17 January 2022 : Clinical Research
Epidemiology of Birth Defects in Eastern China and the Associated Risk Factors
Qiao-Qiao Wang1BEG*, Cha-Ying He2AC, Jin Mei3ADF, Yi-Lin Xu4BCDOI: 10.12659/MSM.933782
Med Sci Monit 2022; 28:e933782
Table 3 Birth defect types and proportions.
| Birth defect type | n | Ratio (%) |
|---|---|---|
| Down syndrome | 1337 | 30.7 |
| Cleft lip | 188 | 4.3 |
| Polydactyly | 155 | 3.6 |
| Hypospadias | 142 | 3.3 |
| Encephalocele | 128 | 2.9 |
| Cleft palate | 112 | 2.6 |
| Small ears (or no ears) | 110 | 2.5 |
| Syndactyly | 110 | 2.5 |
| Conjoined twins | 95 | 2.2 |
| Congenital diaphragmatic hernia | 74 | 1.7 |
| Congenital hydrocephalus | 73 | 1.7 |
| Esophageal atresia | 62 | 1.4 |
| Anencephaly | 49 | 1.1 |
| Short limbs | 47 | 1.1 |
| Umbilical bulge | 44 | 1 |
| Bladder exstrophy | 41 | 0.9 |
| Cleft spine | 23 | 0.5 |
| Other deformities of the outer ear | 11 | 0.3 |
| Gastroschisis | 7 | 0.2 |
| Other birth defects | 1609 | 37.0 |