Table 1

Predicting the Risk of Lyme Disease: Habitat Suitability for Ixodes scapularis in the North Central United States

Marta Guerra*, Edward D. Walker†, Carl Jones*, Susan Paskewitz‡, M. Roberto Cortinas*, Ashley Stancil‡, Louisa Beck§, Matthew Bobo§, and Uriel Kitron*

Author affiliations: *University of Illinois College of Veterinary Medicine, Urbana, Illinois, USA; †Michigan State University, East Lansing, Michigan, USA; ‡University of Wisconsin, Madison, Wisconsin, USA; §NASA Ames Research Center, Moffett Field, California;

Main Article

Significant environmental variables to determine favorable habitat for Ixodes scapularis using discriminant analysis

Groups (sample size)
	0 vs. 1,2,3 (47 vs. 65)		0,1 vs. 2,3 (63 vs. 69)		0 vs. 1 vs. 2 vs. 3 (47 vs. 16 vs. 24 vs. 25)
Variable	Wilk’s lambda	Disc F(x)	Wilk’s lambda	Disc F(x)	Wilk’s lambda	Disc F(x)1	Disc F(x)2
Forest type	0.784	0.552	0.789	0.789	0.754	0.665	-0.747
Soil order	0.618	0.521	0.699	0.542	0.569	0.633	0.774
Land cover	0.586	0.387
Soil texture	0.564	0.381
Bedrock	0.525	0.518
Eigenvalue	0.904		0.431		0.681		0.045
Canonical correlation coefficient	0.689		0.549		0.636		0.207
% correctly classified	85.7		78.6		51.8

Main Article

Page created: July 14, 2010

Page updated: July 14, 2010

Page reviewed: July 14, 2010

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