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Re: st: use of fracpoly with Proportional Odds model?


From   Richard Williams <Richard.A.Williams.5@ND.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: use of fracpoly with Proportional Odds model?
Date   Wed, 05 Jul 2006 07:42:01 -0500

At 06:12 AM 7/5/2006, Stephan Rudolfer wrote:
I am fitting PO models to ordinal categorical data, and wish to apply fractional polynomials to the continuous covariates. However, fracpoly does not allow ologit as the regression command.

Is there a work-around? Or some other way of achieving my aim?

Many thanks in advance for any assistance with this.
--
The list of "blessed" programs is contained in

frac_chk.ado

I don't know why ologit is not on the list, e.g. is it sound statistical practice to exclude it or did nobody ever get around to programming it? I also don't know what good or bad things would happen if you created a modified program where ologit was among the blessed, but I suppose you could try it. Just don't zap the originals.


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Richard Williams, Notre Dame Dept of Sociology
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