Hi FreeSurfer Experts,
On this page (https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/QdecMultipleComparisons), it says: "In particular, thresholds of 1.3, 2, 2.3, 3, 3.3 and 4, corresponding to p-values of 0.05, 0.01, 0.005, 0.001, 0.0005 and 0.0001, which are common thresholds."
I am wondering how these thresholds were computed.
In my own computation, I found z-value to be the following, but neither one-sided nor two-sided matches the thresholds of 1.3, …, 4 as shown above?
one-sided: p-value=0.0500, z-value=1.6 p-value=0.0100, z-value=2.3 p-value=0.0050, z-value=2.6 p-value=0.0010, z-value=3.1 p-value=0.0005, z-value=3.3 p-value=0.0001, z-value=3.7
two-sided: p-value=0.0500, z-value=2.0 p-value=0.0100, z-value=2.6 p-value=0.0050, z-value=2.8 p-value=0.0010, z-value=3.3 p-value=0.0005, z-value=3.5 p-value=0.0001, z-value=3.9
Thanks! Daniel
-- Yung-Jui "Daniel" Yang, PhD Postdoctoral Researcher Yale Child Study Center New Haven, CT (203) 737-5454