What are the best ways to predict recruitment rates to a randomised trial and what impact do such predictions have on recruitment?

  • “Questionnaires to consultants about anticipated recruitment rates, prior to the trial commencing, are extremely unreliable and we need a better way of estimating the patient populations”
  • “Gaining better estimates of prevalence in order to estimate realistic recruitment rates (where such data do not obviously exist) as an initial phase of the study before the trial starts”
  • “Can a realistic estimate be made of how possible it is to recruit into a trial?”