| Covariates | Diabetic Retinopathy | |
| p | OR (95%CI) | |
| Gender | 0.451 | 0.804 (0.456 - 1.418) |
| Age | 0.818 | 0.995 (0.956 - 1.036) |
| Duration of diabetes (years) | 0.845 | 1.009 (0.920 - 1.107) |
| BMI (Kg/m2) | 0.431 | 1.029 (0.958 - 1.105) |
| Glucose (mg/dl) | 0.887 | 1.000 (0.996 - 1.005) |
| HbA1C (%) | <0.001* | 1.580 (1.334 - 1.872) |
| Total cholesterol (mg/dl) | 0.090 | 0.992 (0.983 - 1.001) |
| Pro12Ala | 0.143 | 0.542 (0.238 - 1.231) |
| C161T | <0.001* | 3.479 (1.907 - 6.346) |