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2009 May 22
1
Forcing a variableinto a model using stepAIC
Dear All,
I am attempting to use forward and/or backward selection to determine
the best model for the variables I have. Unfortunately, because I am
dealing with patients and every patient is receiving treatment I need
to force the variable for treatment into the model. Is there a way to
do this using R? (Additionally, the model is stratified by
randomisation period). I know that SAS can be