Abstract
Background: The aim of this study was to investigate the psychometric properties of the Persian version of a structured clinical interview for personality disorders based on DSM-5 (R) (SCID-5-PD) in the population of patients with psychiatric disorders in Tehran.Method: The study population includes all outpatients and inpatients referred to three psychiatric centers in Tehran, including Iran Psychiatric Hospital, Rasoul Akram Hospital and Clinic of Behavioral Sciences and Mental Health (Tehran Psychiatric Institute). Inclusion criteria were age between 16 and 70 years, written Informed consent and the ability to understand and speak in Persian and no special physical problems that interfere with the interview process. Sampling in this study was done by Convenience sampling. In this study, in addition to the demographic questionnaire, the Persian version of SCID-5-PD was used. Finally, in order to evaluate the information, the methods of face and content validity and diagnostic validity, test-retest reliability and inter-rater reliability were used.Results: the diagnoses related to obsessive-compulsive personality disorder, paranoid, schizotypal, schizoid, histrionic, narcissistic, borderline and antisocial kappa were higher than 0.4 and the diagnoses related to avoidant personality disorder were dependent and in other certain disorders are below 0.4. Regarding borderline personality disorder with kappa 0.839, the highest agreement was reported between the two reports of the psychiatrist and the SCID interviewer. Also, the specificity results were mostly better than the sensitivity results, and in all diagnoses except obsessive-compulsive and paranoid personality disorder, the specificity was higher than 0.9 and in these two diagnoses, the specificity was higher than 0.85, which indicates the desired characteristic. SCID-5-PD. The sensitivity of all diagnoses except avoidant and dependent personality disorder was also reported to be higher than 0.8; But the susceptibility of avoidant and dependent personality disorder was 0.66. Also, the study of LR + / LR- ratio showed that this tool has the best diagnosis for histrionic, antisocial and schizotypal personality disorder. It is also suitable for other personality disorders except schizoid personality disorder and certain other disorders.Conclusion: According to the findings of the present study, SCID-5-PD can be used in psychiatric clinics and hospitals as a diagnostic tool. In general, this version is suitable for most diagnoses; but with regard to diagnoses of schizoid personality disorder and certain other disorders, this should be done with more caution.
Schizoid personality disorder
