Figure 4.

Scatterplot of the linear relationship between urine electrical conductivity (U_EC) and osmolality (U_Osm) for 237 urine sample obtained periodically from 20 multiparous periparturient Holstein‐Friesian cows. Some data points are superimposed. The solid line is the line of regression. The solid gray vertical line indicates the recommended cut point for U_Osm (≥800 mOsm/kg), and the solid gray horizontal line indicates the optimal cut point for U_EC (≥23.7 mS/cm) identified by logistic regression for diagnosing hypohydration. The box and whiskers plot represents the median (middle line), interquartile range (ends of the shaded rectangle), 10% to 90% confidence interval (whiskers), and values outside this confidence interval (small gray circles)