Common Functional Ability Score for Young People With Juvenile Idiopathic Arthritis.
Stephanie J W Shoop-WorrallMartijn Oude VoshaarJanet E McDonaghMart A F J Van de LaarNico WulffraatWendy ThomsonKimme L HyrichSuzanne M M VerstappenPublished in: Arthritis care & research (2021)
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.