Table 1.

Theoretical Framework of Acceptability constructs

Construct	Definition
Ethicality	Extent to which the intervention has good fit with an individual’s value system
Affective attitude	How an individual feels about the intervention;
Intervention coherence	Extent to which the participant understands the intervention and how it works
Burden	Perceived amount of effort required to participate in the intervention
Opportunity costs	Extent to which benefits, profits, or values must be given up to engage in the intervention.
Self-efficacy	Participant’s confidence that they can perform the behaviour(s) required to participate in the intervention
Perceived effectiveness	Extent to which the intervention is perceived to be likely to achieve its purpose