Internet-based cognitive behavioural therapy (iCBT) for posttraumatic stress disorder versus waitlist control: study...

Area of Science:

• Psychiatry and Mental Health
• Clinical Psychology
• Digital Health Interventions

Background:

• Posttraumatic stress disorder (PTSD) is a significant mental health concern.
• Internet-delivered cognitive behavioral therapy (iCBT) offers a scalable treatment approach.
• Understanding the mechanisms of change in PTSD treatment is crucial.

Purpose of the Study:

• To evaluate the efficacy of a 10-week, six-lesson iCBT intervention for PTSD.
• To investigate the role of intolerance of uncertainty (IU) and emotion regulation in PTSD symptom reduction.
• To replicate previous findings on iCBT effectiveness in a general population sample.

Main Methods:

• A randomized controlled trial (RCT) comparing iCBT to a waitlist control group.
• Participants diagnosed with PTSD were recruited in Australia.
• Primary outcome measured by the PTSD Checklist - Civilian version (PCL-C); secondary measures included IU and emotion regulation scales.

Main Results:

• The study aims to demonstrate the efficacy of iCBT in reducing PTSD symptoms.
• Mediation analyses will explore the relationship between changes in PTSD symptoms, IU, and emotion regulation.
• The trial will assess the maintenance of treatment gains at 3-month follow-up.

Conclusions:

• The findings are expected to confirm the effectiveness of iCBT for PTSD.
• The study may elucidate the psychological mechanisms underlying treatment response.
• Results could inform future therapeutic strategies targeting IU and emotion regulation in PTSD.