AB0802 Use of Caspar and ASAS Classification Criteria for Peripheral Involvement in Patients Diagnosed with Psoriatic Arthritis in the Region of Murcia (Spain)

BackgroundPsoriatic arthritis (PsA) is an inflammatory joint disease with variable clinical presentations. One of these presentations is axial involvement. For this reason, PsA is included within the peripheral spondyloarthritis. Several diagnosis and classification criteria for PsA have been proposed. The CASPAR and ASAS criteria are being implemented progressively in rheumatology. There is some controversy about its usefulness, especially regarding the ASAS criteria for peripheral involvement as these criteria were not designed for use in patients with PsA. There are few publications relating ASAS criteria with PsA and their correlation with CASPAR crtieriaObjectivesThe main objective was to determine the correlation between the presence of CASPAR criteria and ASAS criteria for peripheral involvement (pASAS). Secondary objectives were: (a) to establish the percentage of patients diagnosed with PsA who met CASPAR and pASAS criteria; (b) to determine what percentage of patients meeting CASPAR criteria also met pASAS criteria.MethodsIn a multicenter cross observational study, 292 adult patients diagnosed with PsA were recruited in different hospitals of the Region of Murcia (mean age 53.25 years; 56.2% men; average PsA duration 7,02 years). Diagnosis was made by experienced rheumatologists. The percentage of patients meeting CASPAR and pASAS criteria was determined and a chi-square test was done to stablish the correlation between both criteriaResultsOf the 292 patients studied, 268 (91.8%) met CASPAR criteria and 221 (75.7%) pASAS criteria. For all the patients with CASPAR criteria, 79.1% also met pASAS criteria. The comparison of both criteria with the chi-square test gave a result of 20.7 with a p-value