Bookmark and Share

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


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

st: -probit- does not converge, but does -dprobit-


From   Duha Altindag <[email protected]>
To   statalist <[email protected]>
Subject   st: -probit- does not converge, but does -dprobit-
Date   Wed, 2 Feb 2011 10:34:11 -0600

Hi Statalisters:

I am using version 11.1. I have two data sets: old.dta and new.dta.
They are almost identical, but new.dta has more observations. That is,
old.dta is a subset of new.dta.

Sometime ago, with an earlier version of Stata I had used old.dta and
run -probit- and -dprobit-. That time, I could get marginal effects
using both -probit- and -dprobit-.

Now, I use new.dta and run -probit- : it doesn't converge.
Then I use run -dprobit- : it does converge and gives me marginal effects.

Then I experiment with old.dta and Stata 11.1. I get the same thing:
-probit- does not converge, but -dprobit- does.

Previously, someone complained about a similar issue and he was
advised to contact Stata Support.
http://www.stata.com/statalist/archive/2010-08/msg01331.html


Is there an update on the issue? Would you advise me to contact the
Support as well? Or does someone have a quick advice?

I know -dprobit- is not an official command anymore. But does it mean
its results cannot be trusted? Should I trust -probit- or -dprobit-?

Thanks for reading my question.

Duha
*
*   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 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index