External Email - Use Caution Dear Eugenio,
Thank you for your quick response. Sorry but I am not completely sure if I understood correctly your response. What do you mean with "demeaning" the eTIV first?. If I understood, a good choice would be to correct the subic_volume before perform the regression using the folliwng formula: subic_vol = average_eTIV_allsample * subic_vol / eTIV_subject Thank you. Best, Steve. El mié., 22 abr. 2020 a las 17:35, Steve Petersen (<marfne...@gmail.com>) escribió: > Dear Freesurfer experts, > > I would like to perform a correlation between the volume of subiculum and > some behavioural measures. Before making that correlation, is it necessary > to correct the subiculum volume with the eTIV? I have thought of doing it > by scaling the subiculum volume as follows: > > > *subic_vol = mean_eTIV_group * subic_vol / eTIV_subject * Is > correct?? > > mean_eTIV_group = eTIV average of the group to which the subject belongs. > > Thanks in advance. > > Best regards, > > Steve. >
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