Figure 3.

Box and whiskers plot of the association between corrected urine specific gravity measured by urine dipstick (U_SG‐D) and urine osmolality (U_Osm, reference method) for 241 urine samples obtained periodically from 20 multiparous periparturient Holstein‐Friesian cows. The solid gray vertical line indicates the recommended cut point for U_Osm (≥800 mOsm/kg) for diagnosing hypohydration, and the solid gray horizontal line indicates the optimal cut point for corrected U_SG‐D (≥1.015) 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)