31 Oct
2009
31 Oct
'09
1:47 p.m.
Hi Folks,
If am comparing the mean thickness for certain gyri (pre-central, post-central) in a controls versus patients. I obtain the thickness measurements from lh.aparc.a2009s.stats and rh.aparc.a2009s.stats I was wondering if I need to normalize these thickness measurement with the estimated total intracranial volume (eTIV) ?
Or has anyone reported that the these are independent of eTIV ? If so then as I understand I would only need to account for age and gender in any subsequent analysis using GLM.
Thanks Mehul