Sociodemographic variables during pregnancy and in early childhood
| Sociodemographic variables during pregnancy/early childhood | Mean (SD) |
| Child birth weight in grams | 3573.4 (452.7) |
| Gestational age at birth in weeks | 40.0 (1.3) |
| Children’s age in days | |
| 3 months | 98.1 (14.7) |
| 8 months | 246.6 (9.6) |
| 18 months | 561.7 (47.7) |
| 24 months | 752.1 (42.6) |
| Maternal age during pregnancy in years | 31.1 (4.4) |
| N (%) | |
| Sex | |
| Male | 495 (52.9%) |
| Female | 441 (47.1%) |
| Maternal health during pregnancy | |
| Good health | 718 (76.9%) |
| Maternal education during pregnancy | |
| Primary | 40 (4.4%) |
| Secondary | 518 (56.6%) |
| High | 357 (39.0%) |
| Infantile colic in early childhood | |
| 3 months | 36 (4.0%) |
| 8 months | 21 (2.3%) |