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Related Experiment Videos

Early intervention in schizophrenia: a critique.

Richard Warner1

  • 1Mental Health Center of Boulder County, University of Colorado, Boulder, CO, USA. dick_warner@compuserve.com

Epidemiologia E Psichiatria Sociale
|February 15, 2003
PubMed
Summary

Early intervention in psychosis has risks and benefits. Current screening methods for at-risk individuals are inaccurate, potentially leading to mislabeling and unnecessary treatment, with limited public health impact.

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Area of Science:

  • Psychiatry and Mental Health
  • Clinical Psychology
  • Public Health

Background:

  • Two primary early intervention strategies for psychosis are proposed: intervention before illness onset in at-risk individuals and intervention after psychosis onset.
  • The historical context of early intervention in psychosis spans over two centuries, with theoretical support often linked to the duration of untreated psychosis (DUP).

Purpose of the Study:

  • To critically examine the risks and potential benefits of two distinct early intervention approaches in psychosis.
  • To evaluate the efficacy and limitations of current screening measures for identifying individuals at risk of psychosis.

Main Methods:

  • Analysis of published data.
  • Application of Bayes probability theorem to assess risks and benefits.

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  • Evaluation of screening measure accuracy and public health impact.

    • Main Results:

    • The association between DUP and poor outcome may be confounded by expected good outcomes in recent-onset psychosis.
    • Current screening tools for at-risk individuals lack adequate accuracy, even when targeting clinic-referred patients.
    • Widespread screening may have minimal impact on schizophrenia incidence but significant negative consequences for misdiagnosed individuals.

    Conclusions:

    • The risks and benefits of pre-onset versus post-onset intervention in psychosis differ significantly.
    • Early intervention in established psychosis may offer benefits, but risks unnecessary treatment for those with brief, good-prognosis episodes.
    • Inaccurate labeling of individuals as high-risk for psychosis can lead to considerable negative impacts.