TABLE 4.
Associations between management and climate factors and water coliform counts, with the feedlot effect controlled, in cattle feed samples in 661 pens on 68 feedlots sampled between May and August 2001
| Variable | β | SE | Pa | 95% confidence interval |
|---|---|---|---|---|
| Intercept | 6.1 | 0.89 | ||
| Mo of sampling | ||||
| May | Referent | |||
| June, July, or August | 0.56 | 0.17 | 0.001 | 0.23, 0.9 |
| Water pH | −0.26 | 0.12 | 0.03 | −0.49, −0.03 |
| Water total solids | 0.0009 | 0.0002 | 0.000 | 0.0004, 0.001 |
a
Wald chi-square statistics: overall R2, 0.085. Variance parameter estimates: feedlot, 0.5; residual, 0.75; fraction due to feedlot, 0.31.