The measures of SNP-wise imputation accuracy by MAF. SNP-wise imputation accuracy computed as a) the proportion of correctly imputed alleles (IAi.), b) the correlation between imputed and observed allelic dosage (R2), and c) the proportion of correctly imputed alleles adjusted for MAF (), as a function of MAF of the SNP. The red line is the weighted mean average estimated using a loess smoother.
Badke et al. BMC Genetics 2013 14:8 doi:10.1186/1471-2156-14-8