A randomized controlled trial of mindfulness-based cognitive therapy for bipolar disorder.Objective: To compare the efficacy of mindfulness-based cognitive therapy (MBCT) plus treatment as usual (TAU) to TAU alone for patients with bipolar disorder over a 12-month follow-up period. Method: Participants with a DSM-IV diagnosis of bipolar disorder were randomly allocated to either MBCT plus TAU or TAU alone. Primary outcome measures were time to recurrence of a DSM-IV major depressive, hypomanic or manic episode; the Montgomery-Å sberg Depression Rating Scale (MADRS); and Young Mania Rating Scale (YMRS). Secondary outcome measures were number of recurrences, the Depression Anxiety Stress Scales (DASS), and the State Trait Anxiety Inventory (STAI). Results: Ninety-five participants with bipolar disorder were recruited to the study (MBCT = 48; TAU = 47). Intention-to-treat (ITT) analysis found no significant differences between the groups on either time to first recurrence of a mood episode or total number of recurrences over the 12-month period. Furthermore, there were no significant betweengroup differences on the MADRS or YMRS scales. A significant between-group difference was found in STAI -state anxiety scores. There was a significant treatment by time interaction for the DASachievement subscale. Conclusion: While MBCT did not lead to significant reductions in time to depressive or hypo/manic relapse, total number of episodes, or mood symptom severity at 12-month follow-up, there was some evidence for an effect on anxiety symptoms. This finding suggests a potential role of MBCT in reducing anxiety comorbid with bipolar disorder. Significant outcomes
T. Perich• Mindfulness-based cognitive therapy (MBCT) significantly improved state anxiety for those diagnosed with bipolar disorder over a 12-month follow-up period.• Improvements were found in reducing dysfunctional attitudes surrounding ideas of achievement for those allocated to MBCT.
Limitations• The small sample size and high drop-out rate over the 12-month follow-up period.• A shorter follow-up period than other published trials of MBCT.
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Very few studies have examined the role of cognitive behavior therapy (CBT) in the outpatient treatment of anorexia nervosa. This study used a randomized, controlled design to evaluate a 12-month, manual based program of CBT, with behavioral family therapy as the comparison group. Twenty-five adolescents and young adults with anorexia nervosa, currently living with their families, were recruited into the study with both treatment groups receiving 21-25 sessions of therapy. Outcome measures included nutritional status, eating behaviors, mood, self-esteem, and family communication. Sixty percent of the total sample and 72% of treatment completers had "good" outcome (defined as maintaining weight within 10% of average body weight and regular menstrual cycles) at post-treatment and at six months follow-up. No significant differences between treatment groups were found and the majority of patients did not reach symptomatic recovery. While limited by the small sample size, the findings compliment and extend previous research.
This report highlights the marked commonalities of the sociodemographic and clinical characteristics of patients with bipolar disorder recruited predominantly in the outpatient setting in three different continents, that is, Australia, North America and Europe. It also demonstrates some critical distinctions between such samples, emphasizing the need to be aware of these differences when interpreting findings, such as treatment outcome, from different bipolar disorder datasets.
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