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st: Problems with ci_marg_mu and ordinal variable


From   "Lilli Banholzer" <Lilli.Banholzer@uni-konstanz.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Problems with ci_marg_mu and ordinal variable
Date   Wed, 18 Jan 2012 17:03:51 +0100

Dear all, 

I am trying to get confidence intervals for my multilevel model, using gllamm, gllapred and finally  the "ci_marg_mu" command.

My model is: 
gllamm demobilize  length_stay education econ_stabilty, i( region_birth_n) link(ologit) adapt eform 

I then use gllapred with the "marginal" und "mu" option to obtain predicted probabilities. Since I am using an ordinal dependent variable, I also specify the "above ()" option. 

gllapred prob0, marginal mu above(0)
gllapred prob1, marginal mu above(1)

And here is where I get stuck. When I try to get the prediction intervals with the "ci_marg_mu" command, STATA tells me: 

ci_marg_mu lower upper
"must specify above() option for ordinal responses"

However, apparently the "above" option is no allowed with the ci_marg_mu command as stata tells me: 

ci_marg_mu lower0 upper0, above(0)
option above() not allowed

What am I doing wrong? How can I specify the above option? I am using Stata 11 for Mac.

Thank you very much for any advice!

Best regards,

Lilli Banholzer
 
 
 
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