95% CI

OR

Chi-square

P

NOIBS

IBS

Irritable bowel syndrome variable

%

No.

%

No.

Sex:

(1.38, 4.92)

2.61

8.916

0.003*

27.20%

47

31.80%

55

Female

28.30%

49

12.70%

22

Male

Academic year:

-

-

6.048

0.418

9.30%

16

4.10%

7

1^st

11.60%

20

8.70%

15

2^nd

7.60%

13

5.80%

10

3^rd

5.20%

9

4.20%

8

4^th

3.50%

6

7%

12

5^th

15.10%

26

11%

19

6^th

2.90%

5

3.50%

6

Intern

Marital status:

(0.41, 1.98)

0.9

0.068

0.794

46.20%

80

36.40%

63

Single

9.20%

16

8.10%

14

Married

Living condition:

-

-

0.282

0.869

44.50%

77

37%

64

With family

8.10%

14

5.80%

10

Private

2.90%

5

1.70%

3

School dormitory