So the stata commands that put in sample sizes, group means, and standard deviation to get out power are straightforward. Likewise, puting in power, group means, and standard deviations, and getting out sample size are straightforward.
It seems like it should be trivial to put in power and sample size and maybe a baseline group mean and get out a minimum detectable effect.... but stata doesn't seem to be able to do this with anything I've been able to put my hands on. If I had more time I'd do it by hand but I don't trust myself to do that right.
Anyone familiar with power analysis to get minimum detectable effects - preferably in stata, although possibly elsewhere?
Murphy Interview With Unbiased America
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