Dear Diana,
I'm not sure that I entirely understand your question, but the vif() function in the car package should work, I think, with objects produced by svyglm(), since the latter inherit from "lm" and since the vif.lm() method works from the covariance matrix of the coefficients.
I hope this helps,
John
------------------------------------------------
John Fox
Sen. William McMaster Prof. of Social Statistics
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
http://socserv.mcmaster.ca/jfox/On Thu, 28 Jun 2012 12:28:54 -0500
Diana Marcela Martinez Ruiz <
[hidden email]> wrote:
>
> Hello,
>
> Seeking a way to get the variance inflation factor VIF for a model of regression in complex survey, I have understood that without this package (SURVEY) RGui VIF obtained as follows:
>
> fit <- lm(mpg~disp+hp+wt+drat, data=mtcars)
>
> vif(fit)
>
> But I want to know if survey, Vif is obtained so
>
> vif( svyglm(api00~ell+meals+mobility, design=dstrat))
>
> Thank you, happy day
>
> [[alternative HTML version deleted]]
>
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https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide
http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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