Table 1 Demographic and clinical characteristics for the ERAS group and CT group

Age(years)

78.04 ± 5.74

78.74 ± 6.56

Male:Female

34:42

40:34

Tumor location

 Right colon and flexure

30

22

 Transverse colon

2

12

 Left colon and left flexure

10

8

 Rectum

18

6

 Sigmoid

16

26

Scope of surgery

 Right hemicolectomy

28

34

 Left hemicolectomy

10

6

 Anterior/Low anterior resection

12

8

 Abdominoperineal resection

4

0

 Radical resection of sigmoid carcinoma

18

24

 Other operations

4

2

Preoperative Comorbidities

 Preoperative anemia

15

12

 Preoperative hypoproteinemia

6

10

 Coronary heart disease

5

13

 Diabetes mellitus

18

8

 Hypertensive disease

33

16

 Cerebral infarction

5

7

 Preoperative nutritional support

19

18