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2008 Jun 07
1
variance components models with zero estimates
When a variance components mixed model is run in Stata, if some of the variance components are zero, the model may not converge, for rational reasons. However, when the same model is run in SAS, the models with variance components that estimate to zero nonetheless converge. If I'm interested in looping through a set of such models, the SAS behavior is preferred. However, in Stata