Extending prolonged exposure for veterans with posttraumatic stress disorder: When is enough really enough?

Area of Science:

• Psychology
• Clinical Psychology
• Trauma Studies

Background:

• Post-traumatic stress disorder (PTSD) significantly impacts veteran well-being.
• Prolonged Exposure (PE) therapy is a common treatment for PTSD in veterans.
• Identifying early predictors of treatment success is crucial for optimizing veteran care.

Purpose of the Study:

• To determine if early symptom reduction in PE therapy predicts meaningful change (MC) in veterans with PTSD.
• To explore the number of PE sessions typically required for MC.
• To identify patient characteristics associated with achieving MC.

Main Methods:

• Program evaluation data from 451 veterans treated with PE were analyzed.
• Survival analysis identified the modal number of sessions for MC.
• Logistic regressions examined predictors of MC.
• A subset analysis focused on patients not achieving MC by Session 8.

Main Results:

• The overall MC rate was 33.4%, with a modal need of nine PE sessions.
• Veterans showing at least a 10% symptom reduction by Session 8 had a 42.3% MC rate.
• Those with less than 10% reduction by Session 8 had only a 7.1% MC rate, suggesting limited benefit from continued PE.

Conclusions:

• Early symptom reduction (≥10% by Session 8) is a strong predictor of meaningful treatment outcomes in PE for veteran PTSD.
• Patients not meeting this early benchmark may not benefit from further PE, suggesting consideration of alternative treatments or augmentation strategies.
• Optimizing PTSD treatment for veterans may involve adjusting therapeutic approaches based on early response indicators.