Table 1.
Demographic characteristics of Chinese pregnant women in eight cities (n = 479)
| Characteristics | Results (n) | Percentage (%) |
|---|---|---|
| Age at interview (years) | ||
| <25 | 122 | 25.5 |
| 25–29 | 242 | 50.5 |
| ≥30 | 112 | 23.4 |
| Trimester | ||
| First | 158 | 33.0 |
| Second | 160 | 33.4 |
| Third | 161 | 33.6 |
| Education | ||
| Junior high school or lower | 60 | 12.5 |
| Senior high school and college | 378 | 78.9 |
| Graduate or higher | 34 | 7.1 |
| Household income per capita per month (RMB, Yuan) | ||
| ≤1500 | 55 | 11.5 |
| 1501–3999 | 245 | 51.2 |
| ≥4000 | 175 | 36.5 |
| Prepregnancy BMI (kg/m2) | ||
| <18.5 | 105 | 21.9 |
| 18.5–23.9 | 314 | 65.6 |
| ≥24.0 | 60 | 12.5 |
BMI: Body mass index.