Authors: Katayoon Bidad Sasan Fallahi Mahdi Mahmoudi Ahmadreza Jamshidi Elham Farhadi Alipasha Meysamie Mohammad Hossein Nicknam
Publish Date: 2011/11/20
Volume: 32, Issue: 11, Pages: 3613-3618
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’ wellbeing 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 Fortyeighthour test–retest agreement showed good reliability interclass correlation coefficient ICC for BASDAI was 093 CI at 95 090–095 for BASFI was 096 CI at 95 094–097 and for PASS was 087 CI at 95 079–092 Chronbach’s alpha was 095 096 and 087 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 BASG BASFI and BASMI A significant correlation was also found between BASFI and occiputtowall distance mentumtosternum distance chest expansion fingertofloor distance number of swollen joints number of enthesites nocturnal back pain total back pain BASG BASDAI and BASMI Patients who answered “no” to PASS found their condition unsatisfactory reported significantly increased pain scores patient global disease activity scores BASG 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
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