Validation of the Estonian Versions of the Pediatric Symptom Checklist-17 Youth Self-Report and Parent Report.

The short forms of the Pediatric Symptom Checklist-PSC-17-Y for youth self-reports and PSC-17 for parent reports-are instruments designed to identify children and adolescents at risk of internalizing, externalizing, or attention problems. This study examined the psychometric properties of the Estonian adaptations of both versions, administered within an online population screening survey, the Study of Estonian Children's Mental Health. The analytical sample comprised 533 Estonian children and adolescents and their parents (n = 367). Construct and criterion validity were evaluated by examining associations between PSC-17-Y and PSC-17 scores and other conceptually related measures. Confirmatory factor analyses supported the original three-factor structure for both versions, these also demonstrated acceptable reliability, and evidence of structural, convergent, and criterion validity. Measurement properties were consistent across genders and age groups in both PSC-17 versions. These findings support the reliability and validity of the Estonian PSC-17(Y) for use in population-based mental health screening.