Molecular Vision: Paine, Mol Vis 2012; 18:2749-2757. Table 7

Table 7. Frequency distribution of “Combination” genotype.

Category using combination genotype (combination)	PDR n=253(%)	DC n=240(%)
1 (all the three SNPs are dominant)	5(1.98)	1(0.42)
2 (two SNPs has dominant genotypes)	135(53.36)	66(27.5)
3 (one of the SNP has dominant genotype)	83(32.81)	117(48.75)
4 (none of the SNP has dominant genotype)	30(11.85)	56(23.33)

Combined genotype analysis with cases and controls were done by assuming dominant model of inheritance. Categorical variable were done with four categories according to the number of dominant genotypes present in the combination genotype (3 if all the three SNP have dominant genotype; 2 if two SNPs have dominant genotypes; 1 if only one of the SNPs has dominant genotype; 0 if none of the SNPs has dominant genotype).