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. 2013 Jul 2;8(7):e66907. doi: 10.1371/journal.pone.0066907

Figure 2. Receiver operating characteristic curve analysis of cystatin C cut point for the presence of lower limb ischemia.

Figure 2

Area under curve = 0.794 (P<0.001), 95% confidence interval: 0.765–0.823; Identified cystatin C cut point = 1.2 mg/L, Youden index = 0.44; Sensitivity: 76%; Specificity: 68%.