Table 2 Multivariable analysis, Model 1 selection: only data collected at 42 days prior to calving date used to generate model
42 days prior to calving model | −2Loglikelihood | AIC | Likelihood ratio | P value |
|---|---|---|---|---|
Base model: parity+ BCS+ vaccination status | 28.89 | 36.89 | – | – |
Model 1a: parity + BCS + vaccination status + ΔCD14+ | 20.63 | 30.63 | 8.27 | 0.004 |
Model 1b: parity + BCS + vaccination status + ΔCD14 ++ CD14− | 11.80 | 23.80 | 8.83 | 0.003 |
Model 1c: parity + BCS + vaccination status + CD14+/CD14− ratio | 22.54 | 32.54 | 6.36 | 0.012 |