Virtual reality exposure therapy for posttraumatic stress disorder (PTSD): a meta-analysis

Area of Science:

• Psychiatry and Behavioral Sciences
• Clinical Psychology
• Medical Technology

Background:

• Virtual Reality Exposure Therapy (VRET) is effective for specific phobias, but its utility for posttraumatic stress disorder (PTSD) remains uncertain.
• Existing research on VRET for PTSD lacks conclusive evidence, necessitating further investigation.

Purpose of the Study:

• To conduct a meta-analysis evaluating the efficacy of VRET for PTSD compared to waitlist and active control conditions.
• To assess the impact of VRET on PTSD symptom severity, as well as secondary outcomes of depressive and anxiety symptoms.

Main Methods:

• A systematic literature search identified nine controlled studies with 296 participants (124 in VRET, 172 in control groups).
• Hedges' *g* was used to calculate differences in PTSD, depressive, and anxiety symptoms post-treatment between VRET and control conditions.

Main Results:

• VRET demonstrated significantly better outcomes than waitlist controls for PTSD symptoms (*g* = 0.62, *p* = 0.017) and depressive symptoms (*g* = 0.50, *p* = 0.008).
• No significant differences were found between VRET and active comparators for PTSD (*g* = 0.25, *p* = 0.356) or depressive symptoms (*g* = 0.24, *p* = 0.340).
• No significant effects were observed for anxiety symptoms.

Conclusions:

• VRET may be a viable treatment option for PTSD, comparable in effectiveness to active comparator therapies.
• Findings should be interpreted cautiously due to the limited number of studies and the predominantly male military participant pool.
• Further controlled trials with diverse trauma types and balanced gender representation are needed to solidify VRET's role in PTSD treatment.