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    Multiple ANCOVAs: Post hoc Bonferroni, FDR, or can I use MANCOVA?

    Hi, I am comparing a protein level in multiple (40 to 4000 depending on the analysis) brain areas across three diagnostic groups, with a couple of covariates. I am using ANCOVA to compare the three groups. What is the best way to account for multiple comparisons? Where I am conducting large...
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    Difference needed for power in fixed population.

    Hi, I am designing a study to examine the difference made by implementing a new treatment strategy for a medical condition. I have become a little stuck on some of the statistics. I want to determine if the new strategy is effective. I can assume that the population number is fixed...