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st: RE: Sample size for estimating negative predictive value and sensitivity


From   "MacLennan, Graeme" <g.maclennan@abdn.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Sample size for estimating negative predictive value and sensitivity
Date   Mon, 5 Sep 2011 08:29:17 +0100

Jayson asks:

I am working on a research to compare the diagnostic accuracy of two qualitative (binary) diagnostic methods. How do you compute for the minimum required sample size for determining the sensitivity and negative predictive values of these two diagnostic methods using Stata?


I suggest reading Obuchowski NA: 1998, Sample size calculations in studies of test accuracy. Stat Methods Med Res 7:371-392 as a starting point.
HTH.
Graeme.


The University of Aberdeen is a charity registered in Scotland, No SC013683.

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