Table 1 Differences in basic characteristics and risk factors between the VTE group and control group.
From: Analysis on the causes of unsatisfactory prevention effect of postpartum VTE in Chinese women
Variables | VTE group (n = 141) | Control group (n = 423) | z/χ2 | P |
|---|---|---|---|---|
Age (years) | 33.3 ± 4.8 | 33.1 ± 4.1 | − 1.141 | 0.254 |
BMI (kg/m2) | 27.1 ± 3.6 | 26.8 ± 3.0 | − 0.663 | 0.508 |
Length of stay (days) | 8.7 ± 4.7 | 5.7 ± 5.5 | − 8.893 | < 0.001 |
Gestational age at delivery (weeks) | 36.7 ± 3.0 | 37.7 ± 2.1 | − 2.515 | 0.012 |
D- dimer (mg/L) | 6.0 ± 7.7 | 2.4 ± 1.7 | − 4.234 | < 0.001 |
Score after delivery | 2.1 ± 1.0 | 1.9 ± 1.1 | − 0.346 | 0.730 |
Age ≥ 35 (years) | 53 (37.6%) | 196 (46.3%) | 3.281 | 0.07 |
BMI ≥ 30 (kg/m2) | 15 (10.6%) | 42 (9.9%) | 0.059 | 0.809 |
Multiple pregnancies | 32 (22.7%) | 85 (20.1%) | 0.435 | 0.510 |
Preeclampsia | 11 (7.8%) | 28 (6.6%) | 0.23 | 0.632 |
Parity ≥ 3 (times) | 4 (2.8%) | 19 (4.5%) | 0.740 | 0.390a |
PPH | 14 (9.9%) | 12 (2.8%) | 12.096 | < 0.001 |
Premature birth | 42 (29.8%) | 82 (19.4%) | 6.671 | 0.01 |
Autoimmune system diseases | 10 (7.1%) | 12 (2.8%) | 5.108 | 0.024 |
Delivery mode | 18.626 | < 0.001 | ||
Vaginal delivery | 6 (4.3%) | 58 (13.7%) | 10.309 | 0.001 |
Elective cesarean delivery | 59 (41.8%) | 163 (38.5%) | 5.652 | 0.017 |
Emergency cesarean delivery | 48 (34%) | 162 (38.3%) | 6.758 | 0.009 |
Vaginal delivery transfer cesarean | 28 (19.9%) | 40 (9.5%) | 10.802 | 0.001 |
Others | 5 (3.5%) | 9 (2.1%) | 0.879 | 0.348 |
VTE history and VTE family history, cancer, heart failure, infection, prolonged labor, etc |
