Fig. 4

Comparison of diagnostic capacity. The AUC, IDI, and NRI for the combined assessment of diagnostic capacity when incorporating the GBTM lactate groups, peak lactate level, lactate clearance and lactate AUC into the established model (SOFA score + initial lactate). All P values represent comparisons with the established model (SOFA score + initial lactate). AUC, area under curve; IDI, integrated discrimination improvement; GBTM, group-based trajectory modeling; NRI, net reclassification improvement; SOFA score, Sequential Organ Failure Assessment score