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) |
Comparison of baseline characteristics of the women delivered after March 2007 enrolled in survey trial by counties, Shaanxi Province, China 2010–04. Frequency and percentage in bracket are reported.
Values are number (%) of women (singleton babies only) unless otherwise mentioned.
*Reported as mean and SD (standard deviation).