ICF-based comparison of disease-specific instruments measuring physical functional ability for ankylosing spondylitis

Sigl, T., Cieza, A., van der Heijde, D. and Stucki, G. (2005) ICF-based comparison of disease-specific instruments measuring physical functional ability for ankylosing spondylitis. Annals of the Rheumatic Diseases, 64, (11), 1576-1581. (doi:10.1136/ard.2004.027185). (PMID:15843457).


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Objectives: To link validated and widely used instruments measuring physical functional ability in ankylosing spondylitis to the International Classification of Functioning, Disability, and Health (ICF) and to compare their contents, based on the results of the linking process.

Methods: The Bath Ankylosing Spondylitis Functional Index (BASFI), the Dougados Functional Index (DFI), the Health Assessment Questionnaire modified for the spondylarthropathies (HAQ-S), and the Revised Leeds Disability Questionnaire (RLDQ) were linked to the ICF separately by two trained health professionals according to 10 linkage rules.

Results: All concepts contained in the items of the selected instruments could be successfully linked to the ICF except for “illness” included in the HAQ-S. Altogether 55 different ICF categories were linked. Seven belonged to “body functions”, 43 to “activities and participation”, and five to “environmental factors”. The component “body structure” was not contained in any of the four instruments. Only two ICF categories were common to all selected questionnaires, but there was a high level of concordance on the concepts represented in them. However, especially in terms of “activities and participation”, the emphasised aspects differed.

Conclusions: The ICF provides an excellent common framework for the comparison of disease specific instruments for ankylosing spondylitis. For a future revision of the ICF, a specification of major limitations in patients with ankylosing spondylitis is suggested.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1136/ard.2004.027185
ISSNs: 0003-4967 (print)
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine
R Medicine > RM Therapeutics. Pharmacology
Divisions : Faculty of Social and Human Sciences > Psychology
ePrint ID: 342039
Accepted Date and Publication Date:
November 2005Published
20 April 2005Made publicly available
Date Deposited: 10 Aug 2012 09:16
Last Modified: 31 Mar 2016 14:32
URI: http://eprints.soton.ac.uk/id/eprint/342039

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