--- "francesca.modena" <[email protected]> wrote:
> I run a zero inflated poisson model. The sample is 409 observations,
> with 87 nonzero observations and 322 zero observations. There are 42
> independent variables. <snip> Can you suggest me if 42 parameters are
> too many for my sample?
Nick already answered that Stata will tell you if it is completely
impossible to estimate this model. However, even if Stata gives you
output I would still be very nervous about such a model with this data.
Do you really need all 42 variables?
-- Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
___________________________________________________________
Support the World Aids Awareness campaign this month with Yahoo! For Good http://uk.promotions.yahoo.com/forgood/
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/