fdr

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This topic contains 1 reply, has 2 voices, and was last updated by  Mite Mijalkov 4 months, 3 weeks ago.

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  • #26337 Reply

    Che Liu

    Very efficient software. I reached the last step of the fMRI Graph Analysis. I am comparing nodal measures between two groups. However, I cannot interpret some results. For example, when fdr (2-tailed)=0, what does this mean? Why not a value? Then anther fdr (2-tailed)=1.0000e-0.4. Two situations happens all through the result table.
    Thank you.

    #26459 Reply

    Mite Mijalkov
    Keymaster

    Hello,

    Thanks for using the software. Hopefully you find it very useful tool in your research.

    I understand your problem. These issues we have discussed in more detail on this forum and you can find a detailed explanation about the interpretation of the results at: http://braph.org/forums/topic/adjusted-p-values-for-group-comparisons/ , and the subsequent links that I provided there.

    In short, the fdr column gives you the highest p-value that comes out as significant after the multiple comparisons. Therefore, if you have fdr value of zero this means that no p-value is significant after multiple comparison. However, for nonzero fdr values, there exist a region (with associated p-value) that is statistically significant after the multiple comparisons. All regions with p-values less than the fdr value will be significant.

    I hope this explanations help you. If there is anything more that I can do to help, please do not hesitate to contact me.

    Best,
    Mite

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