TABLE 4.

Parameter estimates for cecal content levels at day 21 (log₁₀ CFU/g cecal content, 95% CI) of CTX-M-1-E. coli (n = 75) using a linear regression model.

Variable	Estimate CTX-M-1-E. coli (95% CI)
Room 1, pen Seeder/C1 (intercept)	3.95 (0.93 to 6.98)
Room 2	−0.52 (−0.91 to−0.13)
Pen C21	−1.17 (−1.91 to −0.43)
Pen C22	−2.28 (−3.23 to −1.33)
Pen C23	−1.85 (−2.95 to −0.75)
Pen C24	−2.01 (−2.64 to −1.39)
Pen C25	−0.86 (−1.40 to −0.33)
Pen C26	−0.59 (−1.52 to 0.33)
Pen C27	0.34 (−0.77 to 1.46)
Pen C28	−2.69 (−3.49 to−1.88)
Bodyweight day of hatch (day 0)	0.08 (0.01 to 0.15)