Table 4 Associations between overactive bladder syndrome (OAB) and three different functional disorders in participants who could be classified with or without OAB (716 Giardia exposed and 833 controls) by stratification of comorbid conditions six years after an outbreak of Giardia in Bergen, Norway 2004

No comorbidity^a)

307

38

12.4

1.00

reference

617

67

10.9

1.00

reference

Irritable bowel syndrome

  All IBS

284

60

21.1

1.90

(1.22, 2.95)

98

24

24.5

2.66

(1.57, 4.50)

  Without FD

166

27

16.3

1.38

(0.81, 2.35)

67

17

25.4

2.79

(1.52, 5.11)

  Without CF

145

23

15.9

1.34

(0.76, 2.34)

68

14

20.6

2.13

(1.12, 4.04)

  IBS alone

93

11

11.8

0.95

(0.46, 1.94)

52

12

23.1

2.46

(1.23, 4.93)

Chronic Fatigue

  All CF

221

66

29.9

3.01

(1.93, 4.70)

96

26

27.1

3.05

(1.82, 5.11)

  Without FD

138

37

26.8

2.59

(1.56, 4.31)

67

17

25.4

2.79

(1.52, 5.11)

  Without IBS

84

30

35.7

3.93

(2.24, 6.89)

64

15

23.4

2.51

(1.33, 4.73)

  CF alone

65

22

33.8

3.62

(1.96, 6.71)

52

12

23.1

2.46

(1.23, 4.93)

Functional dyspepsia

  All FD

145

39

26.9

2.61

(1.58, 4.29)

53

10

18.9

1.91

(0.92, 3.98)

  Without IBS

29

7

24.1

2.25

(0.90, 5.63)

23

3

13.0

1.23

(0.36, 4.25)

  Without CF

64

12

18.8

1.63

(0.80, 3.34)

30

2

6.7

0.59

(0.14, 2.52)

  FD alone

14

1

7.1

0.55

(0.69, 4.28)

16

0

0.0

n.a.

n.a.