Association between level of African Ancestry and genotypes of rs2298849, rs2282679, and rs10877012 among African Americans.

aGenotype associated with the lowest 25(OH)D levels in our data.
bp-value from Pearson's chi square test comparing proportions across the three ancestry groups.
cGenotypes combined because less than five subjects had the homozygous variant genotype.

a. 本研究数据中与最低25-羟维生素D（25(OH)D）水平相关的基因型。
b. 用于比较三个祖先群体间比例差异的皮尔逊卡方检验（Pearson's chi square test）所得p值。
c. 因携带纯合变异基因型的受试者人数少于5例，故对相关基因型进行合并处理。