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From |
Maarten buis <maartenbuis@yahoo.co.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Re: Calculate beta values for mim results |

Date |
Mon, 4 May 2009 09:12:14 +0000 (GMT) |

Looks ok, one way to test this is that the constant should be very very small (actually 0, but usually in the order of 1E-16. Hope this helps, Maarten ----------------------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://home.fsw.vu.nl/m.buis/ ----------------------------------------- --- On Sun, 3/5/09, Frank Gallo <fjgallo@mac.com> wrote: > From: Frank Gallo <fjgallo@mac.com> > Subject: Re: st: Re: Calculate beta values for mim results > To: statalist@hsphsun2.harvard.edu > Date: Sunday, 3 May, 2009, 11:40 PM > <> > <> > > Hi Maarten, > > I just wanted to check-in with you on my below message, > which might have been lost in the shuffle of trying to > correct my posting dilemma. Did I carryout the below syntax > correctly based on your suggestion? Thank you. > > Best, > Frank > > > On May 2, 2009, at 10:04 AM, fjgallo@mac.com wrote: > > Hi Maarten, > > First, I opened the data file in which I saved the stacked > imputed data sets: m(5), each set n = 3,300. Next, I ran the > below syntax (for my below example, I only included a few > predictor variables and the criterion variable pforce). I > obtained coefficients for the run. Did I do this correctly? > Please remember that I am a Stata beginner. Thank you. > > Best Frank > > ---------------------------------------------------------- > mim, storebv: regress pforce assign time day > > foreach var of varlist pforce assign time day { > gen double z`var' =. > } > > forvalues i = 1/5 { > foreach var of varlist pforce assign time day { > sum `var' if _mj ==`i' > replace z `var' = (`var' - r(mean)) / r(sd) if _mj > == `i' > } > } > > mim: regress zpforce zassign ztime zday > > ------------------------------------------------------------- > > > > > > On May 1, 2009, at 12:04 PM, Maarten buis wrote: > > > This is one way of getting standardized coefficients after > multiple imputation: > > *------------------- begin example > ---------------------------- > sysuse auto, clear > ice rep78 price mpg, m(5) clear > > foreach var of varlist rep78 price mpg { > gen double z`var' = . > } > > forvalues i = 1/5 { > foreach var of varlist rep78 price mpg { > sum `var' if _mj == `i' > replace z`var' = (`var' - r(mean)) / r(sd) if _mj > == `i' > } > } > > mim : reg zprice zrep78 zmpg > *--------------------- end example > --------------------------------- > > Hope this helps, > Maarten > > ----------------------------------------- > Maarten L. Buis > Institut fuer Soziologie > Universitaet Tuebingen > Wilhelmstrasse 36 > 72074 Tuebingen > Germany > > http://home.fsw.vu.nl/m.buis/ > ----------------------------------------- > > > --- On Fri, 1/5/09, fjgallo@mac.com <fjgallo@mac.com> > wrote: > > > From: fjgallo@mac.com <fjgallo@mac.com> > > Subject: Re: st: Re: Calculate beta values for mim > results > > To: statalist@hsphsun2.harvard.edu > > Date: Friday, 1 May, 2009, 4:16 PM > > Thank you. Your thoughts were helpful, and I also hope > that > > an experienced person with the -mim- command might > offer > > some insight. > > > > Best, > > Frank > > > > On May 1, 2009, at 11:01 AM, Martin Weiss wrote: > > > > <> > > > > You can find a general recipe for recovering the beta > > coefficients here: > > > http://www.stata.com/statalist/archive/2009-03/msg00154.html > > > > As I have never used -mim-, I am highly reluctant to > > endorse any calculation in connection with it. AFAIK, > P. > > Royston, its author, does not post to the list > regularly, so > > he is unlikely to comment, either. But there are > probably > > more experienced listers who can step in... > > > > Note that my -mata- code was way too complicated as > you > > have now revealed that you are a beginner. Sorry about > > that... > > > > HTH > > Martin > > _______________________ > > * > > * For searches and help try: > > * http://www.stata.com/help.cgi?search > > * http://www.stata.com/support/statalist/faq > > * http://www.ats.ucla.edu/stat/stata/ > > > > * > > * For searches and help try: > > * http://www.stata.com/help.cgi?search > > * http://www.stata.com/support/statalist/faq > > * http://www.ats.ucla.edu/stat/stata/ > > > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Re: Calculate beta values for mim results***From:*Frank Gallo <fjgallo@mac.com>

**References**:**Re: st: Re: Calculate beta values for mim results***From:*Frank Gallo <fjgallo@mac.com>

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