Navigating young minds: reliability and validity of the Greek version of kiddie – schedule for affective disorders and schizophrenia – present and lifetime DSM-5 version (K-SADS-PL-GR-5)

BACKGROUND: The Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version (K-SADS-PL) is one of the most popular semi-structured psychiatric interviews for children and adolescents. Its latest DSM-5 version (K-SADS-PL DSM-5) has only recently been adapted and validated in various languages. In the present study, we aimed to investigate the reliability and validity of the Greek version of the K-SADS-PL DSM-5. METHODS: A total of 137 patients consecutively referred for admission, aged 7–17, were included. The K-SADS-PL DSM-IV was translated and adapted to correspond to DSM-5 categories. Convergent and divergent validity were assessed against two self-report rating scales, Children’s Depression Inventory (CDI) and Screen for Child Anxiety Related Emotional Disorders (SCARED). Inter-rater reliability was calculated exclusively for instances where a diagnosis involved three or more patients. RESULTS: Our findings revealed good to excellent inter-rater reliability and good to excellent consensual validity across most psychiatric diagnoses, except for panic disorder. Diagnostic efficiency, measured by sensitivity, specificity, positive and negative predictive values, consistently showed high specificity and negative predictive validity across all diagnostic categories. CONCLUSIONS: These findings support the applicability of the Greek version of the K-SADS-PL DSM-5 as a reliable and valid diagnostic tool in Greek-speaking populations.