![]() ![]() We used the Consensus-based Standards for the Selection of Health Status Measurement Instruments (COSMIN) to assess the methodological quality and measurement property of included instruments. The Agency for Healthcare Research and Quality (AHRQ) checklists was used to assess the risk of bias for each included study. ![]() Data extraction and analyses were conducted according to the Cochrane standards. Secondary outcomes included internal consistency, structural validity, responsiveness and so on. Primary outcomes included test-retest reliability and construct validity. ![]() Randomized controlled trials (RCTs), cohort trials, and cross-sectional trails were retrieved by searching seven databases. This systematic review aims at examining the validity and reliability of QoL questionnaires in patients with AS/nr-axSpA. Patients who suffered from ankylosing spondylitis (AS) or non-radiographic axial spondyloarthritis (nr-axSpA) often have poor quality of life (QoL) and there has been a substantial increase in research on acceptable questionnaires for assessment of QoL. ![]()
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