Summary of eligible and included participants in the study
| Cohort 1 | Cohort 2 | Cohort 3 | |
|---|---|---|---|
| *Eligible subjects were aged 2–18 years of age presenting to the RCH emergency department with acute asthma, who had an English speaking parent/carer, and who were able to complete the questionnaires. | |||
| Eligible* | 637 | 642 | 717 |
| Refused at onset/did not complete questionnaire 1 or 1A | 153 | 163 | 274 |
| Did not completed questionnaires 2 and 3 | 110 | 116 | 66 |
| Total no. analysed | 374 | 363 | 377 |