Variables | Anemia during pregnancy | Anemia across the entire pregnancy | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Anemia (n) | Non-anemia (n) | Prevalence (%) | \({\chi }^{2}\) | P | Anemia (n) | Non-anemia (n) | Prevalence (%) | \({\chi }^{2}\) | P | |
Region | ||||||||||
Eastern | 26527 | 32721 | 44.77 | 447.255 | < 0.001 | 1955 | 57293 | 3.3 | 360.238 | < 0.001 |
Central | 8497 | 14164 | 37.5 | 1387 | 21274 | 6.12 | ||||
Western | 12207 | 14235 | 46.17 | 933 | 25509 | 3.53 | ||||
Area | ||||||||||
South | 36959 | 51232 | 41.91 | 545.889 | < 0.001 | 3899 | 84292 | 4.42 | 282.869 | < 0.001 |
North | 10272 | 9888 | 50.95 | 376 | 19784 | 1.87 | ||||
Residence | ||||||||||
Urban | 19372 | 27282 | 41.52 | 142.505 | < 0.001 | 1646 | 45008 | 3.53 | 37.667 | < 0.001 |
Rural | 27859 | 33838 | 45.15 | 2629 | 59068 | 4.26 | ||||
Age(years old) | ||||||||||
< 18 | 384 | 317 | 54.78 | 36.596 | < 0.001 | 14 | 300 | 4.46 | 16.709 | < 0.001 |
18 ~ 34 | 42116 | 54755 | 43.48 | 3758 | 93500 | 3.86 | ||||
≥ 35 | 4731 | 6048 | 43.89 | 503 | 10276 | 4.67 | ||||
Ethnicity | ||||||||||
Han | 44723 | 58708 | 43.24 | 114.311 | < 0.001 | 4120 | 99311 | 3.98 | 8.598 | 0.003 |
Ethnic minorities | 2508 | 2412 | 50.98 | 155 | 4765 | 3.15 | ||||
Education | ||||||||||
Primary school and lower | 1766 | 1774 | 49.89 | 229.284 | < 0.001 | 147 | 3393 | 4.15 | 161.295 | < 0.001 |
Junior high school | 14176 | 17141 | 45.27 | 1462 | 29855 | 4.67 | ||||
Senior high school/technical school | 14274 | 17646 | 44.72 | 1417 | 30503 | 4.44 | ||||
College and above | 17015 | 24559 | 40.93 | 1249 | 40325 | 3.00 | ||||
Type of residents | ||||||||||
Local | 45094 | 58667 | 43.46 | 17.159 | < 0.001 | 4080 | 99681 | 3.93 | 1.16 | 0.282 |
Non-local | 2137 | 2453 | 46.56 | 195 | 4395 | 4.25 | ||||
Gravidity | ||||||||||
1 | 14710 | 21276 | 40.88 | 284.179 | < 0.001 | 1277 | 34709 | 3.55 | 45.829 | < 0.001 |
2 | 18954 | 24830 | 43.29 | 1690 | 42094 | 3.86 | ||||
≥ 3 | 13567 | 15014 | 47.47 | 1308 | 27273 | 4.58 | ||||
Parity | ||||||||||
0 | 20586 | 28234 | 42.17 | 73.234 | < 0.001 | 1845 | 46975 | 3.78 | 6.486 | 0.011 |
≥ 1 | 26645 | 32886 | 44.76 | 2430 | 57101 | 4.08 | ||||
Number of fetuses | ||||||||||
Singleton | 46752 | 60730 | 43.5 | 47.362 | < 0.001 | 4228 | 103254 | 3.93 | 4.948 | 0.026 |
Multiple | 479 | 390 | 55.12 | 47 | 822 | 5.41 |