A dimensional and categorical approach to the symptomatology of recent-onset schizophrenia

J Nerv Ment Dis. 1993 Dec;181(12):744-9. doi: 10.1097/00005053-199312000-00006.

Abstract

Sixty-five patients with recent-onset schizophrenia were assessed with two widely used symptom scales, the Brief Psychiatric Rating Scale-Expanded (BPRS-E) and the Psychiatric Assessment Scale (Manchester scale). Principal components analysis of the BPRS-E scores yielded a four-dimensional structure: positive symptoms, negative symptoms, disorganization, and depression. With the Psychiatric Assessment Scale, three dimensions were found: the positive symptoms (delusions, hallucinations) and disorganization (incoherence) appeared in one dimension. A categorical analysis resulted in predominantly positive, negative, and disorganized clusters, but more than half of the sample could not be allocated to any of these groups.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Cluster Analysis
  • Delusions / classification
  • Delusions / diagnosis
  • Depressive Disorder / classification
  • Depressive Disorder / diagnosis
  • Discriminant Analysis
  • Factor Analysis, Statistical
  • Female
  • Hallucinations / classification
  • Hallucinations / diagnosis
  • Hospitalization
  • Humans
  • Male
  • Models, Psychological
  • Psychiatric Status Rating Scales / statistics & numerical data*
  • Schizophrenia / classification
  • Schizophrenia / diagnosis*
  • Schizophrenic Psychology*