Table 1 Feasibility framework areas and outcomes of interest.

Acceptability

To what extent is a new idea, programme, process or measure judged as suitable, satisfying, or attractive to programme deliverers? And perceived as such to users by deliverers?

Satisfaction

Intent to continue use

Perceived appropriateness

+++

Demand

To what extent is a new idea, programme process, or measure likely to be used (how much demand is likely to exist)?

Fit within organizational culture

Perceived positive/negative effects on organization

Actual use or intention to use

Perceived demand

++

Implementation

To what extent can a new idea, programme, process, or measure be successfully delivered to intended participants in some defined, but not fully controlled context?

Degree of execution

Success or failure of execution

Amount/type of resources needed to implement

±

Practicality

To what extent can a new idea, programme, process, or measure be carried out with intended participants using existing means, resources, and circumstances without outside intervention?

Factors affecting ease or difficulty of implementation

Efficiency, speed or quality of implementation

Positive/negative effects on target populations

Ability to carry out interventions

Cost analysis

+

Adaptation

To what extent can a new idea, programme, process, or measure be or be likely to be implemented as designed?

Degree to which similar outcomes obtained in a new format

Process outcomes comparison between interventions in two populations

++

Integration

To what extent can a new idea, programme, process, or measure be integrated within an existing system?

Perceived fit with infrastructure

Perceived sustainability

++

Expansion (scale-up)

To what extent can a new idea, programme, process, or measure be expanded to provide a scaled-up programme?

Cost to organization and policy bodies

Fit with organizational goals and culture

Positive/negative effects on organization

Disruption due to expansion component

+