The DIAMOND-KID: Psychometric Properties of a Structured Diagnostic Interview for DSM-5 Anxiety, Mood, and Obsessive-Compulsive and Related Disorders in Children and Adolescents.

The objective of the present study was to examine the reliability and validity of a new semi-structured interview for pediatric psychiatric disorders, which is needed as existing interviews do not cover the full range of anxiety, mood, and obsessive-compulsive disorder (OCD)-related disorders. Three hundred eleven child patients (aged 10-17) were administered the Diagnostic Interview for Anxiety, Mood, and OCD and Related Neuropsychiatric Disorders-Child and Adolescent Version (DIAMOND-KID). Of these, 65 provided interrater reliability data and 59 provided test-retest reliability data. Participants also completed self-report measures that assessed symptoms of anxiety, mood, and OCD and related disorders. Although parents/guardians could participate in the interview at the clinician's discretion, most of the initial interviews and all of the reliability interviews were based on the child's self-report. Test-retest reliability ranged from very good to excellent. Interrater reliability was more variable, with estimates for generalized anxiety disorder and major depressive disorder in the questionable range; the other interrater reliability estimates ranged from good to very good. Convergent validity was established by significant between-group comparisons on applicable self-report measures for all diagnoses. The results of the present study indicate that the DIAMOND-KID is a promising semi-structured diagnostic interview for 5th edition of the Diagnostic and Statistical Manual of Mental Disorders in pediatric populations.