Table 1 Patient characteristics

0.939

 Male

40

23

17

 Female

19

10

9

Age (range)*

69 (46–90)

68 (46–90)

70 (50–85)

0.367

0.180

 Positive

15

11

4

 Negative

44

22

22

Body mass index, kg/m² (range)*

–

20.9 (17.0–41.5)

20.7 (13.2–29.3)

0.803

–

 Abdominal pain/fullness

34

21

13

 Vomiting

4

3

1

 Constipation

5

3

2

 Bloody stool

7

3

4

 Diarrhea

1

1

0

 Anemia

4

0

4

 Others

4

2

2

0.366

 Transverse

2

0

2

 Descending

9

6

3

 Sigmoid

38

21

17

 Rectosigmoid

10

6

4

 Positive

27

16

11

0.749

 Negative

32

17

15

Maximum of dilatation of the colon, mm (range)*

–

59.9 (33.0–95.3)

48.8 (29.2–76.8)

0.099

CEA, ng/ml (range)*

10.0 (2.9–490.8)

6.6 (1.0–1232.0)

0.242

TDT

33

–

–

CMS

26

–

–

0.441

 II

22

11

11

 III

17

11

6

 IV

20

11

9