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Table 1 Ipop global clustering. Case count correlations for the geographic distribution of invasive and late-stage prostate or breast cancer incidence within or among selected areal units of analysis, Connecticut, 1988–92.

From: Lumping or splitting: seeking the preferred areal unit for health geography studies

Areal Unit Within % Among % p-value
Prostate Cancer Incidence    
   Block Group 60.0 40.0 0.0002
   Tract 60.1 39.9 0.0002
   Town 57.4 42.6 0.0002
Breast Cancer Incidence    
   Block Group 72.1 27.9 0.0002
   Tract 63.7 36.3 0.0002
   Town 75.8 24.2 0.0002
Late Stage Prostate Cancer Incidence    
   Block Group 99.7 0.3 0.0008
   Tract 87.9 12.1 0.2190
   Town 77.0 23.0 0.2740
Late Stage Breast Cancer Incidence    
   Block Group 100.7 -0.7 <0.0001
   Tract 100.2 -0.2 0.0002
   Town 89.1 10.9 0.0846