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Defining remission: proposed criteria and rationale for consensus

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New advances in the understanding of schizophrenia etiology, course, and treatment have increased interest on the part of patients, families, advocates, and professionals in the development of consensus-defined standards for clinical status and improvement, including illness remission and recovery. As demonstrated in the area of mood disorders, such standards provide greater clarity around treatment goals, as well as an improved framework for the design and comparison of investigational trials and the subsequent evaluation of interventional effectiveness. Unlike mood disorders, however, the novel application of the concept of standard outcome criteria to schizophrenia must reflect the wide heterogeneity of chronic psychotic illness course and outcome, as well as the variable effects of different treatments on schizophrenia symptomatology. As an initial step in developing operational criteria, an expert Working Group reviewed available definitions and assessment instruments to provide a conceptual framework for symptomatic, functional and cognitive domains in schizophrenia as they relate to remission of illness. The first consensus-based operational criteria for symptomatic remission in schizophrenia is based on distinct thresholds for reaching and maintaining improvement, as opposed to change criteria, allowing for alignment with traditional concepts of remission in both psychiatric and non-psychiatric illness. This innovative approach for standardizing the definition for outcome in schizophrenia also calls for further examination of its validity and utility, as well as the potential for future refinement, particularly in relation to the growing characterization of cognitive dysfunction in psychotic illness. These criteria should facilitate research and support a positive, longer-term approach regarding outcome for patients with schizophrenia.

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Correspondence to Nancy Andreasen.

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Open Access This article is published under license to BioMed Central Ltd. This is an Open Access article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Andreasen, N. Defining remission: proposed criteria and rationale for consensus. Ann Gen Psychiatry 5, S29 (2006) doi:10.1186/1744-859X-5-S1-S29

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Keywords

  • Schizophrenia
  • Mood Disorder
  • Operational Criterion
  • Cognitive Domain
  • Assessment Instrument