Table 2

Matched univariate conditional logistic regression analysis of selected dichotomous risk factors among cases of giardiasis and matched controls, water-supply zone A, Bergen municipality 1/9 – 15/11 2004.

Cases (%) (n = 27)

Controls (%) (n = 54)

Matched OR

95% CI

p-value


Having children in household

8

33%

17

34%

1.2

0.3 – 4.5

0.8

Having dog/cat

8

30%

7

13%

5.3

1.0 – 26.6

0.04

Salad

20

87%

45

90%

0.7

0.2 – 3.3

0.7

Tomato

19

83%

44

85%

0.8

0.2 – 3.2

0.8

Cucumber

20

83%

41

82%

1.2

0.3 – 4.3

0.8

Raw leek

9

38%

9

18%

7.1

0.9 – 58.9

0.1

Mineralwater

11

42%

27

51%

0.6

0.2 – 1.8

0.4

Coffee

18

72%

28

52%

2.4

0.7 – 7.9

0.2

Beer

8

33%

8

15%

3.3

0.9 – 12.7

0.06

Water at home (>5 glass)

20

74%

12

22%

7.3

2.4 – 21.8

<0.01

Water at the gym

10

38%

8

15%

5.2

1.1 – 26

0.03

Water in cafe or restaurant

10

38%

13

25%

1.8

0.6 – 5.2

0.3

Drinking water at work

14

56%

24

45%

1.6

0.6 – 4.4

1.6

Supermarket A

22

88%

27

55%

6.5

1.4 – 29.2

<0.01

Supermarket B

12

52%

19

40%

1.2

0.4 – 3.5

0.7


NOTE. CI, confidence interval; OR, odds ratio.

Nygård et al. BMC Public Health 2006 6:141   doi:10.1186/1471-2458-6-141

Open Data