Show simple item record

dc.contributor.authorShoop‐Worrall, Stephanie J. W.; orcid: 0000-0002-9441-5535; email: Stephanie.shoop-worrall@manchester.ac.uk
dc.contributor.authorOude Voshaar, Martijn A. H.; orcid: 0000-0003-2438-9973
dc.contributor.authorMcDonagh, Janet E.
dc.contributor.authorVan de Laar, Mart A. F. J.
dc.contributor.authorWulffraat, Nico
dc.contributor.authorThomson, Wendy
dc.contributor.authorHyrich, Kimme L.
dc.contributor.authorVerstappen, Suzanne M. M.
dc.date.accessioned2021-06-04T16:14:08Z
dc.date.available2021-06-04T16:14:08Z
dc.date.issued2021-06-04
dc.date.submitted2019-12-13
dc.identifierhttps://chesterrep.openrepository.com/bitstream/handle/10034/624845/acr.24204.pdf?sequence=2
dc.identifierhttps://chesterrep.openrepository.com/bitstream/handle/10034/624845/acr.24204.xml?sequence=3
dc.identifier.citationArthritis Care & Research
dc.identifier.urihttp://hdl.handle.net/10034/624845
dc.descriptionFrom Wiley via Jisc Publications Router
dc.descriptionHistory: received 2019-12-13, accepted 2020-03-31, pub-electronic 2021-06-04
dc.descriptionArticle version: VoR
dc.descriptionPublication status: Published
dc.descriptionFunder: Medical Research Council; Id: http://dx.doi.org/10.13039/501100000265; Grant(s): UK Grant number: MR/K501311/1
dc.descriptionFunder: Versus Arthritis; Id: http://dx.doi.org/10.13039/501100012041; Grant(s): 20380, 20542
dc.descriptionFunder: NIHR Manchester Biomedical Research Centre; Id: http://dx.doi.org/10.13039/100014653
dc.description.abstractObjective: As young people enter adulthood, the interchangeable use of child and adult outcome measures may inaccurately capture changes over time. This study aimed to use item response theory (IRT) to model a continuous score for functional ability that can be used no matter which questionnaire is completed. Methods: Adolescents (ages 11–17 years) in the UK Childhood Arthritis Prospective Study (CAPS) self‐completed an adolescent Childhood Health Assessment Questionnaire (CHAQ) and a Health Assessment Questionnaire (HAQ). Their parents answered the proxy‐completed CHAQ. Those children with at least 2 simultaneously completed questionnaires at initial presentation or 1 year were included. Psychometric properties of item responses within each questionnaire were tested using Mokken analyses to assess the applicability of IRT modeling. A previously developed IRT model from the Pharmachild‐NL registry from The Netherlands was validated in CAPS participants. Agreement and correlations between IRT‐scaled functional ability scores were tested using intraclass correlations and Wilcoxon’s signed rank tests. Results: In 303 adolescents, the median age at diagnosis was 13 years, and 61% were female. CHAQ scores consistently exceeded HAQ scores. Mokken analyses demonstrated high scalability, monotonicity, and the fact that each questionnaire yielded reliable scores. There was little difference in item response characteristics between adolescents enrolled in CAPS and Pharmachild‐NL (maximum item residual 0.08). Significant differences were no longer evident between IRT‐scaled HAQ and CHAQ scores. Conclusion: IRT modeling allows the direct comparison of function scores regardless of different questionnaires being completed by different people over time. IRT modeling facilitates the ongoing assessment of function as adolescents transfer from pediatric clinics to adult services.
dc.languageen
dc.rightsLicence for VoR version of this article: http://creativecommons.org/licenses/by/4.0/
dc.sourceissn: 2151-464X
dc.sourceissn: 2151-4658
dc.subjectOriginal Article
dc.subjectOriginal Articles
dc.titleCommon Functional Ability Score for Young People With Juvenile Idiopathic Arthritis
dc.typearticle
dc.date.updated2021-06-04T16:14:08Z
dc.date.accepted2020-03-31


Files in this item

Thumbnail
Name:
acr.24204.pdf
Size:
303.0Kb
Format:
PDF
Thumbnail
Name:
acr.24204.xml
Size:
9.523Kb
Format:
XML

This item appears in the following Collection(s)

Show simple item record