Construct validity and responsiveness of feasible composite disease activity measures for use in daily clinical practice in patients with psoriatic arthritis.
Fazira R KasiemMarc-Redwart KokJolanda J LuimeIlja TchetverikovLindy-Anne KorswagenNatasja H A M DenissenYvonne P M Goekoop-RuitermanMaikel van OosterhoutFaouzia FodiliJohanna M W HazesWilliam TillettMarijn Visnull nullPublished in: RMD open (2023)
This is the first study assessing the performance of the 3VAS and 4VAS in an observational cohort of patients with early PsA. Both measures have promising performance characteristics, showing strong correlations and good discrimination with existing composite measures. The 4VAS may be the preferred version with better face validity.