## FDA group model in R [Two-Stage / GS Designs]

Hi all,

be careful:

?lm

"The terms in the formula will be re-ordered so that main effects come first, followed by the interactions, all second-order, all third-order and so on".

So don't compare directly with any sequential anova from software that doesn't do exactly that.

I could be wrong, but...

Best regards,
ElMaestro

"Pass or fail" (D. Potvin et al., 2008)