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Research article
Nikolaus Kleindienst
Corresponding Author
ORCiD: https://orcid.org/0000-0002-1696-2488
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Background The Borderline Symptom List (BSL-23) is a well-established self-rating instrument to assess the severity of borderline typical psychopathology. However, a classification of severity levels for the BSL-23 is missing.
Methods Data from 1.090 adults were used to develop a severity classification for the Borderline Symptom List (BSL-23). The severity grading was based on the distribution of the BSL-23 in 241 individuals with a diagnosis of BPD. Data from three independent samples were used to validate the previously defined severity grades.
These validation samples included a group of treatment seeking patients with a diagnosis of BPD (n=317), a sample of individuals with mental illnesses other than BPD (n=176), and a healthy control sample (n=356). The severity grades were validated from comparisons with established assessment instruments such as the International Personality Disorders Examination, the Structured Clinical Interview for DSM-IV, the global severity index of the Symptom Checklist (GSI, SCL-90), the Global Assessment of Functioning (GAF), and the Beck Depression Inventory (BDI-II).
Results Six grades of symptom severity were defined for the BSL-23 mean score: none or low: 0-0.3; mild: 0.3-0.7; moderate: 0.7-1.7; high: 1.7-2.7; very high: 2.7-3.5; and extremely high: 3.5-4. These grades received consistent empirical support from the independent instruments and samples. For instance, individuals with a severity grade of none or low were virtually free from diagnostic BPD-criteria, had a GSI below the normative population, and a high level of global functioning corresponding to few or no symptoms. Severity grades indicating high to extremely high levels of BPD symptoms were observed at a much higher rate in treatment-seeking patients (70.0%) than in clinical controls (17.6%) and healthy controls (0.0%). The BSL-23 score that best separated treatment-seeking BPD patients and clinical controls was 1.50, whereas the clearest discrimination of BPD patients and healthy controls was found at a score of 0.64.
Conclusions The grades of BPD-specific symptom severity derived from the distribution of the BSL-23 scores received consistent empirical validation from established assessments for psychopathology. Future studies should expand this validation by including additional instruments e.g., to assess self-esteem, loneliness, connectedness, and quality of life.
Keywords
Assessment · Borderline personality disorder · Illness severity
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Received 09 Mar, 2020
Editorial decision: Major revision
On 09 Mar, 2020
Reviewer #2 agreed
On 02 Mar, 2020
Reviewer #1 agreed
On 17 Feb, 2020
Reviewers invited
Invitations sent on 12 Feb, 2020
Editor assigned
On 07 Feb, 2020
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On 06 Feb, 2020
Editor invited
On 06 Feb, 2020
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On 31 Jan, 2020
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Subject Areas
Psychiatry
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This preprint is under consideration at Borderline Personality Disorder and Emotion Dysregulation. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
Nikolaus Kleindienst
Corresponding Author
ORCiD: https://orcid.org/0000-0002-1696-2488
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 2
Posted 23 Apr, 2020
No community comments so far
Editor assigned
On 16 Apr, 2020
Submission checks complete
On 15 Apr, 2020
Editor invited
On 15 Apr, 2020
No comments provided
Review #2 received
Received 09 Mar, 2020
Review #1 received
Received 09 Mar, 2020
Editorial decision: Major revision
On 09 Mar, 2020
Reviewer #2 agreed
On 02 Mar, 2020
Reviewer #1 agreed
On 17 Feb, 2020
Reviewers invited
Invitations sent on 12 Feb, 2020
Editor assigned
On 07 Feb, 2020
Submission checks complete
On 06 Feb, 2020
Editor invited
On 06 Feb, 2020
First submitted
On 31 Jan, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Psychiatry
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background The Borderline Symptom List (BSL-23) is a well-established self-rating instrument to assess the severity of borderline typical psychopathology. However, a classification of severity levels for the BSL-23 is missing.
Methods Data from 1.090 adults were used to develop a severity classification for the Borderline Symptom List (BSL-23). The severity grading was based on the distribution of the BSL-23 in 241 individuals with a diagnosis of BPD. Data from three independent samples were used to validate the previously defined severity grades.
These validation samples included a group of treatment seeking patients with a diagnosis of BPD (n=317), a sample of individuals with mental illnesses other than BPD (n=176), and a healthy control sample (n=356). The severity grades were validated from comparisons with established assessment instruments such as the International Personality Disorders Examination, the Structured Clinical Interview for DSM-IV, the global severity index of the Symptom Checklist (GSI, SCL-90), the Global Assessment of Functioning (GAF), and the Beck Depression Inventory (BDI-II).
Results Six grades of symptom severity were defined for the BSL-23 mean score: none or low: 0-0.3; mild: 0.3-0.7; moderate: 0.7-1.7; high: 1.7-2.7; very high: 2.7-3.5; and extremely high: 3.5-4. These grades received consistent empirical support from the independent instruments and samples. For instance, individuals with a severity grade of none or low were virtually free from diagnostic BPD-criteria, had a GSI below the normative population, and a high level of global functioning corresponding to few or no symptoms. Severity grades indicating high to extremely high levels of BPD symptoms were observed at a much higher rate in treatment-seeking patients (70.0%) than in clinical controls (17.6%) and healthy controls (0.0%). The BSL-23 score that best separated treatment-seeking BPD patients and clinical controls was 1.50, whereas the clearest discrimination of BPD patients and healthy controls was found at a score of 0.64.
Conclusions The grades of BPD-specific symptom severity derived from the distribution of the BSL-23 scores received consistent empirical validation from established assessments for psychopathology. Future studies should expand this validation by including additional instruments e.g., to assess self-esteem, loneliness, connectedness, and quality of life.
Figure 1
Figure 2
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