Re: [Freesurfer] longitudinal study in counterbalance design

In terms of just giving it a name, it should not matter since all of the time points are treated equally in the longitudinal stream. When you go to analyze it, the order will make a difference (and I assume you'll use phase). doug

On 05/07/2012 11:59 PM, lordowen wrote:

Hi all:

We performed a thickness change study which related to the menstrual cycle. We scanned subjects during different menstrual phases in a counterbalance manner. Thus when we conduct a longitudinal analysis, we need to set time point according to the actual scanning order (i.e., 1st scan as Tp1 and so on) or according to the phase (i.e., menstruation phase as Tp1 and other phase as TpN)?

Thanks for your suggestion.