Table 1 Demographic and clinical features of study population

Case number

53

55

Male:female

37:16

26:29

P = 0.02

Age^d

61.5(12.5)

65.8(13.8)

P = 0.10

 Married:single

37:16

42:12

P = 0.40

 Illiterate

1

3

P = 0.27

 Elementary/junior high school

13

21

 High school

20

17

 College/University/Graduate school

19

13

 Full/part time

26

18

P = 0.16

 Retired

27

36

 0

39

41

P = 0.20

 1

11

5

 2

2

7

 3

1

1

Bristol Stool Scale

P = 0.22

 1

1

0

 2

2

1

 3

3

5

 4

25

17

 5

16

16

 6

6

15

 A−/T-colon

15

11

P = 0.69

 D-colon

6

5

 Sigmoid colon

14

18

 Rectum/anus

18

20

 0 (in situ)

2

4

P < 0.01

 I

4

18

 II

11

13

 III

21

17

 IV

15

2

 None

4^b

0

P = 0.05

 Minimally invasive

25

36

 Laparotomy

24

18

 None

46

51

P = 0.31

 Colonostomy/ileostomy

7

4

 With:without

42:11^c

27:27

P < 0.01

 With:without

9:44

5:49^a

P = 0.47

Obstructive lesion

13

7

P = 0.11