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The mean age at dialysis initiation for subjects by APOL1 risk allele status. Because of the proximity of the alleles it is not expected for a diploid sample to have more then two risk alleles, therefore only six groups existed within this dataset: Wt + Wt, Wt + G1, G1 + G1, Wt + G2, G2 + G2, and G1 + G2. Bar height is the mean age. Error bars denote the standard error. *Significantly different from Wt (Wt + Wt).
