From: Intraoperative blood loss, postoperative drainage, and recovery in patients undergoing lumbar spinal surgery
Patients
Men (n = 74)
Women (n = 109)
P
Intraoperative bleeding (ml)
539.19 ± 424.21
437.06 ± 312.71
0.079
Immediate drainage (ml)
60.61 ± 68.39
53.67 ± 62.33
0.478
Final drainage (ml)
262.91 ± 273.56
239.86 ± 210.09
0.521