Sorry to mislead you--only one x var is allowed by -locpoly-, and
-kernreg-, too. In principle, there is nothing to stop you building
your own kernel regression command that will do any kind of regression
model at each point (i.e. putting more variables on the RHS). But I'm
surprised -locpoly- can't handle it--perhaps one of its authors will
explain--maybe the C code in the plugin is not conducive to additional
x vars? You can write your own .ado file, but it will much much
slower than locpoly could have been...
On 12/18/05, austin nichols <[email protected]> wrote:
> findit locpoly
>
> On 12/18/05, Tinna <[email protected]> wrote:
> > Dear Statalisters,
> >
> > Is it possible to use control variables in a locally smoothed
> > (nonparametric) regression?
> >
> > Tinna
> >
> > P.S. my command looks like this.
> > lowess healthdummy lowessequiv1000, bwidth(0.6) ytitle(Probability of
> > Being in Good Health) xtitle(Income (Simulated and Adjusted for Family
> > Size)) title(Lowess Smoothed Regression of Income on Probabiltiy of
> > Good Health) by(male)
> >
> > *
> > * 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/
