TABLE 3.
Results of mixed linear regression model examining the influence of antimicrobial resistance, feeding group and sampling site on lg2 ZnCl2 MIC (dependent factor) for 179 E. coli with pig as random variable.
| Factor | Regression coefficient | p-value | 95% CI |
| Intercept | 8.343 | <0.001 | 8.156–8.530 |
| Mucosa | 0.007 | 0.926 | −0.135–0.149 |
| Digesta | 0.064 | 0.365 | −0.075–0.203 |
| Feces | 0b | 0.631a | . |
| HZG | 0b | . | . |
| CG | −0.327 | 0.006 | −0.548–(−0.106) |
| Susceptible | −0.105 | 0.119 | −0.236–0.027 |
| Resistant | 0b | . | . |
HZG, high zinc group; CG, control group; CI, Confidence interval. aGlobal p-value determined for the three sampling sites. bThis parameter is set to zero because it is redundant. Bold numbers indicate a significant p-value.