Table 5.
The adjusted odds and robust 95% CI of RHF controlling for the likelihood of death from digestive disorders in 10 Canadian and 5 US feedlots determined using multivariable logistic regression, controlling for year of placement
| Variable | Category | Canadaa | United Statesb | ||
|---|---|---|---|---|---|
| OR (95% CI) | P‐Value | OR (95% CI) | P‐Value | ||
| Placement period | January 1–April 30 | Reference | <.001 | Reference | <.001 |
| May 1–August 31 | 2.02 (1.38, 2.95) | 1.51 (1.01, 2.26) | |||
| September 1–December 31 | 1.73 (1.26, 2.39) | 2.27 (1.56, 3.30) | |||
| Risk of BRD/UF | Low | Reference | Reference | ||
| High | 0.45 (0.32, 0.64) | <.001 | 0.62 (0.37, 1.02) | .06 | |
| Age | Calf | Reference | Reference | ||
| Yearling | 0.85 (0.61, 1.18) | .25 | 1.29 (0.80, 2.09) | .31 | |
| Sex | Female | Reference | Reference | ||
| Male | 0.98 (0.79, 1.20) | .83 | 1.39 (1.01, 1.93) | .04 | |
| Treated for BRD | No | Reference | Reference | ||
| Yes | 2.52 (2.05, 3.10) | <.001 | 3.14 (2.29, 4.30) | <.001 | |
BRD, bovine respiratory disease; CI, confidence intervals; OR, odds ratio; RHF, right heart failure; UF, undifferentiated fever.
aAll years; b2012 only.