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Volume 8, Number 3—March 2002


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*Comments to Author 
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

Table 2

Significant environmental variables in the logistic regression model.

Variable Beta S.E. P value Odds
ratio Lower Upper
Land cover 0.85 0.40 0.03 2.36 1.08 5.15
Soil order 0.42 0.18 0.02 1.52 1.07 2.16
Bedrock 1.78 0.73 0.01 5.94 1.42 24.78
Soil texture 0.76 0.26 0.004 2.13 1.27 3.57
Constant -9.06 1.95

Main Article