Machine perfusion distribution across clinical phenotypes in kidney transplantation: A national cohort study using unsupervised clustering

Figure 8 Graft survival Kaplan-Meier curves for the full cohort (n = 15904) and the machine perfusion subgroup (n = 544). Time zero represents the date of transplantation, with patients followed for up to 5 years. The y-axis shows overall survival probability. Numbers at risk are displayed below each panel. Survival differences between clusters were evaluated using the log-rank test; P values are displayed. Cluster 2 exhibited the steepest graft survival decline in both datasets. The machine perfusion subgroup showed the highest graft failure rate, with all events occurring within the first 2.07 years post-transplant. A: The full cohort; B: The machine perfusion subgroup. MP: Machine perfusion.