Example of the Cluster Variables Platform
The Diabetes.jmp sample data table contains ten baseline variables used in modeling disease progression. In this example, you cluster the continuous baseline variables.
1. Select Help > Sample Data Library and open Diabetes.jmp.
2. Select Analyze > Clustering > Cluster Variables.
3. Select the columns Age through Glucose except for Gender (Age, BMI, BP, Total Cholesterol, LDL, HDL, TCH, LTG, and Glucose) and click Y, Columns.
The Gender column cannot be included because Cluster Variables requires numeric continuous variables.
4. Click OK.
Figure 16.2 Cluster Variables Report for Diabetes Data
The Cluster Summary report shows that the variables were grouped into three clusters:
• Cluster 1 consists of BMI, HDL, TCH, and LTG, as shown in the Cluster Members report. The Cluster Summary report shows that TCH is the most representative variable for Cluster 1 and that for the variables in Cluster 1, 62.8% of the variation is explained by the first principal component.
• Cluster 2 consists of Total Cholesterol and LDL. The Cluster summary report shows that Total Cholesterol is the most representative variable for Cluster 2 and that for the variables in Cluster 2, 94.8% of the variation is explained by the first principal component.
• Cluster 3 consists of Age, BP, and Glucose. The Cluster Summary report shows that the most representative variable is BP and that for the variables in Cluster 3, 56.2% of the variation is explained by the first principal component.