Table 3 Intraoperative and postoperative outcomes before and after PSM

Operative time (min)

169.9 ± 81.5

232.9 ± 83.1

< 0.01

212.9 ± 91.3

226.9 ± 70.5

0.94

Blood loss (ml)

100.0 (50.0–112.5)

500.0 (250.0–1000.0)

< 0.01

100.0 (100.0–200.0)

500.0 (250.0–800.0)

< 0.01

Pringle maneuver

14 (29.2)

17 (54.8)

0.13

3 (17.6)

6 (35.3)

0.70

Transfusion

4 (8.3)

18 (58.1)

< 0.01

4 (23.5)

10 (58.8)

0.04

Type of resection

0.07

0.47

 Major resection

11 (22.9)

13 (41.9)

5 (29.4)

7 (41.2)

 Minor resection

37 (77.1)

18 (58.1)

12 (70.6)

10 (58.8)

R0 resection rate

100%

100%

-

100%

100%

-

Conversion

3 (6.3)

-

1 (5.8)

-

30-day mortality

0

2 (6.5)

-

0

1 (5.9)

-

Complications (Clavien–Dindo)

10 (20.8)

16 (54.2)

0.07

6 (35.3)

10 (58.8)

0.02

 I

2 (4.2)

2 (6.5)

2 (11.8)

2 (11.8)

 II

5 (10.4)

1 (3.2)

4 (23.5)

0

 III

2 (4.2)

5 (16.1)

0

4 (23.5)

 IV

1 (2.1)

6 (19.4)

0

2 (11.8)

 V

0

2 (6.5)

0

2 (11.8)

Postoperative hospital day

5.0 (4.0–8.0)

13. 0 (9.0–19.0)

< 0.01

7.0 (4.0–10.0)

11.0 (9.0–20.0)

0.01