Table 1 The triggers of childhood asthma in Hangzhou

 Respiratory tract infection

85.1

 Cold air

53.1

 Exercise

14.6^a

 Tied

7.1

 Emotional changes

3.8^a

 House dust

20.3^a

 Pollen

11.1^a

 Renovation works in the home

8.7^a

 Smoke

7.8

 Paint

6.8

 Moldy smell

6.8

 Odor of cooking oil

6.2

 Mosquito–repellent incense

5.1^a

 Pets

3.3^a

 Perfume

3.0

 Disinfectant

0.9

 Fish and shrimp

14.0

 Egg

4.2

 Milk

3.5

 Peanut

2.0

 Other nuts

1.5

 Fruit

1.2

 Beans

1.1

 Wheat

0.6

 Vegetables

0.6

 Aspirin

0.3

Others

3.8