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st: sample size estimation for kappa and power


From   Shiva Ghimire <sghimire@ovc.uoguelph.ca>
To   statalist@hsphsun2.harvard.edu
Subject   st: sample size estimation for kappa and power
Date   Mon, 09 Jun 2003 15:04:46 -0400

I calculated the sample size required for a kappa test (to compare the
performance of a new lab test against the old one) in STATA using the
command "sskdlg". I realized however that the program does not allow me
to input the statistical power on which to base the sample size
estimation. As I am  testing the same samples by two test methods
(unlike two proportion comparison where samples come from different
populations), I am wondering whether I should not be worrying about
statistical power at all. Could someone please suggest.

Thanks in advance

Shiva Ghimire
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