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st: nested clusters with svy command


From   Ana Gabriela Guerrero Serdan <ag_guerreroserdan@yahoo.com>
To   stata listserve <statalist@hsphsun2.harvard.edu>
Subject   st: nested clusters with svy command
Date   Thu, 25 Jun 2009 01:05:02 -0700 (PDT)

Hi, 

I am doing some regressions and need to correct my standard errors for any possible clustering effects (municipalities, districts). 

Reading Austin's presentation  (http://repec.org/usug2007/crse.pdf), it says that I can use svy commands in stata. I have tried the following and I get: 

svyset goverurban || clusternum
Note: stage 1 is sampled with replacement; all further stages will be ignored

      pweight: <none>
          VCE: linearized
  Single unit: missing
     Strata 1: <one>
         SU 1: goverurban
        FPC 1: <zero>

Which means Stata ignores the second clustering effects (clusternum: districts)? 

Has anyone had a different outcome? So it is not possible to correct for nested clusters? 


thanks, 
Gaby 




      
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