[R] Log rank test power calculations

From: Daniel Brewer <daniel.brewer_at_icr.ac.uk>
Date: Thu, 31 Jan 2008 15:53:23 +0000


Does anyone have any ideas how I could do a power calculation for a log rank test. I would like to know what the suggested sample sizes would be to pick a difference when the control to active are in a ratio of 80% to 20%.

Thanks

Dan

-- 

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Daniel Brewer, Ph.D. Institute of Cancer Research Email: daniel.brewer_at_icr.ac.uk
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Received on Thu 31 Jan 2008 - 16:08:47 GMT

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