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The long-term effects of mindfulness-based cognitive therapy as a relapse prevention treatment for major depressive
Kate L Mathew1, Hayley S Whitford, Maura A Kenny
1School of Psychology, Level 4, Hughes Building, The University of Adelaide,South Australia 5005, Australia.kmathew@adam.com.au
Background:
Mindfulness-based Cognitive Therapy (MBCT) is a relapse prevention treatment for major depressive disorder.
Method:
An observational clinical audit of 39 participants explored the long-term effects of MBCT using standardized measures of depression (BDI-II), rumination (RSS), and mindfulness (MAAS).
Results:
MBCT was associated with statistically significant reductions in depression from pre to post treatment. Gains were maintained over time (Group 1, 1-12 months, p = .002; Group 2, 13-24 months, p = .001; Group 3, 25-34 months, p = .04). Depression scores in Group 3 did begin to worsen, yet were still within the mild range of the BDI-II. Treatment variables such as attendance at "booster" sessions and ongoing mindfulness practice correlated with better depression outcomes (p = .003 and p = .03 respectively). There was a strong negative correlation between rumination and mindful attention (p < .001), consistent with a proposed mechanism of metacognition in the efficacy of MBCT.
Conclusion:
It is suggested that ongoing MBCT skills and practice may be important for relapse prevention over the longer term. Larger randomized studies of the mechanisms of MBCT with longer follow-up periods are recommended.
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