Table 2. The relative contributions of decreasing trend of neural tube defects prevalence.
| Birth Defects | Decreasing trend | |
|---|---|---|
| β | Contribution rate (%) | |
| NTDs | ||
| Anencephaly | −0.11 | 28.2 |
| Spina bifida | −0.12 | 30.8 |
| Encephalocele | −0.03 | 7.7 |
| Congenital hydrocephalus | −0.13 | 33.3 |
| NTDs | ||
| Isolated | −0.13 | 81.3 |
| Non-isolated | −0.03 | 18.7 |
| Anencephaly | ||
| Isolated | −0.11 | 52.4 |
| Non-isolated | −0.10 | 47.6 |
| Spina bifida | ||
| Isolated | −0.14 | 58.3 |
| Non-isolated | −0.10 | 41.7 |
| Encephalocele | ||
| Isolated | −0.01 | 12.5 |
| Non-isolated | −0.07 | 87.5 |
| Congenital hydrocephalus | ||
| Isolated | −0.14 | 60.9 |
| Non-isolated | −0.09 | 39.1 |