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Psychopathology. 2004 May-Jun;37(3):110-7. Epub 2004 May 18.

Classification of functional psychoses and its implication for prognosis: comparison between ICD-10 and DSM-IV.

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1
Department of Psychiatry, Ludwig-Maximilians University, Munich, Germany. markus.jaeger@psy.med.uni-muenchen.de

Abstract

BACKGROUND:

The aim was to examine the agreement and differences between ICD-10 and DSM-IV in the classification of functional psychoses.

SAMPLING AND METHODS:

In a sample of 218 first-hospitalised patients, ICD-10 diagnoses were compared with DSM-IV diagnoses. Functional psychoses of both diagnostic systems were classified into the four diagnostic groups schizophrenia, transient/episodic psychoses, delusional disorders and affective disorders. Based on information from a 15-year follow-up, it was examined which course is associated with each diagnostic group.

RESULTS:

Although in ICD-10 there was a higher frequency of schizophrenia and a lower one of affective disorders, a high agreement between ICD-10 and DSM-IV (kappa value of 0.82) was found. In both diagnostic systems, transient/episodic psychoses and affective disorders were mainly associated with a non-chronic course and schizophrenia was mainly associated with a chronic one. Nevertheless, several patients with transient/episodic psychoses showed a chronic course (ICD-10: 10%, DSM-IV: 15%) and more than one third of patients with schizophrenia a non-chronic one (ICD-10: 40%, DSM-IV: 33%).

CONCLUSIONS:

In the cross-sectional assessment, there is a high diagnostic agreement between ICD-10 and DSM-IV. With respect to the long-term course, the delimitation of transient/episodic psychoses from schizophrenia was neither completely achieved by ICD-10 nor by DSM-IV.

PMID:
15153742
DOI:
10.1159/000078609
[Indexed for MEDLINE]
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