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Association of carcass outside contamination and E. coli O157: H7 status of the risk factors
| Risk factors | p-value | Odds Ratio | 95% Confidence interval for the Odds Ratio |
|---|---|---|---|
| Skin swab | 0.999 | 0.928 | 0.868–0.991 |
| Fecal sample | 0.999 | 0.942 | 0.888–0 .999 |
| Knife swab | 1.000 | 0.986 | 0.958–1.014 |
