Evaluation of the Iranian versions of the bath ankylosing spondylitis disease activity index (BASDAI), the bath ankylosing spondylitis functional index (BASFI) and the patient acceptable symptom state (PASS) in patients with ankylosing spondylitis
- 325 Downloads
The Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and the Bath Ankylosing Spondylitis Functional Index (BASFI) are widely used instruments in assessment of patients suffering from ankylosing spondylitis (AS). The Patient Acceptable Symptom State (PASS) is regarded as a target for patients’ well-being. The aim of this study was to translate and adapt BASDAI, BASFI and PASS into the Iranian official language, Farsi, and evaluate their reliability and validity. Ninety patients with AS were included in this study. The questionnaires were translated into Farsi and back translated into English, modified until the final versions were approved with minor adaptations and the VAS was changed to numerical rating scales from 0 to 10. Forty-eight-hour test–retest agreement showed good reliability: interclass correlation coefficient (ICC) for BASDAI was 0.93 (CI at 95%, 0.90–0.95), for BASFI was 0.96 (CI at 95%, 0.94–0.97) and for PASS was 0.87 (CI at 95%, 0.79–0.92). Chronbach’s alpha was 0.95, 0.96 and 0.87 for BASDAI, BASFI and PASS, respectively. BASDAI showed a significant correlation with patient global disease activity index, nocturnal back pain, total back pain, number of swollen joints, number of enthesites, morning stiffness, Bath Ankylosing Spondylitis Global Score (BAS-G), BASFI and BASMI. A significant correlation was also found between BASFI and occiput-to-wall distance, mentum-to-sternum distance, chest expansion, finger-to-floor distance, number of swollen joints, number of enthesites, nocturnal back pain, total back pain, BAS-G, BASDAI and BASMI. Patients who answered “no” to PASS (found their condition unsatisfactory) reported significantly increased pain scores, patient global disease activity scores, BAS-G, BASDAI and BASFI scores. The results showed that the Iranian versions of BASDAI, BASFI and PASS are adequately reliable and valid in patients with AS.
KeywordsAnkylosing spondylitis BASDAI BASFI Iranian PASS
This study was supported by a grant (89-04-40-11640) from Tehran University of Medical Sciences.
Conflict of interest
- 2.Madsen OR, Rytter A, Hansen LB, Suetta C, Egsmose C (2010) Reproducibility of the Bath ankylosing spondylitis indices of disease activity (BASDAI), functional status (BASFI) and overall well-being (BAS-G) in anti-tumour necrosis factor-treated spondyloarthropathy patients. Clin Rheumatol 29(8):849–854PubMedCrossRefGoogle Scholar
- 12.Dougados M, Luo MP, Maksymowych WP, Chmiel JJ, Chen N, Wong RL, Davis JC Jr, van der Heijde D (2008) Evaluation of the patient acceptable symptom state as an outcome measure in patients with ankylosing spondylitis: data from a randomized controlled trial. Arthr Rheum 59(4):553–560CrossRefGoogle Scholar
- 14.El Miedany Y, Youssef S, Mehanna A, Shebrya N, Gamra SA, El Gaafary M (2008) Defining disease status in ankylosing spondylitis: validation and cross-cultural adaptation of the Arabic bath ankylosing spondylitis functional index (BASFI), the bath ankylosing spondylitis disease activity index (BASDAI), and the bath ankylosing spondylitis global score (BASG). Clin Rheumatol 27(5):605–612PubMedCrossRefGoogle Scholar
- 15.Hidding A, van Santen M, De Klerk E, Gielen X, Boers M, Geenen R, Vlaeyen J, Kester A, van der Linden S (1994) Comparison between self-report measures and clinical observations of functional disability in ankylosing spondylitis, rheumatoid arthritis and fibromyalgia. J Rheumatol 21(5):818–823PubMedGoogle Scholar
- 17.Claudepierre P, Sibilia J, Goupille P, Flipo RM, Wendling D, Eulry F, Clerc D, Berthelot JM, Vergne P, Roudot-Thoraval F, Larget-Piet B, Chevalier X (1997) Evaluation of a French version of the bath ankylosing spondylitis disease activity Index in patients with spondyloarthropathy. J Rheumatol 24(10):1954–1958PubMedGoogle Scholar
- 24.Cardiel MH, Londono JD, Gutierrez E, Pacheco-Tena C, Vazquez-Mellado J, Burgos-Vargas R (2003) Translation, cross-cultural adaptation, and validation of the bath ankylosing spondylitis functional index (BASFI), the bath ankylosing spondylitis disease activity index (BASDAI) and the Dougados functional index (DFI) in a Spanish speaking population with spondyloarthropathies. Clin Exp Rheumatol 21(4):451–458PubMedGoogle Scholar
- 26.Rostom S, Benbouaaza K, Amine B, Bahiri R, Yacoub YI, Alla SAO, Abouqal R, Hajjaj-Hassouni N (2010) Psychometric evaluation of the Moroccan version of the bath ankylosing spondylitis functional index (BASFI) and bath ankylosing spondylitis disease activity index (BASDAI) for use in patients with ankylosing spondylitis. Clin Rheumatol 29(7):781–788PubMedCrossRefGoogle Scholar
- 29.Spoorenberg A, van der Heijde D, de Klerk E, Dougados M, de Vlam K, Mielants H, van der Tempel H, van der Linden S (1999) Relative value of erythrocyte sedimentation rate and C-reactive protein in assessment of disease activity in ankylosing spondylitis. J Rheumatol 26(4):980–984PubMedGoogle Scholar
- 31.Baysal O, Durmus B, Ersoy Y, Altay Z, Senel K, Nas K, Ugur M, Kaya A, Gur A, Erdal A, Ardicoglu O, Tekeoglu I, Cevik R, Yildirim K, Kamanli A, Sarac AJ, Karatay S, Ozgocmen S (2011) Relationship between psychological status and disease activity and quality of life in ankylosing spondylitis. Rheumatol Int 31(6):795–800Google Scholar
- 32.Dougados M, Moore A, Yu S, Gitton X (2007) Evaluation of the patient acceptable symptom state in a pooled analysis of two multicentre, randomised, double-blind, placebo-controlled studies evaluating lumiracoxib and celecoxib in patients with osteoarthritis. Arthr Res Ther 9(1):R11CrossRefGoogle Scholar