Internet videoconferencing delivered cognitive behavior therapy for generalized anxiety disorder: protocol for a randomized controlled trial

BACKGROUND: Generalized anxiety disorder (GAD) is a chronic mental health condition that results in a significant individual and societal burden. While cognitive behavioral therapy (CBT) is well established as an efficacious treatment for GAD, many patients experience logistical barriers when accessing face-to-face CBT. Remotely delivered treatments remove many of these barriers. Despite emerging evidence demonstrating the efficacy of remotely delivered CBT for GAD, studies examining the efficacy of remote methods for GAD that are analogous to standard face-to-face treatment, in particular synchronous treatments such as CBT delivered via online videoconferencing (VCBT), are needed. METHODS: The authors propose a two-group randomized controlled trial comparing the efficacy of VCBT for GAD against a waitlist control group. The recruitment target will be 78 adults with primary GAD of at least moderate severity. The manualized high-intensity VCBT intervention will be delivered weekly over a 10-week period. After treatment completion, waitlist participants will receive the same VCBT delivered in a brief format (i.e., weekly over a 5-week period). Treatment for both groups will be delivered in real time via an online teleconferencing platform. Outcome measures will be administered at baseline, mid-treatment, post-treatment, and 3-month follow-up. DISCUSSION: This trial will report findings on the efficacy of a remote synchronous high-intensity VCBT intervention for GAD. The results have the potential to contribute towards advancing our knowledge on the evidence base for GAD, as well as increase the dissemination of VCBT for GAD. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry ACTRN12621000786897. Registered on 22 June 2021