Table 1 Baseline characteristics of pregnant women by county
County | Total sample | |||||
|---|---|---|---|---|---|---|
Xun Yi | Bing | Lin You | Qian Yang | Zhou Zhi | ||
Number of pregnant women | 949 | 919 | 956 | 937 | 945 | 4706 |
Maternal age mean(SD)* | 28.2(5.2) | 28.1(5.5) | 28.0(4.6) | 27.5(5.0) | 27.7(4.9) | 27.9(5.1) |
<20 | 9(0.9) | 15(1.6) | 9(1.0) | 13(1.4) | 12(1.3) | 58(1.3) |
20-35 | 832(87.8) | 799(87.1) | 882(92.9) | 809(89.7) | 857(91.1) | 4179(89.7) |
>35 | 107(11.3) | 104(11.3) | 95(6.1) | 80(8.9) | 72(7.6) | 421(9.0) |
Women’s education | ||||||
None | 5(0.6) | 10(1.2) | 30(3.4) | 5(0.6) | 3(0.3) | 53(1.2) |
Primary school | 193(21.8) | 249(30.6) | 382(43.8) | 197(22.0) | 121(13.1) | 1142(26.0) |
Junior high school or higher | 688(77.6) | 555(68.2) | 461(52.8) | 694(77.4) | 801(86.6) | 3199(72.8) |
First pregnancy | ||||||
Yes | 545(57.4) | 405(44.1) | 491(51.4) | 568(60.7) | 541(57.3) | 2548(54.1) |
Household Wealth Index | ||||||
Poorest | 301(31.7) | 363(39.5) | 635(66.4) | 162(17.3) | 115(12.2) | 1576(33.5) |
Middle income | 381(40.2) | 298(32.4) | 247(25.9) | 333(35.5) | 305(32.3) | 1564(33.2) |
Richest | 267(28.1) | 258(28.1) | 74(7.7) | 442(47.2) | 525(55.5) | 1566(33.3) |