There are approximately 100,000 children with asthma in Scotland. We cannot invite them all to take part so will only include children with asthma who are attending hospital asthma clinics.
We will invite children attending a hospital asthma clinic who have an asthma diagnosis and are aged between 2 to 16 years; asthma can be tricky to diagnose in children younger than 2 and we will not be inviting these youngsters to join the study.
We wil also invite children aged 5 years and older who are looked after by their general practictioner and have a diagnosis of asthma.
Children with other respiratory conditions, for example cystic fibrosis, will not be invited to take part since the other respiratory condition may affect some of the results.