The DUX-25 after Twenty-Five Years: New Analyses and Reference Data

Hendrik M. Koopman, Benjamin S.D. Telkamp, Annelieke Hijkoop, Julie A. Reuser, Marlous J. Madderom, Hanneke IJsselstijn, Andre B. Rietman*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)
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Twenty-five years after its inception, we present new analyses and reference data for the DUX-25, a questionnaire on health-related quality of life for children 8–17 years old and their parents as proxy. Data from 774 healthy children and their caregivers were collected through web-based data collection. Participants were recruited via primary and secondary schools in the Netherlands. The DUX-25 showed adequate psychometric qualities. Using exploratory and confirmatory factor analyses, we were able to support the theorized four-factor model. In addition, a model with five factors emerged in which the factor ‘Social’ was divided into ‘Social Close’ and ‘Social Far’. A comparison of the outcomes of the PedsQL with those of the DUX-25 provides evidence for a high construct validity of the DUX-25. With the new updated reference data, the DUX-25 can still be used in inpatient and outpatient settings to measure health-related quality of life of children with chronic conditions.

Original languageEnglish
Article number1569
Number of pages13
Issue number10
Publication statusPublished - 17 Oct 2022

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