Asthma phenotypes | Corresponding questions | Periods |
---|---|---|
Single phenotypes | ||
Ever bronchiolitis | Question 1: Did your child suffer from bronchiolitis during the last 4 months? | 0-4 months, 4–8 months and 8–12 months |
Ever wheezing | Question 2: Did your child ever have wheezing or whistling in the chest after the birth? | 0-8 months, 8–12 months |
Question 3: Did your child ever have wheezing or whistling in the chest during the last 4 months? | ||
Ever doctor-diagnosed asthma | Question 4: Did your child have a diagnosed asthma during the last 4 months? | 0-4 months, 4–8 months and 8–12 months |
Multi-dimensional phenotypes | ||
Bronchiolitis and wheezing | Questions 1, 2, 3 | 0-8 months, 8–12 months |
Doctor-diagnosed asthma with a history of bronchiolitis | Questions 1, 4 | 0-4 months, 4–8 months and 8–12 months |
Doctor-diagnosed asthma with wheezing | Questions 2, 3, 4 | 0-8 months, 8–12 months |
Doctor-diagnosed asthma with wheezing and a history of bronchiolitis | Questions 1, 2, 3, 4 | 0-8 months, 8–12 months |