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From |
John Luke Gallup <jlgallup@pdx.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Outreg for asclogit |

Date |
Tue, 2 Oct 2012 21:39:51 -0700 |

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/

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

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

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

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

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