Table 3 Relationship between maternal smoking during infancy and risk of developing allergic diseases stratified by paternal smoking at 5.5 years of age

Allergic rhinitis/ Allergic conjunctivitis

0

3,600 / 13,468 (26.7)

1

-

2,002 / 7,206 (27.8)

1

-

≦ 10

30 / 82 (36.6)

1.37

1.03–1.82

200 / 595 (33.6)

1.21

1.07–1.36

≧ 11

8 / 33 (24.2)

0.91

0.50–1.66

54 / 144 (37.5)

1.35

1.09–1.67

Food allergy

0

1,701 / 13,084 (13.0)

1

-

932 / 7,002 (13.3)

1

-

≦ 10

9 / 74 (12.2)

0.94

0.51–1.73

101 / 560 (18.0)

1.36

1.12–1.63

≧ 11

4 / 34 (11.8)

0.9

0.36–2.27

21 / 126 (16.7)

1.25

0.84–1.86

Bronchial asthma

0

2,417 / 13,283 (18.2)

1

-

1,587 / 7,216 (22.0)

1

-

≦ 10

22 / 85 (25.9)

1.42

0.99–2.04

176 / 600 (29.3)

1.33

1.17–1.52

≧ 11

8 / 36 (22.2)

1.22

0.66–2.25

57 / 152 (37.5)

1.71

1.38–2.1

Atopic dermatitis

0

2,001 / 13,156 (15.2)

1

-

1,180 / 7,060 (16.7)

1

-

≦ 10

11 / 78 (14.1)

0.93

0.54–1.61

138 / 581 (23.8)

1.42

1.22–1.66

≧ 11

6 / 35 (17.1)

1.13

0.54–2.34

35 / 131 (26.7)

1.6

1.2–2.13