Two adjustment strategies for imputation across genotyping arrays.

Abstract excerpt

Genotype imputation is a powerful approach in genome-wide association studies (GWAS) because it can provide higher resolution for associated regions and facilitate meta-analysis. However, bias can exist if different genotyping arrays are used and are unbalanced for case versus control subjects. The intersection imputation strategy [imputation based on single nucleotide polymorphisms (SNPs) available on all...

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