Table 2 Postoperative characteristics

Maximum Hb drop, g/L

31.4 ± 4.1

30.3 ± 4.1

t = 2.44, P = 0.01

Amount of ALB infusion, g

61 ± 22

44 ± 18

M–W U = 6384.5, P< 0.001

Amount of wound effusion

 Little (0,1), n/%

51/32

65/45

M–W U = 9627.5, P = 0.005

 Moderate (2,3), n/%

45/28

42/29

 Large (4,5), n/%

65/40

38/26

Complications

 wound complication, n/%

27/16.8

11/7.6

χ² = 5.92, P = 0.02

 SSI, n/%

21/13.0

8/5.5

χ² = 5.04, P = 0.03

 PJI, n/%

16/9.9

4/2.8

χ² = 6.44, P = 0.01

 Nausea, n/%

29/18.0

23/15.9

χ² = 0.25, P = 0.62

 Vomiting, n/%

28/17.4

18/12.4

χ² = 1.48, P = 0.22

 Diarrhea, n/%

5/3.1

6/4.1

χ² = 0.24, P = 0.63

 Others, n/%

0

0

–

30-day readmission, n/%

14/8.7

3/2.1

χ² = 6.39, P = 0.01

Reasons of readmission

 Wound complications, n/%

2/1.2

2/1.4

χ² = 0.15^a, P = 0.69

 Dislocation, n/%

1/0.6

1/0.7

χ² = 0.40^a, P = 0.52

 Gastrointestinal diseases, n/%

8/5.0

0

–

 MI, n/%

1/0.6

0

–

 DVT, n/%

1/0.6

0

–

 Pneumonia, n/%

1/0.6

0

–

30-day reoperation, n/%

4/2.5

3/2.1

P = 1^b

Total hospital length of stay, days

10.7 ± 2.0

9.2 ± 1.8

M–W U = 6520.0, P < 0.001