Increasing recruitment to randomised trials: a review of randomised controlled trials

Poor recruitment to randomised controlled trials (RCTs) is a widespread and important problem. With poor recruitment being such an important issue with respect to the conduct of randomised trials, a systematic review of controlled trials on recruitment methods was undertaken in order to identify strategies that are effective.We searched the register of trials in Cochrane library from 1996 to end of 2004. We also searched Web of Science for 2004....