Fig. 3

Boxplots of Corrected Calcium and Phosphate for the 12 Months Before and After Parathyroidectomy. Note: The median is shown as a horizontal line within each box. The edges of each box represent the 25% and 75% percentile (interquartile range). Vertical lines (“whiskers”) represent 1.5 times the interquartile range. Values outside of this range are shown as dots whose intensity is proportional to the number of dots to minimize overplotting