Figure 4.

Comparison of Harrell’s C-index for the delta neutrophil index (DNI) for the prediction of 30-day mortality according to time (A); and comparison of the area under the curve (AUC) for the DNI when predicting the development of multiple organ dysfunction syndrome (MODS) according to time (B). The Harrell’s C-index and AUC showed discriminative abilities for the risk stratification of 30-day mortality and development of MODS (statistical information is shown in supplements 2 and 3). (A) *Harrell’s C-index of DNI at 12 h was statistically superior to lactate, prothrombin time, and tCO₂ on emergency department admission (p < 0.05). (B) *AUC of DNI at 12 h was statistically superior to lactate on emergency department admission and Injury Severity Score (p < 0.05). ^¶AUC of DNI at 12 h was statistically inferior to the Sequential Organ Failure Assessment score at 24 h after emergency department admission (p < 0.05).