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From |
Wameq Raza <wameq.r@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Outreg for asclogit |

Date |
Wed, 3 Oct 2012 11:31:09 +0200 |

Hi John, Thank you yet again for coming through! I'll give this a shot and let you know how it goes. Best Wameq On Wed, Oct 3, 2012 at 6:39 AM, John Luke Gallup <jlgallup@pdx.edu> wrote: > Wameq, > > -outreg- (and probably -outreg2- and -estout-) don't handle marginal effects after -asclogit- because the results are saved in a very non-standard format. > > -estat mfx-, which is only for use after -asclogit- saves the marginal effects in r() matrices named after the logit categories. > > Things you can't do in -outreg- you can still do with a bit of work with -frmttable-, which is the formatting engine distributed with -outreg-. > > The following code creates an -outreg- compatible table (which can be merged, etc.) showing the marginal effects with t-statistics below them and asterisks for significance. > > First I calculate the marginal effects: > > webuse choice, clear > asclogit choice dealer, case(id) alternatives(car) casevars(sex income) > estat mfx, at(sex=0 dealer=1) > > Then I create a Stata matrix holding the marginal effects and t-stats (`b') and an indicator matrix for where the stars go (`stars', using the mata command). These are passed to -frmttable- to create a Word table (or TeX table) with the results. > > tempname b stars > loc ctitl `""","""' > forvalues i = 1/`e(k_alt)' { > tempname b`i' > mat `b`i'' = r(`e(alt`i')') > mat `b' = (nullmat(`b'), `b`i''[.,1..1], `b`i''[.,3..3]) > mat `stars' = (nullmat(`stars'), `b`i''[.,4..4]) > loc ctitl `"`ctitl' ,`e(alt`i')'"' > } > mata: st_matrix("`stars'", (abs(st_matrix("`stars'")):<0.05) + /// > (abs(st_matrix("`stars'")):<0.01)) > frmttable using ascmfx, statmat(`b') substat(1) /// > annotate(`stars') asymbol("*","**") ctitle(`ctitl') /// > replace note("* p<0.05; ** p<0.01") > > You could adapt this to report standard errors, p-values, or change the stars, etc. if you want. > Here's the table: > > --------------------------------------------------- > American Japan Europe > --------------------------------------------------- > dealer American 0.02* -0.01 -0.00 > (2.29)* (-2.34) (-1.66) > Japan -0.01* 0.02 -0.00 > (-2.34) (1.83) (-1.03) > Europe -0.00 -0.00 0.01 > (-1.66) (-1.03) (1.30) > casevars sex* 0.03 -0.16 0.13 > (0.38)* (-2.03) (1.76) > income -0.01** 0.01 0.00 > (-2.95) (1.96) (1.14) > --------------------------------------------------- > * p<0.05; ** p<0.01 > > > John > > > On Oct 2, 2012, at 1:38 PM, Wameq Raza <wameq.r@gmail.com> wrote: > >> Hi everyone, >> I was wondering if anyone could kindly tell me if there's a way to get >> the marginal effects of a asclogit model that I'm running >> into a table using outreg. >> More specifically, I'm generating the marginal effects using: estat >> mfx, var (variables); i'm doing this for both alt specific and >> case specific vars. >> Any help would be much appreciated! >> Best >> Wameq >> >> -- >> W A M E Q R A Z A >> * >> * For searches and help try: >> * http://www.stata.com/help.cgi?search >> * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ > * http://www.ats.ucla.edu/stat/stata/ -- W A M E Q R A Z A * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Outreg for asclogit***From:*Wameq Raza <wameq.r@gmail.com>

**Re: st: Outreg for asclogit***From:*John Luke Gallup <jlgallup@pdx.edu>

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