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Internet-Based Cognitive Behavioral Therapy for Depression: A Systematic Review and Individual Patient Data Network
Eirini Karyotaki1,2,3, Orestis Efthimiou1,4, Clara Miguel2,5
1Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
JAMA Psychiatry
|January 20, 2021
Summary
Personalized internet-based cognitive behavioral therapy (iCBT) is crucial for depression. Guided iCBT shows greater short-term benefits, especially for moderate to severe depression, while unguided iCBT is effective for mild symptoms.
Area of Science:
- Mental Health
- Digital Therapeutics
- Psychiatry
Background:
- Internet-based cognitive behavioral therapy (iCBT) offers accessible treatment for depression.
- Personalizing iCBT interventions can enhance treatment effectiveness based on individual patient needs.
- Understanding the comparative efficacy of guided versus unguided iCBT is essential for optimizing depression care.
Purpose of the Study:
- To estimate the personalized short-term and long-term relative efficacy of guided and unguided iCBT for depression.
- To identify patient characteristics that predict differential treatment responses to iCBT modalities.
- To inform personalized treatment selection for depression management.
Main Methods:
- Systematic review and individual patient data (IPD) network meta-analysis of randomized clinical trials (RCTs) up to January 2019.
- Included RCTs compared guided or unguided iCBT against each other or control interventions for depression.
- IPD network meta-regression was used to explore treatment effect modifiers, with depression severity assessed by Patient Health Questionnaire-9 (PHQ-9) scores.
Main Results:
- Both guided and unguided iCBT demonstrated greater effectiveness than control treatments for depression in the short and long term.
- Guided iCBT showed higher short-term effectiveness than unguided iCBT (MD -0.8 PHQ-9 points), with no significant difference at 6 or 12 months.
- Baseline depression severity was a key modifier: guided iCBT was more effective for moderate-to-severe depression (PHQ-9 > 9), while unguided iCBT was similarly effective for mild/subthreshold depression (PHQ-9 5-9).
Conclusions:
- Guided iCBT offers superior short-term benefits for individuals with moderate to severe depression.
- Unguided iCBT demonstrates comparable effectiveness for those with mild or subthreshold depressive symptoms.
- Personalized selection of iCBT modality is necessary for efficient and effective depression treatment allocation.
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