Table 2.
Comparison of clinical data between the PPH and non-PPH groups in the training cohort [n (%)]/(x̅ ± sd)
| Variable | PPH (n=39) | Non-PPH (n=181) | t/χ2 | P |
|---|---|---|---|---|
| Age | 40.31±2.53 | 38.12±2.95 | 4.300 | < 0.001 |
| Marital status | 0.040 | 0.842 | ||
| Unmarried | 1 (2.56) | 3 (1.66) | ||
| Married | 38 (97.44) | 178 (98.34) | ||
| Educational background | 0.128 | 0.938 | ||
| Primary school | 4 (10.26) | 21 (11.60) | ||
| Middle and high school | 11 (28.21) | 54 (29.83) | ||
| College | 24 (61.54) | 106 (58.56) | ||
| Pre-pregnancy BMI (kg/m2) | 22.93±1.47 | 22.35±2.67 | 1.313 | 0.191 |
| Pregnancy BMI (kg/m2) | 27.91±3.04 | 27.83±2.96 | 0.150 | 0.881 |
| Gestational age (week) | 38.33±2.06 | 38.01±2.24 | 0.820 | 0.413 |
| Number of Pregnancies | 0.913 | 0.634 | ||
| 1-2 times | 30 (76.92) | 135 (74.59) | ||
| 3-4 times | 7 (17.95) | 41 (22.65) | ||
| > 4 times | 2 (5.13) | 5 (2.76) | ||
| Placenta previa | 20.142 | < 0.001 | ||
| No | 26 (66.67) | 169 (93.37) | ||
| Yes | 13 (33.33) | 12 (6.63) | ||
| Amniotic fluid contamination | 0.114 | 0.736 | ||
| No | 34 (87.18) | 154 (85.08) | ||
| Yes | 5 (12.82) | 27 (14.92) | ||
| HDP | 7.916 | 0.005 | ||
| No | 26 (66.67) | 155 (85.64) | ||
| Yes | 13 (33.33) | 26 (14.36) | ||
| GDM | 0.010 | 0.922 | ||
| No | 33 (84.62) | 152 (83.98) | ||
| Yes | 6 (15.38) | 29 (16.02) | ||
| Uterine fibroids | 0.123 | 0.726 | ||
| No | 33 (84.62) | 157 (86.74) | ||
| Yes | 6 (15.38) | 24 (13.26) | ||
| Fetal macrosomia | 3.279 | 0.070 | ||
| No | 33 (84.62) | 171 (94.48) | ||
| Yes | 6 (15.38) | 10 (5.52) | ||
| Uterine atony | 9.615 | 0.002 | ||
| No | 19 (48.72) | 136 (75.14) | ||
| Yes | 20 (51.28) | 45 (24.86) | ||
| Scarred uterus | 17.387 | < 0.001 | ||
| No | 25 (64.10) | 163 (90.06) | ||
| Yes | 14 (35.90) | 18 (9.94) | ||
| Assisted reproduction | - | 0.445* | ||
| No | 38 (97.44) | 179 (98.90) | ||
| Yes | 1 (2.56) | 2 (1.10) |
Note: PPH, postpartum hemorrhage; BMI, body mass index; HDP, hypertensive disorder of pregnancy; GDM, gestational diabetes mellitus;
*
Fisher’s exact tests.