Mindfulness-based cognitive therapy for preventing relapse in recurrent depression: a randomized dismantling trial

Area of Science:

• Psychiatry
• Clinical Psychology
• Neuroscience

Background:

• Recurrent major depressive disorder (MDD) poses a significant public health challenge.
• Identifying effective relapse prevention strategies is crucial for long-term patient well-being.
• Previous research suggests mindfulness-based cognitive therapy (MBCT) may aid in preventing depressive relapses.

Purpose of the Study:

• To compare the efficacy of MBCT against cognitive psychological education (CPE) and treatment as usual (TAU) in preventing MDD relapse.
• To investigate the role of childhood trauma severity in moderating treatment effects on relapse risk.
• To assess the long-term effectiveness of MBCT in patients with a history of recurrent depression.

Main Methods:

• A randomized controlled trial involving 274 participants with a history of at least 3 MDD episodes.
• Participants were allocated to MBCT plus TAU, CPE plus TAU, or TAU alone (2:2:1 ratio).
• MBCT and CPE were delivered over 8 weekly sessions, with MBCT including meditation and CPE focusing on psychoeducation.

Main Results:

• No significant difference in MDD relapse risk was observed between MBCT, CPE, and TAU across the entire study group.
• Childhood trauma severity was a significant predictor of relapse, increasing the risk.
• MBCT demonstrated a significant protective effect against relapse specifically for participants with above-median childhood trauma severity when compared to TAU.

Conclusions:

• MBCT offers significant relapse protection for recurrent depression patients with a history of childhood trauma.
• MBCT did not show a significant advantage over an active control (CPE) or TAU for the general patient population with recurrent depression.
• Treatment effectiveness may be moderated by individual vulnerability factors such as childhood trauma history.