Table 1 Characteristics of the pregnant women (n = 157) and their neonates (n = 157). SD, standard deviation; n, number; BMI, body mass index; CNY, Chinese Yuan.
Characteristic | Mean ± SD orn (%) |
|---|---|
Maternal age at enrollment (years) | 29.8 ± 2.9 |
Maternal weight (kg) | 55.5 ± 6.9 |
Maternal height (cm) | 162.1 ± 4.4 |
Maternal prepregnancy BMI (kg/m2) | 21.1 ± 2.4 |
Maternal previous live births | |
0 (primiparous) | 143 (91.1) |
≥1 (multiparous) | 14 (8.9) |
Maternal monthly income (CNY, ¥) | |
< 4000 | 43 (27.4) |
≥4000 to <8000 | 87 (55.4) |
≥8000 | 27 (17.2) |
Neonatal sex | |
Female | 70 (44.6) |
Male | 87 (55.4) |
Neonatal type of delivery | |
Normal vaginal | 74 (47.1) |
Cesarean section | 83 (52.9) |
Neonatal gestational weeks at birth | 39.8 ± 1.5 |
Neonatal birth weight (g) | 3447.0 ± 420.4 |
Neonatal birth length (cm) | 50.5 ± 1.1 |
