Dialectical behaviour therapy for women with borderline personality disorder - 12-month, randomised clinical trial in The Netherlands

Background Dialectical behaviour therapy (DBT) is widely considered to be a promising treatment for borderline personality disorder (BPD). However, the evidence for its efficacy published thus far should be regarded as preliminary. Aims To compare the effectiveness of DBT with treatment as usual for patients with BPD and to examine the impact of baseline severity on effectiveness. Method Fifty-eight women with BPD were randomly assigned to either 12 months of DBT or usual treatment in a randomised controlled study. Participants were recruited through clinical referrals from both addiction treatment and psychiatric services. Outcome measures included treatment retention and the course of suicidal, self-mutilating and self-damaging impulsive behaviours. Results Dialectical behaviour therapy resulted in better retention rates and greater reductions of self-mutilating and seff-damaging impulsive behaviours compared with usual treatment, especially among those with a history of frequent self-mutilation. Conclusions Dialectical behaviour therapy is superior-to usual treatment in reducing high-risk, behaviours in patients with BPD.