Factor analysis of the CORE measure of psychomotor disturbance in psychotic depression: Findings from the STOP-PD II study. Academic Article uri icon

Overview

abstract

  • The CORE instrument is commonly used to measure psychomotor disturbance. We examined the factor structure of the CORE in 266 adults with an acute episode psychotic depression, a disorder with a high rate of psychomotor disturbance. Exploratory factor analysis identified a two-factor solution: Factor 1 corresponded to the CORE's retardation and non-interactiveness items and Factor 2 corresponded to its agitation items. Internal consistency was excellent for Factor 1 but questionable for Factor 2. These findings suggest that the CORE's retardation and non-interactiveness items should be combined in one subscale when assessing patients with an acute episode of psychotic depression.

publication date

  • May 21, 2022

Research

keywords

  • Bipolar Disorder
  • Depressive Disorder, Major
  • Psychotic Disorders

Identity

Scopus Document Identifier

  • 85130580614

Digital Object Identifier (DOI)

  • 10.1016/j.psychres.2022.114648

PubMed ID

  • 35623239

Additional Document Info

volume

  • 314