Building a composite score for patient self-report of flare in osteoarthritis: a comparison of methods with the Flare-OA-16 questionnaire.
Fabiana QueirogaJonathan EpsteinMarie-Line ErpeldingMarc SoudantLauren KingElisabeth SpitzJean-Francis MaillefertBruno FautrelLeigh F CallahanLyn MarchDavid J HunterFrancis GuilleminPublished in: Journal of clinical epidemiology (2024)
Three alternatives explored to build a composite score showed similar construct validity. Some metric superiority (better score distribution and reproducibility) of the Rasch model is promising for the detection of occurrence and assessment of severity of a flare in OA.