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The unified protocol as an internet-based intervention for emotional disorders: Randomized controlled trial
Carmen Schaeuffele1, Sophie Homeyer1, Luis Perea1
1Department of Education and Psychology, Freie Universität Berlin, Berlin, Germany.
The Internet-based Unified Protocol (UP) effectively reduced symptom distress for anxiety, depression, and somatic disorders. Treatment gains were sustained at follow-up, showing UP
Area of Science:
- Clinical Psychology
- Digital Health
- Psychotherapy Research
Background:
- The Unified Protocol (UP) is a transdiagnostic intervention primarily used for anxiety disorders in face-to-face settings.
- There is a need to adapt and evaluate transdiagnostic interventions for broader accessibility, including for depressive and somatic symptom disorders.
- Internet-based interventions offer a scalable platform for delivering psychological treatments.
Purpose of the Study:
- To investigate the efficacy of a 10-week Internet-based adaptation of the Unified Protocol (UP).
- To assess the UP's effectiveness for individuals with anxiety, depressive, and somatic symptom disorders.
- To evaluate the maintenance of treatment gains at 1- and 6-month follow-up.
Main Methods:
- A randomized controlled trial (DRKS00014820) involving 129 participants.
- Participants were randomized to either the Internet-based UP treatment or a waitlist control group.
- Outcome measures included symptom distress, life satisfaction, affect, and anxiety, depression, and somatic symptom burden.
Main Results:
- Significant improvements were observed in symptom distress, life satisfaction, and affect for the treatment group compared to the waitlist control.
- Clinically significant reductions in anxiety, depression, and somatic symptom burden were demonstrated (within-group Hedges' g = 0.32-1.38; between-group g = 0.20-1.11).
- Treatment gains were maintained at 1- and 6-month follow-up assessments, with comparable effects for anxiety and depressive disorders.
Conclusions:
- The Internet-based Unified Protocol is an effective transdiagnostic intervention for alleviating symptom distress across emotional disorders.
- The findings support the UP's applicability as a digital mental health treatment, extending its use beyond traditional face-to-face settings.
- Further research is recommended to explore applicability for specific disorders and to enhance treatment adherence and reduce attrition rates.
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