Table 1 Comparison of general clinical characteristics between the training and validation sets.
From: Nomogram for predicting postpartum hemorrhage in women with hypertensive disorders of pregnancy
Variables | Training set (n = 336) | Validation set (n = 144) | χ2/t | P |
|---|---|---|---|---|
PPH | 0.212 | 0.645 | ||
No | 254 (75.6%) | 106 (73.6%) | ||
Yes | 82 (24.4%) | 38 (26.4%) | ||
Age (years) | 30.35 ± 3.29 | 30.41 ± 3.12 | 0.186 | 0.853 |
SBP (mmHg) | 154.17 ± 12.01 | 154.46 ± 12.47 | 0.240 | 0.811 |
DBP (mmHg) | 103.25 ± 7.58 | 103.67 ± 8.54 | 0.535 | 0.593 |
BMI (kg/m²) | 25.39 ± 2.92 | 25.41 ± 3.19 | 0.067 | 0.947 |
Gestational age (weeks) | 36.79 ± 1.98 | 36.83 ± 1.71 | 0.211 | 0.833 |
Mode of delivery | 0.020 | 0.888 | ||
Cesarean section | 147 (43.8%) | 64 (44.4%) | ||
Vaginal delivery | 189 (56.2%) | 80 (55.6%) | ||
Number of pregnancies | 0.139 | 0.709 | ||
< 3 | 237 (70.5%) | 104 (72.2%) | ||
≥ 3 | 99 (29.5%) | 40 (27.8%) | ||
Proteinuria | 1.700 | 0.192 | ||
No | 101 (30.1%) | 52 (36.1%) | ||
Yes | 235 (69.9%) | 92 (63.9%) | ||
Gestational diabetes mellitus | 0.091 | 0.763 | ||
No | 304 (90.5%) | 129 (89.6%) | ||
Yes | 32 (9.5%) | 15 (10.4%) | ||
Fetal weight | 0.011 | 0.915 | ||
< 4 kg | 228 (67.9%) | 97 (67.4%) | ||
≥ 4 kg | 108 (32.1%) | 47 (32.6%) | ||
PT (s) | 13.10 ± 2.94 | 13.05 ± 2.58 | 0.177 | 0.860 |
APTT (s) | 32.19 ± 4.26 | 32.39 ± 3.61 | 0.493 | 0.623 |
FIB (g/L) | 2.47 ± 0.96 | 2.63 ± 1.11 | 1.595 | 0.111 |
TT (s) | 13.99 ± 2.70 | 14.03 ± 2.55 | 0.151 | 0.880 |
PLT (×109/L) | 202.32 ± 28.45 | 203.05 ± 31.35 | 0.250 | 0.803 |
25(OH)D (ng/mL) | 29.68 ± 6.60 | 29.45 ± 5.67 | 0.364 | 0.716 |
HGF (ng/mL) | 54.23 ± 10.47 | 55.46 ± 11.24 | 1.154 | 0.249 |
ET (pg/mL) | 87.37 ± 11.67 | 87.71 ± 11.77 | 0.292 | 0.771 |
