Validation of disease activity and functional status questionnaires in spondyloarthritis

Patients naïve to the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and to the Ankylosing Spondylitis Disease Activity Score (ASDAS) have voiced confusion in our clinics over the use of the term "AS" in these instruments. It is unknown whether these tools may be applied to ot...

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Bibliographic Details
Published in:Clinical and experimental rheumatology 2015-03, Vol.33 (2), p.146-152
Main Authors: Quinzanos, Itziar, Luong, Phat T, Bobba, Sushmitha, Steuart Richards, J, Majithia, Vikas, Davis, Lisa A, Caplan, Liron
Format: Article
Language:English
Subjects:
Adult
Aged
Cross-Sectional Studies
Disability Evaluation
Female
Health Status
Humans
Male
Middle Aged
Predictive Value of Tests
Prognosis
Registries
Reproducibility of Results
Severity of Illness Index
Spondylarthritis - diagnosis
Spondylarthritis - physiopathology
Surveys and Questionnaires
United States
United States Department of Veterans Affairs
Veterans Health
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Summary:Patients naïve to the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and to the Ankylosing Spondylitis Disease Activity Score (ASDAS) have voiced confusion in our clinics over the use of the term "AS" in these instruments. It is unknown whether these tools may be applied to other related forms of spondyloarthritis (SpA). The Bath Ankylosing Spondylitis Functional Index (BASFI) questionnaire also requires more definitive validation. We 1) validated the BASFI against a standard definition of disability; and 2) validated slightly modified versions of the BASDAI and ASDAS questionnaires that replace references to "AS" with the term "inflammatory arthritis" for use in non-AS SpA. Adult patients with SpA enrolled in the Veterans Affairs Program to Understand the Longterm outcomes in Spondylo-ARthritis (PULSAR) completed the BASFI, BASDAI, ASDAS and altered versions of the BASDAI (PULSAR-modified Bath Disease Activity Index [PuBaDAI]) and ASDAS (PULSAR-modified Ankylosing Spondylitis Disease Activity Score [PuASDAS]). Spearman correlations and logistic regression were used to analyse the scores. The correlation between BASDAI and PuBaDAI and between ASDAS and PuASDAS scores was high (Spearman's rho=0.92, p
ISSN:0392-856X