Table 2 Progression criteria

Recruitment rate

Target figure: 30 participants

≥ 70% of target number

51–69 % of target number

≤ 50% of target number

Retention rate

Target figure: 75% of participants randomised to intervention group will complete outcome measures at T1, T2, and T3 [36]

≥ 70% of target number

51–69% of target number

≤ 50% of target number

Acceptability

Intervention is described as acceptable by participants in its current form

Intervention is described as acceptable with recommended changes to improve participant experience

Intervention is described as unacceptable by participants

Action

Continue with intervention and study design with collaboration between research team, clinical collaborators, and PPI contributors

Consultation with research team, clinical collaborators, and PPI contributors regarding necessary amendments to the intervention and study design

No progression to further trial