title: Testing the dimensional structure of DSM-5 posttraumatic stress disorder symptoms in a nonclinical trauma-exposed adolescent sample.
abstract: BACKGROUND
  The current study investigated the underlying dimensionality of DSM-5 posttraumatic stress disorder (PTSD) symptoms in a trauma-exposed Chinese adolescent sample using a confirmatory factor analytic (CFA) alternative model approach.
  
  
  METHODS
  The sample consisted of 559 students (242 females and 314 males) ranging in age from 12 to 18 years (M = 15.8, SD = 1.3). Participants completed the PTSD Checklist for DSM-5, the Major Depression Disorder and Panic Disorder subscales of the Revised Children's Anxiety and Depression Scale, and the Aggressive Behavior subscale of the Youth Self-Report.
  
  
  RESULTS
  Confirmatory factor analytic results indicated that a seven-factor model comprised of intrusion, avoidance, negative affect, anhedonia, externalizing behavior, anxious arousal, and dysphoric arousal factors emerged as the best-fitting model. Further analyses showed that the external measures of psychopathological variables including major depressive disorder, panic disorder, and aggressive behavior were differentially associated with the resultant factors.
  
  
  CONCLUSIONS
  These findings support and extend previous findings for the newly refined seven-factor hybrid model, and carry clinical and research implications for trauma-related psychopathology.
authors.affiliation: Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.|University of Chinese Academy of Sciences, Beijing, China.|Center for Disease Control and Prevention of Shijingshan District, Beijing, China.
authors.forename: Liyong
authors.initials: L
authors.lastname: Liu
authors.affiliation: Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
authors.forename: Li
authors.identifier: http://orcid.org/0000-0002-1459-3412
authors.initials: L
authors.lastname: Wang
authors.affiliation: Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.|University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Chengqi
authors.initials: C
authors.lastname: Cao
authors.affiliation: Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.|University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Yulan
authors.initials: Y
authors.lastname: Qing
authors.affiliation: Psychology Research Institute, Ulster University, Coleraine, UK.
authors.forename: Cherie
authors.initials: C
authors.lastname: Armour
mesh_terms: D000293:Adolescent; D002648:Child; D002681:China; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D013313:Stress Disorders, Post-Traumatic / Q000145:classification*
keywords: China; DSM-5; Posttraumatic stress disorder; adolescents; confirmatory factor analysis