Polymorphic variants Control group(n=45)  Diabetic group(n=45) Odds ratio 95% CI p value chi sq
R+/R+ 28(62.2%) 33(73.3%) 1.0   0.259 0.982
R+/R- 13 (28.9%) 9 (20.0%) 0.913 0.328-2.55 0.527
R-/R- 4 (8.9%) 3 (6.7%) 0.913 0.185-4.50 1.00
R+ Allele 69 75 0.776 0.371 -1.625   0.502
R- Allele 21 15 1    
Table 3: Polymorphic variants and allele frequency in study groups.