title: Validation of the French version of the Child Post-Traumatic Stress Reaction Index: psychometric properties in French speaking school-aged children.
abstract: BACKGROUND
  Although the reliable and valid Child Post-Traumatic Stress Reaction Index (CPTS-RI) is a widely used measure of posttraumatic stress disorder (PTSD) symptoms in children, it has not been validated in French-speaking populations. The present study aims to assess the psychometric properties of the CPTS-RI in three samples of French-speaking school-children.
  
  
  METHODS
  Data was obtained from three samples. Sample 1 was composed of 106 children (mean (SD) age = 11.7(0.7), 50% females) victims of an industrial disaster. Sample 2 was composed of 50 children (mean (SD) age = 10.8(2.6), 44% females) who had received an orthopaedic surgical procedure after an accident. Sample 3 was composed of 106 children (mean (SD) age = 11.7(2.2), 44% females) admitted to an emergency department after a road traffic accident. We tested internal consistency using Cronbach's alpha. We examined test-retest reliability using intraclass correlation coefficient. In order to assess the convergent validity of the French version of the CPTS-RI and the Clinician Administered PTS Scale-Child and Adolescent (CAPS-CA), spearman-correlation coefficient was computed. To verify the validity of the cut-off scores, a ROC curve was constructed which evaluated the sensitivity and specificity of each score compared to the diagnosis with the CAPS-CA. We also used principal components analysis with varimax rotation to study the structure of the French version of the CPTS-RI.
  
  
  RESULTS
  Cronbach's alpha coefficient was 0.87 for the French version of the CPTS-RI. Two-week test-retest intraclass correlation coefficient (n = 30) was 0.67. The French version of the CPTS-RI was well correlated with the CAPS-CA (r = 0.76, p < 0.001). Taking the CAPS-CA as the diagnostic reference, with a diagnostic cut-off of >24 for the CPTS-RI, the sensitivity and specificities were 100% and 62.6%, respectively. The French version of the CPTS-RI demonstrated a three-factor structure.
  
  
  CONCLUSIONS
  The CPTS-RI is reliable and valid in French-speaking children.
authors.affiliation: Institut National de la Santé et de la Recherche Médicale Unité Mixte de Recherche 1094, Tropical Neuroepidemiology, Limoges, France; Univ Limoges, School of Medicine, Institute of Neuroepidemiology and Tropical Neurology, Centre National de la Recherche Scientifique FR 3503 GEIST, Limoges, France; Institut National de la Santé et de la Recherche Médicale Unité Mixte de Recherche 1027, Université Paul Sabatier, Toulouse, France; Pôle Hospitalo-Universitaire de Psychiatrie de l'enfant et de l'adolescent, Centre Hospitalier Esquirol, Limoges, France.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Olliac
authors.affiliation: Université de Toulouse, Université Paul Sabatier, Laboratoire du Stress Traumatique (LST - EA 4560) Centre Hospitalier Universitaire de Toulouse, Hôpital Casselardit, Toulouse, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Birmes
authors.affiliation: Université de Toulouse, Université Paul Sabatier, Laboratoire du Stress Traumatique (LST - EA 4560) Centre Hospitalier Universitaire de Toulouse, Hôpital Casselardit, Toulouse, France; Massachusetts General Hospital & Harvard Medical School, Boston, Massachusetts, United States of America.
authors.forename: Eric
authors.initials: E
authors.lastname: Bui
authors.affiliation: Université de Toulouse, Université Paul Sabatier, Laboratoire du Stress Traumatique (LST - EA 4560) Centre Hospitalier Universitaire de Toulouse, Hôpital Casselardit, Toulouse, France.
authors.forename: Charlotte
authors.initials: C
authors.lastname: Allenou
authors.affiliation: McGill University and Douglas Mental Health University Institute, Montréal, Quebec, Canada.
authors.forename: Alain
authors.initials: A
authors.lastname: Brunet
authors.affiliation: Unité des Urgences Pédiatriques, Hôpital des Enfants, Centre Hospitalier Universitaire de Toulouse, Toulouse, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Claudet
authors.affiliation: Service Chirurgie Orthopédique, Traumatologique et Plastique, Hôpital des Enfants, Centre Hospitalier Universitaire de Toulouse, Toulouse, France.
authors.forename: Jérôme
authors.initials: J
authors.lastname: Sales de Gauzy
authors.affiliation: Institut National de la Santé et de la Recherche Médicale Unité Mixte de Recherche 1027, Université Paul Sabatier, Toulouse, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Grandjean
authors.affiliation: Institut National de la Santé et de la Recherche Médicale Unité Mixte de Recherche 1027, Université Paul Sabatier, CHU de Toulouse, Hôpital La Grave, Toulouse, France.
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Raynaud
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D005602:France; D006801:Humans; D007802:Language; D008297:Male; D011594:Psychometrics / Q000379:methods*; D012372:ROC Curve; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000453:epidemiology; D011795:Surveys and Questionnaires