Development of a patient-reported outcome measure for the foot affected by rheumatoid arthritis

Walmsley, Steven, Ravey, Michael, Graham, Andrea ORCID: https://orcid.org/0000-0003-1048-9121, Teh, LeeSuan and Williams, Anita ORCID: https://orcid.org/0000-0003-1224-4347 2012, 'Development of a patient-reported outcome measure for the foot affected by rheumatoid arthritis' , Journal of Clinical Epidemiology, 65 , pp. 413-422.

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Abstract

Objective: To develop an idiographic and nomothetic patient-reported outcome measure (PROM) for the assessment and evaluation of patients with feet affected by rheumatoid arthritis (RA). Study Design and Setting: The development of the Salford Rheumatoid Arthritis Foot Evaluation (SAFE) Instrument PROM was divided into four stages: establishment of the PROM’s conceptual basis and content generation, following a descriptive phenomenological study; clinimetric instrument development; instrument pretesting, involving expert reviews and cognitive interviews; and demonstration of instrument measurement properties, including convergent validity and testeretest reliability of the nomothetic scale. Results: A total of 123 items were initially generated for the SAFE, with 25 of them clinimetrically selected for nomothetic scale(SAFE-Part A) and 80 items initially included in the idiographic scale (SAFE-Part B). The pretesting strategy proved effective for improving and refining the SAFE, with the final draft consisting of 19 items in Part A and 42 items in Part B. The SAFE-Part A has strong evidence for convergent validity and testeretest reliability. Conclusion: The SAFE features a nomothetic and idiographic assessment strategy that, with further development, will prove to be a valuable tool for clinicians involved in managing the foot health problems associated with RA.

Item Type:	Article
Themes:	Health and Wellbeing
Schools:	Schools > School of Health and Society > Centre for Health Sciences Research
Journal or Publication Title:	Journal of Clinical Epidemiology
Publisher:	Elsevier
Refereed:	Yes
ISSN:	0895-4356
Depositing User:	Dr Anita E Williams
Date Deposited:	23 Feb 2012 10:39
Last Modified:	26 Nov 2018 10:29
URI:	http://usir.salford.ac.uk/id/eprint/20665

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