title: Test-retest Reliability and Correlations of 5 Global Measures Addressing At-work Productivity Loss in Patients with Rheumatic Diseases.
abstract: OBJECTIVE
  Several global measures to assess at-work productivity loss or presenteeism in patients with rheumatic diseases have been proposed, but the comparative validity is hampered by the lack of data on test-retest reliability and comparative concurrent and construct validity. Our objective was to test-retest 5 global measures of presenteeism and to compare the association between these scales and health-related well-being.
  
  
  METHODS
  Sixty-five participants with inflammatory arthritis or osteoarthritis in paid employment were recruited from 7 countries (UK, Canada, Netherlands, France, Sweden, Romania, and Italy). At baseline and 2 weeks later, 5 global measures of presenteeism were evaluated: the Work Productivity Scale-Rheumatoid Arthritis (WPS-RA), Work Productivity and Activity Impairment Questionnaire (WPAI), Work Ability Index (WAI), Quality and Quantity questionnaire (QQ), and the WHO Health and Performance Questionnaire (HPQ). Agreement between the 2 timepoints was assessed using single-measure intraclass correlations (ICC) and correlated between each other and with visual analog scale general well-being scores at followup by Spearman correlation.
  
  
  RESULTS
  ICC between measures ranged from fair (HPQ 0.59) to excellent (WPS-RA 0.78). Spearman correlations between measures were moderate (Qquality vs WAI, r = 0.51) to strong (WPS-RA vs WPAI, r = 0.88). Correlations between measures and general well-being were low to moderate, ranging from -0.44 ≤ r ≤ 0.66.
  
  
  CONCLUSIONS
  Test-retest results of 4 out of 5 global measures were good, and the correlations between these were moderate. The latter probably reflect differences in the concepts, recall periods, and references used in the measures, which implies that some measures are probably not interchangeable.
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Sarah
authors.initials: S
authors.lastname: Leggett
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Antje
authors.initials: A
authors.lastname: van der Zee-Neuen
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Annelies
authors.initials: A
authors.lastname: Boonen
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Dorcas E
authors.initials: DE
authors.lastname: Beaton
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Mihai
authors.initials: M
authors.lastname: Bojinca
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Ailsa
authors.initials: A
authors.lastname: Bosworth
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Sabrina
authors.initials: S
authors.lastname: Dadoun
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Bruno
authors.initials: B
authors.lastname: Fautrel
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Sofia
authors.initials: S
authors.lastname: Hagel
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Catherine
authors.initials: C
authors.lastname: Hofstetter
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Diane
authors.initials: D
authors.lastname: Lacaille
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Denise
authors.initials: D
authors.lastname: Linton
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Carina
authors.initials: C
authors.lastname: Mihai
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Ingemar F
authors.initials: IF
authors.lastname: Petersson
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Pam
authors.initials: P
authors.lastname: Rogers
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Jamie C
authors.initials: JC
authors.lastname: Sergeant
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Carlo
authors.initials: C
authors.lastname: Sciré
authors.affiliation: From the Arthritis Research UK Centre for Epidemiology, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK; Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute, Maastricht University, The Netherlands; Mobility Program Clinical Research Unit, St. Michael's Hospital, Toronto, Ontario, Canada; Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania; National Rheumatoid Arthritis Society, Maidenhead, UK; Department of Rheumatology, Université Pierre et Marie Curie, Paris, France; Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skane University Hospital, Lund, Sweden; Canadian Arthritis Patient Alliance, Toronto, Ontario, Canada; Arthritis Research Centre of Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada; Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden; NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; Epidemiology Unit, Italian Society for Rheumatology, Milan, Italy; and the Arthritis Research UK/MRC Centre for Musculoskeletal Health and Research, University of Southampton, Southampton, UK.S. Leggett, MSc, Arthritis Research UK Centre for Epidemiology; A. van der Zee-Neuen, PhD, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; A. Boonen, MD, PhD, Professor of Rheumatology, Department of Rheumatology, Maastricht University Medical Centre, and Caphri Research Institute; D.E. Beaton, PhD, Mobility Program Clinical Research Unit, St. Michael's Hospital; M. Bojinca, MD, PhD, Internal Medicine and Rheumatology Clinic, Dr. Ion Cantacuzino Hospital, Carol Davila University of Medicine and Pharmacy; A. Bosworth, Patient Partner, National Rheumatoid A
authors.forename: Suzanne M M
authors.initials: SM
authors.lastname: Verstappen
mesh_terms: D000041:Absenteeism; D000328:Adult; D004185:Disability Evaluation; D004526:Efficiency; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012216:Rheumatic Diseases; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D017132:Workplace
keywords: AT-WORK PRODUCTIVITY LOSS; CORRELATIONS; GLOBAL MEASURES; PRESENTEEISM; RHEUMATIC DISEASES; TEST-RETEST