Table 1.

Inclusion/exclusion criteria

Restriction area	Inclusion	Exclusion	Explanation
Study design	Any primary study design highlighting beliefs and opinions about asthma triggers (concept of interest) in CYP and/or parents/carers of children with asthma and trigger avoidance strategies	Studies designed to evaluate effectiveness of an intervention. However, if baseline measures were taken to establish beliefs before an intervention, these could be included if they could be extracted in isolation	The aim of the scoping review is to understand whether triggers are noted and/or avoided by CYP/parents under usual care, rather than those who have undergone an intervention trial. Incorporating all designs allowed for broad evidence scoping
Studies exploring other triggers	Those including indoor triggers, in any country (context) where findings relating to these can be extracted separately	Studies exploring only beliefs around psychological triggers or outdoor environmental triggers	Numerous studies were noted exploring only psychological or outdoor triggers on developing and piloting search strategies
Participants	CYP (under 18 years) or parents/caregivers of CYP with asthma or asthma and co‐existing allergic sensitisation—if reported	Adult only participants with asthma or unclear descriptions of diagnoses (e.g., wheeze rather than asthma). Studies including only those under the age of 5 years/parents of under 5s with asthma, were ineligible	Due to differences in asthma and asthma management between adults and those under 18 years. 23 , 24 Asthma is difficult to diagnose in under 5s. 2 , 25

Abbreviation: CYP, children and young people.