Figure 2.

Four-way decomposition of total excess relative risk for nasopharyngeal carcinoma associated with host SNPs

(A) rs2860580, (B) rs2894207, and (C) their joint status. CI, confidence interval; proportion, the proportion of total excess relative risk. Two host SNPs were combined as one categorical variable in the models by their joint status, which divided the study subjects into two groups: one group at higher risk carrying only risk alleles of both host SNPs and the other group at lower risk carrying protective alleles of either host SNP.