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st: RE: Multilevel models with plausible values as dependent variable


From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   st: RE: Multilevel models with plausible values as dependent variable
Date   Fri, 29 May 2009 15:04:30 +0100

Stata, strict sense, does not have a -pv- command. That is a
user-written program from SSC. Please remember to spell out such
details, as requested in the FAQ. 

You do not specify precisely what you typed -- another request in the
FAQ -- but as I understand it -xtmixed- does not support weights, as its
help implies, which I presume is why you got this error message. That
is, if weights are allowed by a command that is always specified by its
help, but not otherwise. 

Your main road ahead might be to get a unweighted dataset. How difficult
that would be depends partly on what kind of weights you have, which you
do not indicate. If they are frequency weights, you might be able to
-expand- the dataset, although even then memory problems might bite. 

Nick 
[email protected] 

Nailing Xia

I am estimating a multilevel model using command -xtmixed-. The
dependent variable is measured with plausible values and Stata has the
command -pv- that handles such situation. However, -pv- does not seem
to work with -xtmixed-, it gives me error message "weights not
allowed". Does anyone know why I am getting this error message, or
other Stata command that handles plausible values with multilevel
models? I appreciate your help!

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