Table 3.
Pre-defined criteria used to decide whether, or how, to proceed with a later, larger randomised control trial. Green colour: Fully acceptable and feasible. Yellow colour: Feasibility concern, changes to be decided. Red colour: Serious feasibility concerns, clear actions must be taken before a greater randomised control trial is planned
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Consent rate | > 70% | 50–70% | < 50% |
Recruitment rate | > 50% | 20–50% | < 20% |
Proportion of incomplete datasets | < 20% | 20–50% | > 50% |