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The short-interval test-retest interrater reliability of the Structured Clinical Interview for DSM-III-R personality disorders (SCID-II) was studied in a psychotherapy outpatient group whose main complaint was mostly an Axis I anxiety disorder. Using a test-retest approach to assess interrater reliability, three sources of variance were taken into account (rater variance in the elicitation and interpretation of information and patient variance across interviews). Base rate requirements were established before calculating reliability coefficients. On the whole, interrater agreement on the SCID-II was found to be satisfactory, except for the histrionic personality traits. This is the first study that has estimated short-interval test-retest interrater reliability of the SCID-II in outpatients, and also the first that has studied single SCID-II traits and dimensional diagnoses. The results found support the use of the SCID-II as a diagnostic instrument for clinical and research purposes.
Dreessen et al. (1998) studied this question.