NTT Group n = 53

TT Group n = 90

p value

Age, year

66.9 ± 10.2

67.3 ± 8.4

0.82

Gender (male/female)

34/19

39/24

0.6

Body mass index, kg/m²

22.2 ± 2.7

22.3 ± 3.5

0.89

Tumor size (cm)

41.4 ± 18.8

35.7 ± 17.3

0.09

Dukes’ stage A/B/C

20/16/17

32/28/30

0.76

Operation time (min)

183.1 ± 43.4

166.4 ± 48.7

0.06

Blood loss (ml)

56.6 ± 88.2

28.2 ± 57.6

0.04

Preserving Left colic Artery

49 (92.5%)

41 (45.6%)

0.05

Number of staple firing

1.18

1.15

0.63

Anastomotic leakage

7 (13.2%)

2 (2.2%)

0.03

Re-operation

2 (3.7%)

0 (0%)

0.07

Postoperative stay, day

14.7 ± 22.3

9.9 ± 5.1

0.11