The absence of stepwise methods works to your advantage, as these
yield invalid statistical inference and inflated regression
coefficients.
Frank E Harrell Jr Professor and Chairman School of Medicine
Department of Biostatistics Vanderbilt University
On Thu, 2 Sep 2010, 黃敏慈 wrote:
Hi ,
I use library(gee),library(geepack),library(yags) perform GEE data analysis
, but all of them cannot do variable selection!
Both step and stepAIC can do variable selection based on AIC criterion under
linear regression and glm,
but they cannot work when model is based on GEE.
I want to ask whether any variable selection function or package under GEE
model avaliable now?
Thanks!
Best,
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