PT  - JOURNAL ARTICLE
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
TI  - 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
AID  - 10.3899/jrheum.111088
DP  - 2012 Feb 15
TA  - The Journal of Rheumatology
PG  - jrheum.111088
4099  - http://www.jrheum.org/content/early/2012/02/10/jrheum.111088.short
4100  - http://www.jrheum.org/content/early/2012/02/10/jrheum.111088.full
AB  - 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.