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. Author manuscript; available in PMC: 2014 May 22.
Published in final edited form as: N Engl J Med. 2013 Nov 21;369(21):1991–2000. doi: 10.1056/NEJMoa1306357

Figure 3. Total and Bioavailable 25-Hydroxyvitamin D Levels among Homozygous Blacks and Whites with Similar Parathyroid Hormone Levels.

Figure 3

Within quintiles of parathyroid hormone values, blacks generally had lower levels of total 25-hydroxyvitamin D levels than whites (Panel A) but similar levels of bioavailable 25-hydroxyvitamin D (Panel B). I bars indicate standard errors. One asterisk denotes P<0.01 for the comparisons between blacks and whites within the quintile, two asterisks P<0.01 for the comparison with the highest quintile among whites, and three asterisks P<0.01 for the comparison with the highest quintile among blacks.