Figure 3
From: Impact of pre- and post-variant filtration strategies on imputation

Correlations between the variant MAF in NCBI dbSNP137 and the MAF after imputation without pre-filtration: 163 variants (imputed-only) were recorded in NCBI with null allele frequencies (18 imputed with MAF = 0 and information score < 0.3; 145 mostly structural variants uncorrelated with their imputed MAF).