Table 3.

Feasibility assessment of 14 methodological issues

Methodological issues	Findings	Evidence
1. Did the feasibility study allow a sample size calculation for the main trial?
2. What factors influenced eligibility and what proportion of those approached were eligible?
3. Was recruitment successful?
4. Did eligible participants consent?
5. Were participants successfully randomized and did randomization yield equality in groups?
6. Were blinding procedures adequate?
7. Did participants adhere to the intervention?
8. Was the intervention acceptable to the participants?
9. Was it possible to calculate intervention costs and duration?
10. Were outcome assessments completed?
11. Were outcomes measured those that were the most appropriate outcomes?
12. Was retention to the study good?
13. Were the logistics of running a multicenter trial assessed?
14. Did all components of the protocol work together?