Mean correlation R² between true and imputed genotypes for SHAPEIT+minimac, duoHMM+minimac, SHAPEIT+IMPUTE, duoHMM+IMPUTE, Eagle+minimac, and Eagle+IMPUTE, using the random selection strategy: (A) EUR; (B) AFR. The first/second of a pair of programs indicates phasing/imputation functions. Computation of the mean of R² is based on all 100 genetic data sets with a sample size of 960 subjects, each having 7954 SNPs for EUR and 10,891 SNPs for AFR.