Table 6.

Relationships among super-shedder status (yes/no), sampling (1 vs 2) and resistance to any antimicrobial evaluated^y for fecal isolates of E. coli O157:H7 collected in Alberta Canada in 2007 from generalized linear mixed model analysis^z

Variable	Odds Ratio	95% C.I.	Significance
Sampling	1.51	0.48 – 4.78	P > 0.48
Super-shedder	0.94	0.31 – 2.91	P > 0.69

^yResistance detected for 17/474 isolates for antimicrobials including ampicillin, neomycin, streptomycin, sulfasoxazole, sulfamethoxazole/trimethroprim and tetracycline.

^zPen as random effect, covariance parameter estimate = 1.82, with standard error = 2.16.