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?

  • “I suspect (but don’t have good evidence) that people are more likely to stay involved if they are getting “rewards” from continuing involvement. What constitutes a reward is likely to be context specific – but (I suspect) that cash or voucher incentives won’t always be seen as a reward.” (A trial methodologist)
  • “Follow up is essential both for the doctors and particularly the participants. Too little feed back is given to patients at times. In some cases patients do their bit and then don’t get enough back. Follow is better done at home, I feel. Perhaps family members could contribute too.” (Patient or public member involved in a trial (as a participant or parent/carer of a participant, or as a contributor to design/delivery of trial))