randomized control trial

  1. victorxstc

    A curious design - What is the type / name of this rare design?

    There is this split-mouth randomized clinical trial, in which one side of the mouth receives a particular treatment, and the other side receives another treatment (usually used as the control treatment); (we do this after randomization of the left/right sides of the mouth to treatments A and X...
  2. A

    Sample Size calculation - "difference in mean differences"

    We have two independent patient groups in an Individual RCT ("treatment" and control["standard care"]). The treatments will result in a change of scores on a psychometric scale, from baseline to end-line. A baseline assessment was conducted using this scale, and thereafter, the participants were...
  3. J

    Is it appropriate to use Mann-Whitney U test for each of four outcomes when outcomes are mutually exclusive?

    I have an experiment in which we randomize primate subjects into high condition (n=9) and low condition (n=8) groups, and document each subject's behavioral response to 15 consecutive food exposure trials. Each subject's behavioral response during every trial is classified into one of four...
  4. G

    Randomized Control Trial Design Question

    Imagine I am designing a RCT that is trying to measure the effectiveness of a voluntary job skills training program for new immigrants to be delivered BEFORE they arrive in their new country. I want to know whether the training will result in them being employed at a higher rate in their new...