Table 1.
Sample Characteristics (N = 5372)
| Characteristics | n(%) |
|---|---|
| Age group | |
| 20–24 | 1554(28.9) |
| 25–29 | 2608(48.6) |
| 30–34 | 1210(22.5) |
| Educational level | |
| Elementary | 395(7.4) |
| Middle school | 3025(56.3) |
| High school | 1228(22.9) |
| College | 724(13.5) |
| Area of origin | |
| East | 1311(24.4) |
| Central | 2171(40.4) |
| West | 1890(35.2) |
| Monthly household income per capita(CNY)a | |
| < 1000 | 995(18.5) |
| 1000–2000 | 2697(50.2) |
| 2000–3000 | 923(17.2) |
| ≥ 3000 | 757(14.1) |
| Medical insurance | |
| Rural insurance | 3908(72.7) |
| Childbearing insurance | 487(9.1) |
| Both | 131(2.4) |
| None | 846(15.7) |
| Birth order of this child | |
| 1st | 3358(62.5) |
| 2nd | 1874(34.9) |
| 3rd | 140(2.6) |
| Migrated before this pregnancy | |
| Yes | 4233(78.8) |
| No | 1139(21.2) |
| Geographic spread of migration | |
| Between provinces | 2565(47.7) |
| Between municipal jurisdictions within province | 1728(32.2) |
| Within municipal jurisdiction (rural to urban) | 1079(20.1) |
| Stayed at home town during pregnancy | |
| Yes | 1274(23.7) |
| No | 4098(76.3) |
| Time since first migration (years) | |
| mean ± SD | 5 ± 4 |
a1 US dollar is approximately 6.5 CNY