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st: boostrap CI for intraclass correlation coefficient


From   Eddy Fan <eddy.fan@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: boostrap CI for intraclass correlation coefficient
Date   Thu, 17 Apr 2008 10:23:23 -0400

Hello,

I have estimated the ICC in strength measurements between raters on a  
serious of patients by using xtmixed (for the variance components) in  
the following way:

xtmixed d_strength || rater_id:

Then I get estimates of the variances and their standard errors.  I  
then calculated ICC as the proportion of total variance that occurs  
between raters.  How do I bootstrap to get 95% confidence intervals  
for the calculated ICC?

Thanks.

Eddy


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