Factor Analysis of the Colombian Translation of the Delirium Rating Scale (DRS), Revised–98

BackgroundThe phenomenology of delirium needs further elucidation using validated tools.ObjectiveThe authors sought to derive valid factors from the Delirium Rating Scale (DRS), Revised –98.MethodA factor analysis of the DRS-R–98 was performed among 161 medicalsurgical patients.ResultsScores ranged from 0 to 7 in 120 patients (74.53%; no delirium), 8 to 13 in 19 (11.80%; subclinical/prodromal delirium), and ≥14 in 22 (13.66%; delirium). The DSM-IV–TR delirium incidence was 19.87%. The first two rotated factors explained 63.37% of the variance and may correspond to Cognition and Psychosis/Agitation factors. The dimension of motor retardation loaded with cognitive items. Motor agitation and retardation clustered with inattention, which is the cardinal symptom of delirium.ConclusionThe DRS-R–98 has good construct validity in this Latino population.