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Table 6 Adjusted OR for pre-school asthma in relation to exposure before asthma onset by allergic sensitization

From: Early life swimming pool exposure and asthma onset in children – a case-control study

 

Exposed with SPT-

Unexposed with SPT+

Exposed with SPT+

 

OR

(95% CI)

OR

(95% CI)

OR

(95% CI)

1y (n = 102)

1.69

(0.78

–

3.67)

8.22

(4.32

–

15.64)

13.68

(6.44

–

29.08)

2y (n = 62)

0.96

(0.30

–

3.08)

9.77

(4.00

–

23.90)

19.85

(7.77

–

50.71)

3y (n = 48)

1.29

(0.33

–

5.04)

11.47

(3.39

–

38.84)

24.14

(7.57

–

76.96)

4y (n = 35)

0.83

(0.13

–

5.20)

12.62

(2.43

–

65.44)

24.43

(5.29

–

112.80)

5y (n = 26)

0.37

(0.05

–

2.79)

10.16

(1.85

–

55.91)

11.38

(2.35

–

55.12)

6y (n = 18)

0.61

(0.06

–

6.25)

6.66

(0.52

–

84.91)

9.10

(1.09

–

76.35)

  1. Analysis at 1 years = the relationship between exposure in the first year of life and asthma onset between 1 and 6 years of age. Analysis at 2 years = the relationship between exposure in the first two years of life and asthma onset between 2 and 6 years of age. Analysis at 3 years = the relationship between exposure in the first three years of life and asthma onset between 3 and 6 years of age, etc. The reference group is unexposed with SPT-. SPT + =positive skin prick test; SPT- = negative skin prick test
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Environmental Health

ISSN: 1476-069X