title: PTSD in ICD-10 and proposed ICD-11 in elderly with childhood trauma: prevalence, factor structure, and symptom profiles.
abstract: BACKGROUND
  The proposal for ICD-11 postulates major changes for posttraumatic stress disorder (PTSD) diagnosis, which needs investigation in different samples.
  
  
  OBJECTIVE
  To investigate differences of PTSD prevalence and diagnostic agreement between ICD-10 and ICD-11, factor structure of proposed ICD-11 PTSD, and diagnostic value of PTSD symptom severity classes.
  
  
  METHODS
  Confirmatory factor analysis and latent profile analysis were used on data of elderly survivors of childhood trauma (>60 years, N=399).
  
  
  RESULTS
  PTSD rates differed significantly between ICD-10 (15.0%) and ICD-11 (10.3%, z=2.02, p=0.04). Unlike previous research, a one-factor solution of ICD-11 PTSD had the best fit in this sample. High symptom profiles were associated with PTSD in ICD-11.
  
  
  CONCLUSIONS
  ICD-11 concentrates on PTSD's core symptoms and furthers clinical utility. Questions remain regarding the tendency of ICD-11 to diagnose mainly cases with severe symptoms and the influence of trauma type and participant age on the factor structure.
authors.affiliation: Faculty of Psychology, University of Vienna, Vienna, Austria.
authors.forename: Tobias M
authors.initials: TM
authors.lastname: Glück
authors.affiliation: Faculty of Psychology, University of Vienna, Vienna, Austria; matthias.knefel@univie.ac.at.
authors.forename: Matthias
authors.initials: M
authors.lastname: Knefel
authors.affiliation: Faculty of Psychology, University of Vienna, Vienna, Austria.
authors.forename: Ulrich S
authors.initials: US
authors.lastname: Tran
authors.affiliation: Faculty of Psychology, University of Vienna, Vienna, Austria.
authors.forename: Brigitte
authors.initials: B
authors.lastname: Lueger-Schuster
keywords: Latent class analysis; World War II; childhood abuse; institutional abuse; long term consequences; trauma severity