Table 2.

Constructs of acceptability for injectable PrEP, adapted from the Theoretical Framework of Acceptability developed by Sekhon et al. [25]

Construct	Operationalization	Outcomes
Affective attitude	Overall feelings about an intervention	Satisfaction with, overall acceptability, liking or recommending injectable PrEP
Burden	Perceived amount of effort to participate in the intervention	Ease of use and facilitators; perceived challenges or concerns related to injectable PrEP
Ethicality	Extent of fit with an individual's value system	Discretion of product use; fitting with lifestyle preferences; perceived stigma
Intervention coherence	Extent that participant understands the intervention/how it works	Understanding how injectable PrEP prevents HIV
Opportunity costs	Extent that benefits, profits or values must be given up to engage in the intervention	Trade‐offs of taking injectable PrEP
Perceived effectiveness	Perception that intervention is likely to achieve its purpose	Degree of protection; perceived ability of injectable PrEP to prevent HIV
Self‐efficacy	Participant's confidence that they can perform the behaviours required to participate in the intervention	Ability to use/adhere to injectable PrEP; ability to regularly attend clinic visits to receive the injections

Abbreviation: PrEP, pre‐exposure prophylaxis.