Diplotypes and their frequencies for each of nine genotypes at two SNPs within a QTN, haplotype composition frequencies for each genotype, and composite diplotypes for four possible risk haplotypes.

Two alleles for each of the two SNPs are denoted as 1 and 0, respectively. Genotypes at different SNPs are separated by a slash. Diplotypes are the combination of two bracketed maternally and paternally derived haplotypes. By assuming different haplotypes as a risk haplotype, composite diplotypes are accordingly defined and their genotypic values are given.