The Prevalence and Clinical Characteristics of Borderline Personality Disorder in South Korea Using National Health Insurance Service Customized Database.

PURPOSE: The purpose of the present study was to identify the prevalence and clinical characteristics of borderline personality disorder (BPD) in South Korea using the Korean National Health Insurance database (DB). MATERIALS AND METHODS: We used the National Health Insurance Service (NHIS)'s research DB (NHIS-2021-1-790) from January 1, 2010 to December 31, 2019, to make customized DB including sociodemographic information and absence or presence of BPD and other psychiatric disorders. The prevalence and the age of onset of BPD was estimated. To compare medical service utilization between the BPD group and the control group, a 1:1:1 propensity score matching was employed, and the regression analysis was conducted. RESULTS: The prevalence of BPD per 10000 people was 0.96 in 2010 and 1.06 in 2019. The prevalence ratio of males to females was 1:1.38 in 2010 and 1:1.65 in 2019, showing that BPD was more prevalent in females. The patients' overall average age of onset was 33.19±14.6 years, with the highest prevalence shown in 8503 people in their 20s. By administrative district, the highest prevalence of BPD per 10000 people was shown in Seoul with 8.71 and the lowest in Jeollanam-do with 2.35. The BPD patients showed a pattern of extensive use of general and mental healthcare services. CONCLUSION: This study identified the prevalence of BPD on a national DB set in South Korea. Although the prevalence of BPD in South Korea was relatively low compared to other countries, there was a steady increase in the number of BPD patients over a decade, which may be possibly due to an increased awareness of mental health and campaigns among healthcare providers and users in the country.

Borderline Personality Disorder.

Borderline personality disorder is a psychological disorder characterized by a pervasive pattern of instability in affect regulation, impulse control, interpersonal relationships, and self-image. Borderline personality disorder may be present in up to 6.4% of adult primary care visits, which is fourfold higher than in the general population. Borderline personality disorder is underdiagnosed and most patients who have it also have additional psychiatric conditions. Individuals with borderline personality disorder have an underlying vulnerability to emotional hyperarousal states and social and interpersonal stressors. Clinically these patients may have high health care utilization, health-sabotaging behaviors, chronic or vague somatic concerns, aggressive outbursts, high-risk sexual behaviors, and substance use. Obesity and binge-eating disorders are common comorbidities in those diagnosed with borderline personality disorder. There is an established correlation between borderline personality disorder and increased suicide risk. Structured interview assessments that are designed specifically for borderline personality disorder include the Revised Diagnostic Interview for Borderlines and the Structured Clinical Interview for the DSM-5 Alternative Model for Personality Disorders. As general guidelines for practice, family physicians should avoid excessive familiarity, schedule regular visits, set appropriate limits, and maintain awareness of personal feelings. Use of effective communication strategies such as motivational interviewing and problem-solving techniques can help navigate addressing problematic behaviors in patients who have borderline personality disorder. Multiple behavior treatments are useful, the most effective of which are dialectical behavior therapy and mentalization-based therapy. No medications have been approved by the U.S. Food and Drug Administration specifically for the treatment of borderline personality disorder.

Trauma and Outcomes of Mentalization-Based Therapy for Individuals With Borderline Personality Disorder.

OBJECTIVE: Recent meta-analyses suggest that many patients with borderline personality disorder have a history of complex trauma. Although trauma is central in mentalization-based approaches to the understanding of borderline personality disorder, surprisingly little is known about the effects of trauma on outcomes of mentalization-based treatment (MBT). This article investigates the prevalence and impact of childhood trauma among patients with borderline personality disorder participating in a randomized controlled trial (RCT) comparing day hospital MBT (MBT-DH) and intensive outpatient MBT (MBT-IOP). METHODS: All 114 patients from the original multicenter RCT in the Netherlands were included in this study. Childhood trauma was assessed at baseline (with the Childhood Trauma Questionnaire), and its impact on symptom severity, interpersonal functioning, and borderline pathology was investigated through multilevel modeling for 36 months after the start of treatment. RESULTS: Childhood trauma was common among patients with borderline personality disorder referred to MBT, with more than 85% meeting cutoff criteria for substantial childhood trauma. Childhood trauma had little impact on outcomes of either MBT-DH or MBT-IOP in terms of improved borderline personality disorder features or interpersonal functioning. However, patients with substantial childhood trauma seemed to improve more rapidly with MBT-DH, as compared with MBT-IOP, in terms of symptom severity. In addition, patients with a history of emotional neglect showed more rapid changes in symptoms of borderline personality disorder with MBT-DH compared with MBT-IOP. CONCLUSIONS: Findings are discussed in the context of a social communicative approach to borderline personality disorder, with a focus on the need to address trauma in MBT.

Mechanisms of change in brief treatments for borderline personality disorder: a protocol of a randomized controlled trial.

BACKGROUND: Borderline personality disorder (BPD) is one of the most frequent, most debilitating and lethal mental conditions and is associated with a serious burden of disease. Treatment for patients with BPD involves structured psychotherapy, and may involve brief psychiatric treatment as first-line intervention. No controlled study has assessed the effectiveness of such brief intervention. Whereas most psychotherapy studies in patients with BPD focus on the effectiveness of the intervention, we still lack an understanding of how and why these effects are produced from a patient process perspective. It is therefore of utmost importance to study the treatment-underlying mechanisms of change. The present study plans to apply novel measurement methods for assessing change in two central psychobiological processes in BPD: emotion and socio-cognitive processing. The study uses theory-driven and ecologically valid experimental tasks, which take the patient's individual experience as the anchor, by integrating methodology from psychotherapy process and neurofunctional imagery research. METHODS: The aim of this two-arm, randomized controlled study is to test the effects (i.e., symptom reduction) and the underlying mechanisms of change associated with a brief psychiatric treatment (10 sessions over 4 months), compared with treatment as usual. Participants (N = 80 patients with BPD) undergo assessments at four points (intake, 2 months, discharge, and 12-month follow up). In addition to symptom measures, individuals undergo a 2-step assessment for the potential mechanisms of change (i.e., emotion and socio-cognitive processing): (1) behavioral and (2) (for a sub-sample) neurofunctional. We hypothesize that change in the mechanisms explains the treatment effects. DISCUSSION: This study uses an easy-to-implement treatment of BPD, and a sophisticated assessment procedure to demonstrate the critical role of psychobiological change in emotion and socio-cognitive processing in brief treatments. It will help increase the effectiveness of brief treatment for BPD and help diminish the societal burden of disease related to BPD, in these early stages of treatment. TRIAL REGISTRATION {2}: ClinicalTrials.gov: NCT03717818. Registered on 24 October 2018). Protocol version {3} number 2 from 9 February 2018.

Borderline Personality Disorder in Patients With Medical Illness: A Review of Assessment, Prevalence, and Treatment Options.

OBJECTIVE: Borderline personality disorder (BPD) occurs in 0.7% to 3.5% of the general population. Patients with BPD experience excessive comorbidity of psychiatric and somatic diseases and are known to be high users of health care services. Because of a range of challenges related to adverse health behaviors and their interpersonal style, patients with BPD are often regarded as "difficult" to interact with and treat optimally. METHODS: This narrative review focuses on epidemiological studies on BPD and its comorbidity with a specific focus on somatic illness. Empirically validated treatments are summarized, and implementation of specific treatment models is discussed. RESULTS: The prevalence of BPD among psychiatric inpatients (9%-14%) and outpatients (12%-18%) is high; medical service use is very frequent, annual societal costs vary between &OV0556;11,000 and &OV0556;28,000. BPD is associated with cardiovascular diseases and stroke, metabolic disease including diabetes and obesity, gastrointestinal disease, arthritis and chronic pain, venereal diseases, and HIV infection as well as sleep disorders. Psychotherapy is the treatment of choice for BPD. Several manualized treatments for BPD have been empirically validated, including dialectical behavior therapy, transference-focused psychotherapy, mentalization-based therapy, and schema-focused therapy. CONCLUSIONS: Health care could be substantially improved if all medical specialties would be familiar with BPD, its pathology, medical and psychiatric comorbidities, complications, and treatment. In mental health care, several empirically validated treatments that are applicable in a wide range of clinical settings are available.

Juggling thoughts and feelings: How do female patients with borderline symptomology and substance use disorder experience change in mentalization-based treatment?

OBJECTIVE: The aim of this study was to explore the experience of central psychological change processes for female patients with borderline symptomology and substance use disorder in mentalization-based treatment. METHOD: Semi-structured qualitative interviews on experiences from mentalization-based treatment with 13 participants were conducted. The interview material was analysed within a hermeneutical-phenomenological epistemology, with emphasis on researcher reflexivity. RESULTS: The following themes regarding central psychological change processes were found: "by feeling the feeling," "by thinking things through," "by walking in your shoes to see myself" and "by stepping outside of own bad feelings in seeing you." Two of these themes dealt with intra-psychic modes of how to relate to own mind-states. First, they had a shift from avoiding emotions into tolerating emotions. Second, they discovered the ability to think mental states through. Two themes dealt with mental stances for dealing with interpersonal situations, where one mode included a self-reflective stance in difficult encounters, and the other mode entailed an empathic reflective stance by exploring others' intentionality. CONCLUSIONS: The findings are in line with theoretical assumptions that increasing mentalizing capacity is a central change process for these patients. Furthermore, the findings demonstrate the complex interaction between different modes of mentalizing. Clinical or methodological significance of this article: The article explores change processes in manualized psychotherapy for patients with comorbid borderline personality disorder and substance use disorder, a focus which is not researched in the clinical literature. We claim that putting attention to this patient group and investigating their potential in psychotherapy is of clinical significance. Methodologically, this article utilizes thematic analyses within an epistemology following a specific procedure that is step based and transparent, thus it is of interest for qualitative researchers who also utilize thematic analyses.

[Mentalization based treatment (MBT) for borderline personality disorder among a population of French-speaking patients]. / Implémentation francophone de la thérapie basée sur la mentalisation (TBM) pour le trouble de personnalité limite.

INTRODUCTION: Borderline Personality Disorder is a frequent disorder that is challenging for therapists to treat due to the prevalence of self-damaging and suicidal behaviours and interruptions of the therapeutic alliance, as well as a poor response to psychotropic treatments. In recent years, several empirically-validated psychotherapeutic treatments have been developed, including Mentalisation-Based Therapy, which is an integrative psychodynamic approach created in Britain. Although numerous studies have showed Mentalisation-Based Therapy to be an efficient treatment of Borderline Personality Disorder, its specific components have yet to be assessed. Furthermore, there have been no empirical studies conducted among groups of French-speaking patients. The purpose of this study is twofold: To provide an initial assessment of the efficacy of the mentalisation-based psycho-educational component, which is the first component of any mentalisation-based therapy, and to provide the first assessment of this approach among a population of French-speaking patients. METHOD: Over a three-month period, 14 Borderline Personality Disorder sufferers followed a psycho-educational Mentalisation-Based Therapy programme consisting of group sessions to introduce patients to mentalisation and weekly individual interviews. Patients filled in various question forms assessing, among others, the intensity of their depression, their degree of hopelessness, their emotional regulation strategies, and their reflective abilities. RESULTS: The psycho-educational component of Mentalisation-Based Therapy is significantly associated with improved cognitive emotional regulation, empathy and reflective abilities, and with a reduced sense of hopelessness. The programme retention rate was of 71.4%. CONCLUSION: Despite the small sample size and the short treatment period, these preliminary results demonstrate the efficiency of the psycho-educational phase of Mentalisation-Based Therapy, and in particular the positive effects of the treatment on depressive symptomatology and self-regulation processes among patients with a Borderline Personality Disorder diagnosis.

Mentalization-based therapy adherence and competence stimulates in-session mentalization in psychotherapy for borderline personality disorder with co-morbid substance dependence.

OBJECTIVE: To test whether adherence to mentalization-based treatment (MBT) principles predict better patient in-session mentalizing. METHODS: Two sessions for each of 15 patients with borderline personality disorder and comorbid substance abuse disorder were rated for MBT adherence and competence. Individual patient statements were rated for Reflective Functioning (RF), therapist statements were rated as demanding RF or not. Data were analysed using multilevel modelling. RESULTS: MBT adherence and competence predicted higher session RF (ß = .58-.75), even while controlling for pre-treatment RF. In addition, therapist interventions directed toward exploring mental states predicted higher RF of subsequent patient responses (ß = .11-.12). CONCLUSIONS: MBT adherence and competence were significantly related to patient in-session mentalizing, supporting the validity of MBT principles. Results point to the importance of supervision for therapists to become adherent to MBT principles. The small number of patients and sessions limits generalizability of results.

A randomised controlled trial of mentalization-based treatment versus structured clinical management for patients with comorbid borderline personality disorder and antisocial personality disorder.

BACKGROUND: Antisocial personality disorder (ASPD) is an under-researched mental disorder. Systematic reviews and policy documents identify ASPD as a priority area for further treatment research because of the scarcity of available evidence to guide clinicians and policymakers; no intervention has been established as the treatment of choice for this disorder. Mentalization-based treatment (MBT) is a psychotherapeutic treatment which specifically targets the ability to recognise and understand the mental states of oneself and others, an ability shown to be compromised in people with ASPD. The aim of the study discussed in this paper is to investigate whether MBT can be an effective treatment for alleviating symptoms of ASPD. METHODS: This paper reports on a sub-sample of patients from a randomised controlled trial of individuals recruited for treatment of suicidality, self-harm, and borderline personality disorder. The study investigates whether outpatients with comorbid borderline personality disorder and ASPD receiving MBT were more likely to show improvements in symptoms related to aggression than those offered a structured protocol of similar intensity but excluding MBT components. RESULTS: The study found benefits from MBT for ASPD-associated behaviours in patients with comorbid BPD and ASPD, including the reduction of anger, hostility, paranoia, and frequency of self-harm and suicide attempts, as well as the improvement of negative mood, general psychiatric symptoms, interpersonal problems, and social adjustment. CONCLUSIONS: MBT appears to be a potential treatment of consideration for ASPD in terms of relatively high level of acceptability and promising treatment effects. TRIAL REGISTRATION: ISRCTN ISRCTN27660668 , Retrospectively registered 21 October 2008.

Pharmacotherapy for borderline patients: business as usual or by default?

In their analysis of a representative sample from the Prescribing Observatory for Mental Health in the UK health services, Paton et al found that 92% of patients with borderline personality disorder (BPD) received prescriptions for psychotropic medications. Although international guidelines recommend pharmacotherapy for comorbid psychiatric disorders whenever necessary, 82% of the UK BPD patients without such comorbid conditions nevertheless received pharmacotherapy "by default," mostly off-label polypharmacy without adequate psychiatric controls for effectiveness and tolerability. Business as usual? Bad care? International practice guidelines for the treatment of BPD all recommend evidence-based psychological treatment whenever possible (especially manualized psychotherapy like dialectical behavior therapy, schema-focused therapy, mentalization-based treatment, transference-focused psychotherapy) as the first-choice treatment.

The efficacy of two adolescent substance abuse treatments and the impact of comorbid depression: results of a small randomized controlled trial.

OBJECTIVE: The purpose of this randomized trial was to investigate the efficacy of 2 behavioral treatments focusing on different change mechanisms in ameliorating a borderline personality disorder constellation of behaviors and substance use in adolescents referred by juvenile diversion programs. METHODS: Forty adolescents 14-17 years of age and meeting Diagnostic and Statistical Manual of Mental Disorders (4th ed.) criteria for borderline personality disorder and substance use disorders were randomized to integrative borderline personality disorder-oriented adolescent family therapy (I-BAFT) or individual drug counseling. This design allowed a comparison of 2 manualized interventions, 1 family based and 1 individually oriented. Profiles of clinical change were used to detect impact and estimate treatment effect sizes. RESULTS: Primary analyses showed that both interventions had a clinically significant impact on borderline personality disorder behaviors 12 months after baseline but with no differential treatment effects. The impact on substance use was more complex. Subgroup analyses revealed that adolescents with depression had significantly more severe profiles of borderline personality disorder and substance use. These youths were the only group to show reductions in substance use, but they only did so if they received the I-BAFT intervention. Study data also documented the high dosage of intensive residential treatment needed by this population. CONCLUSIONS AND IMPLICATIONS FOR PRACTICE: Results highlight the intensive treatment needs of juvenile justice-involved youths with co-occurring substance use and borderline personality disorder including depression, the hybrid outpatient and residential treatment often required by this population, and the promise of a family-oriented approach, particularly for youths with severe symptoms and co-occurring depression. (PsycINFO Database Record

Developmental trajectories to male borderline personality disorder.

Due to the higher diagnostic prevalence of borderline personality disorder (BPD) in females, there exists a dearth of literature on the manifestations of BPD in men and minimal information on male developmental trajectories to the disorder. To identify precursors of BPD in males, surveys were administered to parents about their BPD male offspring and non-BPD male siblings. Questions covered aspects of probands' lives from infancy to late adolescence. BPD offspring were identified through self-reported clinical diagnoses and standardized diagnostic criteria embedded within the survey. A total of 263 male offspring (97 meeting strict criteria for BPD and 166 non-BPD siblings) were studied. The authors found that parents describe the early emergence of a constellation of symptoms in their BPD sons that include separation anxiety starting in infancy, body image concerns in childhood, and impulsivity, emptiness, and odd thinking in adolescence. This trajectory differs from the developmental course found in females diagnosed with BPD.

Borderline personality features and harmful dysregulated behavior: the mediational effect of mindfulness.

OBJECTIVES: The current preliminary study investigated whether deficits in mindfulness (awareness, attentiveness, and acceptance of the present experience) may underlie the relationship of borderline personality disorder (BPD) features to self-injury and overall acts of harmful dysregulated behavior. METHOD: Nonparametric bootstrapping procedures were used to examine theoretical relationships among variables in a psychiatric sample of adults (N = 70). Participants were asked to imagine themselves in distress-inducing situations and then write what they would actually do to decrease distress in such situations. RESULTS: As hypothesized, mindfulness statistically mediated the relationship of BPD features to reported acts of (a) self-injury and (b) overall harmful dysregulated behaviors. CONCLUSIONS: Difficulties in the ability to be aware, attentive, and accepting of ongoing experience may play a role in the relationship of BPD features to harmful dysregulated behaviors. Future research should clarify potential reciprocal effects between BPD features and mindfulness with prospective, multioccasion designs.

Religion/spirituality status and borderline personality symptomatology among outpatients in an internal medicine clinic.

OBJECTIVE: This study was designed to assess religion/spirituality (RS) status over the preceding 12 months in relationship to borderline personality symptomatology status. METHODS: Using a cross-sectional consecutive sample of internal medicine outpatients and a self-report survey methodology, we examined RS using the 12-item Functional Assessment of Chronic Illness Therapy-Spiritual Well-Being Scale (FACIT-Sp-12), and borderline personality symptomatology using two self-report measures, the borderline personality scale of the Personality Diagnostic Questionnaire-4 and the Self-Harm Inventory. RESULTS: The majority of FACIT-Sp-12 scales as well as the overall FACIT-Sp-12 score demonstrated an inverse relationship with scores on the individual measures for borderline personality symptomatology as well as a combined measure of such symptoms (individuals who scored positively on both measures). In other words, lower RS was identified in participants with higher levels of borderline personality symptomatology. CONCLUSIONS: According to findings, compared to participants without borderline personality symptomatology, those with such symptomatology evidenced statistically significantly lower RS on most study scales as well as the overall FACIT-Sp-12 score. This suggests that individuals with borderline personality symptomatology have lower overall levels of RS than individuals without this type of psychopathology.

Pain sensitivity and neural processing during dissociative states in patients with borderline personality disorder with and without comorbid posttraumatic stress disorder: a pilot study.

BACKGROUND: Stress-induced dissociative states involving analgesia are a common feature of borderline personality disorder (BPD) and posttraumatic stress disorder (PTSD). Our aim was to investigate the psychologic, somatosensory (pain sensitivity) and neural correlates of dissociative states in patients with these disorders. METHODS: We included 15 women with BPD who were not taking medication; 10 of these women had comorbid PTSD. While undergoing functional magnetic resonance imaging at 1.5 Tesla, participants were exposed to a script describing a personalized dissociation-inducing situation and a personalized script describing a neutral situation. We assessed dissociative psychopathology and pain sensitivity. RESULTS: Dissociative psychopathology scores were significantly higher and pain sensitivity was lower after the dissociation-inducing script was read compared with the neutral script. The blood oxygen level-dependent (BOLD) signal was significantly increased in the left inferior frontal gyrus (Brodmann area [BA] 9) during the presentation of the dissociation-inducing script. Regression analyses revealed positive correlations between BOLD signal and dissociative psychopathology in the left superior frontal gyrus (BA 6) and negative correlations in the right middle (BA 21) and inferior temporal gyrus (BA 20). In the subgroup of participants with comorbid PTSD, we also found increased activity in the left cingulate gyrus (BA 32) during script-driven imagery-induced dissociation, a positive correlation between dissociation scores and activity in the right and left insula (BA 13) and a negative correlation in the right parahippocampal gyrus (BA 35). LIMITATIONS: The main limitation of this pilot study is the absence of a control group. Therefore, the results may also reflect the neural correlates of non-BPD/PTSD specific dissociative states or the neural correlates of emotionally stressful or "loaded" memories. Another limitation is the uncorrected statistical level of the functional magnetic resonance imaging results. CONCLUSION: Our results showed that the script-driven imagery method is capable of inducing dissociative states in participants with BPD with and without comorbid PTSD. These states were characterized by reduced pain sensitivity and a frontolimbic activation pattern, which resembles the findings in participants with PTSD while in dissociative states.

Augmentation of antidepressants with bright light therapy in patients with comorbid depression and borderline personality disorder.

BACKGROUND: Borderline personality disorder (BPD) is typically characterized by instability and impaired behaviour, affectivity, interpersonal relations and lifestyle. The most common condition comorbid with BPD is a depressive episode. Depression is associated with severe disturbance of the circadian rhythms. This is apparent in depressive patients with BPD. Both sleep and diurnal rhythms are disturbed and the symptoms fluctuate. Bright light may be an effective in treatment of seasonal affective disorder, circadian sleep disorder and jet lag. It also improves sleep-wake patterns and behavioural disorders in hospitalized patients with Alzheimer's disease. Several studies have suggested antidepressant effects of phototherapy in non-seasonal depressive episodes. The treatment of comorbid depressive disorder and borderline personality disorder (BPD) is usually reported to be less successful than the treatment of patients without personality disorder. Studies describing the use of bright light in depressed patients with comorbid BPD have not been published so far. METHOD: The aim of this open study was to assess the effectiveness of a 6-week combined therapy with the application of bright light (10,000 lux, 6:30 to 7:30 a.m. for 6 weeks) added to SSRIs in drug-resistant depressed patients with comorbid BPD who did not respond with improvement to 6-week administration of antidepressants. The study comprised 13 female patients who met the ICD-10 diagnostic criteria for research and the DSM-IV-TR diagnostic criteria for major depression. The participants were regularly evaluated using the CGI, HAMD and MADRS scales and the BDI and BDI self-report inventories. RESULTS: According to all the assessment instruments, the application of bright white light leads to a significant improvement. However, the results must be interpreted with caution due to the open nature of the study.

Script-driven imagery of self-injurious behavior in patients with borderline personality disorder: a pilot FMRI study.

OBJECTIVE: Self-injurious behavior (SIB) is one of the most distinctive features of borderline personality disorder (BPD) and related to impulsivity and emotional dysregulation. METHOD: Female patients with BPD (n = 11) and healthy controls (n = 10) underwent functional magnetic resonance imaging while listening to a standardized script describing an act of self-injury. Experimental sections of the script were contrasted to the neutral baseline section and group-specific brain activities were compared. RESULTS: While imagining the reactions to a situation triggering SIB, patients with BPD showed significantly less activation in the orbitofrontal cortex compared with controls. Furthermore, only patients with BPD showed increased activity in the dorsolateral prefrontal cortex during this section and a decrease in the mid-cingulate while imagining the self-injurious act itself. CONCLUSION: This pattern of activation preliminary suggests an association with diminished emotion regulation, impulse control as well as with response selection and reappraisal during the imagination of SIB.

Randomized controlled trial of outpatient mentalization-based treatment versus structured clinical management for borderline personality disorder.

OBJECTIVE: This randomized controlled trial tested the effectiveness of an 18-month mentalization-based treatment (MBT) approach in an outpatient context against a structured clinical management (SCM) outpatient approach for treatment of borderline personality disorder. METHOD: Patients (N=134) consecutively referred to a specialist personality disorder treatment center and meeting selection criteria were randomly allocated to MBT or SCM. Eleven mental health professionals equal in years of experience and training served as therapists. Independent evaluators blind to treatment allocation conducted assessments every 6 months. The primary outcome was the occurrence of crisis events, a composite of suicidal and severe self-injurious behaviors and hospitalization. Secondary outcomes included social and interpersonal functioning and self-reported symptoms. Outcome measures, assessed at 6-month intervals, were analyzed using mixed effects logistic regressions for binary data, Poisson regression models for count data, and mixed effects linear growth curve models for self-report variables. RESULTS: Substantial improvements were observed in both conditions across all outcome variables. Patients randomly assigned to MBT showed a steeper decline of both self-reported and clinically significant problems, including suicide attempts and hospitalization. CONCLUSIONS: Structured treatments improve outcomes for individuals with borderline personality disorder. A focus on specific psychological processes brings additional benefits to structured clinical support. Mentalization-based treatment is relatively undemanding in terms of training so it may be useful for implementation into general mental health services. Further evaluations by independent research groups are now required.