That is the trouble. I am the only one who


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送交者: cornbug 于 2011-02-15, 18:59:56:

回答: take literature data instead 由 通知 于 2011-02-15, 18:33:51:

published those data and if I use those data for a priori power analysis, the sampling size will be too small for planning a study. I rather like to estimate it without using the old data. The effective size (small, medium and large) in a fresh calculation is a manipulator for the size required.

I don't believe stats in my gut. But the officials want it.




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