title: 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.
abstract: 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.
authors.affiliation: Department of Immunology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Katayoon
authors.initials: K
authors.lastname: Bidad
authors.forename: Sasan
authors.initials: S
authors.lastname: Fallahi
authors.forename: Mahdi
authors.initials: M
authors.lastname: Mahmoudi
authors.forename: Ahmadreza
authors.initials: A
authors.lastname: Jamshidi
authors.forename: Elham
authors.initials: E
authors.lastname: Farhadi
authors.forename: Alipasha
authors.initials: A
authors.lastname: Meysamie
authors.forename: Mohammad Hossein
authors.initials: MH
authors.lastname: Nicknam
mesh_terms: D000328:Adult; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D007492:Iran; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000175:diagnosis* / Q000503:physiopathology / Q000523:psychology; D011795:Surveys and Questionnaires; D014177:Translations
references.citation: Z Rheumatol. 2003 Jun;62(3):251-63
references.pmid: 12827402
references.citation: J Rheumatol. 1994 Sep;21(9):1694-8
references.pmid: 7799351
references.citation: Rheumatol Int. 2011 Jun;31(6):795-800
references.pmid: 20221605
references.citation: Arthritis Rheum. 2007 Feb 15;57(1):133-9
references.pmid: 17266072
references.citation: Arthritis Rheum. 1984 Apr;27(4):361-8
references.pmid: 6231933
references.citation: J Rheumatol. 1999 Apr;26(4):966-70
references.pmid: 10229429
references.citation: Arthritis Rheum. 2002 Jun 15;47(3):242-8
references.pmid: 12115152
references.citation: Br J Rheumatol. 1996 Jan;35(1):66-71
references.pmid: 8624626
references.citation: Tunis Med. 2009 Aug;87(8):527-30
references.pmid: 20180357
references.citation: J Rheumatol. 1994 Dec;21(12):2286-91
references.pmid: 7699630
references.citation: Clin Rheumatol. 2008 May;27(5):605-12
references.pmid: 18180979
references.citation: Clin Exp Rheumatol. 2007 Nov-Dec;25(6 Suppl 47):147-52
references.pmid: 18021521
references.citation: Clin Rheumatol. 2005 Feb;24(1):41-7
references.pmid: 15365877
references.citation: Curr Opin Rheumatol. 2008 Jul;20(4):398-403
references.pmid: 18525351
references.citation: Clin Exp Rheumatol. 2003 Jul-Aug;21(4):451-8
references.pmid: 12942696
references.citation: J Rheumatol. 1999 Apr;26(4):980-4
references.pmid: 10229432
references.citation: Scand J Rheumatol Suppl. 1999;111:1-9
references.pmid: 10503553
references.citation: J Rheumatol. 1994 May;21(5):818-23
references.pmid: 8064720
references.citation: Arthritis Res Ther. 2007;9(1):R11
references.pmid: 17266764
references.citation: Clin Rheumatol. 2010 Aug;29(8):849-54
references.pmid: 20306214
references.citation: J Rheumatol. 1994 Dec;21(12):2281-5
references.pmid: 7699629
references.citation: Z Rheumatol. 2003 Jun;62(3):264-73
references.pmid: 12827403
references.citation: Clin Rheumatol. 2000;19(6):464-9
references.pmid: 11147757
references.citation: Ann Rheum Dis. 2003 Sep;62(9):812-6
references.pmid: 12922951
references.citation: Z Rheumatol. 1999 Aug;58(4):218-25
references.pmid: 10502022
references.citation: Best Pract Res Clin Rheumatol. 2008 Aug;22(4):709-23
references.pmid: 18783746
references.citation: J Rheumatol. 1997 Oct;24(10):1954-8
references.pmid: 9330938
references.citation: Scand J Rheumatol Suppl. 1999;111:10-6
references.pmid: 10503554
references.citation: Clin Rheumatol. 2010 Jul;29(7):781-8
references.pmid: 20383548
references.citation: Rheumatol Int. 2005 May;25(4):280-4
references.pmid: 14730386
references.citation: Rheumatology (Oxford). 2006 Oct;45(10):1288-93
references.pmid: 16595514
references.citation: Arthritis Rheum. 2008 Apr 15;59(4):553-60
references.pmid: 18383418