Assessment of work instability in spondyloarthritis: a cross-sectional study using the ankylosing spondylitis work instability scale

Objectives. Work status is an important outcome in SpA. The objective was to assess work instability and its determinants in a cohort of patients with SpA, using the AS-work instability scale (AS-WIS). Methods. We performed a cross-sectional monocentre study. Patients were definite SpA patients with paid work. Work instability was measured by the AS-WIS. Its determinants were assessed by correlations with SpA scores (BASDAI, BASFI and patient's global assessment) and patients with low work instability (AS-WIS score