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Hi,

I am looking for references or suggestions on how to analyse predicted 
values (e.g. as if they were observed ones) in a mixed model. I have 
individual growth curves providing predicted values of weight for a 
given age and I would like to analyse those predicted values in a 
mixed model, considering their prediction errors. Those prediction 
errors are specific to each individual. 

Some methods such as random regressions and repeated measures 
analysis with different covariance struture were considered, but 
didn't worked properly because either of the data structure or the 
complexity of the mixed model (I am using SAS - I know there are 
packages that would be OK for the job, probably ASREML). 

A suggestion is to use weighted analysis, but it seems that the 
weighting variable is more complicated to calculate than just taking 
the inverse of the prediction error.

Thanks,

Jo�l Rivest

Apology for my english writing.

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