Table 2 Perioperative findings

Gestational age at delivery (weeks)^a

36.0 ± 2.1

36.3 ± 1.6

Birth weight (gm)^a

4783.1 ± 832.8

4958.0 ± 768.4

Emergency delivery^b

348 (43.2%)

68 (46.3%)

Operation time (min)^a

51.3 ± 13.2

59.8 ± 17.7

Estimated blood loss (mL)^a

611.9 ± 166.4

725.2 ± 256.1

Hemoglobin change^a

2.0 ± 1.2 (n = 803)

2.4 ± 1.4 (n = 142)

Postpartum hemorrhage^b

41 (5.1%)

28 (19.0%)

Transfusion during admission^b

60 (7.4%)

27 (18.4%)

Within 24 h transfusion^b

40 (5.0%)

22 (15.0%)

> 24 h transfusion^b

24 (3.0%)

5 (3.4%)

Additional procedures needed to control the bleeding^b

5 (0.6%)

2 (1.4%)