Fig. 1

Receiver operation characteristic curve for patient mortality using qSOFA alone and qSOFA + lactate score. The combined qSOFA and lactate level score has a higher AUROC than qSOFA alone (AUROC = 0.754 vs. 0.717, p = 0.039, respectively). AUROC = area under receiver operating curve, qSOFA = quick sequential organ failure assessment, SOFA = sequential organ failure assessment