A66G AA vs. GGOR(95% CI ) P value AG vs. AAOR(95% CI ) P value GG vs. AA+AGOR(95% CI ) P value AG+GG vs. AAOR(95% CI ) P value
Total 0.5801(0.6271,0.7640) <0.0001 0.7862(0.6967,0.995) 0.0493 0.6947(0.8680,0.8548) 0.0006 0.7169(0.6323,0.9031) 0.0046
Caucasian 0.6852(0.778,0.9655) 0.0073 0.328(0.987,1.87) 0.1067 0.6367(0.7979,0.8281) 0.0007 1.533(1.021,2.129) 0.0104
Brazilian 0.4914(0.6022.0.7868) 0.0029 0.7851(0.6488,1.124) 0.1863 0.5849(0.8507,0.8667) 0.0071 1.417(0.999,2.006) 0.0487
Asian 0.40(0.0649,6.853) 0.5183 0.7851(0.6488,1.124) 0.1863 0.1667(0.762,0.7965) 0.0127 0.4754(0,9283,5.388) 0.539
Table 5: ORs and 95% CI for Down syndrome and the MTRR A66G polymorphism under different genetic models.