment as Usual condition remained unchanged. COVID-19 pandemic led to widespread recognition of the need for distance-technology platforms to add meaningful infrastructure for extended service delivery without the limitations of in-office care. Telehealth-based care can decrease the cost and increase the convenience of treatment leading some to suggest that telehealth may eventually become a first option for treating patients. Given the potential impact of CBT for PTH to improve the functioning of service members and veterans with PTH following TBI, it is important to determine whether the results of the single-site trial can be replicated across diverse geographic regions and whether CBT for PTH retains its efficacy in improving headache-related disability when delivered through telemedicine platforms. The study has four aims. Aim 1: Determine the efficacy of Clinic-based Cognitive-Behavioral Therapy (CCBT; using our manualized intervention) and Telemedicine-Based Cognitive Behavioral Therapy (TCBT; using our manualized intervention) for posttraumatic headache (PTH) compared to treatment as usual (TAU) across seven geographically-dispersed treatment sites. Hypothesis 1A: There will be significantly greater improvement in PTH disability (measured by the Headache Impact Test-6; HIT-6) at 3-month follow-up among service members and veterans in CCBT compared to TAU. Hypothesis 1B: There will be significantly greater improvement in PTH disability (measured by the HIT-6) at 3-month follow-up for service members/veterans who participate in TCBT compared to TAU. Aim 2: Establish the non-inferiority of TCBT to CCBT in the treatment of PTH-related disability. This second aim will be pursued if either CCBT or TCBT is superior to TAU in Aim 1. Hypothesis 2: TCBT will be non-inferior to CCBT on headache-related disability (measured by the HIT-6) at 3-month follow-up. Aim 3: Assess contribution of heterogeneity treatment effects on PTH treatment outcome. A patient-level model to assess heterogeneity treatment effect (HTE) based on site, system, and patient-level factors including all participants across sites will be run and the degree of benefit conditional on the model predictors using procedures from the Predictive Approaches to Treatment Effect Heterogeneity statement (PATH) will be assessed. Hypothesis 3: A prognostic model consisting of baseline predictors will adequately predict disability risk with good precision and calibration. Individuals predicted to be at high risk of disability will exhibit differential treatment response, with less expected benefit than individuals with less risk. Aim 4: Solicit participant perspectives on their treatment experience and identify patient-centered treatment targets that might better reflect their response to treatment. Hypothesis 4A: Patients will identify measurable treatment targets across multiple domains. Hypothesis 4B: Patients will provide treatment insights that might better reflect their response to treatment.