Spinal radiographic progression in axial spondyloarthritis and the impact of classification as nonradiographic versus radiographic disease: Data from the Swiss Clinical Quality Management cohort

• Monika Hebeisen,

  Roles Conceptualization, Formal analysis, Writing – review & editing

  Affiliations Department of Rheumatology, Zurich University Hospital, Zurich, Switzerland, Statistics Group, Swiss Clinical Quality Management Foundation, Zurich, Switzerland

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• Raphael Micheroli,

  Roles Data curation, Investigation, Writing – review & editing

  Affiliation Department of Rheumatology, Zurich University Hospital, Zurich, Switzerland

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• Almut Scherer,

  Roles Formal analysis, Project administration, Validation, Writing – review & editing

  Affiliation Statistics Group, Swiss Clinical Quality Management Foundation, Zurich, Switzerland

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• Xenofon Baraliakos,

  Roles Data curation, Investigation, Writing – review & editing

  Affiliation Rheumazentrum Ruhrgebiet Herne, Ruhr-University Bochum, Bochum, Germany

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• Manouk de Hooge,

  Roles Data curation, Investigation, Writing – review & editing

  Affiliations VIB Inflammation Research Center, Ghent University, Ghent, Belgium, Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands

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• Désirée van der Heijde,

  Roles Data curation, Methodology, Writing – review & editing

  Affiliation Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands

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• Robert Landewé,

  Roles Data curation, Methodology, Writing – review & editing

  Affiliations Amsterdam Rheumatology & Clinical Immunology Center, Amsterdam, The Netherlands, Zuyderland Medical Center, Heerlen, The Netherlands

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• Kristina Bürki,

  Roles Data curation, Investigation, Writing – review & editing

  Affiliation Department of Rheumatology, Zurich University Hospital, Zurich, Switzerland

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• Michael J. Nissen,

  Roles Data curation, Investigation, Writing – review & editing

  Affiliation Department of Rheumatology, University Hospital, Geneva, Switzerland

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• Burkhard Möller,

  Roles Data curation, Investigation, Writing – review & editing

  Affiliation Department of Rheumatology, Allergology and Clinical Immunology, Inselspital, Bern, Switzerland

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• Pascal Zufferey,

  Roles Data curation, Investigation, Writing – review & editing

  Affiliation Department of Rheumatology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland

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• Pascale Exer,

  Roles Data curation, Investigation, Writing – review & editing

  Affiliation Rheumatology Practice, Basel, Switzerland

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• Adrian Ciurea

  Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing

  * E-mail: adrian.ciurea@usz.ch

  Affiliation Department of Rheumatology, Zurich University Hospital, Zurich, Switzerland

  http://orcid.org/0000-0002-7870-7132

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