Linear regression-derived associations between rs2298849, rs2282679, and rs10877012 and serum levels of 25(OH)D among African Americans.

aInterpreted as the average change in serum 25(OH)D level (ng/mL) associated with the genotype comparison shown in the table.
bThree separate linear regression models including each SNP alone, adjusted for sex and percentage African ancestry.
cGenotypes combined because less than five subjects had the homozygous variant genotype.
dOne linear regression model including the three SNPs together, adjusted for sex and percentage African ancestry.