Defining Bath Ankylosing Spondylitis Disease Activity Index Cut-off Values for Disease Activity States in a Multinational European Cohort of Patients With Axial Spondyloarthritis
OBJECTIVE: The Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) is widely used for assessing disease activity in patients with axial spondyloarthritis (axSpA), particularly in settings where markers of inflammation are unavailable. As no consensus on BASDAI cut-off values exists for disease activity states in axSpA, we aimed to develop and validate such cut-offs against external criteri
