Figure 2.
25(OH)D clearance by kidney-disease group and race. The center horizontal line in each box indicates the median; top and bottom box borders indicate the first and third quartiles, respectively. The vertical whiskers depict the most extreme observation within 1.5 times the interquartile range of the nearest quartile; dots show all points lying beyond 1.5 times the interquartile range of the nearest quartile.