| Positive MTHFR gene mutation (n = 19) | Group I Abnormal Doppler “n = 35” | Group II Normal Doppler “n = 22” | X2 P value | ||
| No | % | No | % | ||
| Heterozygous Positive Negative |
12 23 |
34.3 65.7 |
1 21 |
4.5 95.5 |
6.78 0.009* |
| Homozygous Positive Negative |
7 28 |
20.0 80.0 |
0 22 |
0.0 100.0 |
FET 0.036* |