I would say yes, but I've seen plenty of pubs that do not correct. The
bonferroni correction is fine. You could also try FDR (though on 4
points it might not make much sense).
On 01/10/2017 01:47 PM, neuroimage analyst wrote:
> Hi,
>
> I extracted thalamic, caudate, and putamen volume (left hemisphere),
> and cingulate thickness (right hemisphere) from
> freesurfer's parcellation. Then I compare these volumes and thickness
> across two groups using R and found significant differences in these
> measurements. Do I have to correct for multiple comparisons?
>
> If yes, how do I do that? Does this make sense to divide the p-value/4
> and if the p-value < p-value/4 then the test is Bonferroni corrected?
> If no, what do I say in my results that the test statistic is not
> inflated?
>
> Thanks
>
> Regards
>
> --VM
>
>
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