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st: problem in ICE for multiple imputation


From   tang5@purdue.edu
To   statalist@hsphsun2.harvard.edu
Subject   st: problem in ICE for multiple imputation
Date   Wed, 11 Jul 2007 23:52:01 -0400

Hi everyone, 
I am new in using ICE program. A survey dataset has four variables q098 
q099_2, q100 and 130 with a heavy amount of missing values for each of them. 
I ran the ice command and get the following message: 

"I detected a problem with running uvis with command mlogit on response q098
and covariates q099_2 q100 q130.

The offending command resembled:
uvis mlogit q098 q099_2 q100 q130 ,   

With mlogit, try combining categories of q098, or if appropriate, use ologit

unrecognized command
r(199);"

Then I use the option cmd(q098:ologit) since that variable could be an ordinal 
variable. I got the following message:
"I detected a problem with running uvis with command ologit on response q098
and covariates q099_2 q100 q130.

The offending command resembled:
uvis ologit q098 q099_2 q100 q130 ,   

unrecognized command"

Could anybody help me about this?
thanks a lot
Min tang


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