Figure 1From: Construct validity and responsiveness of the simplified version of Ankylosing Spondylitis Disease Activity Score (SASDAS) for the evaluation of disease activity in axial spondyloarthritisHistograms demonstrating central-tendency estimation and distributions of SASDAS (A) and ASDAS ESR/CRP composite indices (B-C), BASDAI (D), BASFI (E) and EQ-5D (F). The bar on the left of each group represents the number of subjects with a score of 0 (floor effect). The bar on the right represents the number of subjects with a maximum possible score (ceiling effect).Back to article page