Demographic characteristics of total live births, total fetal deaths, total infant deaths, and fetal/infant deaths related to birth defects
| Parameters | Total live births | Total fetal deaths | Total infant deaths | Infant deaths by birth defects | Fetal deaths by birth defects |
| n=3,181,145 | n=43 385 | n=9563 | n=2176 | n=4343 | |
| Maternal age (years) | 31.9±26.7 | 30.7±6.2 | 31.6±5.0 | 31.7±4.9 | 21.2±4.4 |
| Gestational age (weeks) | 38.6±2.3 | 20.1±5.8 | 32.2±6.6 | 35.9±4.4 | 31.8±5.6 |
| Birth weight (kg) | 3.21±0.48 | 0.69±0.78 | 1.96±1.15 | 2.47±0.87 | 0.51±0.5 |
| Multiple birth, n (%) | 1 01 797 (3.2) | 3818 (8.8) | 1492 (15.6) | 196 (9) | 200 (4.6) |
Data are presented as mean±SD deviation or no. (%) unless otherwise specified.