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Assessing axis II disorders by informant interview

D P Bernstein1, C Kasapis, A Bergman

  • 1Bronx VA Medical Center, Psychiatry Service 116A, NY 10468, USA.

Journal of Personality Disorders
|July 1, 1997
PubMed
Summary
This summary is machine-generated.

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Comparing patient interviews with informant data for personality disorder diagnoses revealed poor agreement. Informant input, however, aided in resolving some diagnostic discrepancies, enhancing clinical refinement.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Psychopathology

Background:

  • Personality disorder research often relies on direct patient assessment.
  • The comparison between patient-derived and informant-derived diagnostic data is underexplored.
  • Understanding informant data's role is crucial for accurate personality disorder diagnosis.

Purpose of the Study:

  • To assess diagnostic agreement between patient and informant interviews for personality disorders.
  • To evaluate the contribution of each data source to consensus diagnoses.
  • To explore the utility of informant data in refining personality disorder assessments.

Main Methods:

  • Sixty-two psychiatric patients underwent direct assessment using the Structured Interview for DSM-III Personality Disorders (SIDP).

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  • Patients nominated an informant (family/friend) interviewed using the same SIDP instrument.
  • Consensus diagnoses were established by a senior clinician reviewing all available data, with informant interviews blinded when possible.
  • Main Results:

    • Diagnostic agreement between patient and informant reports for personality disorders was poor.
    • Patient-derived information generally received more weight in consensus diagnoses.
    • Informant data contributed to resolving approximately 25% of diagnostic disagreements.
    • Inclusion of informant data did not reveal increased psychopathology compared to previous findings.

    Conclusions:

    • Supplementing direct patient interviews with informant data can improve the resolution of certain personality disorder diagnoses.
    • The practical value of informant interviews depends on balancing the benefits of diagnostic refinement against associated costs.
    • Further research may clarify the optimal use of informant data in clinical settings.