Evidence map›Paper›PMID 42440649›Full record

ArticleFrontiers in psychiatry2026

Improvement of personality functioning in patients with personality disorders: a comparative study of mentalization-based treatment versus non-manualized treatments.

Kjetil Bremer, Geir Pedersen, Andreas Ekberg, Katharina T E Morken, Helene A Nissen-Lie, Eileen Oftedal, Theresa Wilberg, Elfrida H Kvarstein

Abstract read
In one paragraph

Article in Frontiers in psychiatry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Kjetil BremerSection for Treatment Research, Department of research and Innovation, Division Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.
Geir PedersenSection for Treatment Research, Department of research and Innovation, Division Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.
Andreas EkbergQuality Laboratory of Psychotherapy, National Advisory Center for Substance Use and Addictive Disorders, Severe Concurrent Mental Health Disorders and Personality Disorders, Oslo University hospital, Oslo, Norway.
Katharina T E MorkenAddiction and Substance Use Clinic, Haukeland University Hospital, Bergen, Norway.
Helene A Nissen-LieDepartment of Psychology, Faculty of Social Sciences, University of Oslo, Oslo, Norway.
Eileen OftedalGroup Outpatient Clinic, Stavanger District Psychiatric Center, Division of Adult Mental Health Care, Stavanger University Hospital, Stavanger, Norway.
Theresa WilbergSection for Treatment Research, Department of research and Innovation, Division Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.
Elfrida H KvarsteinSection for Treatment Research, Department of research and Innovation, Division Mental Health and Addiction, Oslo University Hospital, Oslo, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: Among evidence-based treatments for personality disorder (PD), mentalization-based treatment (MBT) represents a manualized, long-term treatment. Both MBT and non-manualized psychotherapeutic treatments (NMT) are currently applied for patients with PDs in Norway. This clinical population is characterized by varying impairment of personality functioning (PF). Few have investigated how MBT and NMT are suited for the heterogeneity of personality problems presenting to health services and how they compare. This study aimed to investigate 1) characteristics of patients admitted to MBT versus NMT, 2) longitudinal change in PF among patients in MBT versus NMT, and 3) associations between initial PD status and outcome differences in MBT and NMT. Methods: The current study is observational, reflecting regular outpatient PD health services. Data was retrieved from a Norwegian quality registry (Network for Personality Disorders, period 2017-2024) and included all patients with information on baseline PD assessment (SCID-5-PD), treatment specification (i.e., MBT or NMT), and self-report data on PF outcome (global level of personality functioning: LPFS-BF, and specific personality problems: SIPP-SF, N = 954, N Results: Patients admitted to MBT treatment had more severe personality pathology, more often a Borderline PD (BPD) diagnosis, and a higher symptom burden compared to NMT. Treatment condition explained little longitudinal variation and improvement of all PF aspects during treatment was comparable. Effect sizes ranged from medium to large in both treatment groups. Increasing number of borderline and narcissistic PD criteria were independently associated with greater improvement in MBT versus NMT. Poorer improvement in MBT was associated with a higher number of avoidant PD (AvPD) criteria. Conclusion: Admittance to MBT versus NMT appeared largely matched to severity and type of PD. Clinically relevant improvements were found in both MBT and NMT. Improvement rates were larger in MBT for patients with BPD, more severe PD conditions, and comorbid narcissistic traits. Further development of effective treatments for AvPD is needed.

Indexed as

avoidant personality disorderborderline personality disordergroup therapymentalization based therapynon-manualized psychotherapypersonality disorderpersonality functioningpsychotherapy

Identifiers

PMID42440649
PMCPMC13333664

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.