placebo

  1. W

    Clinical Trial - sample size for statistically comparable data?

    Hi Everyone In a nutshell - I am looking to undertake an 8 week clinical trial of an equine veterinary health product. I am wanting to analyse corticosteroid concentrations deposited in the keratin of mane hair at Day 1 and then Day 56. I was hoping that 20 horses would be a sufficient...
  2. M

    Structural equation modeling - predictor measured in different group

    Dear all, I am kind of stuk on the following problem: what if you would like to create a model, with several predictors. only one important predictor is measured in a different sample. The characteristics of this sample are similar. for example, you would prepare a model to describe a...