Comparing different revisions of the Childhood Health Assessment Questionnaire to reduce the ceiling effect and improve score distribution: Data from a multi-center European cohort study of children with JIA


Groen W., Unal E., Norgaard M., Maillard S., Scott J., Berggren K., ...More

PEDIATRIC RHEUMATOLOGY, vol.8, 2010 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 8
  • Publication Date: 2010
  • Doi Number: 10.1186/1546-0096-8-16
  • Journal Name: PEDIATRIC RHEUMATOLOGY
  • Journal Indexes: Science Citation Index Expanded, Scopus

Abstract

Background: The original version of the Childhood Health Assessment Questionnaire (CHAQ30orig) suffers from a ceiling effect and hence has reduced clinical validity. The purpose of this study was to evaluate the effect of adding eight more demanding items (CHAQ38) and a new categorical response option (CATII) on discriminant validity and score distribution in a European patient sample.