TABLE 5.

Odds ratios for association of AMR gene groups, antimicrobials, and plasmid replicons with source or location (only associations with P values of <0.05 are shown)^a

Characteristic	Serotype	Source/location favored by OR	OR	Uncorrected P value
Source
Gene
aac(3)-IIa	Typhimurium	Human	Infinity (only in humans)	0.009
floR	Typhimurium	Human	5.42	0.021
aph(3″)-Ia	Newport	Bovine	0.0831	0.019
Antimicrobial
CHL	Typhimurium	Human	5.42	0.021
NAL	Typhimurium	Human	Infinity (only in humans)	0.022
SXT	Typhimurium	Human	Infinity (only in humans)	0.004
TET	Typhimurium	Human	Infinity (all human isolates)	0.005
STR	Dublin	Human	9.28	0.030
Plasmid
IncA/C2	Typhimurium	Human	8.18	0.048
ColpVC	Newport	Bovine	0 (found in all bovine isolates)	0.024
Geographic location
Gene
blaTEM-1D	Typhimurium	WA	4.60	0.045
aph(3″)-Ia	Newport	NY	0.172	0.049
aadB	Dublin	WA	Infinity (found only in WA)	0.005
cmlA	Dublin	WA	Infinity (found only in WA)	0.005
Antimicrobial
NAL	Typhimurium	WA	Infinity (found only in WA)	0.020
STR	Typhimurium	WA	8.51	0.042
SX	Typhimurium	WA	10.8	0.019
SXT	Typhimurium	WA	9.36	0.042
STR	Dublin	NY	0.052	0.008
Plasmid
IncI1	Typhimurium	NY	0.0602	0.003
IncP	Typhimurium	WA	Infinity (found only in WA)	0.046
IncFII(S)	Dublin	NY	0 (present in all NY isolates)	0.001

^aAn odds ratio (OR) of infinity or 0 includes a short statement (in parentheses) that indicates which source or location was the driver for that OR (e.g., “only in humans” indicates that the given gene/phenotype/plasmid replicon was found in only human isolates and in none of the bovine isolates). WA, Washington State; NY, New York State. Values in boldface were significant (P < 0.05) after a Holm-Bonferroni correction was applied to the respective analysis.