Table 1 Demographic information of pregnant women in monitoring areas, from 2016 to 2020 (N = 108,351)
Variable | Number of subjects(n) | Composition ratio (%) | Variable | Number of subjects (n) | Composition ratio (%) |
|---|---|---|---|---|---|
Region | Education level | ||||
Eastern | 59248 | 54.68% | Primary school or lower | 3540 | 3.27% |
Central | 22661 | 20.91% | Junior high school | 31317 | 28.90% |
Western | 26442 | 24.40% | Senior high school/technical school | 31920 | 29.46% |
Area | College or above | 41574 | 38.37% | ||
South | 88191 | 81.39% | Gravidity | ||
North | 20160 | 18.61% | 1 | 35986 | 33.21% |
Residence | 2 | 43784 | 40.41% | ||
Urban | 46654 | 43.06% | ≥ 3 | 28581 | 26.38% |
Rural | 61697 | 56.94% | Parity | ||
Age (years old) | 0 | 48820 | 45.06% | ||
< 18 | 701 | 0.65% | ≥ 1 | 59531 | 54.94% |
18 ~ 34 | 96871 | 89.40% | Number of fetuses | ||
≥ 35 | 10779 | 9.95% | Singleton | 107482 | 99.20% |
Ethnicity | Multiple | 869 | 0.80% | ||
Han | 103431 | 95.46% | |||
Ethnic minorities | 4920 | 4.54% | |||
Type of residents | |||||
Local | 103761 | 95.76% | |||
Non- local | 4590 | 4.24% | |||