Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: Computing interaction effects after svy:heckman


From   "Joao Ricardo F. Lima" <jricardofl@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Computing interaction effects after svy:heckman
Date   Tue, 12 Aug 2008 12:22:01 -0300

Dear Statalisters,

I'm using the heckman procedure with survey data. I have an
interaction term (yearsstudy_placelive) that is a product of a
continuous variable and a dummy variable. My model is

*****************
svy linearized: heckman lnincome age age2 years_study place_live
yearsstudy_placelive, select (ocup = age age age2 years_study
place_live yearsstudy_placelive race region) log
****************

where place_live is a dummy (0=rural; 1=urban)

Iīm using margeff, because itīs easy to calculate the total effect of
age. However, I actually donīt known how to calculate the effect of
the interaction term in the regression model. I only can use inteff
after probit or logit.

Then, I really appreciate an advice of how I can calculate this effect.

Thanks a lot,

Joao Lima
-- 
-------------------------------
Joao Ricardo Lima
Professor
UFPB-CCA-DCFS
+553138923914
-------------------------------

*
*   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/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index