Figure 3.

The ROC curve analysis of APACHE II score, lactic acid, septic shock, AFR, and quadruple index for the prognostic value of 28-day mortality in patients with sepsis. ROC: receiver operating characteristic; AUC: area under the curve; APACHE II: Acute Physiology and Chronic Health Evaluation; AFR: albumin-to-fibrinogen ratio; quadruple index includes APACHE II score, lactic acid, septic shock, and AFR;