Internet-based therapist-supported interpersonal psychotherapy for depression: A randomized controlled trial.

Area of Science:

• Psychiatry
• Psychology
• Digital Health

Background:

• Depression is a prevalent mental health disorder with various treatment options.
• Internet-based interventions offer accessible alternatives for psychological treatment.
• Randomized controlled trials are crucial for evaluating treatment efficacy.

Purpose of the Study:

• To assess the effectiveness of internet-based interpersonal psychotherapy (IPT) for mild to moderate depression symptoms.
• To compare internet-based IPT with a waitlist control group.
• To evaluate secondary outcomes including quality of life and anxiety symptoms.

Main Methods:

• 113 participants with mild to moderate depression were randomized to 10-week internet-based IPT or a waitlist control.
• Primary outcome: depression symptoms measured by MADRS-S (weekly) and BDI-II (pre/post).
• Secondary outcomes: quality of life, generalized anxiety, therapeutic alliance, and treatment credibility were assessed.

Main Results:

• Internet-based IPT significantly improved BDI-II scores, quality of life, and generalized anxiety symptoms compared to the control group.
• Moderate effect sizes were observed for BDI-II and quality of life, with a small effect for generalized anxiety.
• No significant difference was found in weekly MADRS-S ratings; exploratory analyses showed no association between alliance/credibility and outcomes.

Conclusions:

• Internet-based IPT demonstrates potential for improving depression, anxiety, and quality of life.
• Inconsistent depression symptom reduction across measures and high dropout rates indicate a need for enhanced treatment acceptability.
• The COVID-19 pandemic context may have influenced treatment outcomes and dropout rates.