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st: gllamm ordered probit models
From
Lisa Marie Yarnell <[email protected]>
To
[email protected]
Subject
st: gllamm ordered probit models
Date
Sat, 28 May 2011 13:14:47 -0700 (PDT)
Hello! I have run ordered probit models in the past using svy: oprobit. Those have worked great for me. But now, I am trying to run ordered probit models using gllamm so that I can nest persons within schools (scid), and I am stumped. Even in a very basic model (below), I receive error messages. Do I need to specify the number of random effects, which I have seen on help pages indicated as "eqs(var1 var2 var3)" in the code? I would like for someone to help me understand what I'm doing wrong in my modeling, so I can get these analyses to run. Thank you!
. gllamm overwt_notdep boy w1_yrs, i(scid) family(gaussian) link(oprobit) eform pweight(wt)
could not calculate numerical derivatives
flat or discontinuous region encountered
(error occurred in ML computation)
(use trace option and check correctness of initial model)
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