title: Report of the GRAPPA-OMERACT Psoriatic Arthritis Working Group from the GRAPPA 2015 Annual Meeting.
abstract: The GRAPPA-OMERACT psoriatic arthritis (PsA) working group is in the process of updating the PsA core domain set to improve and standardize the measurement of PsA outcomes. Work streams comprise literature reviews of domains and outcome measurement instruments, an international qualitative research project with PsA patients to generate domains important to patients, outcome measurement instrument assessment, conduct of domain consensus panels with patients and physicians, and evidence-based selection of instruments. Patient research partners are involved in each of the projects. The working group will present findings and seek endorsement for the new PsA core domain set, outcome measurement set, and research agenda at the OMERACT meeting in May 2016.
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Ana-Maria
authors.initials: AM
authors.lastname: Orbai
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Mease
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Maarten
authors.initials: M
authors.lastname: de Wit
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Umut
authors.initials: U
authors.lastname: Kalyoncu
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Willemina
authors.initials: W
authors.lastname: Campbell
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: William
authors.initials: W
authors.lastname: Tillett
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Lihi
authors.initials: L
authors.lastname: Eder
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Musaab
authors.initials: M
authors.lastname: Elmamoun
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Oliver
authors.initials: O
authors.lastname: FitzGerald
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Dafna D
authors.initials: DD
authors.lastname: Gladman
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Niti
authors.initials: N
authors.lastname: Goel
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Laure
authors.initials: L
authors.lastname: Gossec
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Chris A
authors.initials: CA
authors.lastname: Lindsay
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Ingrid
authors.initials: I
authors.lastname: Steinkoenig
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Philip S
authors.initials: PS
authors.lastname: Helliwell
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Neil J
authors.initials: NJ
authors.lastname: McHugh
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Vibeke
authors.initials: V
authors.lastname: Strand
authors.affiliation: From the Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; VU Medical Centre, Amsterdam, The Netherlands, Division of Rheumatology, Johns Hopkins University, Baltimore, Maryland, USA; Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara, Ankara, Turkey; Toronto Western Hospital, Toronto, Ontario, Canada; Royal National Hospital for Rheumatic Diseases, Bath, UK; Department of Rheumatology, St. Vincent's University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland; University of Toronto, Krembil Research Institute, Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Quintiles, Duke University School of Medicine, Durham, North Carolina, USA; Sorbonne Universités, UPMC Univ Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, GRC-UPMC 08 (EEMOIS); AP-HP, Pitié Salpêtrière Hospital, Department of Rheumatology, Paris, France; Cleveland Clinic, Cleveland, Ohio, USA; University of Leeds, Leeds, UK, and Bradford Hospitals National Health Service (NHS) Foundation Trust, Bradford, UK; Division of Immunology, Stanford University, Palo Alto, California, USA; University of Pennsylvania, Philadelphia, Pennsylvania, USA.A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; U. Kalyoncu, MD, Division of Rheumatology, Johns Hopkins University and Department of Internal Medicine, Division of Rheumatology, Hacettepe University Ankara; W. Campbell, BEd LLB, Patient Research Partner, Toronto Western Hospital; W. Tillett, BSc, MB, ChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; L. Eder, MD, PhD, Toronto We
authors.forename: Alexis
authors.initials: A
authors.lastname: Ogdie
mesh_terms: D015535:Arthritis, Psoriatic / Q000175:diagnosis* / Q000188:drug therapy; D006801:Humans; D017063:Outcome Assessment, Health Care; D012720:Severity of Illness Index
keywords: CORE SET; OUTCOME MEASURES; PSORIATIC ARTHRITIS