Authors
M v Rudwaleit, D Van Der Heijde, R Landewé, J Listing, N Akkoc, J Brandt, J Braun, CT Chou, E Collantes-Estevez, M Dougados, F Huang, J Gu, MA Khan, Y Kirazli, WP Maksymowych, Herman Mielants, Inge Juul Sørensen, S Ozgocmen, E Roussou, R Valle-Oñate, U Weber, JUAN Wei, J Sieper
Publication date
2009/6/1
Journal
Annals of the rheumatic diseases
Volume
68
Issue
6
Pages
777-783
Publisher
BMJ Publishing Group Ltd
Description
Objective
To validate and refine two sets of candidate criteria for the classification/diagnosis of axial spondyloarthritis (SpA).
Methods
All Assessment of SpondyloArthritis international Society (ASAS) members were invited to include consecutively new patients with chronic (⩾3 months) back pain of unknown origin that began before 45 years of age. The candidate criteria were first tested in the entire cohort of 649 patients from 25 centres, and then refined in a random selection of 40% of cases and thereafter validated in the remaining 60%.
Results
Upon diagnostic work-up, axial SpA was diagnosed in 60.2% of the cohort. Of these, 70% did not fulfil modified New York criteria and, therefore, were classified as having “non-radiographic” axial SpA. Refinement of the candidate criteria resulted in new ASAS classification criteria that are defined as: the presence of sacroiliitis by radiography or by magnetic resonance …
Total citations
Scholar articles
M Rudwaleit, D Van Der Heijde, R Landewé, J Listing… - Annals of the rheumatic diseases, 2009