Table 1.
Basic information of pregnant women in different regions
| Variables | Total | Eastern | Central | Western | χ2 | P |
|---|---|---|---|---|---|---|
| N(%,95CI) | N(%,95CI) | N(%,95CI) | N(%,95CI) | |||
| Age (years old) | 973.862 | 0.000 | ||||
| < 25 | 8700 (17.7, 17.4–18.1) | 4064 (14.7,14.3–15.1) | 2256 (16.9,16.3–17.5) | 2380 (29.7,28.7–30.7) | ||
| 25–35 | 35,899 (73.1,72.8–73.5) | 21,062 (76.0,75.5–76.5) | 9790 (73.4,72.6–74.1) | 5047 (62.9,61.8–64.0) | ||
| >35 | 4485 (9.1,8.9–9.4) | 2588 (9.3,9.0–9.7) | 1299 (9.7,9.2–10.2) | 598 (7.5,6.9–8.0) | ||
| Type of residents | 354.959 | 0.000 | ||||
| local | 46,178 (94.1,93.9–94.3) | 26,398 (95.3,95.0–95.5) | 12,117 (90.8,90.3–91.3) | 7663 (95.5,95.0–95.9) | ||
| Non-local | 2906 (5.9,5.7–6.1) | 1316 (4.8,4.5–5.0) | 1228 (9.2,8.7–9.7) | 362 (4.5,4.1–5.0) | ||
| Education | 8892.494 | 0.000 | ||||
| Junior high or lower | 14,463 (29.5,29.1–29.9) | 7246 (26.2,25.6–26.7) | 3534 (26.5,25.7–27.2) | 3683 (45.9,44.8–47.0) | ||
| Senior high | 15,485 (31.6,31.1–32.0) | 5546 (20.0,19.5–20.5) | 7457 (55.9,55.0–56.7) | 2482 (30.9,29.9–31.9) | ||
| University or above | 18,919 (38.5,38.1–39.0) | 14,908 (53.8,53.2–54.4) | 2158 (16.2,15.6–16.8) | 1853 (23.1,22.2–24.0) | ||
| Unknown | 217 (0.44,0.38–0.50) | 14 (0.05,0.02–0.08) | 196 (1.5,1.3–1.7) | 7 (0.09.0.02–0.15) | ||
| Gravidity | 300.133 | 0.000 | ||||
| 0 | 6030 (12.3,12.0–12.6) | 3628 (13.1,12.7–13.5) | 1124 (8.4,7.9–8.9) | 1278 (15.9,15.1–16.7) | ||
| ≥ 1 | 43,054 (87.7,87.4–88.0) | 24,086 (86.9,86.5–87.3) | 12,221 (91.6,91.1–92.1) | 6747 (84.1,83.3–84.9) | ||
| Parity | 3910.217 | 0.000 | ||||
| 0 | 25,655 (52.3,51.9–52.1) | 12,241 (44.2,43.6–44.8) | 10,049 (75.3,74.6–76.0) | 3365 (41.9,40.9–43.0) | ||
| ≥ 1 | 23,429 (47.7,47.3–48.2) | 15,473 (55.8,55.3–56.4) | 3296 (24.7,24.0–25.4) | 4660 (58.1,57.0–59.2) | ||
| Pregnancy-labor history | 5288.252 | 0.000 | ||||
| Normal pregnancy | 11,301 (23.0,22.7–23.4) | 6451 (23.3,22.8–23.8) | 2367 (17.7,17.1–18.4) | 2483 (30.9,29.9–32.0) | ||
| Abnormal pregnancy | 16,341 (33.3,32.9–33.7) | 10,225 (36.9,36.3–37.5) | 2081 (15.6,15.0–16.2) | 4035 (50.3,49.2–51.4) | ||
| Missing | 21,442 (43.7,43.3–44.1) | 11,038 (39.8,39.3–40.4) | 8897 (66.7,65.9–67.5) | 1507 (18.8,17.9–19.6) | ||
| Mode of delivery | 806.943 | 0.000 | ||||
| Vaginal delivery | 26,596 (54.2,53.7–54.6) | 15,287 (55.2,54.6–55.8) | 6254 (46.9,46.0–47.7) | 5055 (63.0,61.9–64.1) | ||
| caesarean | 22,414 (45.7,45.2–46.1) | 12,420 (44.8,44.2–45.4) | 7088 (53.1,52.3–54.0) | 2906 (36.2,35.2–37.3) | ||
| Missing | 74 (0.15,0.12–0.19) | 7 (0.03,0.01–0.04) | 3 (0.02,0.002–0.05) | 64 (0.80,0.60–0.99) |