Skip to main content

Table 4 Final model describing explanatory variables and random effects of log transformed MilA ELISA antibody units (AU). The marginal R2 was 59% and conditional R2 was 65%

From: Mycoplasma bovis antibody dynamics in naturally exposed dairy calves according to two diagnostic tests

Variables Variance 95% confidence interval  
Random effect
 Animal 0.09 0.007–0.150  
 Residuals 0.57 0.463–0.655  
   Estimate SE P-value
Fixed effects
 Intercept   5.77 0.22 <  0.001
 Age days (linear)   12.91 3.53 <  0.001
 Age days (quadratic)   −8.25 2.18 <  0.001
 Herd 1   0  
 Herd 2   0.61 0.25 0.015
 Herd 3   −0.83 0.25 0.001
 Herd 4   0.32 0.26 0.231
 Age days (linear)*Herd 1   0  
 Age days (linear)*Herd 2   −11.90 3.89 0.003
 Age days (linear)*Herd 3   10.79 4.35 0.014
 Age days (linear)*Herd 4   −15.88 4.84 0.001
 Age days (quadratic)*Herd 1   0  
 Age days (quadratic)*Herd 2   4.13 2.64 0.118
 Age days (quadratic)*Herd 3   14.71 3.29 <  0.001
 Age days (quadratic)*Herd 4   −2.19 3.40 0.520