Hi Zheng
yes, I see. Maybe the effect is smaller than you have the power to see, or there is no effect? You would need to give us more details for us to help. Are you correcting for eTIV? What measure are you comparing?
cheers Bruce On Sun, 19 Nov 2017, 郑凤莲 wrote:
Hi Bruce,
I am sorry for this situation. In the first way, there was an statistical difference in left hippocampus, but no difference in right hippocampus. In the second way, there was both no statistical difference in left or right hippocampus. I don't know what causes this result. Can you understand me this time?
Thanks, Zheng
At 2017-11-18 22:58:56, "Bruce Fischl" fischl@nmr.mgh.harvard.edu wrote:
Hi Zheng
no difference between what and what?
cheers Bruce On Fri, 17 Nov 2017, 郑凤莲 wrote:
Hi professor,
I am using Freesurfer for DTI data. When I run 'mri_segstats', I got the result that there w
as
an obvious difference in left hippocampus, but no difference in right hippocampus. Then, I run segmentation of hippocampus subfields. The result showed there is no difference in total left or right hippocampus, and only in two right hippocampus subfields has significant difference. Why is there inconsistent result in two means? Thank you very much.
Sincerely, Zheng