Fig 1. Binary logistic regression model of exposure factors for the colonization of the human gastrointestinal tract.

Potential risk factors discussed in the literature were included in the logistic regression model and adjusted ORs* were calculated with a confidence interval (CI^†) of 95%. The x-axis is displayed logarithmically. P-values were calculated using the chi-square test (^‡). Results were significant if a p-values less than 0.05 was detected or the 95%-CI does not include 1 and were indicated in bold. ^§ raw minced meat, raw milk and raw milk products; ^¶ Contact with excrement or saliva of animals, striking of animals.