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  1. C

    Power calculation

    Hi, I am in need of some help on clarifying a power calculation to determine sample size for a trial. The attached image shows a calculation that someone else completed and I am wanting to change a few factors including the true_diff/ delta to 1. In the calculation, I just want clarification...
  2. C

    4-arm trial design

    Hi! I am conducting a research project where I will be conducting a taste trial. I am wondering about the possibility of a 4-arm trial or whether its best to stick to 2-arms? These would be the options: 2-arm: drug and formulation 4-arm: drug, formulation, food, food + formulation Wanting to...