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st: kappa and bootstrap


From   Garry Anderson <g.anderson@unimelb.edu.au>
To   statalist@hsphsun2.harvard.edu
Subject   st: kappa and bootstrap
Date   Fri, 12 Oct 2007 08:12:50 +1000

Dear Statalist,
 
I am calculating kappa over six clusters, which range in sample size from 30 to 150.
I wish to adjust the 95% confidence intervals for possible lack of independence of observations.
The clusters could be patients within medical clinics.
 
I was enquiring which of either the cluster option or the strata option of the bootstrap command would be appropriate.
 
The options are
 
bootstrap k=r(kappa) , cluster(clinic) rep(1000) : kap a b
or
bootstrap k=r(kappa) , strata(clinic) rep(1000) : kap a b
 
Kind regards, Garry
 
 



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