Figure 1.

Boxplots displaying the 25(OH)D (a), parathyroid hormone (b), ionized calcium (c), and phosphorus (d) concentrations of dogs in the control (n = 35) and clinical (n = 22) groups. PTH and iCa were available in 19 of 35 controls and 21 of 22 affected dogs. *Significant difference between the control and the clinical groups, as defined by P < .05. The box represents the interquartile range (ie, from 1st to 3rd quartile), the line represents the median, the whiskers represent the highest and lowest value within 1.5× the interquartile range, and the circles indicate outliers