|
Characteristics |
n |
(%) |
Sex |
Sex |
3,089 |
|
|
Boy |
1,576 |
(51.0) |
|
Girl |
1,513 |
(49.0) |
Asthma incidence |
Asthma incidence |
2,934 |
|
|
Age 0-12 months |
78 |
(2.7) |
|
Age 12-24 months |
140 |
(4.8) |
|
Age 24-36 months |
88 |
(3.0) |
|
Age 0-36 months |
306 |
(10.4) |
|
None |
2,628 |
(89.6) |
Wheezing incidence |
Wheezing incidence |
2,934 |
|
|
Age 0-12 months |
586 |
(20.0) |
|
Age 12-24 months |
398 |
(13.6) |
|
Age 24-36 months |
134 |
(4.6) |
|
Age 0-36 months |
1,118 |
(38.1) |
|
None |
1,816 |
(61.9) |
Total serum IgE level in 2-year-old children |
Total serum IgE level in
2-year-old children |
2,900 |
|
|
High: ≥180 IU/mL |
282 |
(9.7) |
|
Low: <180 IU/mL |
2,618 |
(90.3) |
Total serum IgE level during pregnancy |
Total serum IgE level during
pregnancy |
3,089 |
|
|
High: ≥214 IU/mL |
557 |
(18.0) |
|
Low: <214 IU/mL |
2,532 |
(82.0) |
Urinary cotinine level in mid-pregnancy |
Urinary cotinine level in
mid-pregnancy |
3,089 |
|
|
>36.8 μg/g creatinine |
175 |
(5.7) |
|
0.31–36.8 μg/g creatinine |
1,022 |
(33.1) |
|
<0.31 μg/g creatinine |
1,892 |
(61.2) |
Passive smoke after birth |
Passive smoke after birth |
3,089 |
|
|
Yes |
863 |
(27.9) |
|
No |
2,226 |
(72.1) |
Presence of indoor pets |
Presence of indoor pets |
3,089 |
|
|
Yes |
543 |
(17.6) |
|
No |
2,546 |
(82.4) |
Lower respiratory tract inflammation |
Lower respiratory tract
inflammation |
3,089 |
|
|
Yes |
471 |
(15.2) |
|
No |
2,618 |
(84.8) |
Respiratory syncytial virus infection |
Respiratory syncytial virus
infection |
3,089 |
|
|
Yes |
606 |
(19.6) |
|
No |
2,483 |
(80.4) |
Area |
Area |
3,089 |
|
|
Cold area |
1,025 |
(33.2) |
|
Warm low-humidity area |
1,202 |
(38.9) |
|
Warm high-humidity area |
862 |
(27.9) |