Figure 3.

Comparison of the area under receiver-operating characteristics the curve for predicting the in-hospital mortality (modified severity scores vs non-modified severity scores). APACHE II = Acute Physiology And Chronic Health Evaluation II score calculated in the intensive care unit, AUROC = area under the receiver-operating characteristics curve, CI = confidence interval, m-APACHE II = APACHE II modified by the lactate dehydrogenase to albumin ratio, MEDS = mortality in emergency department sepsis score, m-MEDS = MEDS modified by the lactate dehydrogenase to albumin ratio. The AUROCs of the models were calculated and tested mutually for significance by DeLong equality tests (p1 = P value for the AUROC of each variable; p2 = P value for equality compared to the non-modified variable).