Table 1 Comparison of baseline information and pregnancy outcomes in different groups of pregnant women
Variables | Total (n = 13294) | Non-preeclampsia (n = 12735) | Preeclampsia(n = 559) | Statistic | P |
|---|---|---|---|---|---|
Year, No. (%) | χ²=9.34 | 0.053 | |||
2020 | 984 (7.40) | 951 (7.47) | 33 (5.90) | ||
2021 | 2559 (19.25) | 2455 (19.28) | 104 (18.60) | ||
2022 | 4519 (33.99) | 4341 (34.09) | 178 (31.84) | ||
2023 | 3588 (26.99) | 3434 (26.97) | 154 (27.55) | ||
2024 | 1644 (12.37) | 1554 (12.20) | 90 (16.10) | ||
Height, Mean ± SD | 163.04 ± 5.36 | 163.04 ± 5.33 | 163.13 ± 5.93 | t=-0.36 | 0.718 |
Age, M (P25, P75) | 30.00 (28.00, 33.00) | 30.00 (28.00, 32.00) | 30.00 (27.00, 33.00) | Z=-1.51 | 0.130 |
Prepregnancy weight, M (P25, P75) | 57.00 (52.00, 63.50) | 57.00 (52.00, 63.00) | 64.00 (57.00, 74.00) | Z=-15.00 | < 0.001 |
GWG, M (P25, P75) | 15.80 (12.50, 19.00) | 15.60 (12.50, 19.00) | 16.70 (13.00, 21.00) | Z=-4.36 | < 0.001 |
Prepregnancy BMI, M (P25, P75) | 21.48 (19.61, 23.83) | 21.40 (19.57, 23.67) | 24.09 (21.63, 27.81) | Z=-16.64 | < 0.001 |
Prepregnancy BMI, n (%) | |||||
Underweight [BMI < 18.5] | 1567 (11.79) | 1540 (12.09) | 27 (4.83) | χ²=386.83 | < 0.001 |
Normal [18.5 ≤ BMI < 24] | 8558 (64.37) | 8314 (65.28) | 244 (43.65) | ||
Overweight [24 ≤ BMI < 28] | 2334 (17.56) | 2180 (17.12) | 154 (27.55) | ||
Obesity [BMI ≥ 28] | 835 (6.28) | 701 (5.50) | 134 (23.97) | ||
Assisted reproductive technology, n(%) | χ²=13.51 | < 0.001 | |||
yes | 249 (1.87) | 227 (1.78) | 22 (3.94) | ||
no | 13,045 (98.13) | 12,508 (98.22) | 537 (96.06) | ||
Primigravida, n(%) | χ²=27.14 | < 0.001 | |||
No | 4341 (32.65) | 4215 (33.10) | 126 (22.54) | ||
Yes | 8953 (67.35) | 8520 (66.90) | 433 (77.46) | ||
Mode of delivery, n(%) | χ²=185.94 | < 0.001 | |||
Cesarean section | 6784 (51.03) | 6341 (49.79) | 443 (79.25) | ||
Vaginal delivery | 6510 (48.97) | 6394 (50.21) | 116 (20.75) | ||
Gender, n(%) | χ²=1.60 | 0.206 | |||
Male | 6840 (51.45) | 6567 (51.57) | 273 (48.84) | ||
Female | 6454 (48.55) | 6168 (48.43) | 286 (51.16) | ||
Weight, M(P25, P75) | 3380.00 (3100.00, 3660.00) | 3380.00 (3110.00, 3670.00) | 3170.00 (2762.50, 3540.00) | Z=-10.53 | < 0.001 |
Score, n(%) | χ²=12.87 | < 0.001 | |||
Below 7 | 135 (1.02) | 121 (0.95) | 14 (2.50) | ||
8–10 | 13,159 (98.98) | 12,614 (99.05) | 545 (97.50) |