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Table 5 Logistic regression results of relationship between BoHV-1 stock bull status as dependent variable and number of movements between farms of the individual bulls as independent variable

From: Prevalence of BoHV-1 seropositive and BVD virus positive bulls on Irish dairy farms and associations between bull purchase and herd status

Dependent variable Independent variable Odds ratio Confidence interval (95 %) P value
IBR classification 1 movement vs. 0 movement 1.18 0.64 2.18 0.59
POSITIVE vs. NEGATIVE 2 movements vs. 0 movement 3.27 1.74 6.16 0
  3 movements vs. 0 movement 2.88 1.03 8.05 0.04
  4 movements or more vs. 0 movement 6.24 2.32 16.75 0