Table 3.

ROC of the different scoring systems within training set for predicting the mortality of sepsis patients.

Scoring system	SE	AUROC	Youden's index	sensitivity	specificity	PPV	NPV	PLR	NLR
qSOFA + SII	0.028	0.840 (0.787–0.884)	0.583 (0.461–0.676)	0.710 (0.588–0.813)	0.873 (0.814–0.919)	0.690 (0.594–0.772)	0.883 (0.839–0.916)	5.584 (3.675–8.486)	0.332 (0.229–0.483)
qSOFA	0.031	0.751 (0.691–0.804)	0.470 (0.349–0.597)	0.696 (0.573–0.801)	0.775 (0.705–0.835)	0.552 (0.473–0.628)	0.865 (0.816–0.902)	3.086 (2.247–4.238)	0.393 (0.273–0.566)
SOFA	0.040	0.654 (0.590–0.714)	0.287 (0.163–0.400)	0.420 (0.302–0.545)	0.867 (0.807–0.914)	0.558 (0.441–0.669)	0.789 (0.753–0.822)	3.161 (1.974–5.062)	0.669 (0.542–0.824)

Abbreviations: AUROC, area under the ROC curve; SE, standard error; PPV, positive predictive value; NPV, negative predictive value; PLR, positive likelihood ratio; NLR, negative likelihood ratio.

In Brackets: 95% confidence intervals.