Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


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

st: ztnb model


From   sara balestri <sara.balestri@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: ztnb model
Date   Thu, 27 Oct 2011 18:54:52 +0200

Dear Stata users,

I'm running a ztnb model on a sample of count data which, by
construction, excludes the possibility of zero counts. Overdispersion
detected in the data.
I have few questions:
1) does exist a nbvargr equivalent command to be applied for nb and
ztnb comparison?
2) my count data do not include zero counts and observations start
with a minum value of 25 for the dependent variable (by definition of
the event analysed) . I'm wondering if a ztnb is the most appropriate
model and/or if it is possible to fix the truncation at that value.
Any suggestion?


thanks

Sara Balestri

PhD candidate
Political Science Faculty
Catholic University of Sacred Heart
Milan (Italy)
*
*   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   |   Site index