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Table 4 Top 10 research questions prioritised

From: What are the most important unanswered research questions in trial retention? A James Lind Alliance Priority Setting Partnership: the PRioRiTy II (Prioritising Retention in Randomised Trials) study

Overall ranking

Research question

1

What motivates a participant’s decision to complete a clinical trial?

2

How can trials make better use of routine clinical care and/or existing data collection to improve retention?

3

How can trials be designed to minimise burden on staff and participants and how does this affect retention?

4

What are the best ways to encourage trial participants to complete the tasks (e.g. attend follow-up visits, complete questionnaires) required by the trial?

5

How does involvement of patients/the public in planning and running trials improve retention?

6

How could technology be best used in trial follow-up processes?

7

What are the most effective ways of collecting information from participants during a trial to improve retention?

8

How does a participant’s ongoing experience of the trial affect retention?

9

What information should trial teams communicate to potential trial participants to improve trial retention?

10

How should people who run trials plan for retention during their funding application and creation of the trial (protocol development)?