Table 1 Maternal baseline information of 4 groups
Description | mild(n = 430) | Moderate-low(n = 392) | Moderate-high ( n = 292) | severe( n = 42) | P-Value |
|---|---|---|---|---|---|
Age, median(P25-P75) | 31(28,33) | 31(28,34) | 31(28,34) | 30(27,34) | 0.236 |
Advanced age (≥ 35 years), n(%) | 81(18.8%) | 73(18.6%) | 71(24.3%) | 10(23.8%) | 0.125 |
BMI before pregnancy, median(P25-P75) | 21.36(19.53,23.15) | 21.19 (19.59,23.10) | 20.80 (19.50,22.92) | 20.70 (18.70,22.87) | 0.355 |
Gravidity, median(P25-P75) | 2(1,3) | 2(1,3) | 2(1,3) | 2(1,4) | 0.514 |
Parity, median(P25-P75) | 0(0,0) | 0(0,0) | 0(0,0) | 0(0,0) | 0.867 |
IVF-ET, n(%) | 263(61.2%) | 249(63.5%) | 172(58.9%) | 22(52.4%) | 0.407 |
Dichorionic twins, n(%) | 335(77.9%) | 320(81.6%) | 226(77.4%) | 33(78.6%) | 0.492 |
Scarred uterine, n(%) | 27(6.3%) | 30(7.7%) | 26(8.9%) | 1(2.4%) | 0.340 |