Objective: The efficacy of behavioral activation (BA) for depression has been firmly established, and training therapists in BA may be less time-intensive than for standard interventions. Because BA addresses problematic avoidance behaviors, BA holds promise as a treatment for posttraumatic stress disorder (PTSD). We conducted a meta-analysis of both randomized controlled trials and uncontrolled studies involving the use of BA for the treatment of PTSD. Outcomes of interest were PTSD symptoms, anxiety, depression, and grief.
Method: Meta-analyses included published studies in which BA served as the primary form of treatment for PTSD symptoms, whether PTSD was a primary or secondary outcome. Analyses were performed using Comprehensive Meta Analysis software with a random-effects model.
Results: Eight studies (3 controlled, 5 uncontrolled) with a total sample size of 564 participants met final inclusion criteria. The primary analysis for controlled studies indicated a significant improvement in PTSD symptoms for BA compared with the case for wait-list control (Hedges's = 1.484) and for uncontrolled (Hedges's = 0.717) studies. Secondary analyses indicated improvement in anxiety, grief, and depression (Hedges's ranging from 0.28 to 2.29). No significant difference in effectiveness was observed for BA versus 2 active treatment comparison conditions (cognitive processing therapy and Internet-guided exposure). Effect sizes were not moderated by treatment modality (in-person vs. remote delivery) or by use of completer versus intention-to-treat data.
Conclusions: BA appears to be effective for PTSD symptoms, but additional randomized controlled trials are needed to increase confidence in these findings. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
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