title: Assessment of posttraumatic symptoms in patients with first-episode psychosis.
abstract: Posttraumatic stress disorder is common among patients with psychotic disorders. The present study examined the internal reliability and comparability of the Impact of Event Scale (IES) in a sample of 38 patients with first-episode psychosis and 47 controls exposed to severe physical and/or sexual abuse. The IES total score and both subscales showed high internal consistency in both groups (Cronbach's alpha coefficients of approximately 0.9 or higher). Given their equivalent trauma reporting, the lack of differences in IES scores between patients and controls seems to indicate that patients are likely to report accurately and neither exaggerate nor minimize their posttraumatic symptoms. Overall, the findings suggest that the IES can be used to assess symptoms of posttraumatic stress in patients with psychotic disorders as in other populations.
authors: Universitätsklinikum Hamburg-Eppendorf, Martinistrasse 52, Hamburg, Germany. ischaefe@uke.uni-hamburg.de
authors: Ingo
authors: I
authors: Schäfer
authors: Craig
authors: C
authors: Morgan
authors: Arsime
authors: A
authors: Demjaha
authors: Kevin
authors: K
authors: Morgan
authors: Paola
authors: P
authors: Dazzan
authors: Paul
authors: P
authors: Fearon
authors: Peter B
authors: PB
authors: Jones
authors: Gillian A
authors: GA
authors: Doody
authors: Julian
authors: J
authors: Leff
authors: Robin M
authors: RM
authors: Murray
authors: Helen L
authors: HL
authors: Fisher
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000175:diagnosis / Q000523:psychology*; D018709:Statistics, Nonparametric; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000523:psychology