Validation of parent-report questionnaires for large-scale online screening of avoidant/restrictive food intake disorder in children and adolescents

Objective: Studies assessing the validity of screening measures for avoidant/restrictive food intake disorder (ARFID) remain scarce. We evaluated the diagnostic performance and validity of an online, parent-reported screening approach for ARFID in a population-based sample of children. Methods: Participants were drawn from the ARFID Initiative Sweden (ARIES) cohort and included 65 children aged 6-14 years. Parents completed three screening questionnaires (Pica, ARFID, and Rumination Disorder Interview-ARFID Questionnaire [PARDI-AR-Q], Nine-Item ARFID Screen [NIAS], and Parent Eating Disorder Examination Questionnaire [PEDE-Q]), followed by a diagnostic interview (PARDI). Diagnostic performan