Figure 1

(a) Meta-analysis of the overall association between the A46G polymorphism and hypertension comparing A vs. G. n indicates the total number of A alleles; N indicates the total number of A alleles plus G alleles. (b) Meta-analysis for the association between the A46G polymorphism and hypertension comparing AA vs. AG+GG in the subgroup of mixed Africans. n indicates the total number of the AA genotype; N indicates the total number of the AA genotype plus the AG+GG genotype.