Table 4 Multivariate analysis to predict the volume of intraoperative fluid administered

Age (per 1-year increase)

0.67

−0.67

2.02

0.325

Male sex (ref: female)

71.24

−8.23

112.25

0.061

Body mass index (per one-unit increase)

3.20

−1.92

8.33

0.221

Charlson Comorbidity Index score > 2 (ref: ≤ 2)

−4.14

−41.75

33.46

0.829

Spinal anesthesia

−0.26

−66.23

65.71

0.994

Use of intraoperative vasopressors

101.22

66.25

136.19

< 0.001

Long-acting anesthetics

46.36

−14.6

107.32

0.136

Blood loss

3.91

2.90

4.93

< 0.001