Hello SR Millis,
is significant colliearity now rulled out? regarding my initial
question, do i include the dp in the factor analysis equation or how
do i interprete the result of only four factors being found?
thank you once again,
george
On 8/13/07, SR Millis <[email protected]> wrote:
> Having ruled out significant colliearity, I should
> also mention that Harrell (2001) provides some useful
> guidelines for variable selection:
>
> 1. Use the literature to eliminate unimportant
> variables.
>
> 2. Eliminate variables having narrow distributions.
>
> 3. Eliminate variable having a lot of missing data.
>
> 4. Consider a type of oblique-rotation principal
> components analysis.
>
> SR Millis
>
> Harrell, F. (2001). Regression modeling strategies:
> With applications to linear models, logistic
> regression, and survival analysis. New York:
> Springer-Verlag.
>
>
>
> --- SR Millis <[email protected]> wrote:
>
> > Thanks, George. Regarding collinearity, what was the
> > highest condition index? And, for any condition
> > index
> > greater than 30, were there any large
> > variance-decomposition proportions (ie, greater than
> > .5)?
> >
> > SR Millis
> >
> >
> > --- georg wernicke <[email protected]>
> > wrote:
> >
> > > hello,
> > >
> > > my sample size are 874 observation. i used the
> > > comand collin and
> > > coldiag2 for diagnostics. all the vifs were way
> > > below 10, the highest
> > > was 6.5.
> > >
> > > thanks again,
> > >
> > > georg
> >
> >
> > Scott R Millis, PhD, MEd, ABPP (CN,CL,RP), CStat
> > Professor & Director of Research
> > Dept of Physical Medicine & Rehabilitation
> > Wayne State University School of Medicine
> > 261 Mack Blvd
> > Detroit, MI 48201
> > Email: [email protected]
> > Tel: 313-993-8085
> > Fax: 313-966-7682
> > *
> > * 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/
> >
>
>
> Scott R Millis, PhD, MEd, ABPP (CN,CL,RP), CStat
> Professor & Director of Research
> Dept of Physical Medicine & Rehabilitation
> Wayne State University School of Medicine
> 261 Mack Blvd
> Detroit, MI 48201
> Email: [email protected]
> Tel: 313-993-8085
> Fax: 313-966-7682
> *
> * 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/
>
*
* 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/
