Table 1 Baseline characteristics of the two groups

Age (years)

59 (38–75)

57 (32–73)

0.776

Gender

0.419

 Male

4

5

 Female

11

6

BMI (kg/m²)

21.23 (17.48–30.76)

24.02 (17.63–32.44)

0.087

Underlying disease

0.689

 Yes

5

5

 No

10

6

Distance between tumor and dentate line (cm)

2.5 (0.3–4.0)

1.9 (0.3–4.8)

0.099

Preoperative tumor stage

0.937

 I

2

2

 II

9

6

 III

4

3

 IV

0

0

Degree of differentiation

0.405

 Well differentiated

2

1

 Moderately differentiated

11

10

 Poorly differentiated

2

0

Preoperative neoadjuvant therapy

0.701

 Yes

7

4

 No

8

7

ASA grade

0.660

 I

6

4

 II

8

5

 III

0

0

 IV

1

2

 V

0

0