R help - Sep 2010 - Is there any package or function perform stepwise variable selection under GEE method?

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,

	[[alternative HTML version deleted]]

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, ??? 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,
>
> 	[[alternative HTML version deleted]]
>
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