Table 6. Contrasts from logistic regression models^a,b,c (Table 5) assessing the statistically significant associations between source type and the occurrence of select antimicrobial resistance genes in phenotypically resistant Escherichia coli isolates collected from wildlife, swine manure pits, and environmental sources in southern Ontario, 2011−2013 (n = 200, dataset A).

	tet(B) a , b		bla TEM-1 b		sul2 c
Contrast	OR (95%CI)	p-value	OR (95%CI)	p-value	OR (95%CI)	p-value
Water vs. wildlife	3.23 (0.99−10.52)	0.051	1.91 (0.59−6.16)	0.280	3.05 (1.09−8.52)	0.033
Other environmentald vs. wildlife	1.12 (0.51−2.48)	0.772	0.42 (0.19−0.90)	0.025	0.81 (0.38−1.75)	0.600
Other environmentald vs. water	0.35 (0.11−1.09)	0.071	0.22 (0.06−0.73)	0.014	0.27 (0.09−0.75)	0.012

^a Adjusted for confounding by year of sampling.

^b Site of sampling was retained as a random intercept.

^c The random intercept to account for clustering by site or animal was not retained in the model, thus ordinary logistic regression was used.

^d Includes soil and dumpster isolates.