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  • Title: [Reliability and construct validity of the OPD-CA axes: structure and prerequisites for treatment].
    Author: Fliedl R, Katzenschläger P.
    Journal: Neuropsychiatr; 2016 Sep; 30(3):151-157. PubMed ID: 27718052.
    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. CONCLUSION: 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.
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