Proc Mixed FA0(1) for partial replicate [RSABE / ABEL]

posted by ElMaestro  – Denmark, 2013-08-06 12:34 (4350 d 17:09 ago) – Posting: # 11222
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Hi Wolfgang,

❝ With this notation, the remedy would formally be equivalent to setting q=1 - but this is more difficult to justify, and also I would not know how to specify it in SAS.

❝ So I guess we have to stick to FA0(1) and the corresponding notation.


If I recall correctly, and mind you I could be completely wrong, you can omit the consideration of correlated random effects and still get the right estimates of the s2w,r, s2b,r and compound sum for test.
Effectively, in my naïve notation where I would write q=rsb,r sb,t it would correspond to setting r=0; then the restricted max likelihood of the optimised V matrix changes, but the determination of s2w,r and s2b,r (and s2w,t+s2b,t, where applicable) do not.
This might still be in line with the random effects model, if I get Chow & Liu right. After all, the model does not rely on correlated random effects but justs allows to calculate correlations if we find it appropriate.

Not a statistician and not a SAS user so don't know any syntax that fits anything.

Pass or fail!
ElMaestro

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