Il progetto OPD-Milano (Diagnosi Psicodinamica Operazionalizzata) : studio di attendibilità tra giudici nella versione italiana

Goals: The present study introduces the Milan-OPD research project. The project, focused on the use of the OPD Italian version, was born by the requirement to assign the more adequate treatment to a specific patient, a requirement also emerging in the recent literature. We are here presenting the first step of this project, the inter-rater reliability study in the OPD Italian version. Methods: Two independent and OPD trained groups evaluated the interview transcriptions of 20 consecutive not-selected patients, coming for a psychiatric consultation conducted following OPD interview guidelines by a trained interviewer. The inter-rater reliability has been calculated using two different statistical algorithms, Coehn’s Kappa (Cohen, 1960) and Linear Weighted Kappa (Cohen, 1968). Results: Reliability values are 0.65, 0.56, 0.62 (Weighted Kappa) for Axis I, Axis III, Axis IV, respectively, and 0.63, 0.61 (Cohen’s Kappa) for Axis II and Axis III main conflicts, respectively. Conclusions: The results show a good reliability for Axis I, Axis II, Axis III main conflicts, Axis IV, and a moderate reliability for Axis III. The results are compatible with the international OPD literature and comparable to field trials studies with ICD-10 and DSM-IV.