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Volume 5, Number 6—December 1999


Epidemiologic Studies of Cyclospora cayetanensis in Guatemala

Caryn Bern*†Comments to Author , Beatriz Hernandez†, Maria Beatriz Lopez†, Michael J. Arrowood*, Maricruz Alvarez de Mejia†, Ana Maria de Merida†, Allen W. Hightower*, Linda Venczel‡, Barbara L. Herwaldt*, and Robert E. Klein†
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †Universidad del Valle, Guatemala City, Guatemala; and ‡University of North Carolina, Chapel Hill, North Carolina, USA

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Table 4

Multivariable logistic regression model of risk factors for Cyclospora infection among 68 cases and 120 controls

Characteristic OR (95% CI)a p
Drank untreated water 4.2 (1.4, 12.5) 0.009
Chickens 1.9 (1.0, 3.7) 0.054
Contact with soil among 19.8 (2.2, 182) 0.008

children <2 years old
Contact with soil among 1.4 (0.6, 2.9) nsc
persons > 2 years oldb

aModel adjusted for age category (<2 years, >2 years).
bOdds ratio for persons 2 years or older calculated as (OR for persons <2) *(OR for interaction term for soil contact with age <2). p value for the interaction term = 0.03.
cns = not significant.

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