From: Direct and indirect effects of Johne's disease on farm and animal productivity in an Irish dairy herd
Case-control comparison
Overall model fit (R2 value)
Milk yield difference (kg)a
P-value
Clinical comparisonb
0.526
-1259.29
0.001
Pre-clinical comparisonb
0.542
21.18
0.704
Test positive comparisonb
0.315
84.49
0.157