Table 2 Surgical procedures and operative outcomes

Operation time (min)^a

264.3 ± 37.3

246.7 ± 49.1

0.145

Blood loss (mL)^a

18.5 ± 13.7

30.7 ± 22.2

0.008

Lymph node dissection^b

0.985

 D1

1

2

 D1+

21

41

Co-resection

0.247

 Yes

1

6

 No

21

37

Celiac branch of the vagus nerve

0.471

 Preserved

22

42

 Not preserved

0

1

Infra-pyloric artery

0.159

 Preserved

21

43

 Not preserved

1

0

Infra-pyloric vein

< 0.001

 Preserved

22

5

 Not preserved

0

38

Length of abdominal incision (cm)^a

3.8 ± 0.4

4.7 ± 0.6

< 0.001

Number of the harvested lymph nodes^a

39.5 ± 11.6

37.7 ± 14.8

0.635

Conversion to open laparotomy

0

0

–