Final multivariable model of lot-level factors associated with the within-lot prevalence of Salmonella in feces of commercial feedlot cattle that were sampled as they were first treated for apparent respiratory diseasea.
|Factors||P-values||Odds Ratios (OR)||95% Confidence Intervals for OR|
|Percentageb of treated cattle within a lot|
|that were subsequently retreated||< 0.01||18.8||3.35, 105.63|
|Percentageb of mortalities within a lot that occurred in a hospital pen||= 0.03||1.86||1.16, 2.97|
|Month the lot was primarily sampled||< 0.01||–||–|
|September||- - - - - - - -Reference- - - - - - - -|