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Protective effect of folate on fetal heart development
| Group | Number of fetal hearts | VSD | ASD | Amount abnormality rate(%) |
|---|---|---|---|---|
| A | 40 | 0 | 0 | 0 (0%) |
| B | 44 | 6 | 4 | 10 (22.7%)(*) |
| C | 40 | 6 | 2 | 8 (20.0%)(*) |
| D | 44 | 3 | 1 | 4 (9.1%)(*) |
| E | 44 | 2 | 2 | 4 (9.1%)(*) |
Annotation: (*) Compared with group A, P<0.05
