title: Peritraumatic dissociation and posttraumatic stress disorder following motor vehicle accidents.
abstract: OBJECTIVE
  This study examined the relation between peritraumatic dissociation and posttraumatic stress disorder (PTSD) in victims of motor vehicle accidents.
  
  
  METHODS
  Victims of serious motor vehicle accidents (N = 122) were assessed for peritraumatic dissociation with the Peritraumatic Dissociative Experiences Questionnaire-Rater Version and followed longitudinally to assess acute and chronic PTSD (1 month and 3 months after the accident) with the Structured Clinical Interview for DSM-III-R.
  
  
  RESULTS
  The most common peritraumatic dissociative symptom was time distortion (56.6%). Subjects with peritraumatic dissociation were 4.12 times more likely than those without to have acute PTSD and 4.86 times more likely to develop chronic PTSD. The risk was independent of risk associated with the presence of PTSD before the accident.
  
  
  CONCLUSIONS
  Peritraumatic dissociation is common following motor vehicle accidents and is a risk factor for acute and chronic PTSD, independent of risk associated with prior PTSD.
authors.affiliation: Department of Psychiatry, Uniformed Services University of the Health Sciences, F. Edward Hébert School of Medicine, Bethesda, MD 20814-4799, USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Ursano
authors.forename: C S
authors.initials: CS
authors.lastname: Fullerton
authors.forename: R S
authors.initials: RS
authors.lastname: Epstein
authors.forename: B
authors.initials: B
authors.lastname: Crowley
authors.forename: K
authors.initials: K
authors.lastname: Vance
authors.forename: T C
authors.initials: TC
authors.lastname: Kao
authors.forename: A
authors.initials: A
authors.lastname: Baum
mesh_terms: D000063:Accidents, Traffic / Q000523:psychology / Q000706:statistics & numerical data*; D000293:Adolescent; D000328:Adult; D004213:Dissociative Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D008016:Life Change Events; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data; D012307:Risk Factors; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology