Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
From | Ebru Ozturk <ebru_0512@hotmail.com> |
To | <statalist@hsphsun2.harvard.edu> |
Subject | RE: st: Tobit interaction effect |
Date | Wed, 9 May 2012 18:58:50 +0300 |
I'm not interested in latent variable. So for the rest, what should I do? or Where can I learn to measure the interactions? Thanks, Ebru ---------------------------------------- > Date: Wed, 9 May 2012 12:32:17 +0200 > Subject: Re: st: Tobit interaction effect > From: maartenlbuis@gmail.com > To: statalist@hsphsun2.harvard.edu > > On Wed, May 9, 2012 at 12:09 PM, Ebru Ozturk wrote: > > But, it has been discussed that there is no Stata code for estimating interaction effects in Tobit by Norton, Wang & Ai, 2004. So, how can we just add them and interpret the results? > > They were wrong, as long as you interpret your results in terms of the > latent outcome. This is what I meant when I said: > > "The resulting model is easy to interpret in terms of the expected > latent variable, but gets a lot more complicated for other outcomes > like the probability of being censored, or the expected outcome > conditional on not being censored." > > The logic is that a Tobit model is just a linear model terms of the > latent variable, so none of the problems discussed by Norton and > colleagues apply to that interpretation of the Tobit model. It is > non-linear in terms of the probability of being censored or the > expected outcome condition on not being censored, etc. If those are > the outcomes of interest you will have to do more work. > > -- Maarten > > -------------------------- > Maarten L. Buis > Institut fuer Soziologie > Universitaet Tuebingen > Wilhelmstrasse 36 > 72074 Tuebingen > Germany > > > http://www.maartenbuis.nl > -------------------------- > * > * 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/