Variable

Mean

Range

amount of bleeding (ml)

925

500 - 3200

duration of operation (minutes)

103

84 - 130

length of preoperative stay

4

2 - 11

Gestational age of the newborn (weeks)

36.1 ± 2.7

30.2 - 40

Neonatal weight (grams)

2803 ± 635

Apgar score

9.3 ± 1.1