title: The course of posttraumatic stress in children: examination of recovery trajectories following traumatic injury.
abstract: OBJECTIVE
  Group-based trajectory modeling was used to identify patterns of posttraumatic stress symptom (PTSS) in children 6-16 years following accidental injury. The aims were to: (a) identify probable groups of children following distinct trajectories, and (b) identify risk factors affecting the probability of group membership.
  
  
  METHODS
  Children's Impact of Events Scale (n = 190) was used to assess PTSS up to 2 years post injury. Age, gender, type of injury, and preinjury behavior were assessed as risk factors.
  
  
  RESULTS
  Three distinct trajectory groups were identified: resilient (57%), elevated stress symptoms which recovered quickly (33%), and chronic (10%). Younger children were more likely to be in the recovery group. Those with serious injuries were more likely to be in the chronic group. Preinjury child behavior problems were predictive of recovery and high chronic symptoms.
  
  
  CONCLUSIONS
  Identification of distinct PTSS trajectory groups has implications for understanding the course and treatment of PTSS in children.
authors.affiliation: Centre of National Research on Disability and Rehabilitation, Medical School, The University of Queensland, Herston Road, Herston 4006, Queensland, Australia. r.lebrocque@uq.edu.au
authors.forename: Robyne M
authors.initials: RM
authors.lastname: Le Brocque
authors.forename: Joan
authors.initials: J
authors.lastname: Hendrikz
authors.forename: Justin A
authors.initials: JA
authors.lastname: Kenardy
mesh_terms: D000059:Accidents / Q000523:psychology*; D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D008016:Life Change Events; D008297:Male; D016017:Odds Ratio; D012307:Risk Factors; D013313:Stress Disorders, Post-Traumatic / Q000523:psychology*; D011795:Surveys and Questionnaires; D014947:Wounds and Injuries / Q000523:psychology*