Circulating stem/progenitor cell biomarkers and prognosis in critically ill patients with gastrointestinal bleeding

Figure 1 Discrimination and calibration curve analysis of the combined model. A: Receiver operating characteristic curve for predicting 28 days mortality rate using a combination model; B: Calibration curve of composite model. ROC: Receiver operating characteristic; AUC: Area under the receiver operating characteristic curve.

Figure 2 Kaplan-Meier curve of cumulative survival probability stratified by the median endothelial progenitor cell count. KDR: Kinase insert domain receptor; lnEPC: Natural log-transformed endothelial progenitor cell count.