Development and Preliminary Validation of the Questionnaire on Pediatric Gastrointestinal Symptoms to Assess Functional Gastrointestinal Disorders in Children and Adolescents

Abstract

This study supports the content validity of the QPGS. Form A is a reliable measure for parents of children 4 to 9 years old, but the child self-report Form C appears to be more reliable for 10 to 18 year olds.