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Figure 3 | Health and Quality of Life Outcomes

Figure 3

From: Construct validity and responsiveness of the simplified version of Ankylosing Spondylitis Disease Activity Score (SASDAS) for the evaluation of disease activity in axial spondyloarthritis

Figure 3

ROC curves illustrating the relationship between sensitivity and complement of specificity (100 specificity) in axial SpA for the composite disease activity indices (ASDAS-ESR, ASDAS-CRP and SASDAS) and BASDAI, by using changes of global disease activity as external indicator. The area under the ROC curve (AUC) can be interpreted as the probability of correctly identifying patients improved form those not-improved. A line that runs diagonally across the figure from lower left upper right will have an area of 0.5 which represent an instrument not able to discriminate different status of disease activity.

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Health and Quality of Life Outcomes

ISSN: 1477-7525

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