95% CI

OR

Chi-square

p

NO IBS

IBS

Irritable bowel syndrome variable

NO

%

NO

%

Decreasein studying hours?

(0.8, 2.9)

1.52

1.6

0.206

15.1

26

16.3

28

Yes

40.1

69

28.5

49

No

Decrease in studying attention

(1.6, 5.7)

3.02

12.8

0.001

15.7

27

24.4

42

Yes

39.5

68

20.3

35

No

Change in studying performance

(1.4, 4.8)

2.59

8.99

0.003

16.3

28

23.3

40

Yes

39

67

21.5

37

No

Absence from lectures more than usual

(0.6, 10.6)

2.6

1.8

0.18

1.8

3

3.5

6

Yes

53.2

91

44.5

71

No

Decrease in attention during lectures

(1.2, 3.4)

2.27

6.34

0.012

14.6

25

19.9

34

Yes

40.9

70

24.6

42

No

Decrease in duties performance

(1.7, 6.97)

3.4

11.8

0.001

8.7

15

17.4

30

Yes

46.5

80

27.3

47

No

Decrease in participation in the classroom and extra-curricular activities

(1.5, 6.5)

3.12

9.7

0.002

8.1

14

15.7

27

Yes

47.1

81

29.1

50

No