| No | 5 (16.7%) | 1 (3.3%) |
|
|
| Birth weight | ||||
| 1500 - 2499 gram | 1 (3.4%) | 3 (10.0%) | 2.932 | 0.402 |
| 2500 - 4499 gram | 27 (93.1%) | 24 (80.0%) | ||
| 4500 over gram | 1 (3.4%) | 2 (6.7%) | ||
| Unknown | 0 (0.0%) | 1 (3.3%) | ||
| Alcohol usage during the pregnancy period | ||||
| Seldom | 3 (10.0%) | 0 (0.0%) | 4.23 | 0.115 |
| Always | 1 (3.3%) | 1 (3.3%) | ||
| Never | 26 (86.7%) | 29 (96.7%) | ||
| Exposed during pregnancy to the secondhand smoke | ||||
| Seldom | 19 (63.3%) | 7 (23.3%) | 10.57 | 0.014 |
| Always | 2 (6.7%) | 3 (10.0%) | ||
| Never | 8 (26.7%) | 19 (63.3%) | ||
| Unknown | 1 (3.3%) | 1 (3.3%) | ||
| Pregnant preeclampsia | ||||
| Yes | 15 (53.6%) | 6 (22.2%) | 5.723 | 0.017 |
| No | 13 (46.4%) | 21 (77.8%) | ||
| Pregnancy complications | ||||
| Yes | 9 (32.1%) | 1 (3.7%) | 5.684 | 0.017 |
| No | 19 (67.9%) | 26 (96.3%) | ||