TY - JOUR T1 - Performance of the Assessment in Spondyloarthritis International Society Classification for Axial and Peripheral Spondyloarthritis in an Established Clinical Cohort: Comparison with Criteria Sets of Amor and the European Spondylarthropathy Study Group JF - The Journal of Rheumatology JO - J Rheumatol SP - 816 LP - 821 DO - 10.3899/jrheum.111088 VL - 39 IS - 4 AU - PETER P. CHEUNG AU - SIMON PATERNOTTE AU - VINCENT BURKI AU - ANNE DURNEZ AU - MURIEL ELHAI AU - ISABELLE FABREGUET AU - EUGENIE KOUMAKIS AU - MAGALI MEYER AU - JUDITH PAYET AU - FANNY ROURE AU - MAXIME DOUGADOS AU - LAURE GOSSEC Y1 - 2012/04/01 UR - http://www.jrheum.org/content/39/4/816.abstract N2 - Objective. To evaluate the performance of the Assessment in Spondyloarthritis International Society (ASAS) criteria (axial or peripheral) against the Amor and European Spondylarthropathy Study Group criteria in established spondyloarthritis (SpA). Methods. Rheumatologist-diagnosed patients with SpA were retrospectively classified according to the different criteria sets. Clinical characteristics of patients fulfilling all 3 criteria were compared with those who did not, by nonparametric statistics. Results. ASAS classified 90% of the 231 patients, with 169 (73%) fulfilling all 3 criteria sets. Multivariate analysis showed the 62 patients not fulfilling all criteria sets were older at symptom onset (p < 0.001) and less likely to have inflammatory back pain (p < 0.001), peripheral arthritis (p < 0.001), or elevated C-reactive protein levels (p = 0.034). Conclusion. ASAS criteria can be used in established disease. ER -