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Table 3 DA results for tracts in identifiable clusters compared to the tracts outside of the cluster tracts. The seven variables are significant at the .001 level using the Wilks' Lambda test to enter the variable in the model. The Eigenvalue is .186 and the Canonical Correlation is .396 for this model.

From: Environmental and social determinants of human risk during a West Nile virus outbreak in the greater Chicago area, 2002

Variable Standardized Discriminant Function Coefficient Mean for tracts
   Outside clusters Within clusters
In Chicago Lake Plain .884 .74 .93
Race as % white .499 52% 82%
Median Age .318 33.4 yrs 40.0 yrs
Housing from 1950–1959 .293 17% 29%
Vegetation .238 20.9% 27.0%
Median Household Income .232 $46,931 $66,522
Housing unit per Km2 -.232 2.07 units/km2 1.17 units/km2
Bird distance -.192 2029 m 895 m