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

Figure 2 Cluster samples distribution comparison between the full cohort (n = 15904) and the machine perfusion subgroup (n = 544). The machine perfusion (MP) subgroup shows notable enrichment in cluster 6 (40.0% vs 22.9% in full cohort) and cluster 5 (17.8% vs 15.1%), with corresponding under-representation in clusters 1 (7.5% vs 17.5%) and 4 (6.6% vs 11.6%). Cluster distribution in the full cohort: Cluster 1 n = 2797 (17.5%), cluster 2 n = 2826 (17.7%), cluster 3 n = 2370 (14.9%), cluster 4 n = 1854 (11.6%), cluster 5 n = 2402 (15.1%), cluster 6 n = 3655 (22.9%); In the MP subgroup: Cluster 1 n = 41 (7.5%), cluster 2 n = 59 (10.8%), cluster 3 n = 93 (17.0%), cluster 4 n = 36 (6.6%), cluster 5 n = 97 (17.8%), cluster 6 n = 218 (40.0%). MP: Machine perfusion.