表1.
孕妇及新生儿的人口学信息
| Characteristic | n (%) | |
|---|---|---|
| Education | ||
| Less than high school | 337 (69.6) | |
| High school and above | 147 (30.4) | |
| Pre-pregnancy BMI/(kg/m2) | ||
| BMI <18.5 | 110 (22.7) | |
| 18.5≤BMI<24.0 | 307 (63.5) | |
| 24.0≤BMI<28.0 | 51 (10.5) | |
| BMI≥28.0 | 16 (3.3) | |
| Parity | ||
| 1 | 227 (46.9) | |
| ≥2 | 257 (53.1) | |
| Residence | ||
| Urban | 225 (46.5) | |
| Suburb | 259 (53.5) | |
| Household income/RMB | ||
| <3000 | 224 (46.1) | |
| 3000-4999 | 205 (42.5) | |
| ≥5000 | 55 (11.4) | |
| Newborn gender | ||
| Male | 236 (48.4) | |
| Female | 248 (51.6) | |
| Delivery mode | ||
| Spontaneous | 190 (39.5) | |
| Caesarean | 294 (60.5) | |
| Maternal age/years (Mean±SD)* | 26.2±4.2 | |
| Gestational age/d (Mean±SD)* | 274.7±8.2 | |
| Birth weight/g (Mean±SD)* | 3333.0±416.9 | |
n (%): number of pregnant women and the corresponding percentage; BMI: body mass index; *: n=484.