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Rheumatology International

Published in:

01-10-2005 | Original Article

The Turkish versions of the Bath Ankylosing Spondylitis and Dougados Functional Indices: reliability and validity

Authors: Altinay Goksel Karatepe, Yesim Akkoc, Servet Akar, Yesim Kirazli, Nurullah Akkoc

Published in: Rheumatology International | Issue 8/2005

Abstract

Objective

The aim of this study was to develop a Turkish version of the Bath Ankylosing Spondylitis Functional Index (BASFI) and Dougados Functional Index (DFI) and assess their reliability, validity, and sensitivity to change.

Methods

The Turkish versions of the BASFI and DFI were obtained after a translation and back-translation process. Seventy-one patients with ankylosing spondylitis (AS) were included in the study. For investigation of the reliability of the BASFI and DFI, 36 of the patients recompleted both indices on the following day. To assess validity, the patients were evaluated with the Bath AS Disease Activity Index (BASDAI), Bath AS Metrology Index (BASMI), Bath AS Patient Global Score (BAS-G), physicians’ assessment of disease activity, Bath AS Radiology Index-spine (BASRI-s) and sacroiliac joints, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP). To assess the sensitivity to change, 16 patients were included in an 8-week home exercise program. In addition, 16 who had been on nonsteroidal anti-inflammatory drug (NSAID) treatment were requested to stop the treatment for 1 to 2 weeks.

Results

There were no significant differences in BASFI and DFI scores on two occasions within 24 h (P>0.05). The results showed correlations between both of the functional indices and the aforementioned validation parameters except ESR, CRP, and radiologic changes in the sacroiliac joints. The BASFI and DFI scores and BASMI and BASDAI values showed significant improvements in the home-exercise group. For the group of patients whose NSAIDs were stopped, BASFI, DFI, and BASDAI scores showed significant increase, whereas the mean BASMI score did not change.

Conclusion

The results indicate that the Turkish versions of the BASFI and DFI are reliable, valid, and sensitive to change.

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Title: The Turkish versions of the Bath Ankylosing Spondylitis and Dougados Functional Indices: reliability and validity
Authors: Altinay Goksel Karatepe
Yesim Akkoc
Servet Akar
Yesim Kirazli
Nurullah Akkoc
Publication date: 01-10-2005
Publisher: Springer-Verlag
Published in: Rheumatology International / Issue 8/2005
Print ISSN: 0172-8172
Electronic ISSN: 1437-160X
DOI: https://doi.org/10.1007/s00296-004-0481-x

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