Hi,
I am having problem with NLOGITRUM.
This the the command I am using to run the model:
nlogitgen branch = alt(package:1|2, nopack:3)
nlogittree alt branch
nlogitrum pref nurse nsq na2 na3 n_nt1st n_highedu homevis visitsq va2 va3
hv_nt1st hv_highedu nhv homehelp helpsq cost c_highinc, group(indid)
nests(alt branch)
The first two command ran fine, however the last command result in an
error message which is written as follow:
could not calculate numerical derivatives
flat or discontinuous region encountered
Can you assist me as to how to fix this model?
Thank you in advance,
Flora
[email protected]
*
* 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/
