title: A new data-based motor subtype schema for delirium.
abstract: The authors sought to validate a new approach to motor subtyping in delirium based on data from a controlled comparison of items from three existing psychomotor schema combined into the Delirium Motoric Checklist. Principal components analysis of the Delirium Motoric Checklist identified two factors that correlated significantly with independently assessed motor agitation and retardation. Symptoms loading at >0.65 were extracted to form subtype criteria composed of four hyperactive items and seven hypoactive items which, when applied to the delirious population, suggested a cutoff of two items for subtypes. This new scale is derived from existing approaches but is more concise, focused on motor disturbances, and validated against nondelirious comparison subjects and independently rated motor disturbance.
authors.affiliation: Department of Health Systems Research, University of Limerick, Limerick, Ireland. meaghermob@eircom.net
authors.forename: David
authors.initials: D
authors.lastname: Meagher
authors.forename: Maria
authors.initials: M
authors.lastname: Moran
authors.forename: Bangaru
authors.initials: B
authors.lastname: Raju
authors.forename: Maeve
authors.initials: M
authors.lastname: Leonard
authors.forename: Sinead
authors.initials: S
authors.lastname: Donnelly
authors.forename: Jean
authors.initials: J
authors.lastname: Saunders
authors.forename: Paula
authors.initials: P
authors.lastname: Trzepacz
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003071:Cognition / Q000502:physiology; D003430:Cross-Sectional Studies; D003693:Delirium / Q000145:classification* / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D009369:Neoplasms / Q000150:complications; D010166:Palliative Care; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D015203:Reproducibility of Results; D012720:Severity of Illness Index