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st: RE: [Cox model]

From   "Nick Cox" <>
To   <>
Subject   st: RE: [Cox model]
Date   Thu, 19 Jun 2003 00:00:17 +0100

roger webb
> I need to run a Cox model on a very large cohort (of approximately
> 1.5 million subjects). Has anyone implemented a memory efficient
> routine that uses a sample from (as opposed to all) the individuals
> at risk?

Nothing to do with me, but I doubt that there 
is amy special procedure needed here. That is,
you just should take a sample upstream and then 
fit a Cox model on the sample data, I guess. 


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