Ankylosing Spondylitis

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Ankylosing spondylitis(AS), a chronic rheumatic disease that most occurred in male young adult. AS make patients suffered from spinal back pain and stiffness by inflammation and end-up with spinal deformity. In the end, spinal deformity will affect many part of daily life of patient due to reduced working capacity.

At the consencus meeting in the assessments in Ankylosing Spondylitis (ASAS) Working Group, by International Workshop on New Treatment Strategies in Ankylosing Spondylitis in Berlin 2002[1-3]. They all agreed that BASDAI(Bath Ankylosing Spondylitis Disease Activity Index), BASFI(Bath Ankylosing Spondylitis Functional Index) and BASG(Bath Ankylosing Spondylitis Global assessment) are tool for evaluate disease activity, functional capability and global being of AS patient. BASDAI, BASFI and BASG are developed in the Royal National Hospital for Rheumatic Diseases in Bath, UK[4-5]. In clinical practice, BASDAI, BASFI and BASG, has been shown that it easy to self assessment and compared with disease activity and function in ankylosing spondylitis patient. Also, the VAS(Visual Analog Scale) in the questionnaires was 10 cm. long, that represent about the best to the worst of patient feeling.

There was many country that have to cross-culturally adaptation of these instrument, Taiwan[6], Korea[7], Egypt[8], Denmark[9] etc. Because of there was some difference in culture and life-style in Thai’s patient, so the aim of this study was to assess the reliability and validity of Thai version of these three instrument: BASDAI, BASFI and BASG to be used by Thai patients who suffering from AS.

Materials and methods

Developing the Thai version of the BASDAI, BASFI and BASG

The original versions of BASDAI, BASFI and BASG was perm...

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...ses. Comparisons among AS patients with symptom of arthritis, symptom of fatigue, occiput to wall distance, chest expansion, Schober test, finger to ground distance, ESR and CRP with BASDAI, BASFI and BASG was evaluated with Pearson correlation. Significant was set at p<0.05. for validity the Thai version instrument, and used Cronback’s alpha for internal consistency and a minimum of 0.70 was usually required as an acceptable level of agreement.

Results

38 patients were enrolled, the demographics data as table 1. Most of AS patients were male(92.1%) mean age was 35.03 ± 11.57 years and duration of symptom was 9.29 ± 7.77 years. There were 15 patients had arthritis symptom (39.5%) and 11 patients had fatigue symptom (28.9%). Mean laboratory studies was 47.34 ±37.32 for ESR and 31.04 ± 46.62 for CRP. There was one patient who did not have CRP result in this study.

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