Table 2.

Assignments

Factor	Assignment
Sex	Male = 1, female = 0
Surgery time (minute)	≥ 180 = 1, < 180 = 0
Bleeding amount (mL)	≥ 150 = 1, < 150 = 0
Pelvic radiation injury	Yes = 1, No = 0
Intraoperative blood transfusion	Yes = 1, No = 0