Effectiveness of Group Behavioural Activation for Depression: A Pilot Study.

Area of Science:

• Psychiatry and Mental Health
• Psychological Interventions
• Clinical Psychology

Background:

• Limited evidence exists for group-based behavioral activation (BA) compared to individual delivery.
• Understanding the impact of group BA in real-world settings is crucial for expanding treatment options.

Purpose of the Study:

• To pilot group behavioral activation (BAG) for depression in a routine primary care setting.
• To assess the acceptability, effectiveness, and outcome predictors of BAG.
• To explore the feasibility of delivering BAG within an Improving Access to Psychological Therapies (IAPT) service.

Main Methods:

• A manualized group treatment format was implemented in primary care.
• Seventy-three participants were treated across nine groups, facilitated by cognitive behavioural psychotherapists.
• Outcome measures for depression, anxiety, and functional impairment were collected sessionally.

Main Results:

• Group behavioral activation (BAG) demonstrated high acceptability with a low dropout rate (7%).
• Significant pre-post treatment improvements were observed across all outcome measures.
• A moderate to large effect size for depression (d+ = 0.74) and a 20% reliable recovery rate were found.
• Initial depression severity and attending at least four BAG sessions predicted better outcomes.

Conclusions:

• Group behavioral activation (BAG) shows clinical promise as an effective depression treatment in routine services.
• The findings support the feasibility and effectiveness of BAG.
• Larger, controlled studies are recommended to further validate these results.