Confirmatory factor analysis of the delirium rating scale revised-98 (DRS-r98)

Steven Thurber, Yasuhiro Kishi, Paula T. Trzepacz, Jose G. Franco, David J. Meagher, Yanghyun Lee, Jeong Lan Kim, Leticia M. Furlanetto, Daniel Negreiros, Ming Chyi Huang, Chun Hsin Chen, Jacob Kean, Maeve Leonard

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Principal components analysis applied to the Delirium Rating Scale-Revised-98 contributes to understanding the delirium construct. Using a multisite pooled international delirium database, the authors applied confirmatory factor analysis to Delirium Rating Scale-Revised-98 scores from 859 adult patients evaluated by delirium experts (delirium, N=516; nondelirium, N=343). Confirmatory factor analysis found all diagnostic features and core symptoms (cognitive, language, thought process, sleep-wake cycle, motor retardation), except motor agitation, loaded onto factor 1. Motor agitation loaded onto factor 2 with noncore symptoms (delusions, affective lability, and perceptual disturbances). Factor 1 loading supports delirium as a single construct, but when accompanied by psychosis, motor agitation’s role may not be solely as a circadian activity indicator.

Original languageEnglish
Pages (from-to)e122-e127
JournalJournal of Neuropsychiatry and Clinical Neurosciences
Issue number2
Publication statusPublished - 2015

ASJC Scopus subject areas

  • General Medicine


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