Is there a function in R which performs stepwise estimation in ways similar
to SAS/STATA (i.e., allows the analyst to specify the significance levels
for removal/addition of terms).

 

I've been asked to evaluate two final models:  one resulting from a
backwards selection in R (stepAIC) and one resulting from a backwards
selection using PROC LOGISTIC in SAS.  The final terms are slightly
different and I'm trying to understand the differences between the two
packages (approaches) so I can explain why the final terms might be
different.

 

Thanks for your help.

 

Marc

 

Marc W. Zodet, MS

Health Statistician

Agency for Healthcare Research and Quality

E-mail:  <mailto:mzodet@ahrq.gov> mzodet@ahrq.gov

 

 


	[[alternative HTML version deleted]]


