Fig. 4

The 7 immune-related genes (IRGs) signature's prognostic performance in the training cohort and the validation cohort. a The median value and distribution of the risk scores calculated by this signature in the training cohort; b the median value and distribution of the risk scores calculated by this signature in the validation cohort; c Kaplan–Meier curves depicting the 28 days survival based on the risk score in sepsis patients in the training cohort; d Kaplan–Meier curves depicting the 28 days survival based on the risk score in sepsis patients in the Validation cohort; e the prognostic accuracy of the risk score is confirmed by the AUC of ROC curves Kaplan–Meier curves depicting the 28 days survival based on the risk score in sepsis patients in the training cohort; f the prognostic accuracy of the risk score is confirmed by the AUC of ROC curves Kaplan–Meier curves depicting the 28 days survival based on the risk score in sepsis patients in the validation cohort. AUC Area under curve, ROC Receiver operating characteristic curve