Russian versions of disease activity and functional condition evaluation scale in patients with Bekhterev's disease

• Published in: Klinicheskaia meditsina Vol. 85; no. 4; p. 40
• Main Authors: Poddubnyĭ, D A, Rebrov, A P, Morova, O L
• Format: Journal Article
• Language: Russian
• Published: Russia (Federation) 2007
• Subjects: Adult; C-Reactive Protein - physiology; Drug Therapy; Female; Humans; Language; Male; Middle Aged; Severity of Illness Index; Spondylitis, Ankylosing - classification; Spondylitis, Ankylosing - drug therapy; Spondylitis, Ankylosing - physiopathology; Surveys and Questionnaires
• ISSN: 0023-2149

The aim of the study was Russianization and evaluation of the main psychometric properties (reliability, validity, and sensitivity) of the questionnaires BASDAI, BASFI, and DFI After the translation and preliminary approbation of the questionnaires, 65 patients (64 men and 1 woman) with a valid, in accordance with modified New York criteria, diagnosis of ankylosing spondylitis (AS), were included in the study. The reliability of BASDAI, BASFI, and DFI scales was evaluated using test-retest method; the validity and sensitivity of the scales were evaluated as well. Test-retest analysis did not reveal significant differences between the primary and subsequent values of all the questionnaires. Cronbach a internal consistency coefficient was 0.891 for BASDAI, 0.976 for BASFI, and 0.978for DFI, which testified that the results were highly reproducible and reliable. For BASDAI questionnaire there were no significant cor- relations with laboratory indices of AS activity (ESR, C-reactive protein level etc.), but there were significant correlations with BASF values (r = 0.73, p < 0.001) and DFI (r = 0.67, p < 0.001). The values of BASFl significantly correlated with signs of spine flexibility (tests of Schober, Ott, Thomayer, and Forestier), chest wall excursions, the duration of the disease, and the presence of hip joint involvement. DFI values correlated only with some of the listed indices (Schober and Thomayer tests; chest wall excursions). When the sensitivity was tested, only changes in BASDAI values (improvement by 16.1%, p < 0.05) were statistically significant. For BASFI and DFI changes in the values were not significant, but they were more prominent for BASFI (6.4% vs. 1. 7%, respectively). In conclusion, BASDAI questionnaire is a highly reliable and sensitive tool, but it only takes into account clinical signs of the activity of the disease. BASFI and DFI scales possess equal reliability, but the validity and sensitivity of BASFI scale are higher.