Format

Send to

Choose Destination
See comment in PubMed Commons below
Psychiatry Res. 2007 Apr 15;150(3):245-53. Epub 2007 Feb 21.

A taxometric analysis of schizophrenia symptoms.

Author information

1
Psychiatric Unit of Virgen del Camino Hospital, C/ Irunlarrea 4, Pamplona E-31008, Spain. mcuestaz@cfnavarra.es

Abstract

Specific disorders within the psychosis syndrome have been proposed although no definitive validation of subtypes has been achieved. If there are subtypes of psychosis, latent discontinuity between clinical descriptors should be found. We applied for the first time taxometric analysis on characteristic schizophrenia symptoms. The sample consisted of 660 inpatients with an acute psychotic episode. Computed scores of the clinical dimensions included in the three-syndrome model of schizophrenia symptomatology were used as clinical descriptors or latent variables to be analyzed. Two taxometric analyses were used (MAXCOV and MAMBAC). Discrepancies between observed covariance curves and between the estimated base rates of indicators did not support a taxonic conjecture within psychosis based on the severity of 'Psychosis', 'Negative' and 'Disorganization' dimensions scores, which were used as indicators. However, no appropriate solution could be reached because the three clinical indicators of schizophrenia symptomatology used in this study showed a lack of consistency. The lack of a taxonic structure with symptomatological domains of psychosis suggested the existence of a dimensional solution for schizophrenia symptomatology within psychoses.

PMID:
17316823
DOI:
10.1016/j.psychres.2006.01.019
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center