Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Marginal Effects using subsetted data

From   "MOSTARDO, NICK" <[email protected]>
To   <[email protected]>
Subject   st: Marginal Effects using subsetted data
Date   Sun, 31 Oct 2010 15:54:09 -0400


I am running an ordered probit model using data that I wish to subset by
gender and race (both dichotomous measures). I am running the following

'by gender race, sort: ologit depvar indvars'

At that point, I get the correct output of 4 tables for the proper
combinations of the sorted variables (0,0)(0,1)(1,0)(1,1); however, when
I try to run marginal effects as:

'mfx, predict(p outcome(1))' (my depvar is 3 ordered categories)

I get the error:

'no observations

I know whatever I am doing wrong is probably something minute, but I
have not been able to lock it down. Is there are way to get STATA to
output marginal effects tables that correspond to the four oprobit
coefficient tables outputted earlier using the "by" command? I have
tried using the 'mfx' command with the 'by' command, but that seems to
give an error:

'mfx may not be combined with by'

Any help would be greatly appreciated.


Nicholas A. Mostardo
Graduate Student
Department of Political Science
304B Gambrell Hall
University of South Carolina
Columbia, SC 29208
630-267-5352 (phone)
803-777-8255 (fax)

*   For searches and help try:

© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index