Cited by 61Personality Disorders and PsychopathologyPersonality Traits and PsychologyMental Health Research Topics

Major depression and dimensional representations of DSM-IV personality disorders: a population-based twin study

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Reichborn-Kjennerud, T., Czajkowski, N., Røysamb, E., Ørstavik, R. E., Neale, M. C., Torgersen, S., Kendler, K. S.·2010·Psychological Medicine

Abstract

Background: Major depressive disorder (MDD) co-occurs frequently with personality disorders (PDs). The extent to which this results from shared genetic or environmental risk factors remains uncertain. Method: Young adult twins (n=2801) from the population-based Norwegian Institute of Public Health Twin Panel were assessed at personal interview for DSM-IV lifetime MDD and the 10 Axis II PDs. The relationship between MDD and dimensional representations of all PDs was explored by stepwise logistic regression. Multivariate Cholesky twin models were fitted using the Mx program, and genetic and environmental correlations were estimated. Results: Dimensional representations of borderline (BPD), avoidant (AVPD) and paranoid personality disorder (PPD) were independently and significantly associated with increased risk for MDD. Multivariate twin modeling indicated that one latent factor accounted for the genetic covariance between MDD and the three PDs. The genetic correlations between MDD and dimensional representations of BPD, AVPD and PPD were +0.56, +0.22 and +0.40 respectively. No sex differences or shared environmental effects were found. The structure of the individual-specific environmental factors influencing MDD and the three PDs were similar to the genetic factors but the environmental correlations were lower: +0.39, +0.23 and +0.27 respectively. Conclusions: There is substantial overlap between liability factors for MDD and BPD from cluster B, PPD from cluster A and AVPD from cluster C. The vulnerability to general PD pathology and MDD seem to be closely related. The patterns of co-morbidity observed between diverse psychiatric disorders might result from just a few liability factors.

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  • Adjusting for mood and anxiety disorders may be overly conservative because personality disorder symptoms overlap with anxiety and depression, potentially underestimating the true effects of personality disorders.

    “The symptoms might therefore work as mediators instead of confounders, making the adjustments overly conservative and underestimating the true effects of PDs.”
  • Personality disorders are highly co-morbid with anxiety and depression, and these disorders are known to be associated with increased risk of disability pensioning.

    “PDs are highly co-morbid with anxiety and depression [35–38], and these disorders are known to be associated with an increased risk of disability pensioning [3–6].”

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  1. Skodol AE Stout RL McGlashan TH Grilo CM Gunderson JG Shea MT Morey LC Zanarini MC Dyck IR Oldham JM Co-occurrence of mood and personality disorders: a report from the Collaborative Longitudinal Personality Disorders Study (CLPS) Depression and Anxiety 1999 10 175 182 10690579

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Authors
Reichborn-Kjennerud, T., Czajkowski, N., Røysamb, E., Ørstavik, R. E., Neale, M. C., Torgersen, S., & Kendler, K. S.
Affiliations
  • Norwegian Institute of Public Health (NO)
  • Virginia Commonwealth University (US)
  • University of Oslo (NO)
Venue
Psychological Medicine
Published
2009-11-17
Volume
40
Issue
9
Pages
1475-1484
ISSN
  • 0033-2917 (ISSN-L)
  • 1469-8978
OpenAlex
W1995336284
Cited by
61
References
45
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 1 · 2020: 7 · 2019: 5 · 2018: 4 · 2017: 6 · 2016: 3 · 2015: 5 · 2014: 8 · 2013: 4 · 2012: 10
FWCI
3.90
Type
journal article
Language
en
Open access
Locations
  • Psychological Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (MH-068643, R01MH068643, R01MH065322, MH 65322)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Personality Disorders and Psychopathology
  • Social Sciences › Psychology › Clinical Psychology › Personality Traits and Psychology
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Mental Health Research Topics
Keywords
major depressive disorder, personality disorders, borderline personality disorder, avoidant personality disorder, paranoid personality disorder, genetic correlation, environmental correlation, shared liability, comorbidities, twin studies
MeSH terms
Adult, Borderline Personality Disorder, Depressive Disorder, Major, Major Depressive Disorder, Female, Humans, Male, Norway, Paranoid Personality Disorder, Personality Disorders, Risk Factors, Comorbidity, Prevalence, Multivariate Analysis, Logistic Models, Diagnostic and Statistical Manual of Mental Disorders

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