title: [Reliability and construct validity of the OPD-CA axes: structure and prerequisites for treatment].
abstract: BACKGROUND
  The aim of this study was to compare the Operationalized Psychodynamic Diagnostics (OPD-CA) for children and adolescents with the modified version (OPD-CA-2) focusing on the mainly unchanged treatment conditions and the redesigned structure axis.
  
  
  METHODS
  The patient sample consisted 371 inpatient children and adolescents with psychiatric disorders from 3 to 18 years. OPD-CA and OPD-CA-2 diagnostics were routinely performed by OPD-experienced raters. Statistical calculation included Cronbach's alpha (internal consistency) and confirmatory factor analysis.
  
  
  RESULTS
  The OPD-CA-2 structure axis showed very good internal consistency (reliability) compared to the OPD-CA. We found satisfactorily good values for the treatment conditions with slightly higher average scores in the OPD-CA-2. Confirmatory factor analysis resulted in two models where the items on the OPD-CA-2 structure axis were stronger correlated than those of the OPD-CA.
  
  
  CONCLUSIONS
  The OPD-CA-2 is a reliable and valid instrument for assessing treatment conditions and psychic structure in children and adolescents. The reorganization of the structure axis and the treatment conditions in the OPD-CA-2 resulted in a measurable improvement.
authors.affiliation: Institut für Psychosoziale Medizin, Psychotherapie und Kindheitsforschung, LK Baden-Mödling, Abteilung für Kinder- und Jugendpsychiatrie und Psychotherapie Hinterbrühl, Karl Landsteiner Gesellschaft, Fürstenweg 8, 2371, Hinterbrühl, Österreich. rainer.fliedl@moedling.lknoe.at.
authors.forename: Rainer
authors.initials: R
authors.lastname: Fliedl
authors.affiliation: Institut für Psychosoziale Medizin, Psychotherapie und Kindheitsforschung, LK Baden-Mödling, Abteilung für Kinder- und Jugendpsychiatrie und Psychotherapie Hinterbrühl, Karl Landsteiner Gesellschaft, Fürstenweg 8, 2371, Hinterbrühl, Österreich.
authors.forename: Petra
authors.initials: P
authors.lastname: Katzenschläger
mesh_terms: D000293:Adolescent; D001317:Austria; D002648:Child; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000523:psychology / Q000628:therapy*; D010343:Patient Admission; D011386:Projective Techniques / Q000706:statistics & numerical data*; D011574:Psychoanalytic Theory; D011594:Psychometrics / Q000706:statistics & numerical data*; D015203:Reproducibility of Results
keywords: Operationalised Psychodynamic Diagnostics in Childhood and Adolescence (OPD-CA); Prerequisites for treatment; Psychic structure; Reliability; Validity