random effects specification

[sorry for the line wrap mangling]

On Tue, 8 Apr 2008 21:47:04 +0200,

[...]

You can reconstruct the table of means from the coefficients: A B a :
intercept intercept + communityB b: intercept + treatmentb intercept +
treatmentb + communityB + communityB:treatmentb c: intercept +
treatmentc intercept + treatmentc + communityB + communityB:treatmentc
d: intercept + treatmentd intercept + treatmentd + communityB +
communityB:treatmentd

Yes, but IIUC, this is not necessarily equivalent to fitting separate
models with subsets of the terms/levels.  Correct me if I'm wrong, but I
think the estimates will differ when the design is unbalanced (e.g. some
subjects not receiving all treatments) because a straight calculation
from the full model assumes the coefficients have equal weight.  For
this example data, the design is balanced, so this might not be a
problem.

Thanks,

Seb