Clin Exp Rheumatol
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Multicenter Study
Patient reported outcomes in ankylosing spondylitis: development and validation of a new questionnaire for functional impairment and quality of life assessment.
To assess validity, reliability and sensitivity to change of a new questionnaire for assessment of functional disability and quality of life in ankylosing spondylitis (AS) patients. ⋯ The CASQ is a reliable and valid tool for assessment of functional impairment and quality of life in AS. The CASQ is well accepted by patients, sensitive to change, easy to administer and score. The CASQ-FI and CASQ-QoL questionnaires can either be used and scored separately to assess for functional disability as well as quality of life or in combination as tools to assess for both parameters.