You are correct. -collin- takes no
account of any -svy- details.
Nick
[email protected]
anju parthan
> Thanks for your input. I still have a question. Does
> the command collin incorporate strata, psu and
> pweight?
>
> I ran the svyreg and collin as you suggested. But
> when I ran svyreg for each of the independent
> variables to calculate the VIF manually, the VIF
> values are slightly different than the output from
> collin.
> So it looks like collin does not take into account
> strata, psu, and pweights. Am I right?
Clive Nicholas <[email protected]>
> > Anju Parthan wrote:
> >
> > > I have complex survey data. I am trying to run vif
> > > after svyregress, but I get this error message
> > >
> > > . vif
> > > last estimates not found
> > > r(301);
> > >
> > > How can I calculate vif with svyregress?
> >
> > Easy. Download Phil Ender's -collin- package from
> > SSC.
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
