Cluster analysis of computed tomography identifies duration-associated abdominal fat deposition in type 2 diabetes mellitus

Figure 3 K-means clustering results of the pre-period group, type 2 diabetes mellitus with disease duration < 5 years group, and type 2 diabetes mellitus with disease duration ≥ 5 years group using R. A-C: When k = 2, the decline rate of within-cluster sum of squares slows down and the average silhouette coefficient is the highest. Set as 2 the final number of clusters, and there is no obvious mixing between the two clusters; D-F: When k = 3, the decline rate of WSS significantly slows down and the average silhouette coefficient is the highest. Set 3 as the final number of clusters, and there is no obvious mixing between the three clusters. G-I: When k = 4, the decline rate of WSS significantly slows down and the average silhouette coefficient is the highest. Set 4 as the final number of clusters, and there is no obvious mixing between the four clusters.