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Health-related quality of life in ANCA-associated vasculitis and item generation for a disease-specific patient-reported outcome measure

Authors Robson JC, Dawson J, Cronholm PF, Milman N, Kellom KS, Ashdown S, Easley E, Farrar JT, Gebhart D, Lanier G, McAlear CA, Peck J, Luqmani RA, Shea JA, Tomasson G, Merkel PA

Received 27 June 2017

Accepted for publication 13 October 2017

Published 4 January 2018 Volume 2018:9 Pages 17—34

DOI https://doi.org/10.2147/PROM.S144992

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Dr Robert Howland


Joanna C Robson,1,2 Jill Dawson,3 Peter F Cronholm,4 Nataliya Milman,5 Katherine S Kellom,6 Susan Ashdown,7 Ebony Easley,8 John T Farrar,9 Don Gebhart,10,11 Georgia Lanier,10,11 Carol A McAlear,12 Jacqueline Peck,7 Raashid A Luqmani,7 Judy A Shea,13 Gunnar Tomasson,14 Peter A Merkel10,11

1Department of Rheumatology, Faculty of Health and Applied Sciences, University of the West of England, Bristol, UK; 2School of Clinical Sciences, University of Bristol, Bristol, UK; 3Department of Population Health (HSRU), University of Oxford, Oxford, UK; 4Department of Family Medicine and Community Health, University of Pennsylvania, Philadelphia, PA, USA; 5Division of Rheumatology, Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa, ON, Canada; 6PolicyLab, Children’s Hospital of Philadelphia, Philadelphia, PA, USA; 7Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; 8Department of Family Medicine and Community Health, Mixed Methods Research Laboratory, University of Pennsylvania, Philadelphia, PA, USA; 9Biostatistics and Epidemiology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA; 10Division of Rheumatology, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA; 11Department of Biostatistics and Clinical Epidemiology, University of Pennsylvania, Philadelphia, PA, USA; 12Vasculitis Research, University of Pennsylvania, Philadelphia, PA, USA; 13School of Medicine, University of Pennsylvania, Philadelphia, PA, USA; 14Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland

Objective: The antineutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAVs) are multisystem diseases of the small blood vessels. Patients experience irreversible damage and psychological effects from AAV and its treatment. An international collaboration was created to investigate the impact of AAV on health-related quality of life (HRQoL), and develop a disease-specific patient-reported outcome measure to assess outcomes of importance to patients.
Methods: Patients with AAV from the UK, USA, and Canada were interviewed to identify salient aspects of HRQoL affected by AAV. The study was overseen by a steering committee including four patient research partners. Purposive sampling of interviewees ensured representation of a range of disease manifestations and demographics. Inductive analysis was used to identify themes of importance to patients; these were further confirmed by a free-listing exercise in the US. Individual themes were recast into candidate items, which were scrutinized by patients, piloted through cognitive interviews and received a linguistic and translatability evaluation.
Results: Fifty interviews, conducted to saturation, with patients from the UK, USA, and Canada, identified 55 individual themes of interest within seven broad domains: general health perceptions, impact on function, psychological perceptions, social perceptions, social contact, social role, and symptoms. Individual themes were constructed into >100 candidate questionnaire items, which were then reduced and refined to 35 candidate items.
Conclusion: This is the largest international qualitative analysis of HRQoL in AAV to date, and the results have underpinned the development of 35 candidate items for a disease-specific, patient-reported outcome questionnaire.

Keywords: ANCA-associated vasculitis, quality of life, patient-reported outcomes, granulomatosis with polyangiitis, microscopic polyangiitis, eosinophilic granulomatosis with polyangiitis

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