Validity of clinical psoriatic arthritis diagnoses made by rheumatologists in the Swedish National Patient Register.
Johan Karlsson WallmanG-M AleniusEva KlingbergValgerdur SigurdardottirS WedrénSofia ExarchouUlf LindströmDaniela di GiuseppeJohan AsklingLennart T H JacobssonPublished in: Scandinavian journal of rheumatology (2022)
The validity of rheumatologist-made, clinical ICD-10 diagnoses for PsA in the Swedish NPR is good, with PPVs of 69-82% for CASPAR fulfilment and 86% for meeting any established PsA classification criteria.