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. 2020 Sep 7;10:14681. doi: 10.1038/s41598-020-71466-0

Figure 4.

Figure 4

Creatinine concentration cut-off value associated with increasing risk of death in ROC analysis. (n = 1638 patients/108 died). Legend: sensitivity (True Positive Rate), 1-specificity (False Positive Rate); scale is in decimals of sensitivity and specificity; interval every 0.2, i.e. 20%; green line—optimum cut-off point (max. Youden’s index = 0,31, cut-off point: 105), blue line—ROC curve with AUC 0.68, 95%CI 0.613 -0.741, SE 0.03, p < 0.001, red line—classification due to chance with AUC 0.5. Abbreviations: ROC—receiver operating characteristic, AUC—area under the curve, SE—standard error. Method: AUC, ROC and SE analyzes performed according to Hanley and McNeil10.