The prevalence of Escherichia coli O157:H7 fecal shedding in feedlot pens is affected by the water-to-cattle ratio: A randomized controlled trial
Fig 5
The change in the proportion of cattle fecal pats positive for E. coli O157:H7 over time.
(A) The proportion of fecal pats positive for E. coli O157:H7 by control and intervention groups, pre- and post-intervention. Bars indicate 95% confidence interval after adjusting the standard errors for clustering within pens. (Number of fecal samples = 2719) (B) Box-plots of the (unadjusted) change in within-pen prevalence of positive fecal pats within each pen (post- minus pre-intervention prevalence). (Number of fecal samples = 2719).