Table 2. Demographic characteristics of the participants (N = 316).
| Characteristics | n | Percentage (%) |
|---|---|---|
| Age (years) | ||
| Mean±SD | 30.5±4.1 | |
| 20–34 | 264 | 83.5 |
| 35–45 | 52 | 16.5 |
| Education level | ||
| High school or below | 120 | 39.1 |
| Bachelor degree or above | 187 | 60.9 |
| Household monthly income per capita (CNY) | ||
| ≤ 3000 | 83 | 28.6 |
| 3001–6000 | 118 | 40.7 |
| > 6000 | 89 | 30.7 |
| Number of childbirth | ||
| 1 | 208 | 65.8 |
| ≥2 | 108 | 34.2 |
| Delivery mode | ||
| Vaginal | 180 | 58.3 |
| Cesarean | 129 | 41.7 |
| Feeding pattern at 0–3 months | ||
| Exclusive breastfeeding | 70 | 22.2 |
| Predominant breastfeeding | 111 | 35.1 |
| Mixed feeding | 135 | 42.7 |
| Pre-pregnancy BMI (kg/m2) | ||
| Mean±SD | 21.2±3.1 | |
| Underweight (< 18.5) | 54 | 17.1 |
| Normal (18.5–23.9) | 216 | 68.4 |
| Overweight (24.0–27.9) | 34 | 10.8 |
| Obese (≥28.0) | 12 | 3.8 |
| Gestational weight gain (kg, Mean±SD) | 14.6±5.1 | |
| Postpartum weight retention | ||
| 0–3 months | ||
| Mean±SD | 6.0±5.1 | |
| <5kg | 117 | 37.0 |
| ≥5kg | 199 | 63.0 |
| 6–8 months | ||
| Mean±SD | 5.2±7.7 | |
| <5kg | 149 | 47.2 |
| ≥5kg | 167 | 52.8 |
BMI: Body mass index
CNY: China Yuan, 1CNY = 0.14 USD
SD: standard deviation