Table 1. Basic characteristics of study population.
| Parameters | Postpartum | P value | |
|---|---|---|---|
| Normal (n = 1,072,041) | CVD (n = 3,020) | ||
| Age, yr | 30.76 ± 4.10 | 31.08 ± 4.50 | < 0.01 |
| Old age (≥ 35 yr) | 179,468 | 620 | < 0.01 |
| Primiparity | 563,798 | 1,406 | < 0.01 |
| Multiple pregnancy | 15,063 | 43 | 0.93 |
| Cesarean delivery | 376,427 (35) | 1,206 (40) | < 0.01 |
| Induction | 253,377 | 669 | 0.06 |
| Vacuum delivery | 66,669 | 184 | 0.77 |
| Preeclampsia | 25,577 (2.39) | 121 (4.01) | < 0.01 |
| Gestational diabetes mellitus | 20,876 | 66 | 0.34 |
| Placenta previa | 8,993 | 23 | 0.64 |
| Placental abruption | 3,973 | 18 | 0.04 |
| Peripartum hysterectomy | 995 | 5 | 0.19 |
| Uterine arterial embolization | 890 | 4 | 0.35 |
| Postpartum hemorrhage | 77,920 | 208 | 0.42 |
| Thromboembolism | 1,040 | 17 | < 0.01 |
Values are presented as number (%) or mean ± standard deviation.
CVD = cerebrovascular disease.