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Table 1 Population characteristics and demographics of 724 Giardia exposed and 847 controls six years after an outbreak of Giardia in Bergen, Norway 2004

From: The relationship between irritable bowel syndrome, functional dyspepsia, chronic fatigue and overactive bladder syndrome: a controlled study 6 years after acute gastrointestinal infection

 

All

Giardia exposed

Controls

 
 

N

n

%

n

%

p-valuea)

Gender

     

0.666

  Female

1058

492

68.0

566

66.8

 

  Male

513

232

32.0

281

33.2

Age

     

0.461

  18-40

1015

473

65.3

542

64.0

 

  41-60

424

197

27.2

227

26.8

   > 60

132

54

7.5

78

9.2

Marital status

     

0.003

  Single

340

185

25.6

155

18.4

 

  Married

1130

499

69.1

631

74.8

  Divorced

75

28

3.9

47

5.6

  Widowed

21

10

1.4

11

1.3

Level of education

     

<0.001

  Primary school

64

17

2.4

47

5.6

 

  Secondary school

356

134

18.7

222

26.6

  University/college

1134

567

79.0

567

67.8

Main occupation

     

0.097

  Working

1249

561

78.0

688

81.5

 

  Unemployed/retired

182

88

12.2

94

11.1

  Student

100

49

6.8

51

6.0

  Other

32

21

2.9

11

1.3

  1. Groups were matched by gender and age
  2. a) p-value for the difference between the Giardia exposed and the control group was calculated with Pearson’s exact χ2 test