best fit model analysis

Submitted by Ham on

Dear dpabiers, 

Could please recommend me the best approach with the next pilot study..

It's a prepost treatment study, with 2 time points (pre&post) but I've a huge lack of power due to size group ( 3 groups, 5 sujbects each)... 

so, I do not know if I can perform an ANCOVA Repeated measures and introduce the 3 groups or go further and apply a flexible factorial or GLM_Flex scripts...

Another approach, which it could be less conservative,,, is apply paired t-tests for pre&post group and for between group comparisons perform simple 2tests...