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Patterns of premorbid functioning in first-episode psychosis: initial presentation.

Jean Addington1, Sarah van Mastrigt, Donald Addington

  • 1Department of Psychiatry, University of Calgary, Calgary, AB, Canada. jean_addington@camh.net

Schizophrenia Research
|May 27, 2003
PubMed
Summary

Premorbid functioning in early psychosis predicts outcomes. Identifying distinct patterns, such as deteriorating functioning, reveals links to increased negative symptoms and social impairment in individuals with first-episode psychosis.

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Neuroscience

Background:

  • Premorbid functioning, the period before the onset of psychosis, is a critical factor influencing outcomes in individuals with first-episode psychosis.
  • Previous research suggests a link between poorer premorbid functioning and worse prognosis, but specific patterns require further elucidation.

Purpose of the Study:

  • To investigate and categorize different patterns of premorbid functioning in a sample of individuals with first-episode psychosis.
  • To examine the relationship between identified premorbid functioning patterns and clinical/functional outcomes at the early stages of psychosis.

Main Methods:

  • A sample of 306 individuals admitted to an early-psychosis program was assessed for premorbid functioning.
  • Cluster analysis was employed to identify distinct patterns of premorbid functioning.

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  • Subsequent analyses compared clinical and functional outcomes across identified clusters.

    • Main Results:

    • Four distinct patterns of premorbid functioning were identified: stable-good, stable-moderate, deteriorating, and poor-deteriorating.
    • The deteriorating and poor-deteriorating groups exhibited significantly more negative symptoms and poorer social functioning compared to the stable-good group.
    • Evidence suggests poorer cognitive functioning in the deteriorating and poor-deteriorating groups, with the deteriorating group also showing increased positive symptoms.

    Conclusions:

    • Premorbid functioning in first-episode psychosis can be categorized into distinct patterns, impacting initial presentation and outcomes.
    • Individuals with poor premorbid social and interpersonal functioning are likely to present with greater social impairment and negative symptoms.
    • These findings underscore the importance of assessing premorbid functioning for early intervention and tailored treatment strategies in psychosis.