Table 1.
The socio-demographic information of the participants in this study (N = 629).
| Sociodemographic | Level | N | % |
|---|---|---|---|
| Age (years) | <20 | 58 | 9.2 |
| 20–30 | 386 | 61.4 | |
| >30 | 185 | 29.4 | |
| Gestational week | 12–21 | 172 | 27.3 |
| 22–28 | 146 | 23.2 | |
| 29–36 | 225 | 35.8 | |
| 37–42 | 86 | 13.7 | |
| Immigration status | Migrant | 335 | 53.3 |
| Resident | 294 | 46.7 | |
| Education level | Junior high school or less | 54 | 8.6 |
| Senior high school or technical school | 195 | 31.0 | |
| College or above | 380 | 60.4 | |
| Monthly household income per capita | <800 CNY | 128 | 20.3 |
| 800–1500 CNY | 332 | 52.8 | |
| >1500 CNY | 169 | 26.9 | |
| Occupation | No job | 54 | 8.6 |
| Farmer/worker/businessman | 424 | 67.4 | |
| Civil servants | 121 | 19.2 | |
| Medical staff | 30 | 4.8 | |
| Number of children * | 0 | 377 | 59.9 |
| 1 | 184 | 29.3 | |
| ≥2 | 68 | 10.8 |
* Excluding the child of the current pregnancy.